diff --git a/.cargo/config.toml b/.cargo/config.toml
index 64fcc6aea..f015cd17a 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -4,10 +4,6 @@ xtask = "run -p xtask --"
 [env]
 CARGO_WORKSPACE_DIR = { value = "", relative = true }
 
-# Windows環境でテストエラーになるのを防ぐために設定するworkaround
-# https://github.com/VOICEVOX/onnxruntime-rs/issues/3#issuecomment-1207381367
-ORT_OUT_DIR = { value = "target/debug/deps", relative = true }
-
 [target.aarch64-unknown-linux-gnu]
 linker = "aarch64-linux-gnu-gcc"
 
diff --git a/.github/actions/create-venv/action.yml b/.github/actions/create-venv/action.yml
index c8883621e..484ad892f 100644
--- a/.github/actions/create-venv/action.yml
+++ b/.github/actions/create-venv/action.yml
@@ -1,3 +1,6 @@
+name: Create venv
+description: Pythonの仮想環境を作成し、$PATHと$VIRTUAL_ENVを設定する。
+
 runs:
   using: composite
   steps:
diff --git a/.github/actions/rust-toolchain-from-file/action.yml b/.github/actions/rust-toolchain-from-file/action.yml
index d82c9c159..917faed3c 100644
--- a/.github/actions/rust-toolchain-from-file/action.yml
+++ b/.github/actions/rust-toolchain-from-file/action.yml
@@ -1,3 +1,6 @@
+name: rustup toolchain install from file
+description: rust-toolchainファイルをもとにRustのツールチェーンをインストールする。
+
 inputs:
   targets:
     required: false
diff --git a/.github/workflows/build_and_deploy.yml b/.github/workflows/build_and_deploy.yml
index 80a7f807c..01ddfc434 100644
--- a/.github/workflows/build_and_deploy.yml
+++ b/.github/workflows/build_and_deploy.yml
@@ -58,7 +58,6 @@ jobs:
               "target": "x86_64-pc-windows-msvc",
               "artifact_name": "windows-x64-cpu",
               "whl_local_version": "cpu",
-              "use_cuda": false,
               "can_skip_in_simple_test": true
             },
             {
@@ -67,16 +66,14 @@ jobs:
               "target": "x86_64-pc-windows-msvc",
               "artifact_name": "windows-x64-directml",
               "whl_local_version": "directml",
-              "use_cuda": false,
               "can_skip_in_simple_test": false
             },
             {
               "os": "windows-2019",
-              "features": "",
+              "features": "cuda",
               "target": "x86_64-pc-windows-msvc",
               "artifact_name": "windows-x64-cuda",
               "whl_local_version": "cuda",
-              "use_cuda": true,
               "can_skip_in_simple_test": true
             },
             {
@@ -85,7 +82,6 @@ jobs:
               "target": "i686-pc-windows-msvc",
               "artifact_name": "windows-x86-cpu",
               "whl_local_version": "cpu",
-              "use_cuda": false,
               "can_skip_in_simple_test": true
             },
             {
@@ -94,16 +90,14 @@ jobs:
               "target": "x86_64-unknown-linux-gnu",
               "artifact_name": "linux-x64-cpu",
               "whl_local_version": "cpu",
-              "use_cuda": false,
               "can_skip_in_simple_test": true
             },
             {
               "os": "ubuntu-20.04",
-              "features": "",
+              "features": "cuda",
               "target": "x86_64-unknown-linux-gnu",
               "artifact_name": "linux-x64-gpu",
               "whl_local_version": "cuda",
-              "use_cuda": true,
               "can_skip_in_simple_test": false
             },
             {
@@ -112,7 +106,6 @@ jobs:
               "target": "aarch64-unknown-linux-gnu",
               "artifact_name": "linux-arm64-cpu",
               "whl_local_version": "cpu",
-              "use_cuda": false,
               "can_skip_in_simple_test": true
             },
             {
@@ -120,7 +113,6 @@ jobs:
               "features": "",
               "target": "aarch64-linux-android",
               "artifact_name": "android-arm64-cpu",
-              "use_cuda": false,
               "can_skip_in_simple_test": true
             },
             {
@@ -128,7 +120,6 @@ jobs:
               "features": "",
               "target": "x86_64-linux-android",
               "artifact_name": "android-x86_64-cpu",
-              "use_cuda": false,
               "can_skip_in_simple_test": true
             },
             {
@@ -137,7 +128,6 @@ jobs:
               "target": "aarch64-apple-darwin",
               "artifact_name": "osx-arm64-cpu",
               "whl_local_version": "cpu",
-              "use_cuda": false,
               "can_skip_in_simple_test": false
             },
             {
@@ -146,7 +136,6 @@ jobs:
               "target": "x86_64-apple-darwin",
               "artifact_name": "osx-x64-cpu",
               "whl_local_version": "cpu",
-              "use_cuda": false,
               "can_skip_in_simple_test": true
             },
             {
@@ -154,7 +143,6 @@ jobs:
               "features": "",
               "target": "aarch64-apple-ios",
               "artifact_name": "ios-arm64-cpu",
-              "use_cuda": false,
               "can_skip_in_simple_test": true
             },
             {
@@ -162,7 +150,6 @@ jobs:
               "features": "",
               "target": "aarch64-apple-ios-sim",
               "artifact_name": "ios-arm64-cpu-sim",
-              "use_cuda": false,
               "can_skip_in_simple_test": true
             },
             {
@@ -170,7 +157,6 @@ jobs:
               "features": "",
               "target": "x86_64-apple-ios",
               "artifact_name": "ios-x64-cpu",
-              "use_cuda": false,
               "can_skip_in_simple_test": true
             }
           ]'
@@ -242,7 +228,7 @@ jobs:
       - name: Raplace resource
         if: inputs.is_production
         shell: bash
-        run: |
+        run:
           mv -f download/resource/core/README.md ./README.md
       - name: Install cargo-binstall
         uses: taiki-e/install-action@cargo-binstall
@@ -268,7 +254,6 @@ jobs:
           fi
         env:
           RUSTFLAGS: -C panic=abort
-          ORT_USE_CUDA: ${{ matrix.use_cuda }}
       - name: build voicevox_core_python_api
         if: matrix.whl_local_version
         id: build-voicevox-core-python-api
@@ -286,8 +271,6 @@ jobs:
             build > /dev/null 2>&1
           fi
           echo "whl=$(find ./target/wheels -type f)" >> "$GITHUB_OUTPUT"
-        env:
-          ORT_USE_CUDA: ${{ matrix.use_cuda }}
       - name: build voicevox_core_java_api
         if: contains(matrix.target, 'android')
         run: |
@@ -305,7 +288,7 @@ jobs:
           cp -v crates/voicevox_core_c_api/include/voicevox_core.h "artifact/${{ env.ASSET_NAME }}"
           cp -v target/${{ matrix.target }}/release/*voicevox_core.{dll,so,dylib} "artifact/${{ env.ASSET_NAME }}" || true
           cp -v target/${{ matrix.target }}/release/voicevox_core.dll.lib "artifact/${{ env.ASSET_NAME }}/voicevox_core.lib" || true
-          cp -v -n target/${{ matrix.target }}/release/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib/*.{dll,so.*,so,dylib} "artifact/${{ env.ASSET_NAME }}" || true
+          cp -v -n target/${{ matrix.target }}/release/{,lib}onnxruntime*.{dll,so.*,so,dylib} "artifact/${{ env.ASSET_NAME }}" || true
           # libonnxruntimeについてはバージョン付のshared libraryを使用するためバージョンがついてないものを削除する
           rm -f artifact/${{ env.ASSET_NAME }}/libonnxruntime.{so,dylib}
           cp -v README.md "artifact/${{ env.ASSET_NAME }}/README.txt"
@@ -315,7 +298,7 @@ jobs:
           cp -v target/${{ matrix.target }}/release/libvoicevox_core_java_api.so java_artifact/ || true
       - name: Code signing (Windows)
         if: startsWith(matrix.os, 'windows') && inputs.code_signing
-        run: |
+        run:
           bash build_util/codesign.bash "artifact/${{ env.ASSET_NAME }}/voicevox_core.dll"
         env:
           ESIGNERCKA_USERNAME: ${{ secrets.ESIGNERCKA_USERNAME }}
@@ -323,7 +306,7 @@ jobs:
           ESIGNERCKA_TOTP_SECRET: ${{ secrets.ESIGNERCKA_TOTP_SECRET }}
       - name: Upload artifact to build XCFramework
         if: contains(matrix.target, 'ios')
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: voicevox_core-${{ matrix.target }}
           path: artifact/${{ env.ASSET_NAME }}
@@ -351,7 +334,7 @@ jobs:
           target_commitish: ${{ github.sha }}
       - name: Upload voicevox_core_java_api artifact
         if: fromJson(needs.config.outputs.deploy) && contains(matrix.target, 'android')
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: voicevox_core_java_api-${{ matrix.artifact_name }}
           path: java_artifact
@@ -361,44 +344,34 @@ jobs:
     needs: [config, build_and_deploy]
     runs-on: macos-12
     env:
+      IOS_X86_64_PATH: artifact/voicevox_core-x86_64-apple-ios
+      IOS_AARCH64_SIM_PATH: artifact/voicevox_core-aarch64-apple-ios-sim
+      IOS_AARCH64_PATH: artifact/voicevox_core-aarch64-apple-ios
       ASSET_NAME: voicevox_core-ios-xcframework-cpu-${{ needs.config.outputs.version }}
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v4
         with:
           name: voicevox_core-x86_64-apple-ios
-          path: artifact/voicevox_core-x86_64-apple-ios
-      - uses: actions/download-artifact@v2
+          path: ${{ env.IOS_X86_64_PATH }}
+      - uses: actions/download-artifact@v4
         with:
           name: voicevox_core-aarch64-apple-ios-sim
-          path: artifact/voicevox_core-aarch64-apple-ios-sim
-      - uses: actions/download-artifact@v2
+          path: ${{ env.IOS_AARCH64_SIM_PATH }}
+      - uses: actions/download-artifact@v4
         with:
           name: voicevox_core-aarch64-apple-ios
-          path: artifact/voicevox_core-aarch64-apple-ios
-      - name: Create fat binary
+          path: ${{ env.IOS_AARCH64_PATH }}
+      - name: Create xcframework
+        id: create-xcframework 
         run: |
-          mkdir -p "artifact/voicevox_core-sim"
-          lipo -create "artifact/voicevox_core-x86_64-apple-ios/libvoicevox_core.dylib" "artifact/voicevox_core-aarch64-apple-ios-sim/libvoicevox_core.dylib" -output "artifact/voicevox_core-sim/libvoicevox_core.dylib"
-      - name: Create XCFramework
-        run: |
-          mkdir -p "artifact/${{ env.ASSET_NAME }}"
-          # 必要なファイルだけコピー
-          mkdir -p "Headers-sim"
-          cp -v artifact/voicevox_core-x86_64-apple-ios/voicevox_core.h "Headers-sim"
-          cp -v crates/voicevox_core_c_api/xcframework/Headers/module.modulemap "Headers-sim"
-          mkdir -p "Headers-aarch64"
-          cp -v artifact/voicevox_core-aarch64-apple-ios/voicevox_core.h "Headers-aarch64"
-          cp -v crates/voicevox_core_c_api/xcframework/Headers/module.modulemap "Headers-aarch64"
-          xcodebuild -create-xcframework \
-            -library "artifact/voicevox_core-sim/libvoicevox_core.dylib" \
-            -headers "Headers-sim" \
-            -library "artifact/voicevox_core-aarch64-apple-ios/libvoicevox_core.dylib" \
-            -headers "Headers-aarch64" \
-            -output "artifact/${{ env.ASSET_NAME }}/voicevox_core.xcframework"
+          build_util/make_ios_xcframework.bash
+          echo "output_asset_path=${OUTPUT_ASSET_PATH}" >> "$GITHUB_OUTPUT" 
+        env:
+          OUTPUT_ASSET_PATH: artifact/voicevox_core-ios-xcframework-cpu
       - name: Archive artifact
         run: |
-          cd artifact/${{ env.ASSET_NAME }}
+          cd ${{ steps.create-xcframework.outputs.output_asset_path }}
           7z a "../../${{ env.ASSET_NAME }}.zip" "voicevox_core.xcframework"
       - name: Upload to Release
         if: fromJson(needs.config.outputs.deploy)
@@ -427,7 +400,7 @@ jobs:
       - name: Raplace resource
         if: inputs.is_production
         shell: bash
-        run: |
+        run:
           rm -r ./model; mv download/fat_resource/core/model ./model
       - name: Create artifact
         run: |
@@ -456,7 +429,7 @@ jobs:
       - name: Set up Rust
         uses: ./.github/actions/rust-toolchain-from-file
       - name: Set up Java
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v4
         with:
           java-version: "17"
           distribution: "adopt"
@@ -469,7 +442,7 @@ jobs:
       - name: Install cargo-edit
         run: cargo binstall cargo-edit@^0.11 --no-confirm
       - name: set cargo version
-        run: |
+        run:
           cargo set-version "$VERSION" -p voicevox_core_java_api
 
       - name: "Download artifact (android-arm64-cpu)"
diff --git a/.github/workflows/cargo-deny.yml b/.github/workflows/cargo-deny.yml
index ac4978b9a..cf600f535 100644
--- a/.github/workflows/cargo-deny.yml
+++ b/.github/workflows/cargo-deny.yml
@@ -13,7 +13,7 @@ jobs:
       - name: Install cargo-binstall
         uses: taiki-e/install-action@cargo-binstall
       - name: Install cargo-deny
-        run: cargo binstall cargo-deny@^0.13 --no-confirm --log-level debug
+        run: cargo binstall cargo-deny@^0.14 --no-confirm --log-level debug
       - name: cargo-deny
         run: |
           if ${{ !!github.event.release }}; then
diff --git a/.github/workflows/download_test.yml b/.github/workflows/download_test.yml
index d2e8b718b..2a1190e40 100644
--- a/.github/workflows/download_test.yml
+++ b/.github/workflows/download_test.yml
@@ -7,14 +7,16 @@ on:
         description: "テスト対象のコアのバージョン。無指定時はprerelease込みの最新release。"
         type: string
         required: false
-  push:
-    branches:
-      - main
-  pull_request:
-    paths:
-      - "Cargo.*"
-      - "crates/downloader/**"
-      - ".github/workflows/download_test.yml"
+  # 新しいビルドができるまで、このworkflowが壊れて動かないことを許容する
+  # https://github.com/VOICEVOX/voicevox_core/issues/741#issuecomment-1935303742
+  #push:
+  #  branches:
+  #    - main
+  #pull_request:
+  #  paths:
+  #    - "Cargo.*"
+  #    - "crates/downloader/**"
+  #    - ".github/workflows/download_test.yml"
 
 env:
   VERSION: ${{ inputs.version || 'prerelease-latest' }}
diff --git a/.github/workflows/generate_document.yml b/.github/workflows/generate_document.yml
index e3890d82a..37c39a1dd 100644
--- a/.github/workflows/generate_document.yml
+++ b/.github/workflows/generate_document.yml
@@ -21,7 +21,7 @@ jobs:
         with:
           python-version: "3.8"
       - name: Setup Java
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v4
         with:
           java-version: "11"
           distribution: "adopt"
diff --git a/.github/workflows/java_lint.yml b/.github/workflows/java_lint.yml
index c75222912..ad408e3a7 100644
--- a/.github/workflows/java_lint.yml
+++ b/.github/workflows/java_lint.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-java@v2
+      - uses: actions/setup-java@v4
         with:
           java-version: "11"
           distribution: "adopt"
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3e47256f3..d0639d045 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -72,8 +72,8 @@ jobs:
         with:
           python-version: "3.8"
       - uses: Swatinem/rust-cache@v2
-      - run: cargo clippy -vv --all-features --features onnxruntime/disable-sys-build-script --tests -- -D clippy::all -D warnings --no-deps
-      - run: cargo clippy -vv --all-features --features onnxruntime/disable-sys-build-script -- -D clippy::all -D warnings --no-deps
+      - run: cargo clippy -vv --all-features --tests -- -D clippy::all -D warnings --no-deps
+      - run: cargo clippy -vv --all-features -- -D clippy::all -D warnings --no-deps
       - run: cargo fmt -- --check
 
   rust-unit-test:
@@ -151,7 +151,8 @@ jobs:
           metadata=$(cargo metadata --format-version 1)
           version=$(
               jq -r '
-                (.workspace_members[] | select(startswith("xtask "))) as $xtask
+                .workspace_members as $workspace_members
+                  | (.packages[] | select(.name == "xtask").id | select(. as $id | $workspace_members | index($id))) as $xtask
                   | (.resolve.nodes[] | select(.id == $xtask).deps[] | select(.name == "cbindgen").pkg) as $cbindgen
                   | .packages[] | select(.id == $cbindgen).version
                 ' <<< "$metadata"
@@ -198,8 +199,8 @@ jobs:
           mkdir -p example/cpp/unix/voicevox_core/
           cp -v crates/voicevox_core_c_api/include/voicevox_core.h example/cpp/unix/voicevox_core/
           cp -v target/debug/libvoicevox_core.{so,dylib} example/cpp/unix/voicevox_core/ || true
-          cp -v target/debug/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib/libonnxruntime.so.* example/cpp/unix/voicevox_core/ || true
-          cp -v target/debug/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib/libonnxruntime.*.dylib example/cpp/unix/voicevox_core/ || true
+          cp -v target/debug/libonnxruntime.so.* example/cpp/unix/voicevox_core/ || true
+          cp -v target/debug/libonnxruntime.*.dylib example/cpp/unix/voicevox_core/ || true
 
       - if: startsWith(matrix.os, 'mac')
         uses: jwlawson/actions-setup-cmake@v1.13
@@ -276,26 +277,19 @@ jobs:
           pip install --upgrade poetry
           poetry install --with dev --with test
       - run: cargo build -p test_util -vv # build scriptにより/crates/test_util/data/の生成
-      # `macos-latest`(=`macos-12`)で次の問題が発生するため、それに対するワークアラウンド
-      # https://github.com/VOICEVOX/voicevox_core/issues/653#issuecomment-1782108410
-      - if: startsWith(matrix.os, 'mac')
-        name: Build open_jtalk-sys
-        run: |
-          poetry run -- cargo build -p voicevox_core_python_api -vv || true
-          [ -n "$(find ../../target/debug/deps -name 'libopen_jtalk_sys-*.rlib')" ]
       - run: poetry run maturin build --locked
       - run: poetry run maturin develop --locked
       - name: 必要なDLLをコピーしてpytestを実行
         run: |
-          cp -v ../../target/debug/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib/onnxruntime.dll . || true
-          cp -v ../../target/debug/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib/libonnxruntime.so.* . || true
-          cp -v ../../target/debug/build/onnxruntime-sys-*/out/onnxruntime_*/onnxruntime-*/lib/libonnxruntime.*.dylib . || true
+          cp -v ../../target/debug/onnxruntime.dll . || true
+          cp -v ../../target/debug/libonnxruntime.so.* . || true
+          cp -v ../../target/debug/libonnxruntime.*.dylib . || true
 
           poetry run pytest
       - name: Exampleを実行
         run: |
           for file in ../../example/python/run{,-asyncio}.py; do
-            poetry run python "$file" ../../model/sample.vvm --dict-dir ../test_util/data/open_jtalk_dic_utf_8-1.11
+            poetry run python "$file" ../test_util/data/model/sample.vvm --dict-dir ../test_util/data/open_jtalk_dic_utf_8-1.11
           done
   build-and-test-java-api:
     strategy:
@@ -311,7 +305,7 @@ jobs:
       - name: Set up Rust
         uses: ./.github/actions/rust-toolchain-from-file
       - name: Set up Java
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v4
         with:
           java-version: "11"
           distribution: "adopt"
diff --git a/Cargo.lock b/Cargo.lock
index 72f8b7cca..0f9a78469 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -17,26 +17,6 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
-[[package]]
-name = "aead"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fc95d1bdb8e6666b2b217308eeeb09f2d6728d104be3e31916cc74d15420331"
-dependencies = [
- "generic-array",
-]
-
-[[package]]
-name = "aes"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "884391ef1066acaa41e766ba8f596341b96e93ce34f9a43e7d24bf0a0eaf0561"
-dependencies = [
- "aes-soft",
- "aesni",
- "cipher 0.2.5",
-]
-
 [[package]]
 name = "aes"
 version = "0.7.5"
@@ -44,45 +24,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e8b47f52ea9bae42228d07ec09eb676433d7c4ed1ebdf0f1d1c29ed446f1ab8"
 dependencies = [
  "cfg-if",
- "cipher 0.3.0",
+ "cipher",
  "cpufeatures",
  "opaque-debug",
 ]
 
-[[package]]
-name = "aes-gcm"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5278b5fabbb9bd46e24aa69b2fdea62c99088e0a950a9be40e3e0101298f88da"
-dependencies = [
- "aead",
- "aes 0.6.0",
- "cipher 0.2.5",
- "ctr",
- "ghash",
- "subtle",
-]
-
-[[package]]
-name = "aes-soft"
-version = "0.6.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be14c7498ea50828a38d0e24a765ed2effe92a705885b57d029cd67d45744072"
-dependencies = [
- "cipher 0.2.5",
- "opaque-debug",
-]
-
-[[package]]
-name = "aesni"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea2e11f5e94c2f7d386164cc2aa1f97823fed6f259e486940a71c174dd01b0ce"
-dependencies = [
- "cipher 0.2.5",
- "opaque-debug",
-]
-
 [[package]]
 name = "aho-corasick"
 version = "1.1.2"
@@ -117,7 +63,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3fa490e751f3878eb9accb9f18988eca52c2337ce000a8bf31ef50d4c723ca9e"
 dependencies = [
  "android_log-sys",
- "env_logger 0.10.0",
+ "env_logger",
  "log",
  "once_cell",
 ]
@@ -196,135 +142,19 @@ dependencies = [
  "yansi",
 ]
 
-[[package]]
-name = "async-attributes"
-version = "1.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a3203e79f4dd9bdda415ed03cf14dae5a2bf775c683a00f94e9cd1faf0f596e5"
-dependencies = [
- "quote",
- "syn 1.0.102",
-]
-
-[[package]]
-name = "async-channel"
-version = "1.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e14485364214912d3b19cc3435dde4df66065127f05fa0d75c712f36f12c2f28"
-dependencies = [
- "concurrent-queue",
- "event-listener",
- "futures-core",
-]
-
 [[package]]
 name = "async-compression"
-version = "0.3.15"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "942c7cd7ae39e91bde4820d74132e9862e62c2f386c3aa90ccf55949f5bad63a"
+checksum = "a116f46a969224200a0a97f29cfd4c50e7534e4b4826bd23ea2c3c533039c82c"
 dependencies = [
- "bzip2",
  "flate2",
  "futures-core",
- "memchr",
- "pin-project-lite",
- "tokio",
- "xz2",
- "zstd",
- "zstd-safe",
-]
-
-[[package]]
-name = "async-executor"
-version = "1.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "871f9bb5e0a22eeb7e8cf16641feb87c9dc67032ccf8ff49e772eb9941d3a965"
-dependencies = [
- "async-task",
- "concurrent-queue",
- "fastrand",
- "futures-lite",
- "once_cell",
- "slab",
-]
-
-[[package]]
-name = "async-global-executor"
-version = "2.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0da5b41ee986eed3f524c380e6d64965aea573882a8907682ad100f7859305ca"
-dependencies = [
- "async-channel",
- "async-executor",
- "async-io",
- "async-lock",
- "blocking",
- "futures-lite",
- "once_cell",
-]
-
-[[package]]
-name = "async-io"
-version = "1.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83e21f3a490c72b3b0cf44962180e60045de2925d8dff97918f7ee43c8f637c7"
-dependencies = [
- "autocfg",
- "concurrent-queue",
- "futures-lite",
- "libc",
- "log",
- "once_cell",
- "parking",
- "polling",
- "slab",
- "socket2",
- "waker-fn",
- "winapi",
-]
-
-[[package]]
-name = "async-lock"
-version = "2.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e97a171d191782fba31bb902b14ad94e24a68145032b7eedf871ab0bc0d077b6"
-dependencies = [
- "event-listener",
-]
-
-[[package]]
-name = "async-std"
-version = "1.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62565bb4402e926b29953c785397c6dc0391b7b446e45008b0049eb43cec6f5d"
-dependencies = [
- "async-attributes",
- "async-channel",
- "async-global-executor",
- "async-io",
- "async-lock",
- "crossbeam-utils",
- "futures-channel",
- "futures-core",
  "futures-io",
- "futures-lite",
- "gloo-timers",
- "kv-log-macro",
- "log",
  "memchr",
- "once_cell",
  "pin-project-lite",
- "pin-utils",
- "slab",
- "wasm-bindgen-futures",
 ]
 
-[[package]]
-name = "async-task"
-version = "4.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a40729d2133846d9ed0ea60a8b9541bccddab49cd30f0715a1da672fe9a2524"
-
 [[package]]
 name = "async-trait"
 version = "0.1.57"
@@ -338,25 +168,17 @@ dependencies = [
 
 [[package]]
 name = "async_zip"
-version = "0.0.11"
+version = "0.0.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c50d29ab7e2f9e808cca1a69ea56a36f4ff216f54a41a23aae1fd4afc05cc020"
+checksum = "527207465fb6dcafbf661b0d4a51d0d2306c9d0c2975423079a6caa807930daf"
 dependencies = [
  "async-compression",
- "chrono",
  "crc32fast",
- "log",
+ "futures-lite",
  "pin-project",
  "thiserror",
- "tokio",
 ]
 
-[[package]]
-name = "atomic-waker"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "065374052e7df7ee4047b1160cca5e1467a12351a40b3da123c870ba0b8eda2a"
-
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -389,12 +211,6 @@ dependencies = [
  "rustc-demangle",
 ]
 
-[[package]]
-name = "base-x"
-version = "0.2.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4cbbc9d0964165b47557570cce6c952866c2678457aca742aafc9fb771d30270"
-
 [[package]]
 name = "base64"
 version = "0.13.0"
@@ -415,15 +231,13 @@ checksum = "8a32fd6af2b5827bce66c29053ba0e7c42b9dcab01835835058558c10851a46b"
 
 [[package]]
 name = "bindgen"
-version = "0.60.1"
+version = "0.62.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "062dddbc1ba4aca46de6338e2bf87771414c335f7b2f2036e8f3e9befebf88e6"
+checksum = "c6720a8b7b2d39dd533285ed438d458f65b31b5c257e6ac7bb3d7e82844dd722"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "cexpr",
  "clang-sys",
- "clap 3.2.22",
- "env_logger 0.9.1",
  "lazy_static",
  "lazycell",
  "log",
@@ -433,6 +247,30 @@ dependencies = [
  "regex",
  "rustc-hash",
  "shlex",
+ "syn 1.0.102",
+ "which",
+]
+
+[[package]]
+name = "bindgen"
+version = "0.69.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a00dc851838a2120612785d195287475a3ac45514741da670b735818822129a0"
+dependencies = [
+ "bitflags 2.5.0",
+ "cexpr",
+ "clang-sys",
+ "itertools 0.11.0",
+ "lazy_static",
+ "lazycell",
+ "log",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "rustc-hash",
+ "shlex",
+ "syn 2.0.48",
  "which",
 ]
 
@@ -454,13 +292,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
-name = "block-buffer"
-version = "0.9.0"
+name = "bitflags"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4152116fd6e9dadb291ae18fc1ec3575ed6d84c29642d97890f4b4a3417297e4"
-dependencies = [
- "generic-array",
-]
+checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1"
 
 [[package]]
 name = "block-buffer"
@@ -471,20 +306,6 @@ dependencies = [
  "generic-array",
 ]
 
-[[package]]
-name = "blocking"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c6ccb65d468978a086b69884437ded69a90faab3bbe6e67f242173ea728acccc"
-dependencies = [
- "async-channel",
- "async-task",
- "atomic-waker",
- "fastrand",
- "futures-lite",
- "once_cell",
-]
-
 [[package]]
 name = "bstr"
 version = "1.2.0"
@@ -509,12 +330,6 @@ version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
-[[package]]
-name = "bytes"
-version = "0.5.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e4cec68f03f32e44924783795810fa50a7035d8c8ebe78580ad7e6c703fba38"
-
 [[package]]
 name = "bytes"
 version = "1.1.0"
@@ -543,10 +358,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "cache-padded"
-version = "1.2.0"
+name = "camino"
+version = "1.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1db59621ec70f09c5e9b597b220c7a2b43611f4710dc03ceb8748637775692c"
+checksum = "c59e92b5a388f549b863a7bea62612c09f24c8393560709a54558a9abdfb3b9c"
 
 [[package]]
 name = "cbindgen"
@@ -569,11 +384,12 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.73"
+version = "1.0.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fff2a6927b3bb87f9595d67196a70493f627687a71d87a0d692242c33f58c11"
+checksum = "f1174fb0b6ec23863f8b971027804a42614e347eafb0a95bf0b12cdae21fc4d0"
 dependencies = [
  "jobserver",
+ "libc",
 ]
 
 [[package]]
@@ -610,21 +426,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "chunked_transfer"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fff857943da45f546682664a79488be82e69e43c1a7a2307679ab9afb3a66d2e"
-
-[[package]]
-name = "cipher"
-version = "0.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12f8e7987cbd042a63249497f41aed09f8e65add917ea6566effbc56578d6801"
-dependencies = [
- "generic-array",
-]
-
 [[package]]
 name = "cipher"
 version = "0.3.0"
@@ -636,9 +437,9 @@ dependencies = [
 
 [[package]]
 name = "clang-sys"
-version = "1.4.0"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa2e27ae6ab525c3d369ded447057bca5438d86dc3a68f6faafb8269ba82ebf3"
+checksum = "77ed9a53e5d4d9c573ae844bfac6872b159cb1d1585a83b29e7a64b7eef7332a"
 dependencies = [
  "glob",
  "libc",
@@ -652,7 +453,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "86447ad904c7fb335a790c9d7fe3d0d971dc523b8ccd1561a520de9a85302750"
 dependencies = [
  "atty",
- "bitflags",
+ "bitflags 1.3.2",
  "clap_lex 0.2.4",
  "indexmap 1.9.1",
  "strsim",
@@ -667,7 +468,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3b1a0a4208c6c483b952ad35c6eed505fc13b46f08f631b81e828084a9318d74"
 dependencies = [
  "atty",
- "bitflags",
+ "bitflags 1.3.2",
  "clap_derive",
  "clap_lex 0.3.0",
  "once_cell",
@@ -764,7 +565,7 @@ version = "4.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "35ed6e9d84f0b51a7f52daf1c7d71dd136fd7a3f41a8462b8cdb8c78d920fad4"
 dependencies = [
- "bytes 1.1.0",
+ "bytes",
  "memchr",
 ]
 
@@ -774,7 +575,7 @@ version = "0.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "318d6c16e73b3a900eb212ad6a82fc7d298c5ab8184c7a9998646455bc474a16"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "concolor-query",
  "is-terminal",
 ]
@@ -785,15 +586,6 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "82a90734b3d5dcf656e7624cca6bce9c3a90ee11f900e80141a7427ccfb3d317"
 
-[[package]]
-name = "concurrent-queue"
-version = "1.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af4780a44ab5696ea9e28294517f1fffb421a83a25af521333c838635509db9c"
-dependencies = [
- "cache-padded",
-]
-
 [[package]]
 name = "console"
 version = "0.15.4"
@@ -807,12 +599,6 @@ dependencies = [
  "windows-sys 0.42.0",
 ]
 
-[[package]]
-name = "const_fn"
-version = "0.4.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fbdcdcb6d86f71c5e97409ad45898af11cbc995b4ee8112d59095a28d376c935"
-
 [[package]]
 name = "constant_time_eq"
 version = "0.1.5"
@@ -825,23 +611,6 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6245d59a3e82a7fc217c5828a6692dbc6dfb63a0c8c90495621f7b9d79704a0e"
 
-[[package]]
-name = "cookie"
-version = "0.14.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03a5d7b21829bc7b4bf4754a978a241ae54ea55a40f92bb20216e54096f4b951"
-dependencies = [
- "aes-gcm",
- "base64 0.13.0",
- "hkdf",
- "hmac 0.10.1",
- "percent-encoding",
- "rand 0.8.5",
- "sha2 0.9.9",
- "time 0.2.27",
- "version_check",
-]
-
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.3"
@@ -857,12 +626,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "cpuid-bool"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcb25d077389e53838a8158c8e99174c5a9d902dee4904320db714f3c653ffba"
-
 [[package]]
 name = "crc32fast"
 version = "1.3.2"
@@ -915,6 +678,12 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "crunchy"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
+
 [[package]]
 name = "crypto-common"
 version = "0.1.6"
@@ -925,16 +694,6 @@ dependencies = [
  "typenum",
 ]
 
-[[package]]
-name = "crypto-mac"
-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bff07008ec701e8028e2ceb8f83f0e4274ee62bd2dbdc4fefff2e9a91824081a"
-dependencies = [
- "generic-array",
- "subtle",
-]
-
 [[package]]
 name = "cstr"
 version = "0.2.11"
@@ -955,46 +714,6 @@ dependencies = [
  "syn 1.0.102",
 ]
 
-[[package]]
-name = "ctr"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb4a30d54f7443bf3d6191dcd486aca19e67cb3c49fa7a06a319966346707e7f"
-dependencies = [
- "cipher 0.2.5",
-]
-
-[[package]]
-name = "curl"
-version = "0.4.44"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "509bd11746c7ac09ebd19f0b17782eae80aadee26237658a6b4808afb5c11a22"
-dependencies = [
- "curl-sys",
- "libc",
- "openssl-probe",
- "openssl-sys",
- "schannel",
- "socket2",
- "winapi",
-]
-
-[[package]]
-name = "curl-sys"
-version = "0.4.56+curl-7.83.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6093e169dd4de29e468fa649fbae11cdcd5551c81fe5bf1b0677adad7ef3d26f"
-dependencies = [
- "cc",
- "libc",
- "libnghttp2-sys",
- "libz-sys",
- "openssl-sys",
- "pkg-config",
- "vcpkg",
- "winapi",
-]
-
 [[package]]
 name = "cxx"
 version = "1.0.86"
@@ -1060,7 +779,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim",
- "syn 2.0.38",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -1071,7 +790,7 @@ checksum = "836a9bbc7ad63342d6d6e7b815ccab164bc77a2d95d84bc3117a8c0d5c98e2d5"
 dependencies = [
  "darling_core",
  "quote",
- "syn 2.0.38",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -1105,7 +824,7 @@ dependencies = [
  "convert_case",
  "proc-macro2",
  "quote",
- "rustc_version 0.4.0",
+ "rustc_version",
  "syn 1.0.102",
 ]
 
@@ -1121,32 +840,17 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6184e33543162437515c2e2b48714794e37845ec9851711914eec9d308f6ebe8"
 
-[[package]]
-name = "digest"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
-dependencies = [
- "generic-array",
-]
-
 [[package]]
 name = "digest"
 version = "0.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "adfbc57365a37acbd2ebf2b64d7e69bb766e2fea813521ed536f5d0520dcf86c"
 dependencies = [
- "block-buffer 0.10.3",
+ "block-buffer",
  "crypto-common",
  "subtle",
 ]
 
-[[package]]
-name = "discard"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "212d0f5754cb6769937f4501cc0e67f4f4483c8d2c3e1e922ee9edbe4ab4c7c0"
-
 [[package]]
 name = "doc-comment"
 version = "0.3.3"
@@ -1159,7 +863,7 @@ version = "0.0.0"
 dependencies = [
  "anyhow",
  "binstall-tar",
- "bytes 1.1.0",
+ "bytes",
  "clap 4.0.10",
  "flate2",
  "fs-err",
@@ -1258,7 +962,7 @@ checksum = "48c69b3965971f5d0ea6a6dd26b55cdd517ae0e1425dc8d94e482a5915bd7ddf"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.38",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -1271,20 +975,7 @@ dependencies = [
  "num-traits",
  "proc-macro2",
  "quote",
- "syn 2.0.38",
-]
-
-[[package]]
-name = "env_logger"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c90bf5f19754d10198ccb95b70664fc925bd1fc090a0fd9a6ebc54acc8cd6272"
-dependencies = [
- "atty",
- "humantime",
- "log",
- "regex",
- "termcolor",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -1344,12 +1035,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "event-listener"
-version = "2.5.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0206175f82b8d6bf6652ff7d71a1e27fd2e4efde587fd368662814d6ec1d9ce0"
-
 [[package]]
 name = "eyre"
 version = "0.6.8"
@@ -1369,6 +1054,12 @@ dependencies = [
  "instant",
 ]
 
+[[package]]
+name = "fastrand"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25cbce373ec4653f1a01a31e8a5e5ec0c622dc27ff9c4e6606eefef5cbbed4a5"
+
 [[package]]
 name = "filetime"
 version = "0.2.17"
@@ -1391,17 +1082,6 @@ dependencies = [
  "miniz_oxide 0.6.2",
 ]
 
-[[package]]
-name = "flume"
-version = "0.9.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bebadab126f8120d410b677ed95eee4ba6eb7c6dd8e34a5ec88a08050e26132"
-dependencies = [
- "futures-core",
- "futures-sink",
- "spinning_top",
-]
-
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -1477,17 +1157,15 @@ checksum = "4fff74096e71ed47f8e023204cfd0aa1289cd54ae5430a9523be060cdb849964"
 
 [[package]]
 name = "futures-lite"
-version = "1.12.0"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7694489acd39452c77daa48516b894c153f192c3578d5a839b62c58099fcbf48"
+checksum = "445ba825b27408685aaecefd65178908c36c6e96aaf6d8599419d46e624192ba"
 dependencies = [
- "fastrand",
+ "fastrand 2.0.1",
  "futures-core",
  "futures-io",
- "memchr",
  "parking",
  "pin-project-lite",
- "waker-fn",
 ]
 
 [[package]]
@@ -1498,7 +1176,7 @@ checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.38",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -1547,17 +1225,6 @@ dependencies = [
  "version_check",
 ]
 
-[[package]]
-name = "getrandom"
-version = "0.1.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
-dependencies = [
- "cfg-if",
- "libc",
- "wasi 0.9.0+wasi-snapshot-preview1",
-]
-
 [[package]]
 name = "getrandom"
 version = "0.2.7"
@@ -1566,17 +1233,7 @@ checksum = "4eb1a864a501629691edf6c15a593b7a51eebaa1e8468e9ddc623de7c9b58ec6"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi 0.11.0+wasi-snapshot-preview1",
-]
-
-[[package]]
-name = "ghash"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97304e4cd182c3846f7575ced3890c53012ce534ad9114046b0a9e00bb30a375"
-dependencies = [
- "opaque-debug",
- "polyval",
+ "wasi",
 ]
 
 [[package]]
@@ -1602,25 +1259,13 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
 
-[[package]]
-name = "gloo-timers"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fb7d06c1c8cc2a29bee7ec961009a0b2caa0793ee4900c2ffb348734ba1c8f9"
-dependencies = [
- "futures-channel",
- "futures-core",
- "js-sys",
- "wasm-bindgen",
-]
-
 [[package]]
 name = "h2"
 version = "0.3.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5f9f29bc9dda355256b2916cf526ab02ce0aeaaaf2bad60d65ef3f12f11dd0f4"
 dependencies = [
- "bytes 1.1.0",
+ "bytes",
  "fnv",
  "futures-core",
  "futures-sink",
@@ -1633,6 +1278,16 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "half"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc52e53916c08643f1b56ec082790d1e86a32e58dc5268f897f313fbae7b4872"
+dependencies = [
+ "cfg-if",
+ "crunchy",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.12.3"
@@ -1681,33 +1336,13 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
-[[package]]
-name = "hkdf"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51ab2f639c231793c5f6114bdb9bbe50a7dbbfcd7c7c6bd8475dec2d991e964f"
-dependencies = [
- "digest 0.9.0",
- "hmac 0.10.1",
-]
-
-[[package]]
-name = "hmac"
-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1441c6b1e930e2817404b5046f1f989899143a12bf92de603b69f4e0aee1e15"
-dependencies = [
- "crypto-mac",
- "digest 0.9.0",
-]
-
 [[package]]
 name = "hmac"
 version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c49c37c09c17a53d937dfbb742eb3a961d65a994e6bcdcf37e7399d0cc8ab5e"
 dependencies = [
- "digest 0.10.5",
+ "digest",
 ]
 
 [[package]]
@@ -1716,7 +1351,7 @@ version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "75f43d41e26995c17e71ee126451dd3941010b0514a81a9d11f3b341debc2399"
 dependencies = [
- "bytes 1.1.0",
+ "bytes",
  "fnv",
  "itoa",
 ]
@@ -1727,47 +1362,11 @@ version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d5f38f16d184e36f2408a55281cd658ecbd3ca05cce6d6510a176eca393e26d1"
 dependencies = [
- "bytes 1.1.0",
+ "bytes",
  "http",
  "pin-project-lite",
 ]
 
-[[package]]
-name = "http-client"
-version = "6.5.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1947510dc91e2bf586ea5ffb412caad7673264e14bb39fb9078da114a94ce1a5"
-dependencies = [
- "async-std",
- "async-trait",
- "cfg-if",
- "http-types",
- "isahc",
- "log",
-]
-
-[[package]]
-name = "http-types"
-version = "2.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e9b187a72d63adbfba487f48095306ac823049cb504ee195541e91c7775f5ad"
-dependencies = [
- "anyhow",
- "async-channel",
- "async-std",
- "base64 0.13.0",
- "cookie",
- "futures-lite",
- "infer",
- "pin-project-lite",
- "rand 0.7.3",
- "serde",
- "serde_json",
- "serde_qs",
- "serde_urlencoded",
- "url",
-]
-
 [[package]]
 name = "httparse"
 version = "1.8.0"
@@ -1789,19 +1388,13 @@ dependencies = [
  "libm",
 ]
 
-[[package]]
-name = "humantime"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
-
 [[package]]
 name = "hyper"
 version = "0.14.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "034711faac9d2166cb1baf1a2fb0b60b1f277f8492fd72176c17f3515e1abd3c"
 dependencies = [
- "bytes 1.1.0",
+ "bytes",
  "futures-channel",
  "futures-core",
  "futures-util",
@@ -1827,7 +1420,7 @@ checksum = "1788965e61b367cd03a62950836d5cd41560c3577d90e40e0819373194d1661c"
 dependencies = [
  "http",
  "hyper",
- "rustls",
+ "rustls 0.20.6",
  "tokio",
  "tokio-rustls",
 ]
@@ -1909,21 +1502,15 @@ checksum = "cef509aa9bc73864d6756f0d34d35504af3cf0844373afe9b8669a5b8005a729"
 dependencies = [
  "console",
  "number_prefix",
- "portable-atomic",
+ "portable-atomic 0.3.19",
  "unicode-width",
 ]
 
 [[package]]
 name = "indoc"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "adab1eaa3408fb7f0c777a73e7465fd5656136fc93b670eb6df3c88c2c1344e3"
-
-[[package]]
-name = "infer"
-version = "0.2.3"
+version = "2.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64e9829a50b42bb782c1df523f78d332fe371b10c661e78b7a3c34b0198e9fac"
+checksum = "1e186cfbae8084e513daff4240b4797e342f988cecda4fb6c939150f96315fd8"
 
 [[package]]
 name = "instant"
@@ -1973,29 +1560,6 @@ dependencies = [
  "windows-sys 0.42.0",
 ]
 
-[[package]]
-name = "isahc"
-version = "0.9.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2948a0ce43e2c2ef11d7edf6816508998d99e13badd1150be0914205df9388a"
-dependencies = [
- "bytes 0.5.6",
- "crossbeam-utils",
- "curl",
- "curl-sys",
- "flume",
- "futures-lite",
- "http",
- "log",
- "once_cell",
- "slab",
- "sluice",
- "tracing",
- "tracing-futures",
- "url",
- "waker-fn",
-]
-
 [[package]]
 name = "itertools"
 version = "0.10.5"
@@ -2020,6 +1584,15 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4217ad341ebadf8d8e724e264f13e593e0648f5b3e94b3896a5df283be015ecc"
 
+[[package]]
+name = "jlabel"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f040b22c55628977296069dbf8635be49cc510999c048a1f1bdb56d00983148"
+dependencies = [
+ "thiserror",
+]
+
 [[package]]
 name = "jni"
 version = "0.21.1"
@@ -2074,15 +1647,6 @@ dependencies = [
  "simple_asn1",
 ]
 
-[[package]]
-name = "kv-log-macro"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0de8b303297635ad57c9f5059fd9cee7a47f8e8daa09df0fcd07dd39fb22977f"
-dependencies = [
- "log",
-]
-
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -2117,16 +1681,6 @@ version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "348108ab3fba42ec82ff6e9564fc4ca0247bdccdc68dd8af9764bbc79c3c8ffb"
 
-[[package]]
-name = "libnghttp2-sys"
-version = "0.1.7+1.45.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57ed28aba195b38d5ff02b9170cbff627e336a20925e43b4945390401c5dc93f"
-dependencies = [
- "cc",
- "libc",
-]
-
 [[package]]
 name = "libtest-mimic"
 version = "0.6.0"
@@ -2138,18 +1692,6 @@ dependencies = [
  "threadpool",
 ]
 
-[[package]]
-name = "libz-sys"
-version = "1.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9702761c3935f8cc2f101793272e202c72b99da8f4224a19ddcf1279a6450bbf"
-dependencies = [
- "cc",
- "libc",
- "pkg-config",
- "vcpkg",
-]
-
 [[package]]
 name = "link-cplusplus"
 version = "1.0.7"
@@ -2188,18 +1730,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
 dependencies = [
  "cfg-if",
- "value-bag",
-]
-
-[[package]]
-name = "lzma-sys"
-version = "0.1.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fda04ab3764e6cde78b9974eec4f779acaba7c4e84b36eca3cf77c581b85d27"
-dependencies = [
- "cc",
- "libc",
- "pkg-config",
 ]
 
 [[package]]
@@ -2256,16 +1786,6 @@ version = "0.3.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
 
-[[package]]
-name = "mime_guess"
-version = "2.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4192263c238a5f0d0c6bfd21f336a313a4ce1c450542449ca191bb657b4642ef"
-dependencies = [
- "mime",
- "unicase",
-]
-
 [[package]]
 name = "minimal-lexical"
 version = "0.2.1"
@@ -2298,7 +1818,7 @@ checksum = "e5d732bc30207a6423068df043e3d02e0735b155ad7ce1a6f76fe2baa5b158de"
 dependencies = [
  "libc",
  "log",
- "wasi 0.11.0+wasi-snapshot-preview1",
+ "wasi",
  "windows-sys 0.42.0",
 ]
 
@@ -2308,7 +1828,7 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3ffa00dec017b5b1a8b7cf5e2c008bfda1aa7e0697ac1508b491fdf2622fb4d8"
 dependencies = [
- "rand 0.8.5",
+ "rand",
 ]
 
 [[package]]
@@ -2336,7 +1856,7 @@ dependencies = [
  "noisy_float",
  "num-integer",
  "num-traits",
- "rand 0.8.5",
+ "rand",
 ]
 
 [[package]]
@@ -2459,7 +1979,7 @@ dependencies = [
  "arc-swap",
  "async-trait",
  "base64 0.21.0",
- "bytes 1.1.0",
+ "bytes",
  "cfg-if",
  "chrono",
  "either",
@@ -2483,30 +2003,6 @@ version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
 
-[[package]]
-name = "onnxruntime"
-version = "0.1.0"
-source = "git+https://github.com/VOICEVOX/onnxruntime-rs.git?rev=ebb9dcb9b26ee681889b52b6db3b4f642b04a250#ebb9dcb9b26ee681889b52b6db3b4f642b04a250"
-dependencies = [
- "lazy_static",
- "ndarray",
- "onnxruntime-sys",
- "thiserror",
- "tracing",
-]
-
-[[package]]
-name = "onnxruntime-sys"
-version = "0.0.25"
-source = "git+https://github.com/VOICEVOX/onnxruntime-rs.git?rev=ebb9dcb9b26ee681889b52b6db3b4f642b04a250#ebb9dcb9b26ee681889b52b6db3b4f642b04a250"
-dependencies = [
- "flate2",
- "once_cell",
- "tar",
- "ureq",
- "zip",
-]
-
 [[package]]
 name = "opaque-debug"
 version = "0.3.0"
@@ -2516,8 +2012,9 @@ checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
 [[package]]
 name = "open_jtalk"
 version = "0.1.25"
-source = "git+https://github.com/VOICEVOX/open_jtalk-rs.git?rev=a16714ce16dec76fd0e3041a7acfa484921db3b5#a16714ce16dec76fd0e3041a7acfa484921db3b5"
+source = "git+https://github.com/VOICEVOX/open_jtalk-rs.git?rev=e1940f3fd61a48bed5bbec8cd2645e13923b1f80#e1940f3fd61a48bed5bbec8cd2645e13923b1f80"
 dependencies = [
+ "camino",
  "open_jtalk-sys",
  "thiserror",
 ]
@@ -2525,32 +2022,13 @@ dependencies = [
 [[package]]
 name = "open_jtalk-sys"
 version = "0.16.111"
-source = "git+https://github.com/VOICEVOX/open_jtalk-rs.git?rev=a16714ce16dec76fd0e3041a7acfa484921db3b5#a16714ce16dec76fd0e3041a7acfa484921db3b5"
+source = "git+https://github.com/VOICEVOX/open_jtalk-rs.git?rev=e1940f3fd61a48bed5bbec8cd2645e13923b1f80#e1940f3fd61a48bed5bbec8cd2645e13923b1f80"
 dependencies = [
- "bindgen",
+ "bindgen 0.62.0",
  "cmake",
  "link-cplusplus",
 ]
 
-[[package]]
-name = "openssl-probe"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
-
-[[package]]
-name = "openssl-sys"
-version = "0.9.83"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "666416d899cf077260dac8698d60a60b435a46d57e82acb1be3d0dad87284e5b"
-dependencies = [
- "autocfg",
- "cc",
- "libc",
- "pkg-config",
- "vcpkg",
-]
-
 [[package]]
 name = "os_pipe"
 version = "1.1.2"
@@ -2589,7 +2067,7 @@ dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn 2.0.38",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -2615,9 +2093,9 @@ checksum = "c1b04fb49957986fdce4d6ee7a65027d55d4b6d2265e5848bbb507b58ccfdb6f"
 
 [[package]]
 name = "parking"
-version = "2.0.0"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "427c3892f9e783d91cc128285287e70a59e206ca452770ece88a76f7a3eddd72"
+checksum = "bb813b8af86854136c6922af0598d719255ecb2179515e6e7730d468f05c9cae"
 
 [[package]]
 name = "parking_lot"
@@ -2665,7 +2143,7 @@ dependencies = [
  "regex",
  "regex-syntax 0.7.5",
  "structmeta",
- "syn 2.0.38",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -2675,7 +2153,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7676374caaee8a325c9e7a2ae557f216c5563a171d6997b0ef8a65af35147700"
 dependencies = [
  "base64ct",
- "rand_core 0.6.4",
+ "rand_core",
  "subtle",
 ]
 
@@ -2685,10 +2163,10 @@ version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "83a0692ec44e4cf1ef28ca317f14f8f07da2d95ec3fa01f86e4467b725e60917"
 dependencies = [
- "digest 0.10.5",
- "hmac 0.12.1",
+ "digest",
+ "hmac",
  "password-hash",
- "sha2 0.10.6",
+ "sha2",
 ]
 
 [[package]]
@@ -2751,35 +2229,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1df8c4ec4b0627e53bdf214615ad287367e482558cf84b109250b37464dc03ae"
 
 [[package]]
-name = "polling"
-version = "2.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "899b00b9c8ab553c743b3e11e87c5c7d423b2a2de229ba95b24a756344748011"
-dependencies = [
- "autocfg",
- "cfg-if",
- "libc",
- "log",
- "wepoll-ffi",
- "winapi",
-]
-
-[[package]]
-name = "polyval"
-version = "0.4.5"
+name = "portable-atomic"
+version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eebcc4aa140b9abd2bc40d9c3f7ccec842679cd79045ac3a7ac698c1a064b7cd"
-dependencies = [
- "cpuid-bool",
- "opaque-debug",
- "universal-hash",
-]
+checksum = "26f6a7b87c2e435a3241addceeeff740ff8b7e76b74c13bf9acb17fa454ea00b"
 
 [[package]]
 name = "portable-atomic"
-version = "0.3.19"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26f6a7b87c2e435a3241addceeeff740ff8b7e76b74c13bf9acb17fa454ea00b"
+checksum = "7170ef9988bc169ba16dd36a7fa041e5c4cbeb6a35b76d4c03daded371eae7c0"
 
 [[package]]
 name = "ppv-lite86"
@@ -2828,6 +2287,16 @@ dependencies = [
  "yansi",
 ]
 
+[[package]]
+name = "prettyplease"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8d3928fb5db768cb86f891ff014f0144589297e3c6a1aba6ed7cecfdace270c7"
+dependencies = [
+ "proc-macro2",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -2852,17 +2321,11 @@ dependencies = [
  "version_check",
 ]
 
-[[package]]
-name = "proc-macro-hack"
-version = "0.5.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
-
 [[package]]
 name = "proc-macro2"
-version = "1.0.69"
+version = "1.0.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "134c189feb4956b20f6f547d2cf727d4c0fe06722b20a0eec87ed445a97f92da"
+checksum = "e2422ad645d89c99f8f3e6b88a9fdeca7fabeac836b1002371c4367c8f984aae"
 dependencies = [
  "unicode-ident",
 ]
@@ -2878,15 +2341,16 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.19.2"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e681a6cfdc4adcc93b4d3cf993749a4552018ee0a9b65fc0ccfad74352c72a38"
+checksum = "53bdbb96d49157e65d45cc287af5f32ffadd5f4761438b527b055fb0d4bb8233"
 dependencies = [
  "cfg-if",
  "indoc",
  "libc",
  "memoffset 0.9.0",
  "parking_lot",
+ "portable-atomic 1.6.0",
  "pyo3-build-config",
  "pyo3-ffi",
  "pyo3-macros",
@@ -2895,9 +2359,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-asyncio"
-version = "0.19.0"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2cc34c1f907ca090d7add03dc523acdd91f3a4dab12286604951e2f5152edad"
+checksum = "6ea6b68e93db3622f3bb3bf363246cf948ed5375afe7abff98ccbdd50b184995"
 dependencies = [
  "futures",
  "once_cell",
@@ -2908,9 +2372,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.19.2"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "076c73d0bc438f7a4ef6fdd0c3bb4732149136abd952b110ac93e4edb13a6ba5"
+checksum = "deaa5745de3f5231ce10517a1f5dd97d53e5a2fd77aa6b5842292085831d48d7"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -2918,9 +2382,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.19.2"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e53cee42e77ebe256066ba8aa77eff722b3bb91f3419177cf4cd0f304d3284d9"
+checksum = "62b42531d03e08d4ef1f6e85a2ed422eb678b8cd62b762e53891c05faf0d4afa"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -2939,49 +2403,38 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.19.2"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dfeb4c99597e136528c6dd7d5e3de5434d1ceaf487436a3f03b2d56b6fc9efd1"
+checksum = "7305c720fa01b8055ec95e484a6eca7a83c841267f0dd5280f0c8b8551d2c158"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
  "quote",
- "syn 1.0.102",
+ "syn 2.0.48",
 ]
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.19.2"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "947dc12175c254889edc0c02e399476c2f652b4b9ebd123aa655c224de259536"
+checksum = "7c7e9b68bb9c3149c5b0cade5d07f953d6d125eb4337723c4ccdb665f1f96185"
 dependencies = [
+ "heck",
  "proc-macro2",
+ "pyo3-build-config",
  "quote",
- "syn 1.0.102",
+ "syn 2.0.48",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.33"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
+checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
 dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "rand"
-version = "0.7.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
-dependencies = [
- "getrandom 0.1.16",
- "libc",
- "rand_chacha 0.2.2",
- "rand_core 0.5.1",
- "rand_hc",
-]
-
 [[package]]
 name = "rand"
 version = "0.8.5"
@@ -2989,18 +2442,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
 dependencies = [
  "libc",
- "rand_chacha 0.3.1",
- "rand_core 0.6.4",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
-dependencies = [
- "ppv-lite86",
- "rand_core 0.5.1",
+ "rand_chacha",
+ "rand_core",
 ]
 
 [[package]]
@@ -3010,34 +2453,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
 dependencies = [
  "ppv-lite86",
- "rand_core 0.6.4",
-]
-
-[[package]]
-name = "rand_core"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
-dependencies = [
- "getrandom 0.1.16",
+ "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
 version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
-dependencies = [
- "getrandom 0.2.7",
-]
-
-[[package]]
-name = "rand_hc"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 dependencies = [
- "rand_core 0.5.1",
+ "getrandom",
 ]
 
 [[package]]
@@ -3074,7 +2499,7 @@ version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
 ]
 
 [[package]]
@@ -3083,7 +2508,7 @@ version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
 ]
 
 [[package]]
@@ -3143,7 +2568,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68cc60575865c7831548863cc02356512e3f1dc2f3f82cb837d7fc4cc8f3c97c"
 dependencies = [
  "base64 0.13.0",
- "bytes 1.1.0",
+ "bytes",
  "encoding_rs",
  "futures-core",
  "futures-util",
@@ -3159,7 +2584,7 @@ dependencies = [
  "once_cell",
  "percent-encoding",
  "pin-project-lite",
- "rustls",
+ "rustls 0.20.6",
  "rustls-pemfile",
  "serde",
  "serde_json",
@@ -3172,7 +2597,7 @@ dependencies = [
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
- "webpki-roots",
+ "webpki-roots 0.22.5",
  "winreg",
 ]
 
@@ -3200,7 +2625,7 @@ dependencies = [
  "futures",
  "futures-timer",
  "rstest_macros",
- "rustc_version 0.4.0",
+ "rustc_version",
 ]
 
 [[package]]
@@ -3212,10 +2637,22 @@ dependencies = [
  "cfg-if",
  "proc-macro2",
  "quote",
- "rustc_version 0.4.0",
+ "rustc_version",
  "syn 1.0.102",
 ]
 
+[[package]]
+name = "rstest_reuse"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88530b681abe67924d42cca181d070e3ac20e0740569441a9e35a7cedd2b34a4"
+dependencies = [
+ "quote",
+ "rand",
+ "rustc_version",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.21"
@@ -3228,22 +2665,13 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
-[[package]]
-name = "rustc_version"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
-dependencies = [
- "semver 0.9.0",
-]
-
 [[package]]
 name = "rustc_version"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bfa0f585226d2e68097d4f95d113b15b83a82e819ab25717ec0590d9584ef366"
 dependencies = [
- "semver 1.0.14",
+ "semver",
 ]
 
 [[package]]
@@ -3252,7 +2680,7 @@ version = "0.36.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4fdebc4b395b7fbb9ab11e462e20ed9051e7b16e42d24042c776eca0ac81b03"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "errno 0.2.8",
  "io-lifetimes",
  "libc",
@@ -3266,7 +2694,7 @@ version = "0.37.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "acf8729d8542766f1b2cf77eb034d52f40d375bb8b615d0b147089946e16613d"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "errno 0.3.1",
  "io-lifetimes",
  "libc",
@@ -3286,6 +2714,18 @@ dependencies = [
  "webpki",
 ]
 
+[[package]]
+name = "rustls"
+version = "0.21.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd8d6c9f025a446bc4d18ad9632e69aec8f287aa84499ee335599fabd20c3fd8"
+dependencies = [
+ "log",
+ "ring",
+ "rustls-webpki",
+ "sct",
+]
+
 [[package]]
 name = "rustls-pemfile"
 version = "1.0.2"
@@ -3295,6 +2735,16 @@ dependencies = [
  "base64 0.21.0",
 ]
 
+[[package]]
+name = "rustls-webpki"
+version = "0.101.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c7d5dece342910d9ba34d259310cae3e0154b873b35408b787b59bce53d34fe"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
 [[package]]
 name = "rustversion"
 version = "1.0.11"
@@ -3316,16 +2766,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "schannel"
-version = "0.1.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88d6731146462ea25d9244b2ed5fd1d716d25c52e4d54aa4fb0f3c4e9854dbe2"
-dependencies = [
- "lazy_static",
- "windows-sys 0.36.1",
-]
-
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
@@ -3357,27 +2797,12 @@ dependencies = [
  "zeroize",
 ]
 
-[[package]]
-name = "semver"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
-dependencies = [
- "semver-parser",
-]
-
 [[package]]
 name = "semver"
 version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e25dfac463d778e353db5be2449d1cce89bd6fd23c9f1ea21310ce6e5a1b29c4"
 
-[[package]]
-name = "semver-parser"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
-
 [[package]]
 name = "serde"
 version = "1.0.164"
@@ -3395,7 +2820,7 @@ checksum = "d9735b638ccc51c28bf6914d90a2e9725b377144fc612c49a611fddd1b631d68"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.38",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -3419,17 +2844,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "serde_qs"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7715380eec75f029a4ef7de39a9200e0a63823176b759d055b613f5a87df6a6"
-dependencies = [
- "percent-encoding",
- "serde",
- "thiserror",
-]
-
 [[package]]
 name = "serde_spanned"
 version = "0.6.1"
@@ -3465,7 +2879,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_with_macros",
- "time 0.3.15",
+ "time",
 ]
 
 [[package]]
@@ -3477,16 +2891,7 @@ dependencies = [
  "darling",
  "proc-macro2",
  "quote",
- "syn 2.0.38",
-]
-
-[[package]]
-name = "sha1"
-version = "0.6.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1da05c97445caa12d05e848c4a4fcbbea29e748ac28f7e80e9b010392063770"
-dependencies = [
- "sha1_smol",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -3497,26 +2902,7 @@ checksum = "f04293dc80c3993519f2d7f6f511707ee7094fe0c6d3406feb330cdb3540eba3"
 dependencies = [
  "cfg-if",
  "cpufeatures",
- "digest 0.10.5",
-]
-
-[[package]]
-name = "sha1_smol"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae1a47186c03a32177042e55dbc5fd5aee900b8e0069a8d70fba96a9375cd012"
-
-[[package]]
-name = "sha2"
-version = "0.9.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d58a1e1bf39749807d89cf2d98ac2dfa0ff1cb3faa38fbb64dd88ac8013d800"
-dependencies = [
- "block-buffer 0.9.0",
- "cfg-if",
- "cpufeatures",
- "digest 0.9.0",
- "opaque-debug",
+ "digest",
 ]
 
 [[package]]
@@ -3527,7 +2913,7 @@ checksum = "82e6b795fe2e3b1e845bafcb27aa35405c4d47cdfc92af5fc8d3002f76cebdc0"
 dependencies = [
  "cfg-if",
  "cpufeatures",
- "digest 0.10.5",
+ "digest",
 ]
 
 [[package]]
@@ -3564,7 +2950,7 @@ dependencies = [
  "num-bigint",
  "num-traits",
  "thiserror",
- "time 0.3.15",
+ "time",
 ]
 
 [[package]]
@@ -3576,22 +2962,11 @@ dependencies = [
  "autocfg",
 ]
 
-[[package]]
-name = "sluice"
-version = "0.5.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d7400c0eff44aa2fcb5e31a5f24ba9716ed90138769e4977a2ba6014ae63eb5"
-dependencies = [
- "async-channel",
- "futures-core",
- "futures-io",
-]
-
 [[package]]
 name = "smallvec"
-version = "1.10.0"
+version = "1.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
+checksum = "e6ecd384b10a64542d77071bd64bd7b231f4ed5940fba55e98c3de13824cf3d7"
 
 [[package]]
 name = "snafu"
@@ -3632,79 +3007,12 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
-[[package]]
-name = "spinning_top"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75adad84ee84b521fb2cca2d4fd0f1dab1d8d026bda3c5bea4ca63b5f9f9293c"
-dependencies = [
- "lock_api",
-]
-
-[[package]]
-name = "standback"
-version = "0.2.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e113fb6f3de07a243d434a56ec6f186dfd51cb08448239fe7bcae73f87ff28ff"
-dependencies = [
- "version_check",
-]
-
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
-[[package]]
-name = "stdweb"
-version = "0.4.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d022496b16281348b52d0e30ae99e01a73d737b2f45d38fed4edf79f9325a1d5"
-dependencies = [
- "discard",
- "rustc_version 0.2.3",
- "stdweb-derive",
- "stdweb-internal-macros",
- "stdweb-internal-runtime",
- "wasm-bindgen",
-]
-
-[[package]]
-name = "stdweb-derive"
-version = "0.5.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c87a60a40fccc84bef0652345bbbbbe20a605bf5d0ce81719fc476f5c03b50ef"
-dependencies = [
- "proc-macro2",
- "quote",
- "serde",
- "serde_derive",
- "syn 1.0.102",
-]
-
-[[package]]
-name = "stdweb-internal-macros"
-version = "0.2.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "58fa5ff6ad0d98d1ffa8cb115892b6e69d67799f6763e162a1c9db421dc22e11"
-dependencies = [
- "base-x",
- "proc-macro2",
- "quote",
- "serde",
- "serde_derive",
- "serde_json",
- "sha1 0.6.1",
- "syn 1.0.102",
-]
-
-[[package]]
-name = "stdweb-internal-runtime"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "213701ba3370744dcd1a12960caa4843b3d68b4d1c0a5d575e0d65b2ee9d16c0"
-
 [[package]]
 name = "strsim"
 version = "0.10.0"
@@ -3720,7 +3028,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "structmeta-derive",
- "syn 2.0.38",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -3731,7 +3039,7 @@ checksum = "a60bcaff7397072dca0017d1db428e30d5002e00b6847703e2e42005c95fbe00"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.38",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -3762,29 +3070,6 @@ version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
 
-[[package]]
-name = "surf"
-version = "2.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "718b1ae6b50351982dedff021db0def601677f2120938b070eadb10ba4038dd7"
-dependencies = [
- "async-std",
- "async-trait",
- "cfg-if",
- "encoding_rs",
- "futures-util",
- "getrandom 0.2.7",
- "http-client",
- "http-types",
- "log",
- "mime_guess",
- "once_cell",
- "pin-project-lite",
- "serde",
- "serde_json",
- "web-sys",
-]
-
 [[package]]
 name = "syn"
 version = "1.0.102"
@@ -3798,9 +3083,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.38"
+version = "2.0.48"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e96b79aaa137db8f61e26363a0c9b47d8b4ec75da28b7d1d614c2303e232408b"
+checksum = "0f3531638e407dfc0814761abb7c00a5b54992b849452a0646b7f65c9f770f3f"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3832,7 +3117,7 @@ checksum = "31c0432476357e58790aaa47a8efb0c5138f137343f3b5f23bd36a27e3b0a6d6"
 dependencies = [
  "autocfg",
  "cfg-if",
- "fastrand",
+ "fastrand 1.8.0",
  "redox_syscall 0.3.5",
  "rustix 0.37.19",
  "windows-sys 0.48.0",
@@ -3858,16 +3143,19 @@ name = "test_util"
 version = "0.0.0"
 dependencies = [
  "anyhow",
- "async-std",
- "async_zip",
+ "bindgen 0.69.4",
+ "camino",
  "flate2",
  "fs-err",
+ "indoc",
+ "libloading",
  "once_cell",
+ "reqwest",
  "serde",
  "serde_json",
- "surf",
  "tar",
  "tokio",
+ "zip",
 ]
 
 [[package]]
@@ -3878,22 +3166,22 @@ checksum = "949517c0cf1bf4ee812e2e07e08ab448e3ae0d23472aee8a06c985f0c8815b16"
 
 [[package]]
 name = "thiserror"
-version = "1.0.37"
+version = "1.0.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "10deb33631e3c9018b9baf9dcbbc4f737320d2b576bac10f6aefa048fa407e3e"
+checksum = "d54378c645627613241d077a3a79db965db602882668f9136ac42af9ecb730ad"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.37"
+version = "1.0.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "982d17546b47146b28f7c22e3d08465f6b8903d0ea13c1660d9d84a6e7adcdbb"
+checksum = "fa0faa943b50f3db30a20aa7e265dbc66076993efed8463e8de414e5d06d3471"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.102",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -3914,21 +3202,6 @@ dependencies = [
  "num_cpus",
 ]
 
-[[package]]
-name = "time"
-version = "0.2.27"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4752a97f8eebd6854ff91f1c1824cd6160626ac4bd44287f7f4ea2035a02a242"
-dependencies = [
- "const_fn",
- "libc",
- "standback",
- "stdweb",
- "time-macros 0.1.1",
- "version_check",
- "winapi",
-]
-
 [[package]]
 name = "time"
 version = "0.3.15"
@@ -3939,17 +3212,7 @@ dependencies = [
  "libc",
  "num_threads",
  "serde",
- "time-macros 0.2.4",
-]
-
-[[package]]
-name = "time-macros"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "957e9c6e26f12cb6d0dd7fc776bb67a706312e7299aed74c8dd5b17ebb27e2f1"
-dependencies = [
- "proc-macro-hack",
- "time-macros-impl",
+ "time-macros",
 ]
 
 [[package]]
@@ -3958,19 +3221,6 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42657b1a6f4d817cda8e7a0ace261fe0cc946cf3a80314390b22cc61ae080792"
 
-[[package]]
-name = "time-macros-impl"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd3c141a1b43194f3f56a1411225df8646c55781d5f26db825b3d98507eb482f"
-dependencies = [
- "proc-macro-hack",
- "proc-macro2",
- "quote",
- "standback",
- "syn 1.0.102",
-]
-
 [[package]]
 name = "tinyvec"
 version = "1.6.0"
@@ -3993,7 +3243,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3c786bf8134e5a3a166db9b29ab8f48134739014a3eca7bc6bfa95d673b136f"
 dependencies = [
  "autocfg",
- "bytes 1.1.0",
+ "bytes",
  "libc",
  "mio",
  "num_cpus",
@@ -4011,7 +3261,7 @@ checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.38",
+ "syn 2.0.48",
 ]
 
 [[package]]
@@ -4020,7 +3270,7 @@ version = "0.23.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c43ee83903113e03984cb9e5cebe6c04a5116269e900e3ddba8f068a62adda59"
 dependencies = [
- "rustls",
+ "rustls 0.20.6",
  "tokio",
  "webpki",
 ]
@@ -4031,7 +3281,7 @@ version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0bb2e075f03b3d66d8d8785356224ba688d2906a371015e225beeb65ca92c740"
 dependencies = [
- "bytes 1.1.0",
+ "bytes",
  "futures-core",
  "futures-sink",
  "pin-project-lite",
@@ -4132,16 +3382,6 @@ dependencies = [
  "tracing-subscriber",
 ]
 
-[[package]]
-name = "tracing-futures"
-version = "0.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97d095ae15e245a057c8e8451bab9b3ee1e1f68e9ba2b4fbc18d0ac5237835f2"
-dependencies = [
- "pin-project",
- "tracing",
-]
-
 [[package]]
 name = "tracing-log"
 version = "0.1.3"
@@ -4207,15 +3447,6 @@ dependencies = [
  "syn 1.0.102",
 ]
 
-[[package]]
-name = "unicase"
-version = "2.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50f37be617794602aabbeee0be4f259dc1778fabe05e2d67ee8f79326d5cb4f6"
-dependencies = [
- "version_check",
-]
-
 [[package]]
 name = "unicode-bidi"
 version = "0.3.8"
@@ -4245,19 +3476,9 @@ checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
 
 [[package]]
 name = "unindent"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "58ee9362deb4a96cef4d437d1ad49cffc9b9e92d202b6995674e928ce684f112"
-
-[[package]]
-name = "universal-hash"
-version = "0.4.1"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f214e8f697e925001e66ec2c6e37a4ef93f0f78c2eed7814394e10c62025b05"
-dependencies = [
- "generic-array",
- "subtle",
-]
+checksum = "c7de7d73e1754487cb58364ee906a499937a0dfabd86bcb980fa99ec8c8fa2ce"
 
 [[package]]
 name = "untrusted"
@@ -4267,19 +3488,17 @@ checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
 
 [[package]]
 name = "ureq"
-version = "2.5.0"
+version = "2.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b97acb4c28a254fd7a4aeec976c46a7fa404eac4d7c134b30c75144846d7cb8f"
+checksum = "f5ccd538d4a604753ebc2f17cd9946e89b77bf87f6a8e2309667c6f2e87855e3"
 dependencies = [
- "base64 0.13.0",
- "chunked_transfer",
- "flate2",
+ "base64 0.21.0",
  "log",
  "once_cell",
- "rustls",
+ "rustls 0.21.7",
+ "rustls-webpki",
  "url",
- "webpki",
- "webpki-roots",
+ "webpki-roots 0.25.4",
 ]
 
 [[package]]
@@ -4306,7 +3525,7 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d023da39d1fde5a8a3fe1f3e01ca9632ada0a63e9797de55a879d6e2236277be"
 dependencies = [
- "getrandom 0.2.7",
+ "getrandom",
  "serde",
 ]
 
@@ -4317,26 +3536,35 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
 
 [[package]]
-name = "value-bag"
-version = "1.0.0-alpha.9"
+name = "version_check"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2209b78d1249f7e6f3293657c9779fe31ced465df091bbd433a1cf88e916ec55"
-dependencies = [
- "ctor",
- "version_check",
-]
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
 [[package]]
-name = "vcpkg"
-version = "0.2.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
+name = "voicevox-ort"
+version = "2.0.0-rc.2"
+source = "git+https://github.com/VOICEVOX/ort.git?rev=a2d6ae22327869e896bf4c16828734d09516d2d9#a2d6ae22327869e896bf4c16828734d09516d2d9"
+dependencies = [
+ "half",
+ "js-sys",
+ "ndarray",
+ "thiserror",
+ "tracing",
+ "voicevox-ort-sys",
+ "web-sys",
+]
 
 [[package]]
-name = "version_check"
-version = "0.9.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+name = "voicevox-ort-sys"
+version = "2.0.0-rc.2"
+source = "git+https://github.com/VOICEVOX/ort.git?rev=a2d6ae22327869e896bf4c16828734d09516d2d9#a2d6ae22327869e896bf4c16828734d09516d2d9"
+dependencies = [
+ "flate2",
+ "sha2",
+ "tar",
+ "ureq",
+]
 
 [[package]]
 name = "voicevox_core"
@@ -4344,6 +3572,7 @@ version = "0.0.0"
 dependencies = [
  "anyhow",
  "async_zip",
+ "camino",
  "derive-getters",
  "derive-new",
  "derive_more",
@@ -4357,24 +3586,29 @@ dependencies = [
  "humansize",
  "indexmap 2.0.0",
  "itertools 0.10.5",
+ "jlabel",
  "nanoid",
  "ndarray",
  "once_cell",
- "onnxruntime",
  "open_jtalk",
  "ouroboros",
  "pretty_assertions",
  "rayon",
  "regex",
  "rstest",
+ "rstest_reuse",
  "serde",
  "serde_json",
+ "serde_with",
+ "smallvec",
+ "strum",
  "tempfile",
  "test_util",
  "thiserror",
  "tokio",
  "tracing",
  "uuid",
+ "voicevox-ort",
  "voicevox_core_macros",
  "windows",
  "zip",
@@ -4388,6 +3622,7 @@ dependencies = [
  "anstyle-query",
  "anyhow",
  "assert_cmd",
+ "camino",
  "chrono",
  "clap 4.0.10",
  "colorchoice",
@@ -4409,7 +3644,6 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_with",
- "strum",
  "tempfile",
  "test_util",
  "thiserror",
@@ -4444,13 +3678,14 @@ dependencies = [
  "indexmap 2.0.0",
  "proc-macro2",
  "quote",
- "syn 2.0.38",
+ "syn 2.0.48",
 ]
 
 [[package]]
 name = "voicevox_core_python_api"
 version = "0.0.0"
 dependencies = [
+ "camino",
  "easy-ext",
  "log",
  "pyo3",
@@ -4472,12 +3707,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "waker-fn"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d5b2c62b4012a3e1eca5a7e077d13b3bf498c4073e33ccd58626607748ceeca"
-
 [[package]]
 name = "walkdir"
 version = "2.3.3"
@@ -4498,12 +3727,6 @@ dependencies = [
  "try-lock",
 ]
 
-[[package]]
-name = "wasi"
-version = "0.9.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
-
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
@@ -4606,13 +3829,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "wepoll-ffi"
-version = "0.1.2"
+name = "webpki-roots"
+version = "0.25.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d743fdedc5c64377b5fc2bc036b01c7fd642205a0d96356034ae3404d49eb7fb"
-dependencies = [
- "cc",
-]
+checksum = "5f20c57d8d7db6d3b86154206ae5d8fba62dd39573114de97c2cb0578251f8e1"
 
 [[package]]
 name = "which"
@@ -4890,15 +4110,6 @@ dependencies = [
  "fs-err",
 ]
 
-[[package]]
-name = "xz2"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "388c44dc09d76f1536602ead6d325eb532f5c122f17782bd57fb47baeeb767e2"
-dependencies = [
- "lzma-sys",
-]
-
 [[package]]
 name = "yansi"
 version = "0.5.1"
@@ -4917,17 +4128,17 @@ version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "537ce7411d25e54e8ae21a7ce0b15840e7bfcff15b51d697ec3266cc76bdf080"
 dependencies = [
- "aes 0.7.5",
+ "aes",
  "byteorder",
  "bzip2",
  "constant_time_eq",
  "crc32fast",
  "crossbeam-utils",
  "flate2",
- "hmac 0.12.1",
+ "hmac",
  "pbkdf2",
- "sha1 0.10.5",
- "time 0.3.15",
+ "sha1",
+ "time",
  "zstd",
 ]
 
@@ -4952,11 +4163,10 @@ dependencies = [
 
 [[package]]
 name = "zstd-sys"
-version = "2.0.5+zstd.1.5.2"
+version = "2.0.9+zstd.1.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "edc50ffce891ad571e9f9afe5039c4837bede781ac4bb13052ed7ae695518596"
+checksum = "9e16efa8a874a0481a574084d34cc26fdb3b99627480f785888deb6386506656"
 dependencies = [
  "cc",
- "libc",
  "pkg-config",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index acaa1300b..7102127d5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,16 +8,17 @@ anstream = { version = "0.5.0", default-features = false }
 anstyle-query = "1.0.0"
 anyhow = "1.0.65"
 assert_cmd = "2.0.8"
-async-std = "1.12.0"
-async_zip = "0.0.11"
+async_zip = "=0.0.16"
+bindgen = "0.69.4"
 binstall-tar = "0.4.39"
 bytes = "1.1.0"
+camino = "1.1.6"
 cbindgen = "0.24.3"
 chrono = { version = "0.4.26", default-features = false }
 clap = "4.0.10"
 color-eyre = "0.6.2"
 colorchoice = "1.0.0"
-cstr = "0.2.11"
+cstr = "0.2.11" # https://github.com/dtolnay/syn/issues/1502
 derive-getters = "0.2.0"
 derive-new = "0.5.9"
 derive_more = "0.99.17"
@@ -32,12 +33,15 @@ fs-err = "2.9.0"
 futures = "0.3.26"
 futures-core = "0.3.25"
 futures-util = "0.3.25"
+futures-lite = "2.2.0"
 heck = "0.4.1"
 humansize = "2.1.2"
 indexmap = "2.0.0"
 indicatif = "0.17.3"
+indoc = "2.0.4"
 inventory = "0.3.4"
 itertools = "0.10.5"
+jlabel = "0.1.2"
 jni = "0.21.1"
 libc = "0.2.134"
 libloading = "0.7.3"
@@ -52,19 +56,20 @@ ouroboros = "0.18.0"
 parse-display = "0.8.2"
 pretty_assertions = "1.3.0"
 proc-macro2 = "1.0.69"
-pyo3 = "0.19.2"
-pyo3-asyncio = "0.19.0"
+pyo3 = "0.20.3"
+pyo3-asyncio = "0.20.0"
 pyo3-log = "0.9.0"
 quote = "1.0.33"
 rayon = "1.6.1"
 regex = "1.10.0"
 reqwest = { version = "0.11.13", default-features = false }
 rstest = "0.15.0"
+rstest_reuse = "0.6.0"
 serde = "1.0.145"
 serde_json = "1.0.85"
 serde_with = "3.3.0"
+smallvec = "1.13.1"
 strum = "0.24.1"
-surf = "2.3.2"
 syn = "2.0.38"
 tar = "0.4.38"
 tempfile = "3.6.0"
@@ -81,13 +86,13 @@ voicevox_core = { path = "crates/voicevox_core" }
 windows = "0.43.0"
 zip = "0.6.3"
 
-[workspace.dependencies.onnxruntime]
-git = "https://github.com/VOICEVOX/onnxruntime-rs.git"
-rev = "ebb9dcb9b26ee681889b52b6db3b4f642b04a250"
+[workspace.dependencies.voicevox-ort]
+git = "https://github.com/VOICEVOX/ort.git"
+rev = "a2d6ae22327869e896bf4c16828734d09516d2d9"
 
 [workspace.dependencies.open_jtalk]
 git = "https://github.com/VOICEVOX/open_jtalk-rs.git"
-rev = "a16714ce16dec76fd0e3041a7acfa484921db3b5"
+rev = "e1940f3fd61a48bed5bbec8cd2645e13923b1f80"
 
 # FIXME: iOS対応のpull request(https://github.com/wesleywiser/process_path/pull/16)がマージされる見込みが無いため
 [workspace.dependencies.process_path]
diff --git a/build_util/make_ios_xcframework.bash b/build_util/make_ios_xcframework.bash
new file mode 100755
index 000000000..2d35fac88
--- /dev/null
+++ b/build_util/make_ios_xcframework.bash
@@ -0,0 +1,79 @@
+#!/usr/bin/env bash
+set -eu
+
+if [ ! -v IOS_X86_64_PATH ]; then # X86_64用のモジュールのディレクトリ(simulator)
+    echo "IOS_X86_64_PATHが未定義です"
+    exit 1
+fi
+if [ ! -v IOS_AARCH64_SIM_PATH ]; then # AARCH64_SIM用のモジュールのディレクトリ(simulator)
+    echo "IOS_AARCH64_SIM_PATHが未定義です"
+    exit 1
+fi
+if [ ! -v IOS_AARCH64_PATH ]; then # AARCH64用のモジュールのディレクトリ(実機)
+    echo "IOS_AARCH64_PATHが未定義です"
+    exit 1
+fi
+if [ ! -v OUTPUT_ASSET_PATH ]; then # 出力するASSETのディレクトリ
+    echo "OUTPUT_ASSET_PATHが未定義です"
+    exit 1
+fi
+
+echo "* Get original onnxruntime file name from rpath"
+output=$(otool -L "${IOS_AARCH64_PATH}/libvoicevox_core.dylib")
+matched_line=$(echo "$output" | grep "@rpath" | grep "libonnxruntime")
+if [[ $matched_line ]]; then
+    if [[ $matched_line =~ (@rpath/([^ ]+\.dylib)) ]]; then
+        dylib_string=${BASH_REMATCH[2]}
+    else
+        echo "Expected pattern not found in the matched line"
+        echo "$output"
+        exit 1
+    fi
+else
+    echo "No line containing '@rpath' and 'libonnxruntime' found"
+    echo "$output"
+    exit 1
+fi
+echo "Original onnx dylib file name: $dylib_string"
+
+echo "* Copy Framework template"
+arches=("aarch64" "sim")
+artifacts=("${IOS_AARCH64_PATH}" "${IOS_AARCH64_SIM_PATH}")
+for i in "${!arches[@]}"; do
+    arch="${arches[$i]}"
+    artifact="${artifacts[$i]}"
+    echo "* Copy Framework-${arch} template"
+    mkdir -p "Framework-${arch}/voicevox_core.framework/Headers"
+    cp -vr "crates/voicevox_core_c_api/xcframework/Frameworks/${arch}/" "Framework-${arch}/"
+    cp -v "${artifact}/voicevox_core.h" \
+        "Framework-${arch}/voicevox_core.framework/Headers/voicevox_core.h"
+done
+
+echo "* Create dylib"
+# aarch64はdylibをコピー
+cp -v "${IOS_AARCH64_PATH}/libvoicevox_core.dylib" \
+    "Framework-aarch64/voicevox_core.framework/voicevox_core"
+
+# simはx86_64とarrch64を合わせてdylib作成
+lipo -create "${IOS_X86_64_PATH}/libvoicevox_core.dylib" \
+    "${IOS_AARCH64_SIM_PATH}/libvoicevox_core.dylib" \
+    -output "Framework-sim/voicevox_core.framework/voicevox_core"
+
+for arch in "${arches[@]}"; do
+    echo "* Change ${arch} @rpath"
+    # 自身への@rpathを変更
+    install_name_tool -id "@rpath/voicevox_core.framework/voicevox_core" \
+        "Framework-${arch}/voicevox_core.framework/voicevox_core"
+
+    # 依存ライブラリonnxruntimeへの@rpathを変更
+    install_name_tool -change "@rpath/$dylib_string" \
+        "@rpath/onnxruntime.framework/onnxruntime" \
+        "Framework-${arch}/voicevox_core.framework/voicevox_core"
+done
+
+echo "* Create XCFramework"
+mkdir -p "${OUTPUT_ASSET_PATH}"
+xcodebuild -create-xcframework \
+    -framework "Framework-sim/voicevox_core.framework" \
+    -framework "Framework-aarch64/voicevox_core.framework" \
+    -output "${OUTPUT_ASSET_PATH}/voicevox_core.xcframework"
diff --git a/crates/downloader/Cargo.toml b/crates/downloader/Cargo.toml
index c0e11a1ba..20d90e087 100644
--- a/crates/downloader/Cargo.toml
+++ b/crates/downloader/Cargo.toml
@@ -1,8 +1,6 @@
 [package]
 name = "downloader"
-version = "0.0.0"
 edition.workspace = true
-publish.workspace = true
 
 [[bin]]
 name = "download"
diff --git a/crates/test_util/Cargo.toml b/crates/test_util/Cargo.toml
index 0c8f8f41d..d113b57ce 100644
--- a/crates/test_util/Cargo.toml
+++ b/crates/test_util/Cargo.toml
@@ -1,26 +1,27 @@
 [package]
 name = "test_util"
-version = "0.0.0"
 edition.workspace = true
-publish.workspace = true
 
 [dependencies]
-async_zip = { workspace = true, features = ["full"] }
+libloading.workspace = true
 once_cell.workspace = true
 serde = { workspace = true, features = ["derive"] }
 serde_json.workspace = true
-tokio = { workspace = true, features = ["fs", "io-util", "sync"] }
 
 [build-dependencies]
 anyhow.workspace = true
-async-std = { workspace = true, features = ["attributes"] }
+tokio = { workspace = true, features = ["macros", "rt-multi-thread"] }
+bindgen.workspace = true
+camino.workspace = true
 flate2.workspace = true
 fs-err.workspace = true
+indoc.workspace = true
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true, features = ["preserve_order"] }
-surf.workspace = true
+reqwest = { workspace = true, features = ["rustls-tls"] }
 tar.workspace = true
+zip.workspace = true
 
 [lints.rust]
-unsafe_code = "forbid"
+unsafe_code = "allow" # C APIのbindgen
 rust_2018_idioms = "warn"
diff --git a/crates/test_util/build.rs b/crates/test_util/build.rs
index eae3ac286..79e3bc90e 100644
--- a/crates/test_util/build.rs
+++ b/crates/test_util/build.rs
@@ -1,33 +1,94 @@
 use std::{
     env,
-    path::{Path, PathBuf},
+    io::{self, Cursor, Write as _},
+    path::Path,
 };
 
-use anyhow::ensure;
-use async_std::io::ReadExt as _;
+use anyhow::{anyhow, ensure};
+use camino::{Utf8Path, Utf8PathBuf};
 use flate2::read::GzDecoder;
+use indoc::formatdoc;
 use tar::Archive;
+use zip::{write::FileOptions, ZipWriter};
 
 #[path = "src/typing.rs"]
 mod typing;
 
 const DIC_DIR_NAME: &str = "open_jtalk_dic_utf_8-1.11";
 
-#[async_std::main]
+#[tokio::main]
 async fn main() -> anyhow::Result<()> {
-    let mut dist = PathBuf::from(env::var_os("CARGO_MANIFEST_DIR").unwrap());
-    dist.push("data");
+    let out_dir = &Utf8PathBuf::from(env::var("OUT_DIR").unwrap());
+    let dist = &Utf8Path::new(env!("CARGO_MANIFEST_DIR")).join("data");
 
     let dic_dir = dist.join(DIC_DIR_NAME);
     if !dic_dir.try_exists()? {
-        download_open_jtalk_dict(&dist).await?;
-        ensure!(dic_dir.exists(), "`{}` does not exist", dic_dir.display());
+        download_open_jtalk_dict(dist.as_ref()).await?;
+        ensure!(dic_dir.exists(), "`{dic_dir}` does not exist");
     }
 
-    generate_example_data_json(&dist)?;
+    create_sample_voice_model_file(out_dir, dist)?;
+
+    generate_example_data_json(dist.as_ref())?;
 
     println!("cargo:rerun-if-changed=build.rs");
     println!("cargo:rerun-if-changed=src/typing.rs");
+
+    generate_c_api_rs_bindings(out_dir)
+}
+
+fn create_sample_voice_model_file(out_dir: &Utf8Path, dist: &Utf8Path) -> anyhow::Result<()> {
+    const SRC: &str = "../../model/sample.vvm";
+
+    let files = fs_err::read_dir(SRC)?
+        .map(|entry| {
+            let entry = entry?;
+            let md = entry.metadata()?;
+            ensure!(!md.is_dir(), "directory in {SRC}");
+            let mtime = md.modified()?;
+            let name = entry
+                .file_name()
+                .into_string()
+                .map_err(|name| anyhow!("{name:?}"))?;
+            Ok((name, entry.path(), mtime))
+        })
+        .collect::<anyhow::Result<Vec<_>>>()?;
+
+    let output_dir = &dist.join("model");
+    let output_file = &output_dir.join("sample.vvm");
+
+    let up_to_date = fs_err::metadata(output_file)
+        .and_then(|md| md.modified())
+        .map(|t1| files.iter().all(|&(_, _, t2)| t1 >= t2));
+    let up_to_date = match up_to_date {
+        Ok(p) => p,
+        Err(e) if e.kind() == io::ErrorKind::NotFound => false,
+        Err(e) => return Err(e.into()),
+    };
+
+    if !up_to_date {
+        let mut zip = ZipWriter::new(Cursor::new(vec![]));
+        for (name, path, _) in files {
+            let content = &fs_err::read(path)?;
+            zip.start_file(name, FileOptions::default().compression_level(Some(0)))?;
+            zip.write_all(content)?;
+        }
+        let zip = zip.finish()?;
+        fs_err::create_dir_all(output_dir)?;
+        fs_err::write(output_file, zip.get_ref())?;
+    }
+
+    fs_err::write(
+        out_dir.join("sample_voice_model_file.rs"),
+        formatdoc! {"
+            pub const SAMPLE_VOICE_MODEL_FILE_PATH: &::std::primitive::str = {output_file:?};
+
+            const SAMPLE_VOICE_MODEL_FILE_C_PATH: &::std::ffi::CStr = c{output_file:?};
+            const VV_MODELS_ROOT_DIR: &::std::primitive::str = {output_dir:?};
+            ",
+        },
+    )?;
+    println!("cargo:rerun-if-changed={SRC}");
     Ok(())
 }
 
@@ -37,13 +98,11 @@ async fn download_open_jtalk_dict(dist: &Path) -> anyhow::Result<()> {
         "https://github.com/r9y9/open_jtalk/releases/download/v1.11.1/{DIC_DIR_NAME}.tar.gz"
     );
 
-    let req = surf::get(download_url);
-    let client = surf::client().with(surf::middleware::Redirect::default());
-    let mut res = client.send(req).await.map_err(surf::Error::into_inner)?;
+    let res = reqwest::get(&download_url).await?;
     ensure!(res.status() == 200, "{}", res.status());
-    let mut body_bytes = Vec::with_capacity(100 * 1024 * 1024);
-    res.read_to_end(&mut body_bytes).await?;
-    let dict_tar = GzDecoder::new(&body_bytes[..]);
+
+    let bytes = res.bytes().await?;
+    let dict_tar = GzDecoder::new(&*bytes);
 
     let mut dict_archive = Archive::new(dict_tar);
     dict_archive.unpack(dist)?;
@@ -120,3 +179,19 @@ fn generate_example_data_json(dist: &Path) -> anyhow::Result<()> {
 
     Ok(())
 }
+
+fn generate_c_api_rs_bindings(out_dir: &Utf8Path) -> anyhow::Result<()> {
+    static C_BINDINGS_PATH: &str = "../voicevox_core_c_api/include/voicevox_core.h";
+    static ADDITIONAL_C_BINDINGS_PATH: &str = "./compatible_engine.h";
+
+    bindgen::Builder::default()
+        .header(C_BINDINGS_PATH)
+        .header(ADDITIONAL_C_BINDINGS_PATH)
+        .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
+        .dynamic_library_name("CApi")
+        .generate()?
+        .write_to_file(out_dir.join("c_api.rs"))?;
+    println!("cargo:rerun-if-changed={C_BINDINGS_PATH}");
+    println!("cargo:rerun-if-changed={ADDITIONAL_C_BINDINGS_PATH}");
+    Ok(())
+}
diff --git a/crates/test_util/compatible_engine.h b/crates/test_util/compatible_engine.h
new file mode 100644
index 000000000..254fd8161
--- /dev/null
+++ b/crates/test_util/compatible_engine.h
@@ -0,0 +1,28 @@
+#include <stdint.h>
+
+bool initialize(bool use_gpu, int cpu_num_threads, bool load_all_models);
+
+bool load_model(int64_t speaker_id);
+
+bool is_model_loaded(int64_t speaker_id);
+
+void finalize();
+
+const char *metas();
+
+const char *supported_devices();
+
+bool yukarin_s_forward(int64_t length, int64_t *phoneme_list,
+                       int64_t *speaker_id, float *output);
+
+bool yukarin_sa_forward(int64_t length, int64_t *vowel_phoneme_list,
+                        int64_t *consonant_phoneme_list,
+                        int64_t *start_accent_list, int64_t *end_accent_list,
+                        int64_t *start_accent_phrase_list,
+                        int64_t *end_accent_phrase_list, int64_t *speaker_id,
+                        float *output);
+
+bool decode_forward(int64_t length, int64_t phoneme_size, float *f0,
+                    float *phoneme, int64_t *speaker_id, float *output);
+
+const char *last_error_message();
diff --git a/crates/test_util/src/lib.rs b/crates/test_util/src/lib.rs
index 05da2a33f..f234d7f76 100644
--- a/crates/test_util/src/lib.rs
+++ b/crates/test_util/src/lib.rs
@@ -1,16 +1,23 @@
 mod typing;
 
-use async_zip::{write::ZipFileWriter, Compression, ZipEntryBuilder};
+include!(concat!(env!("OUT_DIR"), "/sample_voice_model_file.rs"));
+
+#[allow(
+    non_camel_case_types,
+    non_snake_case,
+    non_upper_case_globals,
+    unused_extern_crates,
+    clippy::missing_safety_doc,
+    clippy::too_many_arguments
+)]
+pub mod c_api {
+    include!(concat!(env!("OUT_DIR"), "/c_api.rs"));
+
+    pub const SAMPLE_VOICE_MODEL_FILE_PATH: &std::ffi::CStr = super::SAMPLE_VOICE_MODEL_FILE_C_PATH;
+    pub const VV_MODELS_ROOT_DIR: &str = super::VV_MODELS_ROOT_DIR;
+}
+
 use once_cell::sync::Lazy;
-use std::{
-    collections::HashMap,
-    path::{Path, PathBuf},
-};
-use tokio::{
-    fs::{self, File},
-    io::{AsyncReadExt, AsyncWriteExt},
-    sync::Mutex,
-};
 
 pub use self::typing::{
     DecodeExampleData, DurationExampleData, ExampleData, IntonationExampleData,
@@ -21,7 +28,7 @@ pub const OPEN_JTALK_DIC_DIR: &str = concat!(
     "/data/open_jtalk_dic_utf_8-1.11"
 );
 
-pub const EXAMPLE_DATA_JSON: &str = include_str!(concat!(
+const EXAMPLE_DATA_JSON: &str = include_str!(concat!(
     env!("CARGO_MANIFEST_DIR"),
     "/data/example_data.json"
 ));
@@ -29,49 +36,3 @@ pub const EXAMPLE_DATA_JSON: &str = include_str!(concat!(
 pub static EXAMPLE_DATA: Lazy<ExampleData> = Lazy::new(|| {
     serde_json::from_str(EXAMPLE_DATA_JSON).expect("failed to parse example_data.json")
 });
-
-static PATH_MUTEX: Lazy<Mutex<HashMap<PathBuf, Mutex<()>>>> =
-    Lazy::new(|| Mutex::new(HashMap::default()));
-
-pub async fn convert_zip_vvm(dir: impl AsRef<Path>) -> PathBuf {
-    let dir = dir.as_ref();
-    let output_file_name = dir.file_name().unwrap().to_str().unwrap().to_owned() + ".vvm";
-
-    let out_file_path = PathBuf::from(env!("OUT_DIR"))
-        .join("test_data/models/")
-        .join(output_file_name);
-    let mut path_map = PATH_MUTEX.lock().await;
-    if !path_map.contains_key(&out_file_path) {
-        path_map.insert(out_file_path.clone(), Mutex::new(()));
-    }
-    let _m = path_map.get(&out_file_path).unwrap().lock().await;
-
-    if !out_file_path.exists() {
-        fs::create_dir_all(out_file_path.parent().unwrap())
-            .await
-            .unwrap();
-        let mut out_file = File::create(&out_file_path).await.unwrap();
-        let mut writer = ZipFileWriter::new(&mut out_file);
-
-        for entry in dir.read_dir().unwrap().flatten() {
-            let entry_builder = ZipEntryBuilder::new(
-                entry
-                    .path()
-                    .file_name()
-                    .unwrap()
-                    .to_str()
-                    .unwrap()
-                    .to_string(),
-                Compression::Deflate,
-            );
-            let mut entry_writer = writer.write_entry_stream(entry_builder).await.unwrap();
-            let mut file = File::open(entry.path()).await.unwrap();
-            let mut buf = Vec::with_capacity(entry.metadata().unwrap().len() as usize);
-            file.read_to_end(&mut buf).await.unwrap();
-            entry_writer.write_all(&buf).await.unwrap();
-            entry_writer.close().await.unwrap();
-        }
-        writer.close().await.unwrap();
-    }
-    out_file_path
-}
diff --git a/crates/voicevox_core/Cargo.toml b/crates/voicevox_core/Cargo.toml
index 8d7c70e7e..731862356 100644
--- a/crates/voicevox_core/Cargo.toml
+++ b/crates/voicevox_core/Cargo.toml
@@ -6,11 +6,13 @@ publish.workspace = true
 
 [features]
 default = []
-directml = ["onnxruntime/directml"]
+cuda = ["voicevox-ort/cuda"]
+directml = ["voicevox-ort/directml"]
 
 [dependencies]
 anyhow.workspace = true
-async_zip = { workspace = true, features = ["full"] }
+async_zip = { workspace = true, features = ["deflate"] }
+camino.workspace = true
 derive-getters.workspace = true
 derive-new.workspace = true
 derive_more.workspace = true
@@ -22,28 +24,33 @@ fs-err = { workspace = true, features = ["tokio"] }
 futures.workspace = true
 indexmap = { workspace = true, features = ["serde"] }
 itertools.workspace = true
+jlabel.workspace = true
 nanoid.workspace = true
 ndarray.workspace = true
 once_cell.workspace = true
-onnxruntime.workspace = true
 open_jtalk.workspace = true
 ouroboros.workspace = true
 rayon.workspace = true
 regex.workspace = true
-serde = { workspace = true, features = ["derive"] }
+serde = { workspace = true, features = ["derive", "rc"] }
 serde_json = { workspace = true, features = ["preserve_order"] }
+serde_with.workspace = true
+smallvec.workspace = true
+strum = { workspace = true, features = ["derive"] }
 tempfile.workspace = true
 thiserror.workspace = true
 tokio = { workspace = true, features = ["rt"] } # FIXME: feature-gateする
 tracing.workspace = true
 uuid = { workspace = true, features = ["v4", "serde"] }
 voicevox_core_macros = { path = "../voicevox_core_macros" }
+voicevox-ort = { workspace = true, features = ["ndarray", "download-binaries"] }
 zip.workspace = true
 
 [dev-dependencies]
 heck.workspace = true
 pretty_assertions.workspace = true
 rstest.workspace = true
+rstest_reuse.workspace = true
 test_util.workspace = true
 tokio = { workspace = true, features = ["rt", "macros"] }
 
@@ -52,5 +59,8 @@ humansize.workspace = true
 windows = { workspace = true, features = ["Win32_Foundation", "Win32_Graphics_Dxgi"] }
 
 [lints.rust]
-unsafe_code = "deny" # FIXME: あまり意味が無くなっているため潔く`allow`にする。あるいはunsafeを撲滅する
+# FIXME: `unsafe impl Send`のもあるが、以下2つのマージにより消える予定
+# * https://github.com/VOICEVOX/voicevox_core/pull/725
+# * https://github.com/VOICEVOX/voicevox_core/pull/772
+unsafe_code = "allow" # WindowsのGPU情報表示に、Win32を利用
 rust_2018_idioms = "warn"
diff --git a/crates/voicevox_core/src/__internal/doctest_fixtures.rs b/crates/voicevox_core/src/__internal/doctest_fixtures.rs
index a27478d98..f314845fe 100644
--- a/crates/voicevox_core/src/__internal/doctest_fixtures.rs
+++ b/crates/voicevox_core/src/__internal/doctest_fixtures.rs
@@ -1,9 +1,12 @@
 use std::path::Path;
 
+use camino::Utf8Path;
+
 use crate::{AccelerationMode, InitializeOptions};
 
 pub async fn synthesizer_with_sample_voice_model(
-    open_jtalk_dic_dir: impl AsRef<Path>,
+    voice_model_path: impl AsRef<Path>,
+    open_jtalk_dic_dir: impl AsRef<Utf8Path>,
 ) -> anyhow::Result<crate::tokio::Synthesizer<crate::tokio::OpenJtalk>> {
     let syntesizer = crate::tokio::Synthesizer::new(
         crate::tokio::OpenJtalk::new(open_jtalk_dic_dir).await?,
@@ -13,11 +16,7 @@ pub async fn synthesizer_with_sample_voice_model(
         },
     )?;
 
-    let model = &crate::tokio::VoiceModel::from_path(concat!(
-        env!("CARGO_MANIFEST_DIR"),
-        "/../../model/sample.vvm",
-    ))
-    .await?;
+    let model = &crate::tokio::VoiceModel::from_path(voice_model_path).await?;
     syntesizer.load_voice_model(model).await?;
 
     Ok(syntesizer)
diff --git a/crates/voicevox_core/src/__internal/interop.rs b/crates/voicevox_core/src/__internal/interop.rs
index c8cd7101f..fe46d10bc 100644
--- a/crates/voicevox_core/src/__internal/interop.rs
+++ b/crates/voicevox_core/src/__internal/interop.rs
@@ -1 +1 @@
-pub use crate::synthesizer::blocking::PerformInference;
+pub use crate::{metas::merge as merge_metas, synthesizer::blocking::PerformInference};
diff --git a/crates/voicevox_core/src/engine/acoustic_feature_extractor.rs b/crates/voicevox_core/src/engine/acoustic_feature_extractor.rs
index 4a30f71a5..5ee7ea540 100644
--- a/crates/voicevox_core/src/engine/acoustic_feature_extractor.rs
+++ b/crates/voicevox_core/src/engine/acoustic_feature_extractor.rs
@@ -61,7 +61,7 @@ static PHONEME_MAP: Lazy<HashMap<&str, i64>> = Lazy::new(|| {
 });
 
 #[derive(Debug, Clone, PartialEq, new, Default, Getters)]
-pub struct OjtPhoneme {
+pub(crate) struct OjtPhoneme {
     phoneme: String,
     #[allow(dead_code)]
     start: f32,
@@ -70,15 +70,15 @@ pub struct OjtPhoneme {
 }
 
 impl OjtPhoneme {
-    pub fn num_phoneme() -> usize {
+    pub(crate) fn num_phoneme() -> usize {
         PHONEME_MAP.len()
     }
 
-    pub fn space_phoneme() -> String {
+    fn space_phoneme() -> String {
         "pau".into()
     }
 
-    pub fn phoneme_id(&self) -> i64 {
+    pub(crate) fn phoneme_id(&self) -> i64 {
         if self.phoneme.is_empty() {
             -1
         } else {
@@ -86,7 +86,7 @@ impl OjtPhoneme {
         }
     }
 
-    pub fn convert(phonemes: &[OjtPhoneme]) -> Vec<OjtPhoneme> {
+    pub(crate) fn convert(phonemes: &[OjtPhoneme]) -> Vec<OjtPhoneme> {
         let mut phonemes = phonemes.to_owned();
         if let Some(first_phoneme) = phonemes.first_mut() {
             if first_phoneme.phoneme.contains("sil") {
diff --git a/crates/voicevox_core/src/engine/full_context_label.rs b/crates/voicevox_core/src/engine/full_context_label.rs
index efe419579..8b87048e5 100644
--- a/crates/voicevox_core/src/engine/full_context_label.rs
+++ b/crates/voicevox_core/src/engine/full_context_label.rs
@@ -1,10 +1,11 @@
-use std::collections::HashMap;
+use std::str::FromStr;
 
-use crate::engine::open_jtalk::FullcontextExtractor;
-use derive_getters::Getters;
-use derive_new::new;
-use once_cell::sync::Lazy;
-use regex::Regex;
+use crate::{
+    engine::{self, open_jtalk::FullcontextExtractor, MoraModel},
+    AccentPhraseModel,
+};
+use jlabel::{Label, Mora};
+use smallvec::SmallVec;
 
 // FIXME: 入力テキストをここで持って、メッセージに含む
 #[derive(thiserror::Error, Debug)]
@@ -20,321 +21,442 @@ enum ErrorKind {
     #[display(fmt = "Open JTalkで解釈することができませんでした")]
     OpenJtalk,
 
-    #[display(fmt = "label parse error label: {label}")]
-    LabelParse { label: String },
+    #[display(fmt = "jlabelでラベルを解釈することができませんでした")]
+    Jlabel,
 
-    #[display(fmt = "too long mora mora_phonemes: {mora_phonemes:?}")]
-    TooLongMora { mora_phonemes: Vec<Phoneme> },
-
-    #[display(fmt = "invalid mora: {mora:?}")]
-    InvalidMora { mora: Box<Mora> },
+    #[display(fmt = "too long mora")]
+    TooLongMora,
 }
 
 type Result<T> = std::result::Result<T, FullContextLabelError>;
 
-#[derive(new, Getters, Clone, PartialEq, Eq, Debug)]
-pub struct Phoneme {
-    contexts: HashMap<String, String>,
-    label: String,
-}
-
-static P3_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"(\-(.*?)\+)").unwrap());
-static A2_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"(\+(\d+|xx)\+)").unwrap());
-static A3_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"(\+(\d+|xx)/B:)").unwrap());
-static F1_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"(/F:(\d+|xx)_)").unwrap());
-static F2_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"(_(\d+|xx)\#)").unwrap());
-static F3_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"(\#(\d+|xx)_)").unwrap());
-static F5_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"(@(\d+|xx)_)").unwrap());
-static H1_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"(/H:(\d+|xx)_)").unwrap());
-static I3_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"(@(\d+|xx)\+)").unwrap());
-static J1_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"(/J:(\d+|xx)_)").unwrap());
-
-fn string_feature_by_regex(re: &Regex, label: &str) -> std::result::Result<String, ErrorKind> {
-    if let Some(caps) = re.captures(label) {
-        Ok(caps.get(2).unwrap().as_str().to_string())
-    } else {
-        Err(ErrorKind::LabelParse {
-            label: label.into(),
-        })
-    }
-}
-
-impl Phoneme {
-    fn from_label(label: impl Into<String>) -> std::result::Result<Self, ErrorKind> {
-        let mut contexts = HashMap::<String, String>::with_capacity(10);
-        let label = label.into();
-        contexts.insert("p3".into(), string_feature_by_regex(&P3_REGEX, &label)?);
-        contexts.insert("a2".into(), string_feature_by_regex(&A2_REGEX, &label)?);
-        contexts.insert("a3".into(), string_feature_by_regex(&A3_REGEX, &label)?);
-        contexts.insert("f1".into(), string_feature_by_regex(&F1_REGEX, &label)?);
-        contexts.insert("f2".into(), string_feature_by_regex(&F2_REGEX, &label)?);
-        contexts.insert("f3".into(), string_feature_by_regex(&F3_REGEX, &label)?);
-        contexts.insert("f5".into(), string_feature_by_regex(&F5_REGEX, &label)?);
-        contexts.insert("h1".into(), string_feature_by_regex(&H1_REGEX, &label)?);
-        contexts.insert("i3".into(), string_feature_by_regex(&I3_REGEX, &label)?);
-        contexts.insert("j1".into(), string_feature_by_regex(&J1_REGEX, &label)?);
-
-        Ok(Self::new(contexts, label))
-    }
-
-    pub fn phoneme(&self) -> &str {
-        self.contexts.get("p3").unwrap().as_str()
-    }
-
-    pub fn is_pause(&self) -> bool {
-        self.contexts.get("f1").unwrap().as_str() == "xx"
-    }
-}
-
-#[derive(new, Getters, Clone, PartialEq, Eq, Debug)]
-pub struct Mora {
-    consonant: Option<Phoneme>,
-    vowel: Phoneme,
+pub(crate) fn extract_full_context_label(
+    open_jtalk: &impl FullcontextExtractor,
+    text: impl AsRef<str>,
+) -> Result<Vec<AccentPhraseModel>> {
+    let labels = open_jtalk
+        .extract_fullcontext(text.as_ref())
+        .map_err(|source| FullContextLabelError {
+            context: ErrorKind::OpenJtalk,
+            source: Some(source),
+        })?;
+
+    let parsed_labels = labels
+        .into_iter()
+        .map(|s| Label::from_str(&s))
+        .collect::<std::result::Result<Vec<_>, _>>()
+        .map_err(|source| FullContextLabelError {
+            context: ErrorKind::Jlabel,
+            source: Some(source.into()),
+        })?;
+
+    generate_accent_phrases(&parsed_labels).map_err(|context| FullContextLabelError {
+        context,
+        source: None,
+    })
 }
 
-impl Mora {
-    pub fn set_context(&mut self, key: impl Into<String>, value: impl Into<String>) {
-        let key = key.into();
-        let value = value.into();
-        if let Some(ref mut consonant) = self.consonant {
-            consonant.contexts.insert(key.clone(), value.clone());
+fn generate_accent_phrases(
+    utterance: &[Label],
+) -> std::result::Result<Vec<AccentPhraseModel>, ErrorKind> {
+    let mut accent_phrases = Vec::with_capacity(
+        utterance
+            .first()
+            .map(|label| label.utterance.accent_phrase_count.into())
+            .unwrap_or(0),
+    );
+
+    let split = utterance.chunk_by(|a, b| {
+        a.breath_group_curr == b.breath_group_curr && a.accent_phrase_curr == b.accent_phrase_curr
+    });
+    for labels in split {
+        let moras = generate_moras(labels)?;
+        if moras.is_empty() {
+            continue;
         }
-        self.vowel.contexts.insert(key, value);
-    }
 
-    pub fn phonemes(&self) -> Vec<Phoneme> {
-        if self.consonant.is_some() {
-            vec![
-                self.consonant().as_ref().unwrap().clone(),
-                self.vowel.clone(),
-            ]
+        let Some(Label {
+            accent_phrase_curr: Some(ap_curr),
+            breath_group_curr: Some(bg_curr),
+            ..
+        }) = labels.first()
+        else {
+            continue;
+        };
+
+        // Breath Groupの中で最後のアクセント句かつ，Utteranceの中で最後のBreath Groupでない場合は次がpauになる
+        let pause_mora = if ap_curr.accent_phrase_position_backward == 1
+            && bg_curr.breath_group_position_backward != 1
+        {
+            Some(MoraModel::new(
+                "、".into(),
+                None,
+                None,
+                "pau".into(),
+                0.,
+                0.,
+            ))
         } else {
-            vec![self.vowel.clone()]
-        }
-    }
+            None
+        };
 
-    #[allow(dead_code)]
-    pub fn labels(&self) -> Vec<String> {
-        self.phonemes().iter().map(|p| p.label().clone()).collect()
+        // workaround for VOICEVOX/voicevox_engine#55
+        let accent = usize::from(ap_curr.accent_position).min(moras.len());
+
+        accent_phrases.push(AccentPhraseModel::new(
+            moras,
+            accent,
+            pause_mora,
+            ap_curr.is_interrogative,
+        ))
     }
+    Ok(accent_phrases)
 }
 
-#[derive(new, Getters, Clone, Debug, PartialEq, Eq)]
-pub struct AccentPhrase {
-    moras: Vec<Mora>,
-    accent: usize,
-    is_interrogative: bool,
-}
-
-impl AccentPhrase {
-    fn from_phonemes(mut phonemes: Vec<Phoneme>) -> std::result::Result<Self, ErrorKind> {
-        let mut moras = Vec::with_capacity(phonemes.len());
-        let mut mora_phonemes = Vec::with_capacity(phonemes.len());
-        for i in 0..phonemes.len() {
-            {
-                let phoneme = phonemes.get_mut(i).unwrap();
-                if phoneme.contexts().get("a2").map(|s| s.as_str()) == Some("49") {
-                    break;
-                }
-                mora_phonemes.push(phoneme.clone());
+fn generate_moras(accent_phrase: &[Label]) -> std::result::Result<Vec<MoraModel>, ErrorKind> {
+    let mut moras = Vec::with_capacity(accent_phrase.len());
+
+    let split = accent_phrase.chunk_by(|a, b| a.mora == b.mora);
+    for labels in split {
+        let labels: SmallVec<[&Label; 3]> =
+            labels.iter().filter(|label| label.mora.is_some()).collect();
+        match labels[..] {
+            [consonant, vowel] => {
+                let mora = generate_mora(Some(consonant), vowel);
+                moras.push(mora);
             }
-
-            if i + 1 == phonemes.len()
-                || phonemes.get(i).unwrap().contexts().get("a2").unwrap()
-                    != phonemes.get(i + 1).unwrap().contexts().get("a2").unwrap()
-            {
-                if mora_phonemes.len() == 1 {
-                    moras.push(Mora::new(None, mora_phonemes.get(0).unwrap().clone()));
-                } else if mora_phonemes.len() == 2 {
-                    moras.push(Mora::new(
-                        Some(mora_phonemes.get(0).unwrap().clone()),
-                        mora_phonemes.get(1).unwrap().clone(),
-                    ));
-                } else {
-                    return Err(ErrorKind::TooLongMora { mora_phonemes });
-                }
-                mora_phonemes.clear();
+            [vowel] => {
+                let mora = generate_mora(None, vowel);
+                moras.push(mora);
+            }
+            // silやpau以外の音素がないモーラは含めない
+            [] => {}
+
+            // 音素が3つ以上ある場合：
+            // position_forwardとposition_backwardが飽和している場合は無視する
+            [Label {
+                mora:
+                    Some(Mora {
+                        position_forward: 49,
+                        position_backward: 49,
+                        ..
+                    }),
+                ..
+            }, ..] => {}
+            _ => {
+                return Err(ErrorKind::TooLongMora);
             }
         }
-
-        let mora = moras.get(0).unwrap();
-        let mut accent: usize = mora
-            .vowel()
-            .contexts()
-            .get("f2")
-            .ok_or_else(|| ErrorKind::InvalidMora {
-                mora: mora.clone().into(),
-            })?
-            .parse()
-            .map_err(|_| ErrorKind::InvalidMora {
-                mora: mora.clone().into(),
-            })?;
-
-        let is_interrogative = moras
-            .last()
-            .unwrap()
-            .vowel()
-            .contexts()
-            .get("f3")
-            .map(|s| s.as_str())
-            == Some("1");
-        // workaround for VOICEVOX/voicevox_engine#55
-        if accent > moras.len() {
-            accent = moras.len();
-        }
-
-        Ok(Self::new(moras, accent, is_interrogative))
-    }
-
-    #[allow(dead_code)]
-    pub fn set_context(&mut self, key: impl Into<String>, value: impl Into<String>) {
-        let key = key.into();
-        let value = value.into();
-        for mora in self.moras.iter_mut() {
-            mora.set_context(&key, &value);
-        }
-    }
-
-    pub fn phonemes(&self) -> Vec<Phoneme> {
-        self.moras.iter().flat_map(|m| m.phonemes()).collect()
-    }
-
-    #[allow(dead_code)]
-    pub fn labels(&self) -> Vec<String> {
-        self.phonemes().iter().map(|p| p.label().clone()).collect()
-    }
-
-    #[allow(dead_code)]
-    pub fn merge(&self, accent_phrase: AccentPhrase) -> AccentPhrase {
-        let mut moras = self.moras().clone();
-        let is_interrogative = *accent_phrase.is_interrogative();
-        moras.extend(accent_phrase.moras);
-        AccentPhrase::new(moras, *self.accent(), is_interrogative)
     }
+    Ok(moras)
 }
 
-#[derive(new, Getters, Clone, PartialEq, Eq, Debug)]
-pub struct BreathGroup {
-    accent_phrases: Vec<AccentPhrase>,
+fn generate_mora(consonant: Option<&Label>, vowel: &Label) -> MoraModel {
+    let consonant_phoneme = consonant.and_then(|c| c.phoneme.c.to_owned());
+    let vowel_phoneme = vowel.phoneme.c.as_deref().unwrap();
+    MoraModel::new(
+        mora_to_text(consonant_phoneme.as_deref(), vowel_phoneme),
+        consonant_phoneme,
+        consonant.and(Some(0.0)),
+        vowel_phoneme.to_string(),
+        0.0,
+        0.0,
+    )
 }
 
-impl BreathGroup {
-    fn from_phonemes(phonemes: Vec<Phoneme>) -> std::result::Result<Self, ErrorKind> {
-        let mut accent_phrases = Vec::with_capacity(phonemes.len());
-        let mut accent_phonemes = Vec::with_capacity(phonemes.len());
-        for i in 0..phonemes.len() {
-            accent_phonemes.push(phonemes.get(i).unwrap().clone());
-            if i + 1 == phonemes.len()
-                || phonemes.get(i).unwrap().contexts().get("i3").unwrap()
-                    != phonemes.get(i + 1).unwrap().contexts().get("i3").unwrap()
-                || phonemes.get(i).unwrap().contexts().get("f5").unwrap()
-                    != phonemes.get(i + 1).unwrap().contexts().get("f5").unwrap()
-            {
-                accent_phrases.push(AccentPhrase::from_phonemes(accent_phonemes.clone())?);
-                accent_phonemes.clear();
-            }
+pub fn mora_to_text(consonant: Option<&str>, vowel: &str) -> String {
+    let mora_text = format!(
+        "{}{}",
+        consonant.unwrap_or(""),
+        match vowel {
+            phoneme @ ("A" | "I" | "U" | "E" | "O") => phoneme.to_lowercase(),
+            phoneme => phoneme.to_string(),
         }
-
-        Ok(Self::new(accent_phrases))
-    }
-
-    #[allow(dead_code)]
-    pub fn set_context(&mut self, key: impl Into<String>, value: impl Into<String>) {
-        let key = key.into();
-        let value = value.into();
-        for accent_phrase in self.accent_phrases.iter_mut() {
-            accent_phrase.set_context(&key, &value);
-        }
-    }
-
-    pub fn phonemes(&self) -> Vec<Phoneme> {
-        self.accent_phrases()
-            .iter()
-            .flat_map(|a| a.phonemes())
-            .collect()
-    }
-
-    #[allow(dead_code)]
-    pub fn labels(&self) -> Vec<String> {
-        self.phonemes().iter().map(|p| p.label().clone()).collect()
-    }
-}
-
-#[derive(new, Getters, Clone, PartialEq, Eq, Debug)]
-pub struct Utterance {
-    breath_groups: Vec<BreathGroup>,
-    pauses: Vec<Phoneme>,
+    );
+    // もしカタカナに変換できなければ、引数で与えた文字列がそのまま返ってくる
+    engine::mora2text(&mora_text).to_string()
 }
 
-impl Utterance {
-    fn from_phonemes(phonemes: Vec<Phoneme>) -> std::result::Result<Self, ErrorKind> {
-        let mut breath_groups = vec![];
-        let mut group_phonemes = Vec::with_capacity(phonemes.len());
-        let mut pauses = vec![];
-        for phoneme in phonemes.into_iter() {
-            if !phoneme.is_pause() {
-                group_phonemes.push(phoneme);
-            } else {
-                pauses.push(phoneme);
-
-                if !group_phonemes.is_empty() {
-                    breath_groups.push(BreathGroup::from_phonemes(group_phonemes.clone())?);
-                    group_phonemes.clear();
-                }
-            }
-        }
-        Ok(Self::new(breath_groups, pauses))
+#[cfg(test)]
+mod tests {
+    use rstest_reuse::*;
+
+    use ::test_util::OPEN_JTALK_DIC_DIR;
+    use rstest::rstest;
+
+    use std::str::FromStr;
+
+    use crate::{
+        engine::{
+            full_context_label::{extract_full_context_label, generate_accent_phrases},
+            open_jtalk::FullcontextExtractor,
+            MoraModel,
+        },
+        AccentPhraseModel,
+    };
+    use jlabel::Label;
+
+    fn mora(text: &str, consonant: Option<&str>, vowel: &str) -> MoraModel {
+        MoraModel::new(
+            text.into(),
+            consonant.map(|c| c.into()),
+            consonant.and(Some(0.0)),
+            vowel.into(),
+            0.0,
+            0.0,
+        )
     }
 
-    #[allow(dead_code)]
-    pub fn set_context(&mut self, key: impl Into<String>, value: impl Into<String>) {
-        let key = key.into();
-        let value = value.into();
-        for breath_group in self.breath_groups.iter_mut() {
-            breath_group.set_context(&key, &value);
-        }
+    #[template]
+    #[rstest]
+    #[case(
+        "いぇ",
+        &[
+            "xx^xx-sil+y=e/A:xx+xx+xx/B:xx-xx_xx/C:xx_xx+xx/D:xx+xx_xx/E:xx_xx!xx_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:1_1%0_xx_xx/H:xx_xx/I:xx-xx@xx+xx&xx-xx|xx+xx/J:1_1/K:1+1-1",
+            "xx^sil-y+e=sil/A:0+1+1/B:xx-xx_xx/C:09_xx+xx/D:xx+xx_xx/E:xx_xx!xx_xx-xx/F:1_1#0_xx@1_1|1_1/G:xx_xx%xx_xx_xx/H:xx_xx/I:1-1@1+1&1-1|1+1/J:xx_xx/K:1+1-1",
+            "sil^y-e+sil=xx/A:0+1+1/B:xx-xx_xx/C:09_xx+xx/D:xx+xx_xx/E:xx_xx!xx_xx-xx/F:1_1#0_xx@1_1|1_1/G:xx_xx%xx_xx_xx/H:xx_xx/I:1-1@1+1&1-1|1+1/J:xx_xx/K:1+1-1",
+            "y^e-sil+xx=xx/A:xx+xx+xx/B:xx-xx_xx/C:xx_xx+xx/D:xx+xx_xx/E:1_1!0_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:xx_xx%xx_xx_xx/H:1_1/I:xx-xx@xx+xx&xx-xx|xx+xx/J:xx_xx/K:1+1-1",
+        ],
+        &[
+            AccentPhraseModel::new(
+                vec![mora("イェ", Some("y"), "e")],
+                1,
+                None,
+                false,
+            )
+        ]
+    )]
+    #[case(
+        "んーっ",
+        &[
+            "xx^xx-sil+N=N/A:xx+xx+xx/B:xx-xx_xx/C:xx_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:3_3%0_xx_xx/H:xx_xx/I:xx-xx@xx+xx&xx-xx|xx+xx/J:1_3/K:1+1-3",
+            "xx^sil-N+N=cl/A:-2+1+3/B:xx-xx_xx/C:09_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:3_3#0_xx@1_1|1_3/G:xx_xx%xx_xx_xx/H:xx_xx/I:1-3@1+1&1-1|1+3/J:xx_xx/K:1+1-3",
+            "sil^N-N+cl=sil/A:-1+2+2/B:xx-xx_xx/C:09_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:3_3#0_xx@1_1|1_3/G:xx_xx%xx_xx_xx/H:xx_xx/I:1-3@1+1&1-1|1+3/J:xx_xx/K:1+1-3",
+            "N^N-cl+sil=xx/A:0+3+1/B:09-xx_xx/C:09_xx+xx/D:xx+xx_xx/E:xx_xx!xx_xx-xx/F:3_3#0_xx@1_1|1_3/G:xx_xx%xx_xx_xx/H:xx_xx/I:1-3@1+1&1-1|1+3/J:xx_xx/K:1+1-3",
+            "N^cl-sil+xx=xx/A:xx+xx+xx/B:09-xx_xx/C:xx_xx+xx/D:xx+xx_xx/E:3_3!0_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:xx_xx%xx_xx_xx/H:1_3/I:xx-xx@xx+xx&xx-xx|xx+xx/J:xx_xx/K:1+1-3",
+        ],
+        &[
+            AccentPhraseModel::new(
+                vec![
+                    mora("ン", None, "N"),
+                    mora("ン", None, "N"),
+                    mora("ッ", None, "cl"),
+                ],
+                3,
+                None,
+                false,
+            ),
+        ]
+    )]
+    #[case(
+        "これはテストです",
+        &[
+            "xx^xx-sil+k=o/A:xx+xx+xx/B:xx-xx_xx/C:xx_xx+xx/D:04+xx_xx/E:xx_xx!xx_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:3_3%0_xx_xx/H:xx_xx/I:xx-xx@xx+xx&xx-xx|xx+xx/J:2_8/K:1+2-8",
+            "xx^sil-k+o=r/A:-2+1+3/B:xx-xx_xx/C:04_xx+xx/D:24+xx_xx/E:xx_xx!xx_xx-xx/F:3_3#0_xx@1_2|1_8/G:5_1%0_xx_1/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "sil^k-o+r=e/A:-2+1+3/B:xx-xx_xx/C:04_xx+xx/D:24+xx_xx/E:xx_xx!xx_xx-xx/F:3_3#0_xx@1_2|1_8/G:5_1%0_xx_1/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "k^o-r+e=w/A:-1+2+2/B:xx-xx_xx/C:04_xx+xx/D:24+xx_xx/E:xx_xx!xx_xx-xx/F:3_3#0_xx@1_2|1_8/G:5_1%0_xx_1/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "o^r-e+w=a/A:-1+2+2/B:xx-xx_xx/C:04_xx+xx/D:24+xx_xx/E:xx_xx!xx_xx-xx/F:3_3#0_xx@1_2|1_8/G:5_1%0_xx_1/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "r^e-w+a=t/A:0+3+1/B:04-xx_xx/C:24_xx+xx/D:03+xx_xx/E:xx_xx!xx_xx-xx/F:3_3#0_xx@1_2|1_8/G:5_1%0_xx_1/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "e^w-a+t=e/A:0+3+1/B:04-xx_xx/C:24_xx+xx/D:03+xx_xx/E:xx_xx!xx_xx-xx/F:3_3#0_xx@1_2|1_8/G:5_1%0_xx_1/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "w^a-t+e=s/A:0+1+5/B:24-xx_xx/C:03_xx+xx/D:10+7_2/E:3_3!0_xx-1/F:5_1#0_xx@2_1|4_5/G:xx_xx%xx_xx_xx/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "a^t-e+s=U/A:0+1+5/B:24-xx_xx/C:03_xx+xx/D:10+7_2/E:3_3!0_xx-1/F:5_1#0_xx@2_1|4_5/G:xx_xx%xx_xx_xx/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "t^e-s+U=t/A:1+2+4/B:24-xx_xx/C:03_xx+xx/D:10+7_2/E:3_3!0_xx-1/F:5_1#0_xx@2_1|4_5/G:xx_xx%xx_xx_xx/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "e^s-U+t=o/A:1+2+4/B:24-xx_xx/C:03_xx+xx/D:10+7_2/E:3_3!0_xx-1/F:5_1#0_xx@2_1|4_5/G:xx_xx%xx_xx_xx/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "s^U-t+o=d/A:2+3+3/B:24-xx_xx/C:03_xx+xx/D:10+7_2/E:3_3!0_xx-1/F:5_1#0_xx@2_1|4_5/G:xx_xx%xx_xx_xx/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "U^t-o+d=e/A:2+3+3/B:24-xx_xx/C:03_xx+xx/D:10+7_2/E:3_3!0_xx-1/F:5_1#0_xx@2_1|4_5/G:xx_xx%xx_xx_xx/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "t^o-d+e=s/A:3+4+2/B:03-xx_xx/C:10_7+2/D:xx+xx_xx/E:3_3!0_xx-1/F:5_1#0_xx@2_1|4_5/G:xx_xx%xx_xx_xx/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "o^d-e+s=U/A:3+4+2/B:03-xx_xx/C:10_7+2/D:xx+xx_xx/E:3_3!0_xx-1/F:5_1#0_xx@2_1|4_5/G:xx_xx%xx_xx_xx/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "d^e-s+U=sil/A:4+5+1/B:03-xx_xx/C:10_7+2/D:xx+xx_xx/E:3_3!0_xx-1/F:5_1#0_xx@2_1|4_5/G:xx_xx%xx_xx_xx/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "e^s-U+sil=xx/A:4+5+1/B:03-xx_xx/C:10_7+2/D:xx+xx_xx/E:3_3!0_xx-1/F:5_1#0_xx@2_1|4_5/G:xx_xx%xx_xx_xx/H:xx_xx/I:2-8@1+1&1-2|1+8/J:xx_xx/K:1+2-8",
+            "s^U-sil+xx=xx/A:xx+xx+xx/B:10-7_2/C:xx_xx+xx/D:xx+xx_xx/E:5_1!0_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:xx_xx%xx_xx_xx/H:2_8/I:xx-xx@xx+xx&xx-xx|xx+xx/J:xx_xx/K:1+2-8",
+        ],
+        &[
+            AccentPhraseModel::new(
+                vec![
+                    mora("コ", Some("k"), "o"),
+                    mora("レ", Some("r"), "e"),
+                    mora("ワ", Some("w"), "a"),
+                ],
+                3,
+                None,
+                false,
+            ),
+            AccentPhraseModel::new(
+                vec![
+                    mora("テ", Some("t"), "e"),
+                    mora("ス", Some("s"), "U"),
+                    mora("ト", Some("t"), "o"),
+                    mora("デ", Some("d"), "e"),
+                    mora("ス", Some("s"), "U"),
+                ],
+                1,
+                None,
+                false,
+            ),
+        ]
+    )]
+    #[case(
+        "１、１０００、１００万、１億？",
+        &[
+            "xx^xx-sil+i=ch/A:xx+xx+xx/B:xx-xx_xx/C:xx_xx+xx/D:05+xx_xx/E:xx_xx!xx_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:2_2%0_xx_xx/H:xx_xx/I:xx-xx@xx+xx&xx-xx|xx+xx/J:1_2/K:4+4-12",
+            "xx^sil-i+ch=i/A:-1+1+2/B:xx-xx_xx/C:05_xx+xx/D:05+xx_xx/E:xx_xx!xx_xx-xx/F:2_2#0_xx@1_1|1_2/G:2_1%0_xx_0/H:xx_xx/I:1-2@1+4&1-4|1+12/J:1_2/K:4+4-12",
+            "sil^i-ch+i=pau/A:0+2+1/B:xx-xx_xx/C:05_xx+xx/D:05+xx_xx/E:xx_xx!xx_xx-xx/F:2_2#0_xx@1_1|1_2/G:2_1%0_xx_0/H:xx_xx/I:1-2@1+4&1-4|1+12/J:1_2/K:4+4-12",
+            "i^ch-i+pau=s/A:0+2+1/B:xx-xx_xx/C:05_xx+xx/D:05+xx_xx/E:xx_xx!xx_xx-xx/F:2_2#0_xx@1_1|1_2/G:2_1%0_xx_0/H:xx_xx/I:1-2@1+4&1-4|1+12/J:1_2/K:4+4-12",
+            "ch^i-pau+s=e/A:xx+xx+xx/B:05-xx_xx/C:xx_xx+xx/D:05+xx_xx/E:2_2!0_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:2_1%0_xx_xx/H:1_2/I:xx-xx@xx+xx&xx-xx|xx+xx/J:1_2/K:4+4-12",
+            "i^pau-s+e=N/A:0+1+2/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:2_2!0_xx-0/F:2_1#0_xx@1_1|1_2/G:4_3%0_xx_0/H:1_2/I:1-2@2+3&2-3|3+10/J:1_4/K:4+4-12",
+            "pau^s-e+N=pau/A:0+1+2/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:2_2!0_xx-0/F:2_1#0_xx@1_1|1_2/G:4_3%0_xx_0/H:1_2/I:1-2@2+3&2-3|3+10/J:1_4/K:4+4-12",
+            "s^e-N+pau=hy/A:1+2+1/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:2_2!0_xx-0/F:2_1#0_xx@1_1|1_2/G:4_3%0_xx_0/H:1_2/I:1-2@2+3&2-3|3+10/J:1_4/K:4+4-12",
+            "e^N-pau+hy=a/A:xx+xx+xx/B:05-xx_xx/C:xx_xx+xx/D:05+xx_xx/E:2_1!0_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:4_3%0_xx_xx/H:1_2/I:xx-xx@xx+xx&xx-xx|xx+xx/J:1_4/K:4+4-12",
+            "N^pau-hy+a=k/A:-2+1+4/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:2_1!0_xx-0/F:4_3#0_xx@1_1|1_4/G:4_2%1_xx_0/H:1_2/I:1-4@3+2&3-2|5+8/J:1_4/K:4+4-12",
+            "pau^hy-a+k=u/A:-2+1+4/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:2_1!0_xx-0/F:4_3#0_xx@1_1|1_4/G:4_2%1_xx_0/H:1_2/I:1-4@3+2&3-2|5+8/J:1_4/K:4+4-12",
+            "hy^a-k+u=m/A:-1+2+3/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:2_1!0_xx-0/F:4_3#0_xx@1_1|1_4/G:4_2%1_xx_0/H:1_2/I:1-4@3+2&3-2|5+8/J:1_4/K:4+4-12",
+            "a^k-u+m=a/A:-1+2+3/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:2_1!0_xx-0/F:4_3#0_xx@1_1|1_4/G:4_2%1_xx_0/H:1_2/I:1-4@3+2&3-2|5+8/J:1_4/K:4+4-12",
+            "k^u-m+a=N/A:0+3+2/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:2_1!0_xx-0/F:4_3#0_xx@1_1|1_4/G:4_2%1_xx_0/H:1_2/I:1-4@3+2&3-2|5+8/J:1_4/K:4+4-12",
+            "u^m-a+N=pau/A:0+3+2/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:2_1!0_xx-0/F:4_3#0_xx@1_1|1_4/G:4_2%1_xx_0/H:1_2/I:1-4@3+2&3-2|5+8/J:1_4/K:4+4-12",
+            "m^a-N+pau=i/A:1+4+1/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:2_1!0_xx-0/F:4_3#0_xx@1_1|1_4/G:4_2%1_xx_0/H:1_2/I:1-4@3+2&3-2|5+8/J:1_4/K:4+4-12",
+            "a^N-pau+i=ch/A:xx+xx+xx/B:05-xx_xx/C:xx_xx+xx/D:05+xx_xx/E:4_3!0_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:4_2%1_xx_xx/H:1_4/I:xx-xx@xx+xx&xx-xx|xx+xx/J:1_4/K:4+4-12",
+            "N^pau-i+ch=i/A:-1+1+4/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:4_3!0_xx-0/F:4_2#1_xx@1_1|1_4/G:xx_xx%xx_xx_xx/H:1_4/I:1-4@4+1&4-1|9+4/J:xx_xx/K:4+4-12",
+            "pau^i-ch+i=o/A:0+2+3/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:4_3!0_xx-0/F:4_2#1_xx@1_1|1_4/G:xx_xx%xx_xx_xx/H:1_4/I:1-4@4+1&4-1|9+4/J:xx_xx/K:4+4-12",
+            "i^ch-i+o=k/A:0+2+3/B:05-xx_xx/C:05_xx+xx/D:05+xx_xx/E:4_3!0_xx-0/F:4_2#1_xx@1_1|1_4/G:xx_xx%xx_xx_xx/H:1_4/I:1-4@4+1&4-1|9+4/J:xx_xx/K:4+4-12",
+            "ch^i-o+k=u/A:1+3+2/B:05-xx_xx/C:05_xx+xx/D:xx+xx_xx/E:4_3!0_xx-0/F:4_2#1_xx@1_1|1_4/G:xx_xx%xx_xx_xx/H:1_4/I:1-4@4+1&4-1|9+4/J:xx_xx/K:4+4-12",
+            "i^o-k+u=sil/A:2+4+1/B:05-xx_xx/C:05_xx+xx/D:xx+xx_xx/E:4_3!0_xx-0/F:4_2#1_xx@1_1|1_4/G:xx_xx%xx_xx_xx/H:1_4/I:1-4@4+1&4-1|9+4/J:xx_xx/K:4+4-12",
+            "o^k-u+sil=xx/A:2+4+1/B:05-xx_xx/C:05_xx+xx/D:xx+xx_xx/E:4_3!0_xx-0/F:4_2#1_xx@1_1|1_4/G:xx_xx%xx_xx_xx/H:1_4/I:1-4@4+1&4-1|9+4/J:xx_xx/K:4+4-12",
+            "k^u-sil+xx=xx/A:xx+xx+xx/B:05-xx_xx/C:xx_xx+xx/D:xx+xx_xx/E:4_2!1_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:xx_xx%xx_xx_xx/H:1_4/I:xx-xx@xx+xx&xx-xx|xx+xx/J:xx_xx/K:4+4-12",
+        ],
+        &[
+            AccentPhraseModel::new(
+                vec![
+                    mora("イ", None, "i"),
+                    mora("チ", Some("ch"), "i"),
+                ],
+                2,
+                Some(mora("、", None, "pau")),
+                false,
+            ),
+            AccentPhraseModel::new(
+                vec![
+                    mora("セ", Some("s"), "e"),
+                    mora("ン", None, "N"),
+                ],
+                1,
+                Some(mora("、", None, "pau")),
+                false,
+            ),
+            AccentPhraseModel::new(
+                vec![
+                    mora("ヒャ", Some("hy"), "a"),
+                    mora("ク", Some("k"), "u"),
+                    mora("マ", Some("m"), "a"),
+                    mora("ン", None, "N"),
+                ],
+                3,
+                Some(mora("、", None, "pau")),
+                false,
+            ),
+            AccentPhraseModel::new(
+                vec![
+                    mora("イ", None, "i"),
+                    mora("チ", Some("ch"), "i"),
+                    mora("オ", None, "o"),
+                    mora("ク", Some("k"), "u"),
+                ],
+                2,
+                None,
+                true,
+            ),
+        ]
+    )]
+    #[case(
+        "クヮルテット。あーあ、。",
+        &[
+            "xx^xx-sil+kw=a/A:xx+xx+xx/B:xx-xx_xx/C:xx_xx+xx/D:02+xx_xx/E:xx_xx!xx_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:5_3%0_xx_xx/H:xx_xx/I:xx-xx@xx+xx&xx-xx|xx+xx/J:1_5/K:2+3-8",
+            "xx^sil-kw+a=r/A:-2+1+5/B:xx-xx_xx/C:02_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:5_3#0_xx@1_1|1_5/G:2_1%0_xx_0/H:xx_xx/I:1-5@1+2&1-3|1+8/J:2_3/K:2+3-8",
+            "sil^kw-a+r=u/A:-2+1+5/B:xx-xx_xx/C:02_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:5_3#0_xx@1_1|1_5/G:2_1%0_xx_0/H:xx_xx/I:1-5@1+2&1-3|1+8/J:2_3/K:2+3-8",
+            "kw^a-r+u=t/A:-1+2+4/B:xx-xx_xx/C:02_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:5_3#0_xx@1_1|1_5/G:2_1%0_xx_0/H:xx_xx/I:1-5@1+2&1-3|1+8/J:2_3/K:2+3-8",
+            "a^r-u+t=e/A:-1+2+4/B:xx-xx_xx/C:02_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:5_3#0_xx@1_1|1_5/G:2_1%0_xx_0/H:xx_xx/I:1-5@1+2&1-3|1+8/J:2_3/K:2+3-8",
+            "r^u-t+e=cl/A:0+3+3/B:xx-xx_xx/C:02_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:5_3#0_xx@1_1|1_5/G:2_1%0_xx_0/H:xx_xx/I:1-5@1+2&1-3|1+8/J:2_3/K:2+3-8",
+            "u^t-e+cl=t/A:0+3+3/B:xx-xx_xx/C:02_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:5_3#0_xx@1_1|1_5/G:2_1%0_xx_0/H:xx_xx/I:1-5@1+2&1-3|1+8/J:2_3/K:2+3-8",
+            "t^e-cl+t=o/A:1+4+2/B:xx-xx_xx/C:02_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:5_3#0_xx@1_1|1_5/G:2_1%0_xx_0/H:xx_xx/I:1-5@1+2&1-3|1+8/J:2_3/K:2+3-8",
+            "e^cl-t+o=pau/A:2+5+1/B:xx-xx_xx/C:02_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:5_3#0_xx@1_1|1_5/G:2_1%0_xx_0/H:xx_xx/I:1-5@1+2&1-3|1+8/J:2_3/K:2+3-8",
+            "cl^t-o+pau=a/A:2+5+1/B:xx-xx_xx/C:02_xx+xx/D:09+xx_xx/E:xx_xx!xx_xx-xx/F:5_3#0_xx@1_1|1_5/G:2_1%0_xx_0/H:xx_xx/I:1-5@1+2&1-3|1+8/J:2_3/K:2+3-8",
+            "t^o-pau+a=a/A:xx+xx+xx/B:02-xx_xx/C:xx_xx+xx/D:09+xx_xx/E:5_3!0_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:2_1%0_xx_xx/H:1_5/I:xx-xx@xx+xx&xx-xx|xx+xx/J:2_3/K:2+3-8",
+            "o^pau-a+a=a/A:0+1+2/B:02-xx_xx/C:09_xx+xx/D:09+xx_xx/E:5_3!0_xx-0/F:2_1#0_xx@1_2|1_3/G:1_1%0_xx_1/H:1_5/I:2-3@2+1&2-2|6+3/J:xx_xx/K:2+3-8",
+            "pau^a-a+a=sil/A:1+2+1/B:02-xx_xx/C:09_xx+xx/D:09+xx_xx/E:5_3!0_xx-0/F:2_1#0_xx@1_2|1_3/G:1_1%0_xx_1/H:1_5/I:2-3@2+1&2-2|6+3/J:xx_xx/K:2+3-8",
+            "a^a-a+sil=xx/A:0+1+1/B:09-xx_xx/C:09_xx+xx/D:xx+xx_xx/E:2_1!0_xx-1/F:1_1#0_xx@2_1|3_1/G:xx_xx%xx_xx_xx/H:1_5/I:2-3@2+1&2-2|6+3/J:xx_xx/K:2+3-8",
+            "a^a-sil+xx=xx/A:xx+xx+xx/B:09-xx_xx/C:xx_xx+xx/D:xx+xx_xx/E:1_1!0_xx-xx/F:xx_xx#xx_xx@xx_xx|xx_xx/G:xx_xx%xx_xx_xx/H:2_3/I:xx-xx@xx+xx&xx-xx|xx+xx/J:xx_xx/K:2+3-8",
+        ],
+        &[
+            AccentPhraseModel::new(
+                vec![
+                    mora("クヮ", Some("kw"), "a"),
+                    mora("ル", Some("r"), "u"),
+                    mora("テ", Some("t"), "e"),
+                    mora("ッ", None, "cl"),
+                    mora("ト", Some("t"), "o"),
+                ],
+                3,
+                Some(mora("、", None, "pau")),
+                false,
+            ),
+            AccentPhraseModel::new(
+                vec![
+                    mora("ア", None, "a"),
+                    mora("ア", None, "a"),
+                ],
+                1,
+                None,
+                false,
+            ),
+            AccentPhraseModel::new(
+                vec![mora("ア", None, "a")],
+                1,
+                None,
+                false,
+            ),
+        ]
+    )]
+    fn label_cases(
+        #[case] text: &str,
+        #[case] labels: &[&str],
+        #[case] accent_phrase: &[AccentPhraseModel],
+    ) {
     }
 
-    #[allow(dead_code)]
-    pub fn phonemes(&self) -> Vec<Phoneme> {
-        // TODO:実装が中途半端なのであとでちゃんと実装する必要があるらしい
-        // https://github.com/VOICEVOX/voicevox_core/pull/174#discussion_r919982651
-        let mut phonemes = Vec::with_capacity(self.breath_groups.len());
-
-        for i in 0..self.pauses().len() {
-            phonemes.push(self.pauses().get(i).unwrap().clone());
-            if i < self.pauses().len() - 1 {
-                let p = self.breath_groups().get(i).unwrap().phonemes();
-                phonemes.extend(p);
-            }
-        }
-        phonemes
+    #[apply(label_cases)]
+    #[tokio::test]
+    async fn open_jtalk(text: &str, labels: &[&str], _accent_phrase: &[AccentPhraseModel]) {
+        let open_jtalk = crate::tokio::OpenJtalk::new(OPEN_JTALK_DIC_DIR)
+            .await
+            .unwrap();
+        assert_eq!(&open_jtalk.extract_fullcontext(text).unwrap(), labels);
     }
 
-    #[allow(dead_code)]
-    pub fn labels(&self) -> Vec<String> {
-        self.phonemes().iter().map(|p| p.label().clone()).collect()
-    }
+    #[apply(label_cases)]
+    fn parse_labels(_text: &str, labels: &[&str], accent_phrase: &[AccentPhraseModel]) {
+        let parsed_labels = labels
+            .iter()
+            .map(|s| Label::from_str(s).unwrap())
+            .collect::<Vec<_>>();
 
-    pub(crate) fn extract_full_context_label(
-        open_jtalk: &impl FullcontextExtractor,
-        text: impl AsRef<str>,
-    ) -> Result<Self> {
-        let labels = open_jtalk
-            .extract_fullcontext(text.as_ref())
-            .map_err(|source| FullContextLabelError {
-                context: ErrorKind::OpenJtalk,
-                source: Some(source),
-            })?;
+        assert_eq!(
+            &generate_accent_phrases(&parsed_labels).unwrap(),
+            accent_phrase
+        );
+    }
 
-        labels
-            .into_iter()
-            .map(Phoneme::from_label)
-            .collect::<std::result::Result<Vec<_>, _>>()
-            .and_then(Self::from_phonemes)
-            .map_err(|context| FullContextLabelError {
-                context,
-                source: None,
-            })
+    #[apply(label_cases)]
+    #[tokio::test]
+    async fn extract_fullcontext(
+        text: &str,
+        _labels: &[&str],
+        accent_phrase: &[AccentPhraseModel],
+    ) {
+        let open_jtalk = crate::tokio::OpenJtalk::new(OPEN_JTALK_DIC_DIR)
+            .await
+            .unwrap();
+        assert_eq!(
+            &extract_full_context_label(&open_jtalk, text).unwrap(),
+            accent_phrase
+        );
     }
 }
diff --git a/crates/voicevox_core/src/engine/kana_parser.rs b/crates/voicevox_core/src/engine/kana_parser.rs
index fe10c5b3f..eaa3d93c1 100644
--- a/crates/voicevox_core/src/engine/kana_parser.rs
+++ b/crates/voicevox_core/src/engine/kana_parser.rs
@@ -163,7 +163,7 @@ pub(crate) fn parse_kana(text: &str) -> KanaParseResult<Vec<AccentPhraseModel>>
     Ok(parsed_result)
 }
 
-pub fn create_kana(accent_phrases: &[AccentPhraseModel]) -> String {
+pub(crate) fn create_kana(accent_phrases: &[AccentPhraseModel]) -> String {
     let mut text = String::new();
     for phrase in accent_phrases {
         let moras = phrase.moras();
diff --git a/crates/voicevox_core/src/engine/mod.rs b/crates/voicevox_core/src/engine/mod.rs
index 1c7422e76..95fe3d562 100644
--- a/crates/voicevox_core/src/engine/mod.rs
+++ b/crates/voicevox_core/src/engine/mod.rs
@@ -6,7 +6,9 @@ mod mora_list;
 pub(crate) mod open_jtalk;
 
 pub(crate) use self::acoustic_feature_extractor::OjtPhoneme;
-pub(crate) use self::full_context_label::{FullContextLabelError, Utterance};
+pub(crate) use self::full_context_label::{
+    extract_full_context_label, mora_to_text, FullContextLabelError,
+};
 pub(crate) use self::kana_parser::{create_kana, parse_kana, KanaParseError};
 pub use self::model::{AccentPhraseModel, AudioQueryModel, MoraModel};
 pub(crate) use self::mora_list::mora2text;
diff --git a/crates/voicevox_core/src/engine/model.rs b/crates/voicevox_core/src/engine/model.rs
index 77adbebe7..de0f388f9 100644
--- a/crates/voicevox_core/src/engine/model.rs
+++ b/crates/voicevox_core/src/engine/model.rs
@@ -5,7 +5,7 @@ use serde::{Deserialize, Serialize};
 /* 各フィールドのjsonフィールド名はsnake_caseとする*/
 
 /// モーラ（子音＋母音）ごとの情報。
-#[derive(Clone, Debug, new, Getters, Deserialize, Serialize)]
+#[derive(Clone, Debug, new, Getters, Deserialize, Serialize, PartialEq)]
 pub struct MoraModel {
     /// 文字。
     text: String,
@@ -22,7 +22,7 @@ pub struct MoraModel {
 }
 
 /// AccentPhrase (アクセント句ごとの情報)。
-#[derive(Clone, Debug, new, Getters, Deserialize, Serialize)]
+#[derive(Clone, Debug, new, Getters, Deserialize, Serialize, PartialEq)]
 pub struct AccentPhraseModel {
     /// モーラの配列。
     moras: Vec<MoraModel>,
diff --git a/crates/voicevox_core/src/engine/mora_list.rs b/crates/voicevox_core/src/engine/mora_list.rs
index 9c2c8d188..6e4b8ba2b 100644
--- a/crates/voicevox_core/src/engine/mora_list.rs
+++ b/crates/voicevox_core/src/engine/mora_list.rs
@@ -186,7 +186,7 @@ pub(super) const MORA_LIST_MINIMUM: &[[&str; 3]] = &[
     ["ア", "", "a"],
 ];
 
-pub fn mora2text(mora: &str) -> &str {
+pub(crate) fn mora2text(mora: &str) -> &str {
     for &[text, consonant, vowel] in MORA_LIST_MINIMUM {
         if mora.len() >= consonant.len()
             && &mora[..consonant.len()] == consonant
diff --git a/crates/voicevox_core/src/engine/open_jtalk.rs b/crates/voicevox_core/src/engine/open_jtalk.rs
index ad1f8c19e..88d16f381 100644
--- a/crates/voicevox_core/src/engine/open_jtalk.rs
+++ b/crates/voicevox_core/src/engine/open_jtalk.rs
@@ -15,11 +15,11 @@ pub trait FullcontextExtractor: Clone + Send + Sync + 'static {
 pub(crate) mod blocking {
     use std::{
         io::Write as _,
-        path::Path,
         sync::{Arc, Mutex},
     };
 
-    use anyhow::anyhow;
+    use anyhow::Context as _;
+    use camino::{Utf8Path, Utf8PathBuf};
     use open_jtalk::{mecab_dict_index, text2mecab, JpCommon, ManagedResource, Mecab, Njd};
     use tempfile::NamedTempFile;
 
@@ -32,12 +32,8 @@ pub(crate) mod blocking {
     pub struct OpenJtalk(pub(super) Arc<Inner>);
 
     impl self::OpenJtalk {
-        pub fn new(open_jtalk_dict_dir: impl AsRef<Path>) -> crate::result::Result<Self> {
-            let dict_dir = open_jtalk_dict_dir
-                .as_ref()
-                .to_str()
-                .unwrap_or_else(|| todo!()) // FIXME: `camino::Utf8Path`を要求するようにする
-                .to_owned();
+        pub fn new(open_jtalk_dict_dir: impl AsRef<Utf8Path>) -> crate::result::Result<Self> {
+            let dict_dir = open_jtalk_dict_dir.as_ref().to_owned();
 
             // FIXME: この`{}`はGitのdiffを抑えるためだけに存在
             {
@@ -47,11 +43,12 @@ pub(crate) mod blocking {
                     jpcommon: ManagedResource::initialize(),
                 };
 
-                let result = resources.mecab.load(&*dict_dir);
-                if !result {
-                    // FIXME: 「システム辞書を読もうとしたけど読めなかった」というエラーをちゃんと用意する
-                    return Err(ErrorRepr::NotLoadedOpenjtalkDict.into());
-                }
+                // FIXME: 「システム辞書を読もうとしたけど読めなかった」というエラーをちゃんと用意する
+                resources
+                    .mecab
+                    .load(&*dict_dir)
+                    .inspect_err(|e| tracing::error!("{e:?}"))
+                    .map_err(|_| ErrorRepr::NotLoadedOpenjtalkDict)?;
 
                 Ok(Self(Arc::new(Inner {
                     resources: Mutex::new(resources),
@@ -124,13 +121,16 @@ pub(crate) mod blocking {
 
     pub(super) struct Inner {
         resources: std::sync::Mutex<Resources>,
-        dict_dir: String, // FIXME: `camino::Utf8PathBuf`にする
+        dict_dir: Utf8PathBuf,
     }
 
     impl Inner {
-        // FIXME: 中断可能にする
+        // TODO: 中断可能にする
         pub(super) fn use_user_dict(&self, words: &str) -> crate::result::Result<()> {
-            let result = {
+            // 空の辞書を読み込もうとするとクラッシュするのでユーザー辞書なしでロード
+            if words.is_empty() {
+                self.load_with_userdic(None)
+            } else {
                 // ユーザー辞書用のcsvを作成
                 let mut temp_csv =
                     NamedTempFile::new().map_err(|e| ErrorRepr::UseUserDict(e.into()))?;
@@ -142,34 +142,37 @@ pub(crate) mod blocking {
                     NamedTempFile::new().map_err(|e| ErrorRepr::UseUserDict(e.into()))?;
                 let temp_dict_path = temp_dict.into_temp_path();
 
+                // FIXME: `.unwrap()`ではなく、エラーとして回収する
+                let temp_csv_path = Utf8Path::from_path(temp_csv_path.as_ref()).unwrap();
+                let temp_dict_path = Utf8Path::from_path(temp_dict_path.as_ref()).unwrap();
+
                 // Mecabでユーザー辞書をコンパイル
                 // TODO: エラー（SEGV）が出るパターンを把握し、それをRust側で防ぐ。
                 mecab_dict_index(&[
                     "mecab-dict-index",
                     "-d",
-                    &self.dict_dir,
+                    self.dict_dir.as_ref(),
                     "-u",
-                    temp_dict_path.to_str().unwrap(),
+                    temp_dict_path.as_ref(),
                     "-f",
                     "utf-8",
                     "-t",
                     "utf-8",
-                    temp_csv_path.to_str().unwrap(),
+                    temp_csv_path.as_ref(),
                     "-q",
                 ]);
 
-                let Resources { mecab, .. } = &mut *self.resources.lock().unwrap();
-
-                mecab.load_with_userdic(self.dict_dir.as_ref(), Some(Path::new(&temp_dict_path)))
-            };
-
-            if !result {
-                return Err(
-                    ErrorRepr::UseUserDict(anyhow!("辞書のコンパイルに失敗しました")).into(),
-                );
+                self.load_with_userdic(Some(temp_dict_path))
             }
-
-            Ok(())
+        }
+        fn load_with_userdic(&self, dict_path: Option<&Utf8Path>) -> crate::result::Result<()> {
+            let Resources { mecab, .. } = &mut *self.resources.lock().unwrap();
+
+            mecab
+                .load_with_userdic(self.dict_dir.as_ref(), dict_path)
+                .context("辞書を読み込めませんでした。")
+                .map_err(ErrorRepr::UseUserDict)
+                .map_err(Into::into)
         }
     }
 
@@ -178,14 +181,10 @@ pub(crate) mod blocking {
         njd: ManagedResource<Njd>,
         jpcommon: ManagedResource<JpCommon>,
     }
-
-    // FIXME: open_jtalk-rs側で宣言する
-    #[allow(unsafe_code)]
-    unsafe impl Send for Resources {}
 }
 
 pub(crate) mod tokio {
-    use std::path::Path;
+    use camino::Utf8Path;
 
     use super::FullcontextExtractor;
 
@@ -194,7 +193,7 @@ pub(crate) mod tokio {
     pub struct OpenJtalk(super::blocking::OpenJtalk);
 
     impl self::OpenJtalk {
-        pub async fn new(open_jtalk_dict_dir: impl AsRef<Path>) -> crate::result::Result<Self> {
+        pub async fn new(open_jtalk_dict_dir: impl AsRef<Utf8Path>) -> crate::result::Result<Self> {
             let open_jtalk_dict_dir = open_jtalk_dict_dir.as_ref().to_owned();
             let blocking =
                 crate::task::asyncify(|| super::blocking::OpenJtalk::new(open_jtalk_dict_dir))
diff --git a/crates/voicevox_core/src/error.rs b/crates/voicevox_core/src/error.rs
index 19d464d21..916964429 100644
--- a/crates/voicevox_core/src/error.rs
+++ b/crates/voicevox_core/src/error.rs
@@ -1,11 +1,12 @@
 use crate::{
     engine::{FullContextLabelError, KanaParseError},
     user_dict::InvalidWordError,
-    StyleId, VoiceModelId,
+    StyleId, StyleType, VoiceModelId,
 };
 //use engine::
 use duplicate::duplicate_item;
-use std::path::PathBuf;
+use itertools::Itertools as _;
+use std::{collections::BTreeSet, path::PathBuf};
 use thiserror::Error;
 use uuid::Uuid;
 
@@ -38,6 +39,7 @@ impl Error {
                 LoadModelErrorKind::ReadZipEntry { .. } => ErrorKind::ReadZipEntry,
                 LoadModelErrorKind::ModelAlreadyLoaded { .. } => ErrorKind::ModelAlreadyLoaded,
                 LoadModelErrorKind::StyleAlreadyLoaded { .. } => ErrorKind::StyleAlreadyLoaded,
+                LoadModelErrorKind::InvalidModelFormat { .. } => ErrorKind::InvalidModelFormat,
                 LoadModelErrorKind::InvalidModelData => ErrorKind::InvalidModelData,
             },
             ErrorRepr::GetSupportedDevices(_) => ErrorKind::GetSupportedDevices,
@@ -70,10 +72,14 @@ pub(crate) enum ErrorRepr {
     GetSupportedDevices(#[source] anyhow::Error),
 
     #[error(
-        "`{style_id}`に対するスタイルが見つかりませんでした。音声モデルが読み込まれていないか、読\
-         み込みが解除されています"
+        "`{style_id}` ([{style_types}])に対するスタイルが見つかりませんでした。音声モデルが\
+         読み込まれていないか、読み込みが解除されています",
+        style_types = style_types.iter().format(", ")
     )]
-    StyleNotFound { style_id: StyleId },
+    StyleNotFound {
+        style_id: StyleId,
+        style_types: &'static BTreeSet<StyleType>,
+    },
 
     #[error(
         "`{model_id}`に対する音声モデルが見つかりませんでした。読み込まれていないか、読み込みが既\
@@ -117,6 +123,8 @@ pub enum ErrorKind {
     OpenZipFile,
     /// ZIP内のファイルが読めなかった。
     ReadZipEntry,
+    /// モデルの形式が不正。
+    InvalidModelFormat,
     /// すでに読み込まれている音声モデルを読み込もうとした。
     ModelAlreadyLoaded,
     /// すでに読み込まれているスタイルを読み込もうとした。
@@ -165,6 +173,8 @@ pub(crate) enum LoadModelErrorKind {
     OpenZipFile,
     #[display(fmt = "`{filename}`を読み取れませんでした")]
     ReadZipEntry { filename: String },
+    #[display(fmt = "モデルの形式が不正です")]
+    InvalidModelFormat,
     #[display(fmt = "モデル`{id}`は既に読み込まれています")]
     ModelAlreadyLoaded { id: VoiceModelId },
     #[display(fmt = "スタイル`{id}`は既に読み込まれています")]
diff --git a/crates/voicevox_core/src/infer.rs b/crates/voicevox_core/src/infer.rs
index c816c9899..c2cad1d7d 100644
--- a/crates/voicevox_core/src/infer.rs
+++ b/crates/voicevox_core/src/infer.rs
@@ -1,9 +1,9 @@
-pub(crate) mod domain;
+pub(crate) mod domains;
 mod model_file;
 pub(crate) mod runtimes;
-pub(crate) mod status;
+pub(crate) mod session_set;
 
-use std::{borrow::Cow, fmt::Debug};
+use std::{borrow::Cow, collections::BTreeSet, fmt::Debug};
 
 use derive_new::new;
 use duplicate::duplicate_item;
@@ -11,9 +11,10 @@ use enum_map::{Enum, EnumMap};
 use ndarray::{Array, ArrayD, Dimension, ShapeError};
 use thiserror::Error;
 
-use crate::SupportedDevices;
+use crate::{StyleType, SupportedDevices};
 
 pub(crate) trait InferenceRuntime: 'static {
+    // TODO: "session"とは何なのかを定め、ドキュメントを書く。`InferenceSessionSet`も同様。
     type Session: Sized + Send + 'static;
     type RunContext<'a>: From<&'a mut Self::Session> + PushInputTensor;
 
@@ -32,9 +33,17 @@ pub(crate) trait InferenceRuntime: 'static {
     fn run(ctx: Self::RunContext<'_>) -> anyhow::Result<Vec<OutputTensor>>;
 }
 
-/// ある`VoiceModel`が提供する推論操作の集合を示す。
-pub(crate) trait InferenceDomain {
+/// 共に扱われるべき推論操作の集合を示す。
+pub(crate) trait InferenceDomain: Sized {
     type Operation: InferenceOperation;
+
+    /// 対応する`StyleType`。
+    ///
+    /// 複数の`InferenceDomain`に対応する`StyleType`があってもよい。
+    ///
+    /// また、どの`InferenceDomain`にも属さない`StyleType`があってもよい。そのような`StyleType`は
+    /// 音声モデルのロード時に単に拒否されるべきである。
+    fn style_types() -> &'static BTreeSet<StyleType>;
 }
 
 /// `InferenceDomain`の推論操作を表す列挙型。
@@ -70,16 +79,20 @@ pub(crate) trait InferenceSignature: Sized + Send + 'static {
 pub(crate) trait InferenceInputSignature: Send + 'static {
     type Signature: InferenceSignature<Input = Self>;
     const PARAM_INFOS: &'static [ParamInfo<InputScalarKind>];
-    fn make_run_context<R: InferenceRuntime>(self, sess: &mut R::Session) -> R::RunContext<'_>;
+    fn make_run_context<R: InferenceRuntime>(
+        self,
+        sess: &mut R::Session,
+    ) -> anyhow::Result<R::RunContext<'_>>;
 }
 
 pub(crate) trait InputScalar: Sized {
     const KIND: InputScalarKind;
 
+    // TODO: `Array`ではなく`ArrayView`を取ることができるかもしれない
     fn push_tensor_to_ctx(
         tensor: Array<Self, impl Dimension + 'static>,
         visitor: &mut impl PushInputTensor,
-    );
+    ) -> anyhow::Result<()>;
 }
 
 #[duplicate_item(
@@ -93,8 +106,8 @@ impl InputScalar for T {
     fn push_tensor_to_ctx(
         tensor: Array<Self, impl Dimension + 'static>,
         ctx: &mut impl PushInputTensor,
-    ) {
-        ctx.push(tensor);
+    ) -> anyhow::Result<()> {
+        ctx.push(tensor)
     }
 }
 
@@ -108,8 +121,8 @@ pub(crate) enum InputScalarKind {
 }
 
 pub(crate) trait PushInputTensor {
-    fn push_int64(&mut self, tensor: Array<i64, impl Dimension + 'static>);
-    fn push_float32(&mut self, tensor: Array<f32, impl Dimension + 'static>);
+    fn push_int64(&mut self, tensor: Array<i64, impl Dimension + 'static>) -> anyhow::Result<()>;
+    fn push_float32(&mut self, tensor: Array<f32, impl Dimension + 'static>) -> anyhow::Result<()>;
 }
 
 /// 推論操作の出力シグネチャ。
diff --git a/crates/voicevox_core/src/infer/domains.rs b/crates/voicevox_core/src/infer/domains.rs
new file mode 100644
index 000000000..687550399
--- /dev/null
+++ b/crates/voicevox_core/src/infer/domains.rs
@@ -0,0 +1,22 @@
+mod talk;
+
+pub(crate) use self::talk::{
+    DecodeInput, DecodeOutput, PredictDurationInput, PredictDurationOutput, PredictIntonationInput,
+    PredictIntonationOutput, TalkDomain, TalkOperation,
+};
+
+pub(crate) struct InferenceDomainMap<V: InferenceDomainMapValues + ?Sized> {
+    pub(crate) talk: V::Talk,
+}
+
+pub(crate) trait InferenceDomainMapValues {
+    type Talk;
+}
+
+impl<T> InferenceDomainMapValues for (T,) {
+    type Talk = T;
+}
+
+impl<A> InferenceDomainMapValues for [A] {
+    type Talk = A;
+}
diff --git a/crates/voicevox_core/src/infer/domain.rs b/crates/voicevox_core/src/infer/domains/talk.rs
similarity index 82%
rename from crates/voicevox_core/src/infer/domain.rs
rename to crates/voicevox_core/src/infer/domains/talk.rs
index bb83886dd..e0716fa50 100644
--- a/crates/voicevox_core/src/infer/domain.rs
+++ b/crates/voicevox_core/src/infer/domains/talk.rs
@@ -1,22 +1,32 @@
+use std::collections::BTreeSet;
+
 use enum_map::Enum;
 use macros::{InferenceInputSignature, InferenceOperation, InferenceOutputSignature};
 use ndarray::{Array0, Array1, Array2};
+use once_cell::sync::Lazy;
+
+use crate::StyleType;
 
-use super::{
+use super::super::{
     InferenceDomain, InferenceInputSignature as _, InferenceOutputSignature as _, OutputTensor,
 };
 
-pub(crate) enum InferenceDomainImpl {}
+pub(crate) enum TalkDomain {}
+
+impl InferenceDomain for TalkDomain {
+    type Operation = TalkOperation;
 
-impl InferenceDomain for InferenceDomainImpl {
-    type Operation = InferenceOperationImpl;
+    fn style_types() -> &'static BTreeSet<StyleType> {
+        static STYLE_TYPES: Lazy<BTreeSet<StyleType>> = Lazy::new(|| [StyleType::Talk].into());
+        &STYLE_TYPES
+    }
 }
 
 #[derive(Clone, Copy, Enum, InferenceOperation)]
 #[inference_operation(
-    type Domain = InferenceDomainImpl;
+    type Domain = TalkDomain;
 )]
-pub(crate) enum InferenceOperationImpl {
+pub(crate) enum TalkOperation {
     #[inference_operation(
         type Input = PredictDurationInput;
         type Output = PredictDurationOutput;
diff --git a/crates/voicevox_core/src/infer/runtimes/onnxruntime.rs b/crates/voicevox_core/src/infer/runtimes/onnxruntime.rs
index a22503055..f8f376837 100644
--- a/crates/voicevox_core/src/infer/runtimes/onnxruntime.rs
+++ b/crates/voicevox_core/src/infer/runtimes/onnxruntime.rs
@@ -1,18 +1,15 @@
 use std::{fmt::Debug, vec};
 
-use anyhow::anyhow;
+use anyhow::{anyhow, bail, ensure};
 use duplicate::duplicate_item;
 use ndarray::{Array, Dimension};
-use once_cell::sync::Lazy;
-use onnxruntime::{
-    environment::Environment, GraphOptimizationLevel, LoggingLevel, TensorElementDataType,
-    TypeToTensorElementDataType,
+use ort::{
+    CPUExecutionProvider, CUDAExecutionProvider, DirectMLExecutionProvider, ExecutionProvider as _,
+    GraphOptimizationLevel, IntoTensorElementType, TensorElementType, ValueType,
 };
 
 use crate::{devices::SupportedDevices, error::ErrorRepr};
 
-use self::assert_send::AssertSend;
-
 use super::super::{
     DecryptModelError, InferenceRuntime, InferenceSessionOptions, InputScalarKind,
     OutputScalarKind, OutputTensor, ParamInfo, PushInputTensor,
@@ -22,29 +19,28 @@ use super::super::{
 pub(crate) enum Onnxruntime {}
 
 impl InferenceRuntime for Onnxruntime {
-    type Session = AssertSend<onnxruntime::session::Session<'static>>;
+    type Session = ort::Session;
     type RunContext<'a> = OnnxruntimeRunContext<'a>;
 
     fn supported_devices() -> crate::Result<SupportedDevices> {
-        let mut cuda_support = false;
-        let mut dml_support = false;
-        for provider in onnxruntime::session::get_available_providers()
-            .map_err(Into::into)
-            .map_err(ErrorRepr::GetSupportedDevices)?
-            .iter()
-        {
-            match provider.as_str() {
-                "CUDAExecutionProvider" => cuda_support = true,
-                "DmlExecutionProvider" => dml_support = true,
-                _ => {}
-            }
-        }
+        // TODO: `InferenceRuntime::init`と`InitInferenceRuntimeError`を作る
+        build_ort_env_once().unwrap();
+
+        (|| {
+            let cpu = CPUExecutionProvider::default().is_available()?;
+            let cuda = CUDAExecutionProvider::default().is_available()?;
+            let dml = DirectMLExecutionProvider::default().is_available()?;
 
-        Ok(SupportedDevices {
-            cpu: true,
-            cuda: cuda_support,
-            dml: dml_support,
-        })
+            ensure!(cpu, "missing `CPUExecutionProvider`");
+
+            Ok(SupportedDevices {
+                cpu: true,
+                cuda,
+                dml,
+            })
+        })()
+        .map_err(ErrorRepr::GetSupportedDevices)
+        .map_err(Into::into)
     }
 
     fn new_session(
@@ -55,48 +51,52 @@ impl InferenceRuntime for Onnxruntime {
         Vec<ParamInfo<InputScalarKind>>,
         Vec<ParamInfo<OutputScalarKind>>,
     )> {
-        let mut builder = ENVIRONMENT
-            .new_session_builder()?
-            .with_optimization_level(GraphOptimizationLevel::Basic)?
-            .with_intra_op_num_threads(options.cpu_num_threads.into())?
-            .with_inter_op_num_threads(options.cpu_num_threads.into())?;
-
-        if options.use_gpu {
-            #[cfg(feature = "directml")]
-            {
-                use onnxruntime::ExecutionMode;
-
-                builder = builder
-                    .with_disable_mem_pattern()?
-                    .with_execution_mode(ExecutionMode::ORT_SEQUENTIAL)?
-                    .with_append_execution_provider_directml(0)?;
-            }
-
-            #[cfg(not(feature = "directml"))]
-            {
-                builder = builder.with_append_execution_provider_cuda(Default::default())?;
-            }
+        // TODO: `InferenceRuntime::init`と`InitInferenceRuntimeError`を作る
+        build_ort_env_once().unwrap();
+
+        let mut builder = ort::Session::builder()?
+            .with_optimization_level(GraphOptimizationLevel::Level1)?
+            .with_intra_threads(options.cpu_num_threads.into())?;
+
+        if options.use_gpu && cfg!(feature = "directml") {
+            builder = builder
+                .with_parallel_execution(false)?
+                .with_memory_pattern(false)?;
+            DirectMLExecutionProvider::default().register(&builder)?;
+        } else if options.use_gpu && cfg!(feature = "cuda") {
+            CUDAExecutionProvider::default().register(&builder)?;
         }
 
         let model = model()?;
-        let sess = AssertSend::from(builder.with_model_from_memory(model)?);
+        let sess = builder.commit_from_memory(&{ model })?;
 
         let input_param_infos = sess
             .inputs
             .iter()
             .map(|info| {
-                let dt = match info.input_type {
-                    TensorElementDataType::Float => Ok(InputScalarKind::Float32),
-                    TensorElementDataType::Uint8 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT8"),
-                    TensorElementDataType::Int8 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT8"),
-                    TensorElementDataType::Uint16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT16"),
-                    TensorElementDataType::Int16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT16"),
-                    TensorElementDataType::Int32 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT32"),
-                    TensorElementDataType::Int64 => Ok(InputScalarKind::Int64),
-                    TensorElementDataType::String => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_STRING"),
-                    TensorElementDataType::Double => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_DOUBLE"),
-                    TensorElementDataType::Uint32 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT32"),
-                    TensorElementDataType::Uint64 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT64"),
+                let ValueType::Tensor { ty, .. } = info.input_type else {
+                    bail!(
+                        "unexpected input value type for `{}`. currently `ONNX_TYPE_TENSOR` and \
+                         `ONNX_TYPE_SPARSETENSOR` is supported",
+                        info.name,
+                    );
+                };
+
+                let dt = match ty {
+                    TensorElementType::Float32 => Ok(InputScalarKind::Float32),
+                    TensorElementType::Uint8 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT8"),
+                    TensorElementType::Int8 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT8"),
+                    TensorElementType::Uint16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT16"),
+                    TensorElementType::Int16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT16"),
+                    TensorElementType::Int32 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT32"),
+                    TensorElementType::Int64 => Ok(InputScalarKind::Int64),
+                    TensorElementType::String => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_STRING"),
+                    TensorElementType::Bfloat16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_BFLOAT16"),
+                    TensorElementType::Float16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_FLOAT16"),
+                    TensorElementType::Float64 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_DOUBLE"),
+                    TensorElementType::Uint32 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT32"),
+                    TensorElementType::Uint64 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT64"),
+                    TensorElementType::Bool => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_BOOL"),
                 }
                 .map_err(|actual| {
                     anyhow!("unsupported input datatype `{actual}` for `{}`", info.name)
@@ -105,7 +105,7 @@ impl InferenceRuntime for Onnxruntime {
                 Ok(ParamInfo {
                     name: info.name.clone().into(),
                     dt,
-                    ndim: Some(info.dimensions.len()),
+                    ndim: info.input_type.tensor_dimensions().map(Vec::len),
                 })
             })
             .collect::<anyhow::Result<_>>()?;
@@ -114,18 +114,29 @@ impl InferenceRuntime for Onnxruntime {
             .outputs
             .iter()
             .map(|info| {
-                let dt = match info.output_type {
-                    TensorElementDataType::Float => Ok(OutputScalarKind::Float32),
-                    TensorElementDataType::Uint8 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT8"),
-                    TensorElementDataType::Int8 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT8"),
-                    TensorElementDataType::Uint16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT16"),
-                    TensorElementDataType::Int16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT16"),
-                    TensorElementDataType::Int32 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT32"),
-                    TensorElementDataType::Int64 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT64"),
-                    TensorElementDataType::String => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_STRING"),
-                    TensorElementDataType::Double => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_DOUBLE"),
-                    TensorElementDataType::Uint32 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT32"),
-                    TensorElementDataType::Uint64 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT64"),
+                let ValueType::Tensor { ty, .. } = info.output_type else {
+                    bail!(
+                        "unexpected output value type for `{}`. currently `ONNX_TYPE_TENSOR` and \
+                         `ONNX_TYPE_SPARSETENSOR` is supported",
+                        info.name,
+                    );
+                };
+
+                let dt = match ty {
+                    TensorElementType::Float32 => Ok(OutputScalarKind::Float32),
+                    TensorElementType::Uint8 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT8"),
+                    TensorElementType::Int8 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT8"),
+                    TensorElementType::Uint16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT16"),
+                    TensorElementType::Int16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT16"),
+                    TensorElementType::Int32 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT32"),
+                    TensorElementType::Int64 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_INT64"),
+                    TensorElementType::String => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_STRING"),
+                    TensorElementType::Bfloat16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_BFLOAT16"),
+                    TensorElementType::Float16 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_FLOAT16"),
+                    TensorElementType::Float64 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_DOUBLE"),
+                    TensorElementType::Uint32 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT32"),
+                    TensorElementType::Uint64 => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_UINT64"),
+                    TensorElementType::Bool => Err("ONNX_TENSOR_ELEMENT_DATA_TYPE_BOOL"),
                 }
                 .map_err(|actual| {
                     anyhow!("unsupported output datatype `{actual}` for `{}`", info.name)
@@ -134,73 +145,69 @@ impl InferenceRuntime for Onnxruntime {
                 Ok(ParamInfo {
                     name: info.name.clone().into(),
                     dt,
-                    ndim: Some(info.dimensions.len()),
+                    ndim: info.output_type.tensor_dimensions().map(|d| d.len()),
                 })
             })
             .collect::<anyhow::Result<_>>()?;
 
-        return Ok((sess, input_param_infos, output_param_infos));
-
-        static ENVIRONMENT: Lazy<Environment> = Lazy::new(|| {
-            Environment::builder()
-                .with_name(env!("CARGO_PKG_NAME"))
-                .with_log_level(LOGGING_LEVEL)
-                .build()
-                .unwrap()
-        });
-
-        const LOGGING_LEVEL: LoggingLevel = if cfg!(debug_assertions) {
-            LoggingLevel::Verbose
-        } else {
-            LoggingLevel::Warning
-        };
+        Ok((sess, input_param_infos, output_param_infos))
     }
 
     fn run(
-        OnnxruntimeRunContext { sess, mut inputs }: OnnxruntimeRunContext<'_>,
+        OnnxruntimeRunContext { sess, inputs }: OnnxruntimeRunContext<'_>,
     ) -> anyhow::Result<Vec<OutputTensor>> {
-        // FIXME: 現状では`f32`のみ対応。実行時にsessionからdatatypeが取れるので、別の型の対応も
-        // おそらく可能ではあるが、それが必要になるよりもortクレートへの引越しが先になると思われる
-        // のでこのままにする。
-
-        if !sess
-            .outputs
-            .iter()
-            .all(|info| matches!(info.output_type, TensorElementDataType::Float))
-        {
-            unimplemented!(
-                "currently only `ONNX_TENSOR_ELEMENT_DATA_TYPE_FLOAT` is supported for output",
-            );
-        }
-
-        let outputs = sess.run::<f32>(inputs.iter_mut().map(|t| &mut **t as &mut _).collect())?;
-
-        Ok(outputs
-            .iter()
-            .map(|o| OutputTensor::Float32((*o).clone().into_owned()))
-            .collect())
+        let outputs = sess.run(&*inputs)?;
+
+        (0..outputs.len())
+            .map(|i| {
+                let output = &outputs[i];
+
+                let ValueType::Tensor { ty, .. } = output.dtype()? else {
+                    bail!(
+                        "unexpected output. currently `ONNX_TYPE_TENSOR` and \
+                         `ONNX_TYPE_SPARSETENSOR` is supported",
+                    );
+                };
+
+                match ty {
+                    TensorElementType::Float32 => {
+                        let output = output.try_extract_tensor::<f32>()?;
+                        Ok(OutputTensor::Float32(output.into_owned()))
+                    }
+                    _ => bail!("unexpected output tensor element data type"),
+                }
+            })
+            .collect()
     }
 }
 
+fn build_ort_env_once() -> ort::Result<()> {
+    static ONCE: once_cell::sync::OnceCell<()> = once_cell::sync::OnceCell::new();
+    ONCE.get_or_try_init(|| ort::init().with_name(env!("CARGO_PKG_NAME")).commit())?;
+    Ok(())
+}
+
 pub(crate) struct OnnxruntimeRunContext<'sess> {
-    sess: &'sess mut AssertSend<onnxruntime::session::Session<'static>>,
-    inputs: Vec<Box<dyn onnxruntime::session::AnyArray>>,
+    sess: &'sess ort::Session,
+    inputs: Vec<ort::SessionInputValue<'static>>,
 }
 
 impl OnnxruntimeRunContext<'_> {
     fn push_input(
         &mut self,
-        input: Array<impl TypeToTensorElementDataType + Debug + 'static, impl Dimension + 'static>,
-    ) {
-        self.inputs
-            .push(Box::new(onnxruntime::session::NdArray::new(input)));
+        input: Array<
+            impl IntoTensorElementType + Debug + Clone + 'static,
+            impl Dimension + 'static,
+        >,
+    ) -> anyhow::Result<()> {
+        let input = ort::Value::from_array(input)?.into();
+        self.inputs.push(input);
+        Ok(())
     }
 }
 
-impl<'sess> From<&'sess mut AssertSend<onnxruntime::session::Session<'static>>>
-    for OnnxruntimeRunContext<'sess>
-{
-    fn from(sess: &'sess mut AssertSend<onnxruntime::session::Session<'static>>) -> Self {
+impl<'sess> From<&'sess mut ort::Session> for OnnxruntimeRunContext<'sess> {
+    fn from(sess: &'sess mut ort::Session) -> Self {
         Self {
             sess,
             inputs: vec![],
@@ -214,41 +221,7 @@ impl PushInputTensor for OnnxruntimeRunContext<'_> {
         [ push_int64 ]   [ i64 ];
         [ push_float32 ] [ f32 ];
     )]
-    fn method(&mut self, tensor: Array<T, impl Dimension + 'static>) {
-        self.push_input(tensor);
-    }
-}
-
-// FIXME: 以下のことをちゃんと確認した後、onnxruntime-rs側で`Session`が`Send`であると宣言する。
-// https://github.com/VOICEVOX/voicevox_core/issues/307#issuecomment-1276184614
-mod assert_send {
-    use std::ops::{Deref, DerefMut};
-
-    pub(crate) struct AssertSend<T>(T);
-
-    impl From<onnxruntime::session::Session<'static>>
-        for AssertSend<onnxruntime::session::Session<'static>>
-    {
-        fn from(session: onnxruntime::session::Session<'static>) -> Self {
-            Self(session)
-        }
+    fn method(&mut self, tensor: Array<T, impl Dimension + 'static>) -> anyhow::Result<()> {
+        self.push_input(tensor)
     }
-
-    impl<T> Deref for AssertSend<T> {
-        type Target = T;
-
-        fn deref(&self) -> &Self::Target {
-            &self.0
-        }
-    }
-
-    impl<T> DerefMut for AssertSend<T> {
-        fn deref_mut(&mut self) -> &mut Self::Target {
-            &mut self.0
-        }
-    }
-
-    // SAFETY: `Session` is probably "send"able.
-    #[allow(unsafe_code)]
-    unsafe impl<T> Send for AssertSend<T> {}
 }
diff --git a/crates/voicevox_core/src/infer/session_set.rs b/crates/voicevox_core/src/infer/session_set.rs
new file mode 100644
index 000000000..cdd179680
--- /dev/null
+++ b/crates/voicevox_core/src/infer/session_set.rs
@@ -0,0 +1,101 @@
+use std::{collections::HashMap, fmt::Display, marker::PhantomData, sync::Arc};
+
+use anyhow::bail;
+use enum_map::{Enum as _, EnumMap};
+use itertools::Itertools as _;
+
+use crate::error::ErrorRepr;
+
+use super::{
+    model_file, InferenceDomain, InferenceInputSignature, InferenceOperation, InferenceRuntime,
+    InferenceSessionOptions, InferenceSignature, ParamInfo,
+};
+
+pub(crate) struct InferenceSessionSet<R: InferenceRuntime, D: InferenceDomain>(
+    EnumMap<D::Operation, Arc<std::sync::Mutex<R::Session>>>,
+);
+
+impl<R: InferenceRuntime, D: InferenceDomain> InferenceSessionSet<R, D> {
+    pub(crate) fn new(
+        model_bytes: &EnumMap<D::Operation, Vec<u8>>,
+        options: &EnumMap<D::Operation, InferenceSessionOptions>,
+    ) -> anyhow::Result<Self> {
+        let mut sessions = model_bytes
+            .iter()
+            .map(|(op, model_bytes)| {
+                let (expected_input_param_infos, expected_output_param_infos) =
+                    <D::Operation as InferenceOperation>::PARAM_INFOS[op];
+
+                let (sess, actual_input_param_infos, actual_output_param_infos) =
+                    R::new_session(|| model_file::decrypt(model_bytes), options[op])?;
+
+                check_param_infos(expected_input_param_infos, &actual_input_param_infos)?;
+                check_param_infos(expected_output_param_infos, &actual_output_param_infos)?;
+
+                Ok((op.into_usize(), std::sync::Mutex::new(sess).into()))
+            })
+            .collect::<anyhow::Result<HashMap<_, _>>>()?;
+
+        return Ok(Self(EnumMap::<D::Operation, _>::from_fn(|k| {
+            sessions.remove(&k.into_usize()).expect("should exist")
+        })));
+
+        fn check_param_infos<D: PartialEq + Display>(
+            expected: &[ParamInfo<D>],
+            actual: &[ParamInfo<D>],
+        ) -> anyhow::Result<()> {
+            if !(expected.len() == actual.len()
+                && itertools::zip_eq(expected, actual)
+                    .all(|(expected, actual)| expected.accepts(actual)))
+            {
+                let expected = display_param_infos(expected);
+                let actual = display_param_infos(actual);
+                bail!("expected {{{expected}}}, got {{{actual}}}")
+            }
+            Ok(())
+        }
+
+        fn display_param_infos(infos: &[ParamInfo<impl Display>]) -> impl Display {
+            infos
+                .iter()
+                .map(|ParamInfo { name, dt, ndim }| {
+                    let brackets = match *ndim {
+                        Some(ndim) => "[]".repeat(ndim),
+                        None => "[]...".to_owned(),
+                    };
+                    format!("{name}: {dt}{brackets}")
+                })
+                .join(", ")
+        }
+    }
+}
+
+impl<R: InferenceRuntime, D: InferenceDomain> InferenceSessionSet<R, D> {
+    pub(crate) fn get<I>(&self) -> InferenceSessionCell<R, I>
+    where
+        I: InferenceInputSignature,
+        I::Signature: InferenceSignature<Domain = D>,
+    {
+        InferenceSessionCell {
+            inner: self.0[I::Signature::OPERATION].clone(),
+            marker: PhantomData,
+        }
+    }
+}
+
+pub(crate) struct InferenceSessionCell<R: InferenceRuntime, I> {
+    inner: Arc<std::sync::Mutex<R::Session>>,
+    marker: PhantomData<fn(I)>,
+}
+
+impl<R: InferenceRuntime, I: InferenceInputSignature> InferenceSessionCell<R, I> {
+    pub(crate) fn run(
+        self,
+        input: I,
+    ) -> crate::Result<<I::Signature as InferenceSignature>::Output> {
+        let inner = &mut self.inner.lock().unwrap();
+        (|| R::run(input.make_run_context::<R>(inner)?)?.try_into())()
+            .map_err(ErrorRepr::InferenceFailed)
+            .map_err(Into::into)
+    }
+}
diff --git a/crates/voicevox_core/src/infer/status.rs b/crates/voicevox_core/src/infer/status.rs
deleted file mode 100644
index 12367dda2..000000000
--- a/crates/voicevox_core/src/infer/status.rs
+++ /dev/null
@@ -1,422 +0,0 @@
-use std::{
-    collections::{BTreeMap, HashMap},
-    fmt::Display,
-    marker::PhantomData,
-    sync::Arc,
-};
-
-use anyhow::bail;
-use educe::Educe;
-use enum_map::{Enum as _, EnumMap};
-use itertools::{iproduct, Itertools as _};
-
-use crate::{
-    error::{ErrorRepr, LoadModelError, LoadModelErrorKind, LoadModelResult},
-    infer::{InferenceOperation, ParamInfo},
-    manifest::ModelInnerId,
-    metas::{SpeakerMeta, StyleId, StyleMeta, VoiceModelMeta},
-    voice_model::{VoiceModelHeader, VoiceModelId},
-    Result,
-};
-
-use super::{
-    model_file, InferenceDomain, InferenceInputSignature, InferenceRuntime,
-    InferenceSessionOptions, InferenceSignature,
-};
-
-pub(crate) struct Status<R: InferenceRuntime, D: InferenceDomain> {
-    loaded_models: std::sync::Mutex<LoadedModels<R, D>>,
-    session_options: EnumMap<D::Operation, InferenceSessionOptions>,
-}
-
-impl<R: InferenceRuntime, D: InferenceDomain> Status<R, D> {
-    pub fn new(session_options: EnumMap<D::Operation, InferenceSessionOptions>) -> Self {
-        Self {
-            loaded_models: Default::default(),
-            session_options,
-        }
-    }
-
-    pub fn insert_model(
-        &self,
-        model_header: &VoiceModelHeader,
-        model_bytes: &EnumMap<D::Operation, Vec<u8>>,
-    ) -> Result<()> {
-        self.loaded_models
-            .lock()
-            .unwrap()
-            .ensure_acceptable(model_header)?;
-
-        let session_set =
-            SessionSet::new(model_bytes, &self.session_options).map_err(|source| {
-                LoadModelError {
-                    path: model_header.path.clone(),
-                    context: LoadModelErrorKind::InvalidModelData,
-                    source: Some(source),
-                }
-            })?;
-
-        self.loaded_models
-            .lock()
-            .unwrap()
-            .insert(model_header, session_set)?;
-        Ok(())
-    }
-
-    pub fn unload_model(&self, voice_model_id: &VoiceModelId) -> Result<()> {
-        self.loaded_models.lock().unwrap().remove(voice_model_id)
-    }
-
-    pub fn metas(&self) -> VoiceModelMeta {
-        self.loaded_models.lock().unwrap().metas()
-    }
-
-    pub(crate) fn ids_for(&self, style_id: StyleId) -> Result<(VoiceModelId, ModelInnerId)> {
-        self.loaded_models.lock().unwrap().ids_for(style_id)
-    }
-
-    pub fn is_loaded_model(&self, voice_model_id: &VoiceModelId) -> bool {
-        self.loaded_models
-            .lock()
-            .unwrap()
-            .contains_voice_model(voice_model_id)
-    }
-
-    pub fn is_loaded_model_by_style_id(&self, style_id: StyleId) -> bool {
-        self.loaded_models.lock().unwrap().contains_style(style_id)
-    }
-
-    pub fn validate_speaker_id(&self, style_id: StyleId) -> bool {
-        self.is_loaded_model_by_style_id(style_id)
-    }
-
-    /// 推論を実行する。
-    ///
-    /// # Performance
-    ///
-    /// CPU/GPU-boundな操作であるため、非同期ランタイム上では直接実行されるべきではない。
-    ///
-    /// # Panics
-    ///
-    /// `self`が`model_id`を含んでいないとき、パニックする。
-    pub(crate) fn run_session<I>(
-        &self,
-        model_id: &VoiceModelId,
-        input: I,
-    ) -> Result<<I::Signature as InferenceSignature>::Output>
-    where
-        I: InferenceInputSignature,
-        I::Signature: InferenceSignature<Domain = D>,
-    {
-        let sess = self.loaded_models.lock().unwrap().get(model_id);
-        sess.run(input)
-    }
-}
-
-/// 読み込んだモデルの`Session`とそのメタ情報を保有し、追加/削除/取得の操作を提供する。
-///
-/// この構造体のメソッドは、すべて一瞬で完了すべきである。
-#[derive(Educe)]
-#[educe(Default(bound = "R: InferenceRuntime, D: InferenceDomain"))]
-struct LoadedModels<R: InferenceRuntime, D: InferenceDomain>(
-    BTreeMap<VoiceModelId, LoadedModel<R, D>>,
-);
-
-struct LoadedModel<R: InferenceRuntime, D: InferenceDomain> {
-    model_inner_ids: BTreeMap<StyleId, ModelInnerId>,
-    metas: VoiceModelMeta,
-    session_set: SessionSet<R, D>,
-}
-
-impl<R: InferenceRuntime, D: InferenceDomain> LoadedModels<R, D> {
-    fn metas(&self) -> VoiceModelMeta {
-        self.0
-            .values()
-            .flat_map(|LoadedModel { metas, .. }| metas)
-            .cloned()
-            .collect()
-    }
-
-    fn ids_for(&self, style_id: StyleId) -> Result<(VoiceModelId, ModelInnerId)> {
-        let (
-            model_id,
-            LoadedModel {
-                model_inner_ids, ..
-            },
-        ) = self
-            .0
-            .iter()
-            .find(|(_, LoadedModel { metas, .. })| {
-                metas
-                    .iter()
-                    .flat_map(SpeakerMeta::styles)
-                    .any(|style| *style.id() == style_id)
-            })
-            .ok_or(ErrorRepr::StyleNotFound { style_id })?;
-
-        let model_inner_id = *model_inner_ids
-            .get(&style_id)
-            .expect("`model_inner_ids` should contains all of the style IDs in the model");
-
-        Ok((model_id.clone(), model_inner_id))
-    }
-
-    /// # Panics
-    ///
-    /// `self`が`model_id`を含んでいないとき、パニックする。
-    fn get<I>(&self, model_id: &VoiceModelId) -> SessionCell<R, I>
-    where
-        I: InferenceInputSignature,
-        I::Signature: InferenceSignature<Domain = D>,
-    {
-        self.0[model_id].session_set.get()
-    }
-
-    fn contains_voice_model(&self, model_id: &VoiceModelId) -> bool {
-        self.0.contains_key(model_id)
-    }
-
-    fn contains_style(&self, style_id: StyleId) -> bool {
-        self.styles().any(|style| *style.id() == style_id)
-    }
-
-    /// 音声モデルを受け入れ可能かをチェックする。
-    ///
-    /// # Errors
-    ///
-    /// 音声モデルIDかスタイルIDが`model_header`と重複するとき、エラーを返す。
-    fn ensure_acceptable(&self, model_header: &VoiceModelHeader) -> LoadModelResult<()> {
-        let loaded = self.styles();
-        let external = model_header
-            .metas
-            .iter()
-            .flat_map(|speaker| speaker.styles());
-
-        let error = |context| LoadModelError {
-            path: model_header.path.clone(),
-            context,
-            source: None,
-        };
-
-        if self.0.contains_key(&model_header.id) {
-            return Err(error(LoadModelErrorKind::ModelAlreadyLoaded {
-                id: model_header.id.clone(),
-            }));
-        }
-        if let Some((style, _)) =
-            iproduct!(loaded, external).find(|(loaded, external)| loaded.id() == external.id())
-        {
-            return Err(error(LoadModelErrorKind::StyleAlreadyLoaded {
-                id: *style.id(),
-            }));
-        }
-        Ok(())
-    }
-
-    fn insert(
-        &mut self,
-        model_header: &VoiceModelHeader,
-        session_set: SessionSet<R, D>,
-    ) -> Result<()> {
-        self.ensure_acceptable(model_header)?;
-
-        let prev = self.0.insert(
-            model_header.id.clone(),
-            LoadedModel {
-                model_inner_ids: model_header.model_inner_ids(),
-                metas: model_header.metas.clone(),
-                session_set,
-            },
-        );
-        assert!(prev.is_none());
-        Ok(())
-    }
-
-    fn remove(&mut self, model_id: &VoiceModelId) -> Result<()> {
-        if self.0.remove(model_id).is_none() {
-            return Err(ErrorRepr::ModelNotFound {
-                model_id: model_id.clone(),
-            }
-            .into());
-        }
-        Ok(())
-    }
-
-    fn styles(&self) -> impl Iterator<Item = &StyleMeta> {
-        self.0
-            .values()
-            .flat_map(|LoadedModel { metas, .. }| metas)
-            .flat_map(|speaker| speaker.styles())
-    }
-}
-
-struct SessionSet<R: InferenceRuntime, D: InferenceDomain>(
-    EnumMap<D::Operation, Arc<std::sync::Mutex<R::Session>>>,
-);
-
-impl<R: InferenceRuntime, D: InferenceDomain> SessionSet<R, D> {
-    fn new(
-        model_bytes: &EnumMap<D::Operation, Vec<u8>>,
-        options: &EnumMap<D::Operation, InferenceSessionOptions>,
-    ) -> anyhow::Result<Self> {
-        let mut sessions = model_bytes
-            .iter()
-            .map(|(op, model_bytes)| {
-                let (expected_input_param_infos, expected_output_param_infos) =
-                    <D::Operation as InferenceOperation>::PARAM_INFOS[op];
-
-                let (sess, actual_input_param_infos, actual_output_param_infos) =
-                    R::new_session(|| model_file::decrypt(model_bytes), options[op])?;
-
-                check_param_infos(expected_input_param_infos, &actual_input_param_infos)?;
-                check_param_infos(expected_output_param_infos, &actual_output_param_infos)?;
-
-                Ok((op.into_usize(), std::sync::Mutex::new(sess).into()))
-            })
-            .collect::<anyhow::Result<HashMap<_, _>>>()?;
-
-        return Ok(Self(EnumMap::<D::Operation, _>::from_fn(|k| {
-            sessions.remove(&k.into_usize()).expect("should exist")
-        })));
-
-        fn check_param_infos<D: PartialEq + Display>(
-            expected: &[ParamInfo<D>],
-            actual: &[ParamInfo<D>],
-        ) -> anyhow::Result<()> {
-            if !(expected.len() == actual.len()
-                && itertools::zip_eq(expected, actual)
-                    .all(|(expected, actual)| expected.accepts(actual)))
-            {
-                let expected = display_param_infos(expected);
-                let actual = display_param_infos(actual);
-                bail!("expected {{{expected}}}, got {{{actual}}}")
-            }
-            Ok(())
-        }
-
-        fn display_param_infos(infos: &[ParamInfo<impl Display>]) -> impl Display {
-            infos
-                .iter()
-                .map(|ParamInfo { name, dt, ndim }| {
-                    let brackets = match *ndim {
-                        Some(ndim) => "[]".repeat(ndim),
-                        None => "[]...".to_owned(),
-                    };
-                    format!("{name}: {dt}{brackets}")
-                })
-                .join(", ")
-        }
-    }
-}
-
-impl<R: InferenceRuntime, D: InferenceDomain> SessionSet<R, D> {
-    fn get<I>(&self) -> SessionCell<R, I>
-    where
-        I: InferenceInputSignature,
-        I::Signature: InferenceSignature<Domain = D>,
-    {
-        SessionCell {
-            inner: self.0[I::Signature::OPERATION].clone(),
-            marker: PhantomData,
-        }
-    }
-}
-
-struct SessionCell<R: InferenceRuntime, I> {
-    inner: Arc<std::sync::Mutex<R::Session>>,
-    marker: PhantomData<fn(I)>,
-}
-
-impl<R: InferenceRuntime, I: InferenceInputSignature> SessionCell<R, I> {
-    fn run(self, input: I) -> crate::Result<<I::Signature as InferenceSignature>::Output> {
-        let inner = &mut self.inner.lock().unwrap();
-        let ctx = input.make_run_context::<R>(inner);
-        R::run(ctx)
-            .and_then(TryInto::try_into)
-            .map_err(|e| ErrorRepr::InferenceFailed(e).into())
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use enum_map::enum_map;
-    use pretty_assertions::assert_eq;
-    use rstest::rstest;
-
-    use crate::{
-        infer::domain::{InferenceDomainImpl, InferenceOperationImpl},
-        macros::tests::assert_debug_fmt_eq,
-        synthesizer::InferenceRuntimeImpl,
-        test_util::open_default_vvm_file,
-    };
-
-    use super::{super::InferenceSessionOptions, Status};
-
-    #[rstest]
-    #[case(true, 0)]
-    #[case(true, 1)]
-    #[case(true, 8)]
-    #[case(false, 2)]
-    #[case(false, 4)]
-    #[case(false, 8)]
-    #[case(false, 0)]
-    fn status_new_works(#[case] use_gpu: bool, #[case] cpu_num_threads: u16) {
-        let light_session_options = InferenceSessionOptions::new(cpu_num_threads, false);
-        let heavy_session_options = InferenceSessionOptions::new(cpu_num_threads, use_gpu);
-        let session_options = enum_map! {
-            InferenceOperationImpl::PredictDuration
-            | InferenceOperationImpl::PredictIntonation => light_session_options,
-            InferenceOperationImpl::Decode => heavy_session_options,
-        };
-        let status = Status::<InferenceRuntimeImpl, InferenceDomainImpl>::new(session_options);
-
-        assert_eq!(
-            light_session_options,
-            status.session_options[InferenceOperationImpl::PredictDuration],
-        );
-        assert_eq!(
-            light_session_options,
-            status.session_options[InferenceOperationImpl::PredictIntonation],
-        );
-        assert_eq!(
-            heavy_session_options,
-            status.session_options[InferenceOperationImpl::Decode],
-        );
-
-        assert!(status.loaded_models.lock().unwrap().0.is_empty());
-    }
-
-    #[rstest]
-    #[tokio::test]
-    async fn status_load_model_works() {
-        let status = Status::<InferenceRuntimeImpl, InferenceDomainImpl>::new(
-            enum_map!(_ => InferenceSessionOptions::new(0, false)),
-        );
-        let model = &open_default_vvm_file().await;
-        let model_bytes = &model.read_inference_models().await.unwrap();
-        let result = status.insert_model(model.header(), model_bytes);
-        assert_debug_fmt_eq!(Ok(()), result);
-        assert_eq!(1, status.loaded_models.lock().unwrap().0.len());
-    }
-
-    #[rstest]
-    #[tokio::test]
-    async fn status_is_model_loaded_works() {
-        let status = Status::<InferenceRuntimeImpl, InferenceDomainImpl>::new(
-            enum_map!(_ => InferenceSessionOptions::new(0, false)),
-        );
-        let vvm = open_default_vvm_file().await;
-        let model_header = vvm.header();
-        let model_bytes = &vvm.read_inference_models().await.unwrap();
-        assert!(
-            !status.is_loaded_model(&model_header.id),
-            "model should  not be loaded"
-        );
-        let result = status.insert_model(model_header, model_bytes);
-        assert_debug_fmt_eq!(Ok(()), result);
-        assert!(
-            status.is_loaded_model(&model_header.id),
-            "model should be loaded",
-        );
-    }
-}
diff --git a/crates/voicevox_core/src/lib.rs b/crates/voicevox_core/src/lib.rs
index ea74c9f7c..0f34c5962 100644
--- a/crates/voicevox_core/src/lib.rs
+++ b/crates/voicevox_core/src/lib.rs
@@ -8,10 +8,11 @@ mod infer;
 mod macros;
 mod manifest;
 mod metas;
-mod numerics;
 mod result;
+mod status;
 mod synthesizer;
 mod task;
+mod text_analyzer;
 mod user_dict;
 mod version;
 mod voice_model;
@@ -23,12 +24,18 @@ pub mod tokio;
 #[cfg(test)]
 mod test_util;
 
+// https://crates.io/crates/rstest_reuse#use-rstest_resuse-at-the-top-of-your-crate
+#[allow(clippy::single_component_path_imports)]
+#[cfg(test)]
+use rstest_reuse;
+
 pub use self::{
     devices::SupportedDevices,
     engine::{AccentPhraseModel, AudioQueryModel, FullcontextExtractor},
     error::{Error, ErrorKind},
     metas::{
-        RawStyleId, RawStyleVersion, SpeakerMeta, StyleId, StyleMeta, StyleVersion, VoiceModelMeta,
+        RawStyleId, RawStyleVersion, SpeakerMeta, StyleId, StyleMeta, StyleType, StyleVersion,
+        VoiceModelMeta,
     },
     result::Result,
     synthesizer::{AccelerationMode, InitializeOptions, SynthesisOptions, TtsOptions},
diff --git a/crates/voicevox_core/src/manifest.rs b/crates/voicevox_core/src/manifest.rs
index 650e151d5..3b17ae3f1 100644
--- a/crates/voicevox_core/src/manifest.rs
+++ b/crates/voicevox_core/src/manifest.rs
@@ -1,8 +1,10 @@
-use std::{collections::BTreeMap, fmt::Display};
+use std::{collections::BTreeMap, fmt::Display, sync::Arc};
 
 use derive_getters::Getters;
+use derive_more::Deref;
 use derive_new::new;
 use serde::{Deserialize, Serialize};
+use serde_with::{serde_as, DisplayFromStr};
 
 use crate::StyleId;
 
@@ -41,9 +43,27 @@ pub struct Manifest {
     #[allow(dead_code)]
     manifest_version: ManifestVersion,
     metas_filename: String,
-    decode_filename: String,
-    predict_duration_filename: String,
-    predict_intonation_filename: String,
+    #[serde(flatten)]
+    domains: ManifestDomains,
+}
+
+#[derive(Deserialize, Clone)]
+pub(crate) struct ManifestDomains {
+    pub(crate) talk: Option<TalkManifest>,
+}
+
+#[derive(Deserialize, Clone)]
+pub(crate) struct TalkManifest {
+    pub(crate) predict_duration_filename: String,
+    pub(crate) predict_intonation_filename: String,
+    pub(crate) decode_filename: String,
     #[serde(default)]
-    style_id_to_model_inner_id: BTreeMap<StyleId, ModelInnerId>,
+    pub(crate) style_id_to_model_inner_id: StyleIdToModelInnerId,
 }
+
+#[serde_as]
+#[derive(Default, Clone, Deref, Deserialize)]
+#[deref(forward)]
+pub(crate) struct StyleIdToModelInnerId(
+    #[serde_as(as = "Arc<BTreeMap<DisplayFromStr, _>>")] Arc<BTreeMap<StyleId, ModelInnerId>>,
+);
diff --git a/crates/voicevox_core/src/metas.rs b/crates/voicevox_core/src/metas.rs
index 77cb3a9fc..b9f274c48 100644
--- a/crates/voicevox_core/src/metas.rs
+++ b/crates/voicevox_core/src/metas.rs
@@ -1,8 +1,42 @@
-use std::fmt::Display;
+use std::fmt::{Debug, Display};
 
 use derive_getters::Getters;
 use derive_new::new;
+use indexmap::IndexMap;
+use itertools::Itertools as _;
 use serde::{Deserialize, Serialize};
+use tracing::warn;
+
+/// [`speaker_uuid`]をキーとして複数の[`SpeakerMeta`]をマージする。
+///
+/// マージする際話者は[`SpeakerMeta::order`]、スタイルは[`StyleMeta::order`]をもとに安定ソートされる。
+/// `order`が無い話者とスタイルは、そうでないものよりも後ろに置かれる。
+///
+/// [`speaker_uuid`]: SpeakerMeta::speaker_uuid
+pub fn merge<'a>(metas: impl IntoIterator<Item = &'a SpeakerMeta>) -> Vec<SpeakerMeta> {
+    return metas
+        .into_iter()
+        .fold(IndexMap::<_, SpeakerMeta>::new(), |mut acc, speaker| {
+            acc.entry(&speaker.speaker_uuid)
+                .and_modify(|acc| acc.styles.extend(speaker.styles.clone()))
+                .or_insert_with(|| speaker.clone());
+            acc
+        })
+        .into_values()
+        .update(|speaker| {
+            speaker
+                .styles
+                .sort_by_key(|&StyleMeta { order, .. }| key(order));
+        })
+        .sorted_by_key(|&SpeakerMeta { order, .. }| key(order))
+        .collect();
+
+    fn key(order: Option<u32>) -> impl Ord {
+        order
+            .map(Into::into)
+            .unwrap_or_else(|| u64::from(u32::MAX) + 1)
+    }
+}
 
 /// [`StyleId`]の実体。
 ///
@@ -15,7 +49,20 @@ pub type RawStyleId = u32;
 ///
 /// [**話者**(_speaker_)]: SpeakerMeta
 /// [**スタイル**(_style_)]: StyleMeta
-#[derive(PartialEq, Eq, Clone, Copy, Ord, PartialOrd, Deserialize, Serialize, new, Debug)]
+#[derive(
+    PartialEq,
+    Eq,
+    Clone,
+    Copy,
+    Ord,
+    Hash,
+    PartialOrd,
+    derive_more::FromStr,
+    Deserialize,
+    Serialize,
+    new,
+    Debug,
+)]
 pub struct StyleId(RawStyleId);
 
 impl StyleId {
@@ -65,6 +112,52 @@ pub struct SpeakerMeta {
     version: StyleVersion,
     /// 話者のUUID。
     speaker_uuid: String,
+    /// 話者の順番。
+    ///
+    /// `SpeakerMeta`の列は、この値に対して昇順に並んでいるべきである。
+    order: Option<u32>,
+}
+
+impl SpeakerMeta {
+    /// # Panics
+    ///
+    /// `speaker_uuid`が異なるときパニックする。
+    pub(crate) fn warn_diff_except_styles(&self, other: &Self) {
+        let Self {
+            name: name1,
+            styles: _,
+            version: version1,
+            speaker_uuid: speaker_uuid1,
+            order: order1,
+        } = self;
+
+        let Self {
+            name: name2,
+            styles: _,
+            version: version2,
+            speaker_uuid: speaker_uuid2,
+            order: order2,
+        } = other;
+
+        if speaker_uuid1 != speaker_uuid2 {
+            panic!("must be equal: {speaker_uuid1} != {speaker_uuid2:?}");
+        }
+
+        warn_diff(speaker_uuid1, "name", name1, name2);
+        warn_diff(speaker_uuid1, "version", version1, version2);
+        warn_diff(speaker_uuid1, "order", order1, order2);
+
+        fn warn_diff<T: PartialEq + Debug>(
+            speaker_uuid: &str,
+            field_name: &str,
+            left: &T,
+            right: &T,
+        ) {
+            if left != right {
+                warn!("`{speaker_uuid}`: different `{field_name}` ({left:?} != {right:?})");
+            }
+        }
+    }
 }
 
 /// **スタイル**(_style_)のメタ情報。
@@ -74,4 +167,156 @@ pub struct StyleMeta {
     id: StyleId,
     /// スタイル名。
     name: String,
+    /// スタイルに対応するモデルの種類。
+    #[serde(default)]
+    r#type: StyleType,
+    /// スタイルの順番。
+    ///
+    /// [`SpeakerMeta::styles`]は、この値に対して昇順に並んでいるべきである。
+    order: Option<u32>,
+}
+
+/// **スタイル**(_style_)に対応するモデルの種類。
+#[derive(
+    Default,
+    Clone,
+    Copy,
+    PartialEq,
+    Eq,
+    PartialOrd,
+    Ord,
+    Hash,
+    Debug,
+    strum::Display,
+    Deserialize,
+    Serialize,
+)]
+#[strum(serialize_all = "snake_case")]
+#[serde(rename_all = "snake_case")]
+pub enum StyleType {
+    /// 音声合成クエリの作成と音声合成が可能。
+    #[default]
+    Talk,
+
+    /// 歌唱音声合成用のクエリの作成が可能。
+    SingingTeacher,
+
+    /// 歌唱音声合成が可能。
+    FrameDecode,
+
+    /// 歌唱音声合成用のクエリの作成と歌唱音声合成が可能。
+    Sing,
+}
+
+#[cfg(test)]
+mod tests {
+    use once_cell::sync::Lazy;
+    use serde_json::json;
+
+    #[test]
+    fn merge_works() -> anyhow::Result<()> {
+        static INPUT: Lazy<serde_json::Value> = Lazy::new(|| {
+            json!([
+                {
+                    "name": "B",
+                    "styles": [
+                        {
+                            "id": 3,
+                            "name": "B_1",
+                            "type": "talk",
+                            "order": 0
+                        }
+                    ],
+                    "version": "0.0.0",
+                    "speaker_uuid": "f34ab151-c0f5-4e0a-9ad2-51ce30dba24d",
+                    "order": 1
+                },
+                {
+                    "name": "A",
+                    "styles": [
+                        {
+                            "id": 2,
+                            "name": "A_3",
+                            "type": "talk",
+                            "order": 2
+                        }
+                    ],
+                    "version": "0.0.0",
+                    "speaker_uuid": "d6fd707c-a451-48e9-8f00-fe9ee3bf6264",
+                    "order": 0
+                },
+                {
+                    "name": "A",
+                    "styles": [
+                        {
+                            "id": 1,
+                            "name": "A_1",
+                            "type": "talk",
+                            "order": 0
+                        },
+                        {
+                            "id": 0,
+                            "name": "A_2",
+                            "type": "talk",
+                            "order": 1
+                        }
+                    ],
+                    "version": "0.0.0",
+                    "speaker_uuid": "d6fd707c-a451-48e9-8f00-fe9ee3bf6264",
+                    "order": 0
+                }
+            ])
+        });
+
+        static EXPECTED: Lazy<serde_json::Value> = Lazy::new(|| {
+            json!([
+                {
+                    "name": "A",
+                    "styles": [
+                        {
+                            "id": 1,
+                            "name": "A_1",
+                            "type": "talk",
+                            "order": 0
+                        },
+                        {
+                            "id": 0,
+                            "name": "A_2",
+                            "type": "talk",
+                            "order": 1
+                        },
+                        {
+                            "id": 2,
+                            "name": "A_3",
+                            "type": "talk",
+                            "order": 2
+                        }
+                    ],
+                    "version": "0.0.0",
+                    "speaker_uuid": "d6fd707c-a451-48e9-8f00-fe9ee3bf6264",
+                    "order": 0
+                },
+                {
+                    "name": "B",
+                    "styles": [
+                        {
+                            "id": 3,
+                            "name": "B_1",
+                            "type": "talk",
+                            "order": 0
+                        }
+                    ],
+                    "version": "0.0.0",
+                    "speaker_uuid": "f34ab151-c0f5-4e0a-9ad2-51ce30dba24d",
+                    "order": 1
+                }
+            ])
+        });
+
+        let input = &serde_json::from_value::<Vec<_>>(INPUT.clone())?;
+        let actual = serde_json::to_value(super::merge(input))?;
+
+        pretty_assertions::assert_eq!(*EXPECTED, actual);
+        Ok(())
+    }
 }
diff --git a/crates/voicevox_core/src/numerics.rs b/crates/voicevox_core/src/numerics.rs
deleted file mode 100644
index b01c4d6a5..000000000
--- a/crates/voicevox_core/src/numerics.rs
+++ /dev/null
@@ -1,17 +0,0 @@
-use easy_ext::ext;
-
-#[ext(F32Ext)]
-pub(crate) impl f32 {
-    /// 偶数丸めを行う。
-    ///
-    /// [`round_ties_even` feature]で追加される予定の`f32::round_ties_even`の代用。
-    ///
-    /// [`round_ties_even` feature]: https://github.com/rust-lang/rust/pull/95317
-    fn round_ties_even_(self) -> f32 {
-        let mut rounded = self.round();
-        if (self - rounded).abs() == 0.5 {
-            rounded = 2. * (self / 2.).round();
-        }
-        rounded
-    }
-}
diff --git a/crates/voicevox_core/src/status.rs b/crates/voicevox_core/src/status.rs
new file mode 100644
index 000000000..a47de689b
--- /dev/null
+++ b/crates/voicevox_core/src/status.rs
@@ -0,0 +1,428 @@
+use std::any;
+
+use duplicate::{duplicate, duplicate_item};
+use educe::Educe;
+use enum_map::EnumMap;
+use indexmap::IndexMap;
+use itertools::iproduct;
+
+use crate::{
+    error::{ErrorRepr, LoadModelError, LoadModelErrorKind, LoadModelResult},
+    infer::{
+        domains::{InferenceDomainMap, TalkDomain, TalkOperation},
+        session_set::{InferenceSessionCell, InferenceSessionSet},
+        InferenceDomain, InferenceInputSignature, InferenceRuntime, InferenceSessionOptions,
+        InferenceSignature,
+    },
+    manifest::{ModelInnerId, StyleIdToModelInnerId},
+    metas::{self, SpeakerMeta, StyleId, StyleMeta, VoiceModelMeta},
+    voice_model::{ModelBytesWithInnerIdsByDomain, VoiceModelHeader, VoiceModelId},
+    Result,
+};
+
+pub(crate) struct Status<R: InferenceRuntime> {
+    loaded_models: std::sync::Mutex<LoadedModels<R>>,
+    session_options: InferenceDomainMap<SessionOptionsByDomain>,
+}
+
+impl<R: InferenceRuntime> Status<R> {
+    pub(crate) fn new(session_options: InferenceDomainMap<SessionOptionsByDomain>) -> Self {
+        Self {
+            loaded_models: Default::default(),
+            session_options,
+        }
+    }
+
+    pub(crate) fn insert_model(
+        &self,
+        model_header: &VoiceModelHeader,
+        model_contents: &InferenceDomainMap<ModelBytesWithInnerIdsByDomain>,
+    ) -> Result<()> {
+        self.loaded_models
+            .lock()
+            .unwrap()
+            .ensure_acceptable(model_header)?;
+
+        let session_sets_with_inner_ids = model_contents
+            .create_session_sets(&self.session_options)
+            .map_err(|source| LoadModelError {
+                path: model_header.path.clone(),
+                context: LoadModelErrorKind::InvalidModelData,
+                source: Some(source),
+            })?;
+
+        self.loaded_models
+            .lock()
+            .unwrap()
+            .insert(model_header, session_sets_with_inner_ids)?;
+        Ok(())
+    }
+
+    pub(crate) fn unload_model(&self, voice_model_id: &VoiceModelId) -> Result<()> {
+        self.loaded_models.lock().unwrap().remove(voice_model_id)
+    }
+
+    pub(crate) fn metas(&self) -> VoiceModelMeta {
+        self.loaded_models.lock().unwrap().metas()
+    }
+
+    /// あるスタイルに対応する`VoiceModelId`と`ModelInnerId`の組を返す。
+    ///
+    /// `StyleId` → `ModelInnerId`のマッピングが存在しない場合は、`ModelInnerId`としては
+    /// `style_id`と同じ値を返す。
+    pub(crate) fn ids_for<D: InferenceDomainExt>(
+        &self,
+        style_id: StyleId,
+    ) -> Result<(VoiceModelId, ModelInnerId)> {
+        self.loaded_models.lock().unwrap().ids_for::<D>(style_id)
+    }
+
+    pub(crate) fn is_loaded_model(&self, voice_model_id: &VoiceModelId) -> bool {
+        self.loaded_models
+            .lock()
+            .unwrap()
+            .contains_voice_model(voice_model_id)
+    }
+
+    // FIXME: この関数はcompatible_engineとテストでのみ使われるが、テストのために`StyleType`を
+    // 引数に含めるようにする
+    pub(crate) fn is_loaded_model_by_style_id(&self, style_id: StyleId) -> bool {
+        self.loaded_models.lock().unwrap().contains_style(style_id)
+    }
+
+    /// 推論を実行する。
+    ///
+    /// # Performance
+    ///
+    /// CPU/GPU-boundな操作であるため、非同期ランタイム上では直接実行されるべきではない。
+    ///
+    /// # Panics
+    ///
+    /// `self`が`model_id`を含んでいないとき、パニックする。
+    pub(crate) fn run_session<I>(
+        &self,
+        model_id: &VoiceModelId,
+        input: I,
+    ) -> Result<<I::Signature as InferenceSignature>::Output>
+    where
+        I: InferenceInputSignature,
+        <I::Signature as InferenceSignature>::Domain: InferenceDomainExt,
+    {
+        let sess = self.loaded_models.lock().unwrap().get(model_id);
+        sess.run(input)
+    }
+}
+
+/// 読み込んだモデルの`Session`とそのメタ情報を保有し、追加/削除/取得の操作を提供する。
+///
+/// この構造体のメソッドは、すべて一瞬で完了すべきである。
+#[derive(Educe)]
+#[educe(Default(bound = "R: InferenceRuntime"))]
+struct LoadedModels<R: InferenceRuntime>(IndexMap<VoiceModelId, LoadedModel<R>>);
+
+struct LoadedModel<R: InferenceRuntime> {
+    metas: VoiceModelMeta,
+    session_sets_with_inner_ids: InferenceDomainMap<SessionSetsWithInnerIdsByDomain<R>>,
+}
+
+impl<R: InferenceRuntime> LoadedModels<R> {
+    fn metas(&self) -> VoiceModelMeta {
+        metas::merge(self.0.values().flat_map(|LoadedModel { metas, .. }| metas))
+    }
+
+    fn ids_for<D: InferenceDomainExt>(
+        &self,
+        style_id: StyleId,
+    ) -> Result<(VoiceModelId, ModelInnerId)> {
+        let (
+            model_id,
+            LoadedModel {
+                session_sets_with_inner_ids,
+                ..
+            },
+        ) = self
+            .0
+            .iter()
+            .find(|(_, LoadedModel { metas, .. })| {
+                metas.iter().flat_map(SpeakerMeta::styles).any(|style| {
+                    *style.id() == style_id && D::style_types().contains(style.r#type())
+                })
+            })
+            .ok_or(ErrorRepr::StyleNotFound {
+                style_id,
+                style_types: D::style_types(),
+            })?;
+
+        let model_inner_id = session_sets_with_inner_ids
+            .get::<D>()
+            .as_ref()
+            .and_then(|(model_inner_ids, _)| model_inner_ids.get(&style_id).copied())
+            .unwrap_or_else(|| ModelInnerId::new(style_id.raw_id()));
+
+        Ok((model_id.clone(), model_inner_id))
+    }
+
+    /// # Panics
+    ///
+    /// 次の場合にパニックする。
+    ///
+    /// - `self`が`model_id`を含んでいないとき
+    /// - 対応する`InferenceDomain`が欠けているとき
+    fn get<I>(&self, model_id: &VoiceModelId) -> InferenceSessionCell<R, I>
+    where
+        I: InferenceInputSignature,
+        <I::Signature as InferenceSignature>::Domain: InferenceDomainExt,
+    {
+        let (_, session_set) = self.0[model_id]
+            .session_sets_with_inner_ids
+            .get::<<I::Signature as InferenceSignature>::Domain>()
+            .as_ref()
+            .unwrap_or_else(|| {
+                let type_name = any::type_name::<<I::Signature as InferenceSignature>::Domain>()
+                    .split("::")
+                    .last()
+                    .unwrap();
+                panic!(
+                    "missing session set for `{type_name}` (should be checked in \
+                     `VoiceModelHeader::new` and `ids_for`)",
+                );
+            });
+        session_set.get()
+    }
+
+    fn contains_voice_model(&self, model_id: &VoiceModelId) -> bool {
+        self.0.contains_key(model_id)
+    }
+
+    fn contains_style(&self, style_id: StyleId) -> bool {
+        self.styles().any(|style| *style.id() == style_id)
+    }
+
+    /// 音声モデルを受け入れ可能かをチェックする。
+    ///
+    /// # Errors
+    ///
+    /// 次の場合にエラーを返す。
+    ///
+    /// - 現在持っている音声モデルIDかスタイルIDが`model_header`と重複するとき
+    /// - 必要であるはずの`InferenceDomain`のモデルデータが欠けているとき
+    // FIXME: コメントとテストを書く
+    // - https://github.com/VOICEVOX/voicevox_core/pull/761#discussion_r1589978521
+    // - https://github.com/VOICEVOX/voicevox_core/pull/761#discussion_r1589976759
+    fn ensure_acceptable(&self, model_header: &VoiceModelHeader) -> LoadModelResult<()> {
+        let error = |context| LoadModelError {
+            path: model_header.path.clone(),
+            context,
+            source: None,
+        };
+
+        if self.0.contains_key(&model_header.id) {
+            return Err(error(LoadModelErrorKind::ModelAlreadyLoaded {
+                id: model_header.id.clone(),
+            }));
+        }
+
+        // FIXME: https://github.com/VOICEVOX/voicevox_core/pull/761#discussion_r1590200343
+
+        let loaded = self.speakers();
+        let external = model_header.metas.iter();
+        for (loaded, external) in iproduct!(loaded, external) {
+            if loaded.speaker_uuid() == external.speaker_uuid() {
+                loaded.warn_diff_except_styles(external);
+            }
+        }
+
+        let loaded = self.styles();
+        let external = model_header
+            .metas
+            .iter()
+            .flat_map(|speaker| speaker.styles());
+        if let Some((style, _)) =
+            iproduct!(loaded, external).find(|(loaded, external)| loaded.id() == external.id())
+        {
+            return Err(error(LoadModelErrorKind::StyleAlreadyLoaded {
+                id: *style.id(),
+            }));
+        }
+        Ok(())
+    }
+
+    fn insert(
+        &mut self,
+        model_header: &VoiceModelHeader,
+        session_sets_with_inner_ids: InferenceDomainMap<SessionSetsWithInnerIdsByDomain<R>>,
+    ) -> Result<()> {
+        self.ensure_acceptable(model_header)?;
+
+        let prev = self.0.insert(
+            model_header.id.clone(),
+            LoadedModel {
+                metas: model_header.metas.clone(),
+                session_sets_with_inner_ids,
+            },
+        );
+        assert!(prev.is_none());
+        Ok(())
+    }
+
+    fn remove(&mut self, model_id: &VoiceModelId) -> Result<()> {
+        if self.0.remove(model_id).is_none() {
+            return Err(ErrorRepr::ModelNotFound {
+                model_id: model_id.clone(),
+            }
+            .into());
+        }
+        Ok(())
+    }
+
+    fn speakers(&self) -> impl Iterator<Item = &SpeakerMeta> + Clone {
+        self.0.values().flat_map(|LoadedModel { metas, .. }| metas)
+    }
+
+    fn styles(&self) -> impl Iterator<Item = &StyleMeta> {
+        self.speakers().flat_map(|speaker| speaker.styles())
+    }
+}
+
+pub(crate) trait InferenceDomainExt: InferenceDomain {
+    fn visit<R: InferenceRuntime>(
+        map: &InferenceDomainMap<SessionSetsWithInnerIdsByDomain<R>>,
+    ) -> Option<&(StyleIdToModelInnerId, InferenceSessionSet<R, Self>)>;
+}
+
+#[duplicate_item(
+    T              field;
+    [ TalkDomain ] [ talk ];
+)]
+impl InferenceDomainExt for T {
+    fn visit<R: InferenceRuntime>(
+        map: &InferenceDomainMap<SessionSetsWithInnerIdsByDomain<R>>,
+    ) -> Option<&(StyleIdToModelInnerId, InferenceSessionSet<R, Self>)> {
+        map.field.as_ref()
+    }
+}
+
+impl<R: InferenceRuntime> InferenceDomainMap<SessionSetsWithInnerIdsByDomain<R>> {
+    fn get<D: InferenceDomainExt>(
+        &self,
+    ) -> Option<&(StyleIdToModelInnerId, InferenceSessionSet<R, D>)> {
+        D::visit(self)
+    }
+}
+
+impl InferenceDomainMap<ModelBytesWithInnerIdsByDomain> {
+    fn create_session_sets<R: InferenceRuntime>(
+        &self,
+        session_options: &InferenceDomainMap<SessionOptionsByDomain>,
+    ) -> anyhow::Result<InferenceDomainMap<SessionSetsWithInnerIdsByDomain<R>>> {
+        duplicate! {
+            [
+                field;
+                [ talk ];
+            ]
+            let field = self
+                .field
+                .as_ref()
+                .map(|(model_inner_ids, model_bytes)| {
+                    let session_set = InferenceSessionSet::new(model_bytes, &session_options.field)?;
+                    Ok::<_, anyhow::Error>((model_inner_ids.clone(), session_set))
+                })
+                .transpose()?;
+        }
+
+        Ok(InferenceDomainMap { talk })
+    }
+}
+
+type SessionOptionsByDomain = (EnumMap<TalkOperation, InferenceSessionOptions>,);
+
+type SessionSetsWithInnerIdsByDomain<R> =
+    (Option<(StyleIdToModelInnerId, InferenceSessionSet<R, TalkDomain>)>,);
+
+#[cfg(test)]
+mod tests {
+    use enum_map::enum_map;
+    use pretty_assertions::assert_eq;
+    use rstest::rstest;
+
+    use crate::{
+        infer::{
+            domains::{InferenceDomainMap, TalkOperation},
+            InferenceSessionOptions,
+        },
+        macros::tests::assert_debug_fmt_eq,
+        synthesizer::InferenceRuntimeImpl,
+    };
+
+    use super::Status;
+
+    #[rstest]
+    #[case(true, 0)]
+    #[case(true, 1)]
+    #[case(true, 8)]
+    #[case(false, 2)]
+    #[case(false, 4)]
+    #[case(false, 8)]
+    #[case(false, 0)]
+    fn status_new_works(#[case] use_gpu: bool, #[case] cpu_num_threads: u16) {
+        let light_session_options = InferenceSessionOptions::new(cpu_num_threads, false);
+        let heavy_session_options = InferenceSessionOptions::new(cpu_num_threads, use_gpu);
+        let session_options = InferenceDomainMap {
+            talk: enum_map! {
+                TalkOperation::PredictDuration
+                | TalkOperation::PredictIntonation => light_session_options,
+                TalkOperation::Decode => heavy_session_options,
+            },
+        };
+        let status = Status::<InferenceRuntimeImpl>::new(session_options);
+
+        assert_eq!(
+            light_session_options,
+            status.session_options.talk[TalkOperation::PredictDuration],
+        );
+        assert_eq!(
+            light_session_options,
+            status.session_options.talk[TalkOperation::PredictIntonation],
+        );
+        assert_eq!(
+            heavy_session_options,
+            status.session_options.talk[TalkOperation::Decode],
+        );
+
+        assert!(status.loaded_models.lock().unwrap().0.is_empty());
+    }
+
+    #[rstest]
+    #[tokio::test]
+    async fn status_load_model_works() {
+        let status = Status::<InferenceRuntimeImpl>::new(InferenceDomainMap {
+            talk: enum_map!(_ => InferenceSessionOptions::new(0, false)),
+        });
+        let model = &crate::tokio::VoiceModel::sample().await.unwrap();
+        let model_contents = &model.read_inference_models().await.unwrap();
+        let result = status.insert_model(model.header(), model_contents);
+        assert_debug_fmt_eq!(Ok(()), result);
+        assert_eq!(1, status.loaded_models.lock().unwrap().0.len());
+    }
+
+    #[rstest]
+    #[tokio::test]
+    async fn status_is_model_loaded_works() {
+        let status = Status::<InferenceRuntimeImpl>::new(InferenceDomainMap {
+            talk: enum_map!(_ => InferenceSessionOptions::new(0, false)),
+        });
+        let vvm = &crate::tokio::VoiceModel::sample().await.unwrap();
+        let model_header = vvm.header();
+        let model_contents = &vvm.read_inference_models().await.unwrap();
+        assert!(
+            !status.is_loaded_model(&model_header.id),
+            "model should  not be loaded"
+        );
+        let result = status.insert_model(model_header, model_contents);
+        assert_debug_fmt_eq!(Ok(()), result);
+        assert!(
+            status.is_loaded_model(&model_header.id),
+            "model should be loaded",
+        );
+    }
+}
diff --git a/crates/voicevox_core/src/synthesizer.rs b/crates/voicevox_core/src/synthesizer.rs
index 202e917c7..5e4894415 100644
--- a/crates/voicevox_core/src/synthesizer.rs
+++ b/crates/voicevox_core/src/synthesizer.rs
@@ -80,18 +80,18 @@ pub(crate) mod blocking {
     use enum_map::enum_map;
 
     use crate::{
-        engine::{self, create_kana, parse_kana, MoraModel, OjtPhoneme, Utterance},
+        engine::{create_kana, mora_to_text, MoraModel, OjtPhoneme},
         error::ErrorRepr,
         infer::{
-            domain::{
-                DecodeInput, DecodeOutput, InferenceDomainImpl, InferenceOperationImpl,
-                PredictDurationInput, PredictDurationOutput, PredictIntonationInput,
-                PredictIntonationOutput,
+            domains::{
+                DecodeInput, DecodeOutput, InferenceDomainMap, PredictDurationInput,
+                PredictDurationOutput, PredictIntonationInput, PredictIntonationOutput, TalkDomain,
+                TalkOperation,
             },
-            status::Status,
             InferenceSessionOptions,
         },
-        numerics::F32Ext as _,
+        status::Status,
+        text_analyzer::{KanaAnalyzer, OpenJTalkAnalyzer, TextAnalyzer},
         AccentPhraseModel, AudioQueryModel, FullcontextExtractor, Result, StyleId,
         SupportedDevices, SynthesisOptions, VoiceModelId, VoiceModelMeta,
     };
@@ -102,8 +102,9 @@ pub(crate) mod blocking {
 
     /// 音声シンセサイザ。
     pub struct Synthesizer<O> {
-        pub(super) status: Status<InferenceRuntimeImpl, InferenceDomainImpl>,
-        open_jtalk: O,
+        pub(super) status: Status<InferenceRuntimeImpl>,
+        open_jtalk_analyzer: OpenJTalkAnalyzer<O>,
+        kana_analyzer: KanaAnalyzer,
         use_gpu: bool,
     }
 
@@ -168,15 +169,18 @@ pub(crate) mod blocking {
             let heavy_session_options =
                 InferenceSessionOptions::new(options.cpu_num_threads, use_gpu);
 
-            let status = Status::new(enum_map! {
-                InferenceOperationImpl::PredictDuration
-                | InferenceOperationImpl::PredictIntonation => light_session_options,
-                InferenceOperationImpl::Decode => heavy_session_options,
+            let status = Status::new(InferenceDomainMap {
+                talk: enum_map! {
+                    TalkOperation::PredictDuration
+                    | TalkOperation::PredictIntonation => light_session_options,
+                    TalkOperation::Decode => heavy_session_options,
+                },
             });
 
             return Ok(Self {
                 status,
-                open_jtalk,
+                open_jtalk_analyzer: OpenJTalkAnalyzer::new(open_jtalk),
+                kana_analyzer: KanaAnalyzer,
                 use_gpu,
             });
 
@@ -299,8 +303,8 @@ pub(crate) mod blocking {
                     // VOICEVOX ENGINEと挙動を合わせるため、四捨五入ではなく偶数丸めをする
                     //
                     // https://github.com/VOICEVOX/voicevox_engine/issues/552
-                    let phoneme_length = ((*phoneme_length * RATE).round_ties_even_() / speed_scale)
-                        .round_ties_even_() as usize;
+                    let phoneme_length = ((*phoneme_length * RATE).round_ties_even() / speed_scale)
+                        .round_ties_even() as usize;
                     let phoneme_id = phoneme_data_list[i].phoneme_id();
 
                     for _ in 0..phoneme_length {
@@ -373,7 +377,7 @@ pub(crate) mod blocking {
                 let pitch = (*last_mora.pitch() + ADJUST_PITCH).min(MAX_PITCH);
 
                 MoraModel::new(
-                    mora_to_text(last_mora.vowel()),
+                    mora_to_text(None, last_mora.vowel()),
                     None,
                     None,
                     last_mora.vowel().clone(),
@@ -439,6 +443,7 @@ pub(crate) mod blocking {
         /// # async fn main() -> anyhow::Result<()> {
         /// # let synthesizer =
         /// #     voicevox_core::__internal::doctest_fixtures::synthesizer_with_sample_voice_model(
+        /// #         test_util::SAMPLE_VOICE_MODEL_FILE_PATH,
         /// #         test_util::OPEN_JTALK_DIC_DIR,
         /// #     )
         /// #     .await?;
@@ -457,7 +462,8 @@ pub(crate) mod blocking {
             kana: &str,
             style_id: StyleId,
         ) -> Result<Vec<AccentPhraseModel>> {
-            self.replace_mora_data(&parse_kana(kana)?, style_id)
+            let accent_phrases = self.kana_analyzer.analyze(kana)?;
+            self.replace_mora_data(&accent_phrases, style_id)
         }
 
         /// AccentPhraseの配列の音高・音素長を、特定の声で生成しなおす。
@@ -677,6 +683,7 @@ pub(crate) mod blocking {
         /// # async fn main() -> anyhow::Result<()> {
         /// # let synthesizer =
         /// #     voicevox_core::__internal::doctest_fixtures::synthesizer_with_sample_voice_model(
+        /// #         test_util::SAMPLE_VOICE_MODEL_FILE_PATH,
         /// #         test_util::OPEN_JTALK_DIC_DIR,
         /// #     )
         /// #     .await?;
@@ -725,6 +732,7 @@ pub(crate) mod blocking {
         /// # async fn main() -> anyhow::Result<()> {
         /// # let synthesizer =
         /// #     voicevox_core::__internal::doctest_fixtures::synthesizer_with_sample_voice_model(
+        /// #         test_util::SAMPLE_VOICE_MODEL_FILE_PATH,
         /// #         test_util::OPEN_JTALK_DIC_DIR,
         /// #     )
         /// #     .await?;
@@ -743,75 +751,7 @@ pub(crate) mod blocking {
             text: &str,
             style_id: StyleId,
         ) -> Result<Vec<AccentPhraseModel>> {
-            if text.is_empty() {
-                return Ok(Vec::new());
-            }
-
-            let utterance = Utterance::extract_full_context_label(&self.open_jtalk, text)?;
-
-            let accent_phrases: Vec<AccentPhraseModel> = utterance
-                .breath_groups()
-                .iter()
-                .enumerate()
-                .fold(Vec::new(), |mut accum_vec, (i, breath_group)| {
-                    accum_vec.extend(breath_group.accent_phrases().iter().enumerate().map(
-                        |(j, accent_phrase)| {
-                            let moras = accent_phrase
-                                .moras()
-                                .iter()
-                                .map(|mora| {
-                                    let mora_text = mora
-                                        .phonemes()
-                                        .iter()
-                                        .map(|phoneme| phoneme.phoneme().to_string())
-                                        .collect::<Vec<_>>()
-                                        .join("");
-
-                                    let (consonant, consonant_length) =
-                                        if let Some(consonant) = mora.consonant() {
-                                            (Some(consonant.phoneme().to_string()), Some(0.))
-                                        } else {
-                                            (None, None)
-                                        };
-
-                                    MoraModel::new(
-                                        mora_to_text(mora_text),
-                                        consonant,
-                                        consonant_length,
-                                        mora.vowel().phoneme().into(),
-                                        0.,
-                                        0.,
-                                    )
-                                })
-                                .collect();
-
-                            let pause_mora = if i != utterance.breath_groups().len() - 1
-                                && j == breath_group.accent_phrases().len() - 1
-                            {
-                                Some(MoraModel::new(
-                                    "、".into(),
-                                    None,
-                                    None,
-                                    "pau".into(),
-                                    0.,
-                                    0.,
-                                ))
-                            } else {
-                                None
-                            };
-
-                            AccentPhraseModel::new(
-                                moras,
-                                *accent_phrase.accent(),
-                                pause_mora,
-                                *accent_phrase.is_interrogative(),
-                            )
-                        },
-                    ));
-
-                    accum_vec
-                });
-
+            let accent_phrases = self.open_jtalk_analyzer.analyze(text)?;
             self.replace_mora_data(&accent_phrases, style_id)
         }
 
@@ -825,6 +765,7 @@ pub(crate) mod blocking {
         /// # async fn main() -> anyhow::Result<()> {
         /// # let synthesizer =
         /// #     voicevox_core::__internal::doctest_fixtures::synthesizer_with_sample_voice_model(
+        /// #         test_util::SAMPLE_VOICE_MODEL_FILE_PATH,
         /// #         test_util::OPEN_JTALK_DIC_DIR,
         /// #     )
         /// #     .await?;
@@ -895,12 +836,7 @@ pub(crate) mod blocking {
 
     impl<O> PerformInference for self::Synthesizer<O> {
         fn predict_duration(&self, phoneme_vector: &[i64], style_id: StyleId) -> Result<Vec<f32>> {
-            // FIXME: `Status::ids_for`があるため、ここは不要なはず
-            if !self.status.validate_speaker_id(style_id) {
-                return Err(ErrorRepr::StyleNotFound { style_id }.into());
-            }
-
-            let (model_id, model_inner_id) = self.status.ids_for(style_id)?;
+            let (model_id, model_inner_id) = self.status.ids_for::<TalkDomain>(style_id)?;
 
             let PredictDurationOutput {
                 phoneme_length: output,
@@ -935,12 +871,7 @@ pub(crate) mod blocking {
             end_accent_phrase_vector: &[i64],
             style_id: StyleId,
         ) -> Result<Vec<f32>> {
-            // FIXME: `Status::ids_for`があるため、ここは不要なはず
-            if !self.status.validate_speaker_id(style_id) {
-                return Err(ErrorRepr::StyleNotFound { style_id }.into());
-            }
-
-            let (model_id, model_inner_id) = self.status.ids_for(style_id)?;
+            let (model_id, model_inner_id) = self.status.ids_for::<TalkDomain>(style_id)?;
 
             let PredictIntonationOutput { f0_list: output } = self.status.run_session(
                 &model_id,
@@ -967,12 +898,7 @@ pub(crate) mod blocking {
             phoneme_vector: &[f32],
             style_id: StyleId,
         ) -> Result<Vec<f32>> {
-            // FIXME: `Status::ids_for`があるため、ここは不要なはず
-            if !self.status.validate_speaker_id(style_id) {
-                return Err(ErrorRepr::StyleNotFound { style_id }.into());
-            }
-
-            let (model_id, model_inner_id) = self.status.ids_for(style_id)?;
+            let (model_id, model_inner_id) = self.status.ids_for::<TalkDomain>(style_id)?;
 
             // 音が途切れてしまうのを避けるworkaround処理が入っている
             // TODO: 改善したらここのpadding処理を取り除く
@@ -1082,7 +1008,6 @@ pub(crate) mod blocking {
         }
 
         fn list_windows_video_cards() -> windows::core::Result<Vec<DXGI_ADAPTER_DESC>> {
-            #[allow(unsafe_code)]
             unsafe {
                 let factory = CreateDXGIFactory::<IDXGIFactory>()?;
                 (0..)
@@ -1175,21 +1100,6 @@ pub(crate) mod blocking {
         (consonant_phoneme_list, vowel_phoneme_list, vowel_indexes)
     }
 
-    fn mora_to_text(mora: impl AsRef<str>) -> String {
-        let last_char = mora.as_ref().chars().last().unwrap();
-        let mora = if ['A', 'I', 'U', 'E', 'O'].contains(&last_char) {
-            format!(
-                "{}{}",
-                &mora.as_ref()[0..mora.as_ref().len() - 1],
-                last_char.to_lowercase()
-            )
-        } else {
-            mora.as_ref().to_string()
-        };
-        // もしカタカナに変換できなければ、引数で与えた文字列がそのまま返ってくる
-        engine::mora2text(&mora).to_string()
-    }
-
     impl AudioQueryModel {
         fn from_accent_phrases(accent_phrases: Vec<AccentPhraseModel>) -> Self {
             let kana = create_kana(&accent_phrases);
@@ -1385,8 +1295,7 @@ mod tests {
 
     use super::{blocking::PerformInference as _, AccelerationMode, InitializeOptions};
     use crate::{
-        engine::MoraModel, macros::tests::assert_debug_fmt_eq, test_util::open_default_vvm_file,
-        AccentPhraseModel, Result, StyleId,
+        engine::MoraModel, macros::tests::assert_debug_fmt_eq, AccentPhraseModel, Result, StyleId,
     };
     use ::test_util::OPEN_JTALK_DIC_DIR;
     use rstest::rstest;
@@ -1405,7 +1314,7 @@ mod tests {
         .unwrap();
 
         let result = syntesizer
-            .load_voice_model(&open_default_vvm_file().await)
+            .load_voice_model(&crate::tokio::VoiceModel::sample().await.unwrap())
             .await;
 
         assert_debug_fmt_eq!(
@@ -1447,7 +1356,7 @@ mod tests {
             "expected is_model_loaded to return false, but got true",
         );
         syntesizer
-            .load_voice_model(&open_default_vvm_file().await)
+            .load_voice_model(&crate::tokio::VoiceModel::sample().await.unwrap())
             .await
             .unwrap();
 
@@ -1472,7 +1381,7 @@ mod tests {
         .unwrap();
 
         syntesizer
-            .load_voice_model(&open_default_vvm_file().await)
+            .load_voice_model(&crate::tokio::VoiceModel::sample().await.unwrap())
             .await
             .unwrap();
 
@@ -1502,7 +1411,7 @@ mod tests {
         )
         .unwrap();
         syntesizer
-            .load_voice_model(&open_default_vvm_file().await)
+            .load_voice_model(&crate::tokio::VoiceModel::sample().await.unwrap())
             .await
             .unwrap();
 
@@ -1541,7 +1450,7 @@ mod tests {
         )
         .unwrap();
         syntesizer
-            .load_voice_model(&open_default_vvm_file().await)
+            .load_voice_model(&crate::tokio::VoiceModel::sample().await.unwrap())
             .await
             .unwrap();
 
diff --git a/crates/voicevox_core/src/test_data/model_sources/load_model_works1/manifest.json b/crates/voicevox_core/src/test_data/model_sources/load_model_works1/manifest.json
deleted file mode 100644
index a8a7adebf..000000000
--- a/crates/voicevox_core/src/test_data/model_sources/load_model_works1/manifest.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "manifest_version": "0.0.0",
-  "metas_filename": "metas.json",
-  "decode_filename": "decode.onnx",
-  "predict_duration_filename": "predict_duration.onnx",
-  "predict_intonation_filename": "predict_intonation.onnx",
-  "style_id_to_model_inner_id": {
-    "302": 2,
-    "303": 3
-  }
-}
diff --git a/crates/voicevox_core/src/test_util.rs b/crates/voicevox_core/src/test_util.rs
index 926fe45bb..5b97f21fc 100644
--- a/crates/voicevox_core/src/test_util.rs
+++ b/crates/voicevox_core/src/test_util.rs
@@ -1,27 +1,9 @@
-use std::path::PathBuf;
+use ::test_util::SAMPLE_VOICE_MODEL_FILE_PATH;
 
 use crate::Result;
 
-pub async fn open_default_vvm_file() -> crate::tokio::VoiceModel {
-    crate::tokio::VoiceModel::from_path(
-        ::test_util::convert_zip_vvm(
-            PathBuf::from(env!("CARGO_WORKSPACE_DIR"))
-                .join(file!())
-                .parent()
-                .unwrap()
-                .join("test_data/model_sources")
-                .join("load_model_works1"),
-        )
-        .await,
-    )
-    .await
-    .unwrap()
-}
-
 impl crate::tokio::VoiceModel {
     pub(crate) async fn sample() -> Result<Self> {
-        return Self::from_path(PATH).await;
-
-        static PATH: &str = concat!(env!("CARGO_WORKSPACE_DIR"), "/model/sample.vvm");
+        Self::from_path(SAMPLE_VOICE_MODEL_FILE_PATH).await
     }
 }
diff --git a/crates/voicevox_core/src/text_analyzer.rs b/crates/voicevox_core/src/text_analyzer.rs
new file mode 100644
index 000000000..8540f26e0
--- /dev/null
+++ b/crates/voicevox_core/src/text_analyzer.rs
@@ -0,0 +1,40 @@
+use crate::{
+    engine::{extract_full_context_label, parse_kana},
+    AccentPhraseModel, FullcontextExtractor, Result,
+};
+
+pub(crate) trait TextAnalyzer {
+    fn analyze(&self, text: &str) -> Result<Vec<AccentPhraseModel>>;
+}
+
+/// AquesTalk風記法からAccentPhraseの配列を生成するTextAnalyzer
+#[derive(Clone)]
+pub(crate) struct KanaAnalyzer;
+
+impl TextAnalyzer for KanaAnalyzer {
+    fn analyze(&self, text: &str) -> Result<Vec<AccentPhraseModel>> {
+        if text.is_empty() {
+            return Ok(Vec::new());
+        }
+        Ok(parse_kana(text)?)
+    }
+}
+
+/// OpenJtalkからAccentPhraseの配列を生成するTextAnalyzer
+#[derive(Clone)]
+pub(crate) struct OpenJTalkAnalyzer<O>(O);
+
+impl<O> OpenJTalkAnalyzer<O> {
+    pub(crate) fn new(open_jtalk: O) -> Self {
+        Self(open_jtalk)
+    }
+}
+
+impl<O: FullcontextExtractor> TextAnalyzer for OpenJTalkAnalyzer<O> {
+    fn analyze(&self, text: &str) -> Result<Vec<AccentPhraseModel>> {
+        if text.is_empty() {
+            return Ok(Vec::new());
+        }
+        Ok(extract_full_context_label(&self.0, text)?)
+    }
+}
diff --git a/crates/voicevox_core/src/user_dict/part_of_speech_data.rs b/crates/voicevox_core/src/user_dict/part_of_speech_data.rs
index 76e36e389..b7bc95440 100644
--- a/crates/voicevox_core/src/user_dict/part_of_speech_data.rs
+++ b/crates/voicevox_core/src/user_dict/part_of_speech_data.rs
@@ -1,37 +1,36 @@
-use derive_getters::Getters;
 use once_cell::sync::Lazy;
 use std::collections::HashMap;
 
 use crate::UserDictWordType;
 
 /// 最小の優先度。
-pub static MIN_PRIORITY: u32 = 0;
+pub(super) static MIN_PRIORITY: u32 = 0;
 /// 最大の優先度。
-pub static MAX_PRIORITY: u32 = 10;
+pub(super) static MAX_PRIORITY: u32 = 10;
 
 /// 品詞ごとの情報。
-#[derive(Debug, Getters)]
-pub struct PartOfSpeechDetail {
+#[derive(Debug)]
+pub(super) struct PartOfSpeechDetail {
     /// 品詞。
-    pub part_of_speech: &'static str,
+    pub(super) part_of_speech: &'static str,
     /// 品詞細分類1。
-    pub part_of_speech_detail_1: &'static str,
+    pub(super) part_of_speech_detail_1: &'static str,
     /// 品詞細分類2。
-    pub part_of_speech_detail_2: &'static str,
+    pub(super) part_of_speech_detail_2: &'static str,
     /// 品詞細分類3。
-    pub part_of_speech_detail_3: &'static str,
+    pub(super) part_of_speech_detail_3: &'static str,
     /// 文脈IDは辞書の左・右文脈IDのこと。
     ///
     /// 参考: <https://github.com/VOICEVOX/open_jtalk/blob/427cfd761b78efb6094bea3c5bb8c968f0d711ab/src/mecab-naist-jdic/_left-id.def>
-    pub context_id: i32,
+    pub(super) context_id: i32,
     /// コストのパーセンタイル。
-    pub cost_candidates: Vec<i32>,
+    cost_candidates: Vec<i32>,
     /// アクセント結合規則の一覧。
-    pub accent_associative_rules: Vec<&'static str>,
+    _accent_associative_rules: Vec<&'static str>, // unused for now
 }
 
 // 元データ： https://github.com/VOICEVOX/voicevox_engine/blob/master/voicevox_engine/part_of_speech_data.py
-pub static PART_OF_SPEECH_DETAIL: Lazy<HashMap<UserDictWordType, PartOfSpeechDetail>> =
+pub(super) static PART_OF_SPEECH_DETAIL: Lazy<HashMap<UserDictWordType, PartOfSpeechDetail>> =
     Lazy::new(|| {
         HashMap::from_iter([
             (
@@ -45,7 +44,7 @@ pub static PART_OF_SPEECH_DETAIL: Lazy<HashMap<UserDictWordType, PartOfSpeechDet
                     cost_candidates: vec![
                         -988, 3488, 4768, 6048, 7328, 8609, 8734, 8859, 8984, 9110, 14176,
                     ],
-                    accent_associative_rules: vec!["*", "C1", "C2", "C3", "C4", "C5"],
+                    _accent_associative_rules: vec!["*", "C1", "C2", "C3", "C4", "C5"],
                 },
             ),
             (
@@ -59,7 +58,7 @@ pub static PART_OF_SPEECH_DETAIL: Lazy<HashMap<UserDictWordType, PartOfSpeechDet
                     cost_candidates: vec![
                         -4445, 49, 1473, 2897, 4321, 5746, 6554, 7362, 8170, 8979, 15001,
                     ],
-                    accent_associative_rules: vec!["*", "C1", "C2", "C3", "C4", "C5"],
+                    _accent_associative_rules: vec!["*", "C1", "C2", "C3", "C4", "C5"],
                 },
             ),
             (
@@ -73,7 +72,7 @@ pub static PART_OF_SPEECH_DETAIL: Lazy<HashMap<UserDictWordType, PartOfSpeechDet
                     cost_candidates: vec![
                         3100, 6160, 6360, 6561, 6761, 6962, 7414, 7866, 8318, 8771, 13433,
                     ],
-                    accent_associative_rules: vec!["*"],
+                    _accent_associative_rules: vec!["*"],
                 },
             ),
             (
@@ -87,7 +86,7 @@ pub static PART_OF_SPEECH_DETAIL: Lazy<HashMap<UserDictWordType, PartOfSpeechDet
                     cost_candidates: vec![
                         1527, 3266, 3561, 3857, 4153, 4449, 5149, 5849, 6549, 7250, 10001,
                     ],
-                    accent_associative_rules: vec!["*"],
+                    _accent_associative_rules: vec!["*"],
                 },
             ),
             (
@@ -101,7 +100,7 @@ pub static PART_OF_SPEECH_DETAIL: Lazy<HashMap<UserDictWordType, PartOfSpeechDet
                     cost_candidates: vec![
                         4399, 5373, 6041, 6710, 7378, 8047, 9440, 10834, 12228, 13622, 15847,
                     ],
-                    accent_associative_rules: vec!["*", "C1", "C2", "C3", "C4", "C5"],
+                    _accent_associative_rules: vec!["*", "C1", "C2", "C3", "C4", "C5"],
                 },
             ),
         ])
@@ -115,7 +114,7 @@ fn search_cost_candidates(context_id: i32) -> &'static [i32] {
         .cost_candidates
 }
 
-pub fn priority2cost(context_id: i32, priority: u32) -> i32 {
+pub(super) fn priority2cost(context_id: i32, priority: u32) -> i32 {
     let cost_candidates = search_cost_candidates(context_id);
     cost_candidates[(MAX_PRIORITY - priority) as usize]
 }
diff --git a/crates/voicevox_core/src/user_dict/word.rs b/crates/voicevox_core/src/user_dict/word.rs
index f2abc905d..7ed98a949 100644
--- a/crates/voicevox_core/src/user_dict/word.rs
+++ b/crates/voicevox_core/src/user_dict/word.rs
@@ -219,7 +219,7 @@ pub enum UserDictWordType {
 }
 
 impl UserDictWord {
-    pub fn to_mecab_format(&self) -> String {
+    pub(super) fn to_mecab_format(&self) -> String {
         let pos = PART_OF_SPEECH_DETAIL.get(&self.word_type).unwrap();
         format!(
             "{},{},{},{},{},{},{},{},{},{},{},{},{},{}/{},{}",
diff --git a/crates/voicevox_core/src/voice_model.rs b/crates/voicevox_core/src/voice_model.rs
index 96bf481d1..364c8db0a 100644
--- a/crates/voicevox_core/src/voice_model.rs
+++ b/crates/voicevox_core/src/voice_model.rs
@@ -1,21 +1,47 @@
+//! 音声モデル（ VVM ファイル）。
+//!
+//! VVM ファイルの定義と形式は[ドキュメント](../../../docs/vvm.md)を参照。
+
+use anyhow::anyhow;
 use derive_getters::Getters;
 use derive_new::new;
+use easy_ext::ext;
+use enum_map::EnumMap;
+use itertools::Itertools as _;
 use serde::Deserialize;
 
 use crate::{
-    manifest::{Manifest, ModelInnerId},
-    SpeakerMeta, StyleId, StyleMeta, VoiceModelMeta,
+    error::{LoadModelError, LoadModelErrorKind, LoadModelResult},
+    infer::{
+        domains::{TalkDomain, TalkOperation},
+        InferenceDomain,
+    },
+    manifest::{Manifest, ManifestDomains, StyleIdToModelInnerId},
+    SpeakerMeta, StyleMeta, StyleType, VoiceModelMeta,
 };
-use std::{collections::BTreeMap, path::PathBuf};
+use std::path::{Path, PathBuf};
 
 /// [`VoiceModelId`]の実体。
 ///
 /// [`VoiceModelId`]: VoiceModelId
 pub type RawVoiceModelId = String;
 
+pub(crate) type ModelBytesWithInnerIdsByDomain =
+    (Option<(StyleIdToModelInnerId, EnumMap<TalkOperation, Vec<u8>>)>,);
+
 /// 音声モデルID。
 #[derive(
-    PartialEq, Eq, Clone, Ord, PartialOrd, Deserialize, new, Getters, derive_more::Display, Debug,
+    PartialEq,
+    Eq,
+    Clone,
+    Ord,
+    Hash,
+    PartialOrd,
+    Deserialize,
+    new,
+    Getters,
+    derive_more::Display,
+    Debug,
 )]
 pub struct VoiceModelId {
     raw_voice_model_id: RawVoiceModelId,
@@ -31,29 +57,91 @@ pub(crate) struct VoiceModelHeader {
     pub(crate) id: VoiceModelId,
     manifest: Manifest,
     /// メタ情報。
+    ///
+    /// `manifest`が対応していない`StyleType`のスタイルは含まれるべきではない。
     pub(crate) metas: VoiceModelMeta,
     pub(crate) path: PathBuf,
 }
 
 impl VoiceModelHeader {
-    /// モデル内のすべてのスタイルに対するモデル内IDを取得する。
+    fn new(
+        id: VoiceModelId,
+        manifest: Manifest,
+        metas: &[u8],
+        path: &Path,
+    ) -> LoadModelResult<Self> {
+        let metas =
+            serde_json::from_slice::<VoiceModelMeta>(metas).map_err(|source| LoadModelError {
+                path: path.to_owned(),
+                context: LoadModelErrorKind::InvalidModelFormat,
+                source: Some(
+                    anyhow::Error::from(source)
+                        .context(format!("{}が不正です", manifest.metas_filename())),
+                ),
+            })?;
+
+        manifest
+            .domains()
+            .check_acceptable(&metas)
+            .map_err(|style_type| LoadModelError {
+                path: path.to_owned(),
+                context: LoadModelErrorKind::InvalidModelFormat,
+                source: Some(anyhow!(
+                    "{metas_filename}には`{style_type}`のスタイルが存在しますが、manifest.jsonでの\
+                     対応がありません",
+                    metas_filename = manifest.metas_filename(),
+                )),
+            })?;
+
+        Ok(Self {
+            id,
+            manifest,
+            metas,
+            path: path.to_owned(),
+        })
+    }
+}
+
+impl ManifestDomains {
+    /// manifestとして対応していない`StyleType`に対してエラーを発する。
     ///
-    /// モデル内IDのマッピングが存在しない場合はそのままスタイルIDを返す。
-    pub(crate) fn model_inner_ids(&self) -> BTreeMap<StyleId, ModelInnerId> {
-        self.metas
+    /// `Status`はこのバリデーションを信頼し、`InferenceDomain`の不足時にパニックする。
+    fn check_acceptable(&self, metas: &[SpeakerMeta]) -> std::result::Result<(), StyleType> {
+        let err = metas
             .iter()
             .flat_map(SpeakerMeta::styles)
-            .map(StyleMeta::id)
-            .map(|&style_id| {
-                let model_inner_id = self
-                    .manifest
-                    .style_id_to_model_inner_id()
-                    .get(&style_id)
-                    .copied()
-                    .unwrap_or_else(|| ModelInnerId::new(style_id.raw_id()));
-                (style_id, model_inner_id)
-            })
-            .collect()
+            .map(StyleMeta::r#type)
+            .copied()
+            .unique()
+            .find(|&style_type| !self.accepts(style_type));
+
+        match err {
+            Some(err) => Err(err),
+            None => Ok(()),
+        }
+    }
+
+    /// メタ情報にタイプが`style_type`のスタイルが含まれることを許容するかどうか。
+    ///
+    /// 例えば`self.talk`が`None`のとき、`StyleType::Talk`に対して`false`を返す。
+    fn accepts(&self, style_type: StyleType) -> bool {
+        let Self { talk } = self;
+
+        return TalkDomain::contains(style_type).implies(|| talk.is_some());
+
+        #[ext]
+        impl<D: InferenceDomain> D {
+            fn contains(style_type: StyleType) -> bool {
+                Self::style_types().contains(&style_type)
+            }
+        }
+
+        #[ext]
+        impl bool {
+            fn implies(self, other: impl FnOnce() -> Self) -> Self {
+                !self || other()
+            }
+        }
     }
 }
 
@@ -71,12 +159,12 @@ pub(crate) mod blocking {
 
     use crate::{
         error::{LoadModelError, LoadModelErrorKind, LoadModelResult},
-        infer::domain::InferenceOperationImpl,
-        manifest::Manifest,
+        infer::domains::InferenceDomainMap,
+        manifest::{Manifest, TalkManifest},
         VoiceModelMeta,
     };
 
-    use super::{VoiceModelHeader, VoiceModelId};
+    use super::{ModelBytesWithInnerIdsByDomain, VoiceModelHeader, VoiceModelId};
 
     /// 音声モデル。
     ///
@@ -89,39 +177,52 @@ pub(crate) mod blocking {
     impl self::VoiceModel {
         pub(crate) fn read_inference_models(
             &self,
-        ) -> LoadModelResult<EnumMap<InferenceOperationImpl, Vec<u8>>> {
+        ) -> LoadModelResult<InferenceDomainMap<ModelBytesWithInnerIdsByDomain>> {
             let reader = BlockingVvmEntryReader::open(&self.header.path)?;
 
-            let model_bytes = [
-                self.header.manifest.predict_duration_filename(),
-                self.header.manifest.predict_intonation_filename(),
-                self.header.manifest.decode_filename(),
-            ]
-            .into_par_iter()
-            .map(|filename| reader.read_vvm_entry(filename))
-            .collect::<std::result::Result<Vec<_>, _>>()?
-            .try_into()
-            .unwrap_or_else(|_| panic!("should be same length"));
-
-            Ok(EnumMap::from_array(model_bytes))
+            let talk = self
+                .header
+                .manifest
+                .domains()
+                .talk
+                .as_ref()
+                .map(
+                    |TalkManifest {
+                         predict_duration_filename,
+                         predict_intonation_filename,
+                         decode_filename,
+                         style_id_to_model_inner_id,
+                     }| {
+                        let model_bytes = [
+                            predict_duration_filename,
+                            predict_intonation_filename,
+                            decode_filename,
+                        ]
+                        .into_par_iter()
+                        .map(|filename| reader.read_vvm_entry(filename))
+                        .collect::<std::result::Result<Vec<_>, _>>()?
+                        .try_into()
+                        .unwrap_or_else(|_| panic!("should be same length"));
+
+                        let model_bytes = EnumMap::from_array(model_bytes);
+
+                        Ok((style_id_to_model_inner_id.clone(), model_bytes))
+                    },
+                )
+                .transpose()?;
+
+            Ok(InferenceDomainMap { talk })
         }
 
         /// VVMファイルから`VoiceModel`をコンストラクトする。
         pub fn from_path(path: impl AsRef<Path>) -> crate::Result<Self> {
-            let path = path.as_ref().to_owned();
-            let reader = BlockingVvmEntryReader::open(&path)?;
+            let path = path.as_ref();
+            let reader = BlockingVvmEntryReader::open(path)?;
             let manifest = reader.read_vvm_json::<Manifest>("manifest.json")?;
-            let metas = reader.read_vvm_json(manifest.metas_filename())?;
+            let metas = &reader.read_vvm_entry(manifest.metas_filename())?;
             let id = VoiceModelId::new(nanoid!());
-
-            Ok(Self {
-                header: VoiceModelHeader {
-                    id,
-                    metas,
-                    manifest,
-                    path,
-                },
-            })
+            let header = VoiceModelHeader::new(id, manifest, metas, path)?;
+            Ok(Self { header })
         }
 
         /// ID。
@@ -163,12 +264,13 @@ pub(crate) mod blocking {
             })
         }
 
+        // FIXME: manifest.json専用になっているので、そういう関数名にする
         fn read_vvm_json<T: DeserializeOwned>(&self, filename: &str) -> LoadModelResult<T> {
             let bytes = &self.read_vvm_entry(filename)?;
             serde_json::from_slice(bytes).map_err(|source| LoadModelError {
                 path: self.borrow_path().clone(),
-                context: LoadModelErrorKind::OpenZipFile,
-                source: Some(source.into()),
+                context: LoadModelErrorKind::InvalidModelFormat,
+                source: Some(anyhow::Error::from(source).context(format!("{filename}が不正です"))),
             })
         }
 
@@ -194,18 +296,18 @@ pub(crate) mod tokio {
 
     use derive_new::new;
     use enum_map::EnumMap;
-    use futures::future::join3;
+    use futures::future::{join3, OptionFuture};
     use nanoid::nanoid;
     use serde::de::DeserializeOwned;
 
     use crate::{
         error::{LoadModelError, LoadModelErrorKind, LoadModelResult},
-        infer::domain::InferenceOperationImpl,
-        manifest::Manifest,
+        infer::domains::InferenceDomainMap,
+        manifest::{Manifest, TalkManifest},
         Result, VoiceModelMeta,
     };
 
-    use super::{VoiceModelHeader, VoiceModelId};
+    use super::{ModelBytesWithInnerIdsByDomain, VoiceModelHeader, VoiceModelId};
 
     /// 音声モデル。
     ///
@@ -218,42 +320,49 @@ pub(crate) mod tokio {
     impl self::VoiceModel {
         pub(crate) async fn read_inference_models(
             &self,
-        ) -> LoadModelResult<EnumMap<InferenceOperationImpl, Vec<u8>>> {
+        ) -> LoadModelResult<InferenceDomainMap<ModelBytesWithInnerIdsByDomain>> {
             let reader = AsyncVvmEntryReader::open(&self.header.path).await?;
-            let (
-                decode_model_result,
-                predict_duration_model_result,
-                predict_intonation_model_result,
-            ) = join3(
-                reader.read_vvm_entry(self.header.manifest.decode_filename()),
-                reader.read_vvm_entry(self.header.manifest.predict_duration_filename()),
-                reader.read_vvm_entry(self.header.manifest.predict_intonation_filename()),
-            )
-            .await;
-
-            Ok(EnumMap::from_array([
-                predict_duration_model_result?,
-                predict_intonation_model_result?,
-                decode_model_result?,
-            ]))
+
+            let talk = OptionFuture::from(self.header.manifest.domains().talk.as_ref().map(
+                |TalkManifest {
+                     predict_duration_filename,
+                     predict_intonation_filename,
+                     decode_filename,
+                     style_id_to_model_inner_id,
+                 }| async {
+                    let (
+                        decode_model_result,
+                        predict_duration_model_result,
+                        predict_intonation_model_result,
+                    ) = join3(
+                        reader.read_vvm_entry(decode_filename),
+                        reader.read_vvm_entry(predict_duration_filename),
+                        reader.read_vvm_entry(predict_intonation_filename),
+                    )
+                    .await;
+
+                    let model_bytes = EnumMap::from_array([
+                        predict_duration_model_result?,
+                        predict_intonation_model_result?,
+                        decode_model_result?,
+                    ]);
+
+                    Ok((style_id_to_model_inner_id.clone(), model_bytes))
+                },
+            ))
+            .await
+            .transpose()?;
+
+            Ok(InferenceDomainMap { talk })
         }
         /// VVMファイルから`VoiceModel`をコンストラクトする。
         pub async fn from_path(path: impl AsRef<Path>) -> Result<Self> {
             let reader = AsyncVvmEntryReader::open(path.as_ref()).await?;
             let manifest = reader.read_vvm_json::<Manifest>("manifest.json").await?;
-            let metas = reader
-                .read_vvm_json::<VoiceModelMeta>(manifest.metas_filename())
-                .await?;
+            let metas = &reader.read_vvm_entry(manifest.metas_filename()).await?;
             let id = VoiceModelId::new(nanoid!());
-
-            Ok(Self {
-                header: VoiceModelHeader {
-                    id,
-                    metas,
-                    manifest,
-                    path: path.as_ref().into(),
-                },
-            })
+            let header = VoiceModelHeader::new(id, manifest, metas, path.as_ref())?;
+            Ok(Self { header })
         }
 
         /// ID。
@@ -277,46 +386,46 @@ pub(crate) mod tokio {
     }
 
     #[derive(new)]
-    struct AsyncVvmEntryReader {
-        reader: async_zip::read::fs::ZipFileReader,
+    struct AsyncVvmEntryReader<'a> {
+        path: &'a Path,
+        reader: async_zip::base::read::mem::ZipFileReader,
         entry_map: HashMap<String, AsyncVvmEntry>,
     }
 
-    impl AsyncVvmEntryReader {
-        async fn open(path: &Path) -> LoadModelResult<Self> {
-            let reader = async_zip::read::fs::ZipFileReader::new(path)
-                .await
-                .map_err(|source| LoadModelError {
-                    path: path.to_owned(),
-                    context: LoadModelErrorKind::OpenZipFile,
-                    source: Some(source.into()),
-                })?;
+    impl<'a> AsyncVvmEntryReader<'a> {
+        async fn open(path: &'a Path) -> LoadModelResult<Self> {
+            let reader = async {
+                let file = fs_err::tokio::read(path).await?;
+                async_zip::base::read::mem::ZipFileReader::new(file).await
+            }
+            .await
+            .map_err(|source| LoadModelError {
+                path: path.to_owned(),
+                context: LoadModelErrorKind::OpenZipFile,
+                source: Some(source.into()),
+            })?;
             let entry_map: HashMap<_, _> = reader
                 .file()
                 .entries()
                 .iter()
-                .filter(|e| !e.entry().dir())
-                .enumerate()
-                .map(|(i, e)| {
-                    (
-                        e.entry().filename().to_string(),
-                        AsyncVvmEntry {
-                            index: i,
-                            entry: e.entry().clone(),
-                        },
-                    )
+                .flat_map(|e| {
+                    // 非UTF-8のファイルを利用することはないため、無視する
+                    let filename = e.filename().as_str().ok()?;
+                    (!e.dir().ok()?).then_some(())?;
+                    Some((filename.to_owned(), (**e).clone()))
                 })
+                .enumerate()
+                .map(|(i, (filename, entry))| (filename, AsyncVvmEntry { index: i, entry }))
                 .collect();
-            Ok(AsyncVvmEntryReader::new(reader, entry_map))
+            Ok(AsyncVvmEntryReader::new(path, reader, entry_map))
         }
+        // FIXME: manifest.json専用になっているので、そういう関数名にする
         async fn read_vvm_json<T: DeserializeOwned>(&self, filename: &str) -> LoadModelResult<T> {
             let bytes = self.read_vvm_entry(filename).await?;
             serde_json::from_slice(&bytes).map_err(|source| LoadModelError {
-                path: self.reader.path().to_owned(),
-                context: LoadModelErrorKind::ReadZipEntry {
-                    filename: filename.to_owned(),
-                },
-                source: Some(source.into()),
+                path: self.path.to_owned(),
+                context: LoadModelErrorKind::InvalidModelFormat,
+                source: Some(anyhow::Error::from(source).context(format!("{filename}が不正です"))),
             })
         }
 
@@ -326,16 +435,14 @@ pub(crate) mod tokio {
                     .entry_map
                     .get(filename)
                     .ok_or_else(|| io::Error::from(io::ErrorKind::NotFound))?;
-                let mut manifest_reader = self.reader.entry(me.index).await?;
+                let mut manifest_reader = self.reader.reader_with_entry(me.index).await?;
                 let mut buf = Vec::with_capacity(me.entry.uncompressed_size() as usize);
-                manifest_reader
-                    .read_to_end_checked(&mut buf, &me.entry)
-                    .await?;
+                manifest_reader.read_to_end_checked(&mut buf).await?;
                 Ok::<_, anyhow::Error>(buf)
             }
             .await
             .map_err(|source| LoadModelError {
-                path: self.reader.path().to_owned(),
+                path: self.path.to_owned(),
                 context: LoadModelErrorKind::ReadZipEntry {
                     filename: filename.to_owned(),
                 },
@@ -344,3 +451,102 @@ pub(crate) mod tokio {
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use once_cell::sync::Lazy;
+    use rstest::{fixture, rstest};
+    use serde_json::json;
+
+    use crate::{
+        manifest::{ManifestDomains, TalkManifest},
+        SpeakerMeta, StyleType,
+    };
+
+    #[rstest]
+    #[case(
+        &ManifestDomains {
+            talk: None,
+        },
+        &[],
+        Ok(())
+    )]
+    #[case(
+        &ManifestDomains {
+            talk: Some(TALK_MANIFEST.clone()),
+        },
+        &[speaker(&[StyleType::Talk])],
+        Ok(())
+    )]
+    #[case(
+        &ManifestDomains {
+            talk: Some(TALK_MANIFEST.clone()),
+        },
+        &[speaker(&[StyleType::Talk, StyleType::Sing])],
+        Ok(())
+    )]
+    #[case(
+        &ManifestDomains {
+            talk: None,
+        },
+        &[speaker(&[StyleType::Talk])],
+        Err(())
+    )]
+    fn check_acceptable_works(
+        #[case] manifest: &ManifestDomains,
+        #[case] metas: &[SpeakerMeta],
+        #[case] expected: std::result::Result<(), ()>,
+    ) {
+        let actual = manifest.check_acceptable(metas).map_err(|_| ());
+        assert_eq!(expected, actual);
+    }
+
+    static TALK_MANIFEST: Lazy<TalkManifest> = Lazy::new(|| TalkManifest {
+        predict_duration_filename: "".to_owned(),
+        predict_intonation_filename: "".to_owned(),
+        decode_filename: "".to_owned(),
+        style_id_to_model_inner_id: Default::default(),
+    });
+
+    #[fixture]
+    fn talk_speaker() -> SpeakerMeta {
+        serde_json::from_value(json!({
+            "name": "dummy",
+            "styles": [
+                {
+                    "id": 0,
+                    "name": "style1",
+                    "type": "talk",
+                    "order": 0
+                }
+            ],
+            "version": "0.0.1",
+            "speaker_uuid": "574bc678-8370-44be-b941-08e46e7b47d7",
+            "order": 0
+        }))
+        .unwrap()
+    }
+
+    fn speaker(style_types: &'static [StyleType]) -> SpeakerMeta {
+        let styles = style_types
+            .iter()
+            .map(|style_type| {
+                json!({
+                    "id": 0,
+                    "name": "style1",
+                    "type": style_type,
+                    "order": null
+                })
+            })
+            .collect::<Vec<_>>();
+
+        serde_json::from_value(json!({
+            "name": "dummy",
+            "styles": styles,
+            "version": "0.0.1",
+            "speaker_uuid": "574bc678-8370-44be-b941-08e46e7b47d7",
+            "order": null
+        }))
+        .unwrap()
+    }
+}
diff --git a/crates/voicevox_core_c_api/Cargo.toml b/crates/voicevox_core_c_api/Cargo.toml
index ee45eee79..ad3a65fa7 100644
--- a/crates/voicevox_core_c_api/Cargo.toml
+++ b/crates/voicevox_core_c_api/Cargo.toml
@@ -13,11 +13,13 @@ harness = false
 name = "e2e"
 
 [features]
+cuda = ["voicevox_core/cuda"]
 directml = ["voicevox_core/directml"]
 
 [dependencies]
 anstream = { workspace = true, default-features = false, features = ["auto"] }
 anstyle-query.workspace = true
+camino.workspace = true
 chrono = { workspace = true, default-features = false, features = ["clock"] }
 colorchoice.workspace = true
 cstr.workspace = true
@@ -48,7 +50,6 @@ ndarray-stats.workspace = true
 regex.workspace = true
 serde = { workspace = true, features = ["derive"] }
 serde_with.workspace = true
-strum = { workspace = true, features = ["derive"] }
 tempfile.workspace = true
 test_util.workspace = true
 toml.workspace = true
diff --git a/crates/voicevox_core_c_api/include/voicevox_core.h b/crates/voicevox_core_c_api/include/voicevox_core.h
index 2275bd1d7..592ec8abb 100644
--- a/crates/voicevox_core_c_api/include/voicevox_core.h
+++ b/crates/voicevox_core_c_api/include/voicevox_core.h
@@ -142,6 +142,10 @@ enum VoicevoxResultCode
    * ZIP内のファイルが読めなかった
    */
   VOICEVOX_RESULT_READ_ZIP_ENTRY_ERROR = 17,
+  /**
+   * モデルの形式が不正
+   */
+  VOICEVOX_RESULT_INVALID_MODEL_HEADER_ERROR = 28,
   /**
    * すでに読み込まれている音声モデルを読み込もうとした
    */
diff --git a/crates/voicevox_core_c_api/src/c_impls.rs b/crates/voicevox_core_c_api/src/c_impls.rs
index 0b57db3e5..4e73bf0fb 100644
--- a/crates/voicevox_core_c_api/src/c_impls.rs
+++ b/crates/voicevox_core_c_api/src/c_impls.rs
@@ -1,11 +1,12 @@
 use std::{ffi::CString, path::Path};
 
+use camino::Utf8Path;
 use voicevox_core::{InitializeOptions, Result, VoiceModelId};
 
 use crate::{helpers::CApiResult, OpenJtalkRc, VoicevoxSynthesizer, VoicevoxVoiceModel};
 
 impl OpenJtalkRc {
-    pub(crate) fn new(open_jtalk_dic_dir: impl AsRef<Path>) -> Result<Self> {
+    pub(crate) fn new(open_jtalk_dic_dir: impl AsRef<Utf8Path>) -> Result<Self> {
         Ok(Self {
             open_jtalk: voicevox_core::blocking::OpenJtalk::new(open_jtalk_dic_dir)?,
         })
diff --git a/crates/voicevox_core_c_api/src/compatible_engine.rs b/crates/voicevox_core_c_api/src/compatible_engine.rs
index 5a6f20f76..6755910f5 100644
--- a/crates/voicevox_core_c_api/src/compatible_engine.rs
+++ b/crates/voicevox_core_c_api/src/compatible_engine.rs
@@ -41,7 +41,9 @@ static VOICE_MODEL_SET: Lazy<VoiceModelSet> = Lazy::new(|| {
         .iter()
         .map(|vvm| (vvm.id().clone(), vvm.clone()))
         .collect();
-    let metas: Vec<_> = all_vvms.iter().flat_map(|vvm| vvm.metas()).collect();
+    let metas = voicevox_core::__internal::interop::merge_metas(
+        all_vvms.iter().flat_map(|vvm| vvm.metas()),
+    );
     let mut style_model_map = BTreeMap::default();
     for vvm in all_vvms.iter() {
         for meta in vvm.metas().iter() {
diff --git a/crates/voicevox_core_c_api/src/helpers.rs b/crates/voicevox_core_c_api/src/helpers.rs
index d69641c34..1c163a0d0 100644
--- a/crates/voicevox_core_c_api/src/helpers.rs
+++ b/crates/voicevox_core_c_api/src/helpers.rs
@@ -37,6 +37,7 @@ pub(crate) fn into_result_code_with_error(result: CApiResult<()>) -> VoicevoxRes
                 GpuSupport => VOICEVOX_RESULT_GPU_SUPPORT_ERROR,
                 OpenZipFile => VOICEVOX_RESULT_OPEN_ZIP_FILE_ERROR,
                 ReadZipEntry => VOICEVOX_RESULT_READ_ZIP_ENTRY_ERROR,
+                InvalidModelFormat => VOICEVOX_RESULT_INVALID_MODEL_HEADER_ERROR,
                 ModelAlreadyLoaded => VOICEVOX_RESULT_MODEL_ALREADY_LOADED_ERROR,
                 StyleAlreadyLoaded => VOICEVOX_RESULT_STYLE_ALREADY_LOADED_ERROR,
                 InvalidModelData => VOICEVOX_RESULT_INVALID_MODEL_DATA_ERROR,
@@ -63,7 +64,7 @@ pub(crate) fn into_result_code_with_error(result: CApiResult<()>) -> VoicevoxRes
 pub(crate) type CApiResult<T> = std::result::Result<T, CApiError>;
 
 #[derive(Error, Debug)]
-pub enum CApiError {
+pub(crate) enum CApiError {
     #[error("{0}")]
     RustApi(#[from] voicevox_core::Error),
     #[error("UTF-8として不正な入力です")]
diff --git a/crates/voicevox_core_c_api/src/lib.rs b/crates/voicevox_core_c_api/src/lib.rs
index d2946f02b..fbb0bf6bf 100644
--- a/crates/voicevox_core_c_api/src/lib.rs
+++ b/crates/voicevox_core_c_api/src/lib.rs
@@ -59,7 +59,13 @@ fn init_logger_once() {
             .with_env_filter(if env::var_os(EnvFilter::DEFAULT_ENV).is_some() {
                 EnvFilter::from_default_env()
             } else {
-                "error,voicevox_core=info,voicevox_core_c_api=info,onnxruntime=info".into()
+                pub const ORT_LOGGING_LEVEL: &str = if cfg!(debug_assertions) {
+                    "info"
+                } else {
+                    "warn"
+                };
+                format!("error,voicevox_core=info,voicevox_core_c_api=info,ort={ORT_LOGGING_LEVEL}")
+                    .into()
             })
             .with_timer(local_time as fn(&mut Writer<'_>) -> _)
             .with_ansi(ansi)
@@ -441,8 +447,10 @@ pub unsafe extern "C" fn voicevox_synthesizer_is_loaded_voice_model(
     model_id: VoicevoxVoiceModelId,
 ) -> bool {
     init_logger_once();
-    // FIXME: 不正なUTF-8文字列に対し、正式なエラーとするか黙って`false`を返す
-    let raw_model_id = ensure_utf8(unsafe { CStr::from_ptr(model_id) }).unwrap();
+    let Ok(raw_model_id) = ensure_utf8(unsafe { CStr::from_ptr(model_id) }) else {
+        // 与えられたIDがUTF-8ではない場合、それに対応する`VoicdModel`は確実に存在しない
+        return false;
+    };
     synthesizer
         .synthesizer()
         .is_loaded_voice_model(&VoiceModelId::new(raw_model_id.into()))
diff --git a/crates/voicevox_core_c_api/src/result_code.rs b/crates/voicevox_core_c_api/src/result_code.rs
index 65236ada4..0897dfa87 100644
--- a/crates/voicevox_core_c_api/src/result_code.rs
+++ b/crates/voicevox_core_c_api/src/result_code.rs
@@ -37,6 +37,8 @@ pub enum VoicevoxResultCode {
     VOICEVOX_RESULT_OPEN_ZIP_FILE_ERROR = 16,
     /// ZIP内のファイルが読めなかった
     VOICEVOX_RESULT_READ_ZIP_ENTRY_ERROR = 17,
+    /// モデルの形式が不正
+    VOICEVOX_RESULT_INVALID_MODEL_HEADER_ERROR = 28,
     /// すでに読み込まれている音声モデルを読み込もうとした
     VOICEVOX_RESULT_MODEL_ALREADY_LOADED_ERROR = 18,
     /// すでに読み込まれているスタイルを読み込もうとした
@@ -90,6 +92,7 @@ pub(crate) const fn error_result_to_message(result_code: VoicevoxResultCode) ->
         VOICEVOX_RESULT_READ_ZIP_ENTRY_ERROR => {
             cstr!("ZIP内のファイルを読むことができませんでした")
         }
+        VOICEVOX_RESULT_INVALID_MODEL_HEADER_ERROR => cstr!("モデルの形式が不正です"),
         VOICEVOX_RESULT_MODEL_ALREADY_LOADED_ERROR => cstr!("同じIDのモデルを読むことはできません"),
         VOICEVOX_RESULT_STYLE_ALREADY_LOADED_ERROR => {
             cstr!("同じIDのスタイルを読むことはできません")
diff --git a/crates/voicevox_core_c_api/tests/e2e/assert_cdylib.rs b/crates/voicevox_core_c_api/tests/e2e/assert_cdylib.rs
index 11da69437..cfbec5c31 100644
--- a/crates/voicevox_core_c_api/tests/e2e/assert_cdylib.rs
+++ b/crates/voicevox_core_c_api/tests/e2e/assert_cdylib.rs
@@ -36,7 +36,7 @@ pub(crate) fn exec<C: TestContext>() -> anyhow::Result<()> {
         let exec_c_api_e2e_test = serde_json::from_str::<Box<dyn TestCase>>(&exec_c_api_e2e_test)?;
 
         return unsafe {
-            let lib = &Library::new(C::cdylib_path())?;
+            let lib = Library::new(C::cdylib_path())?;
             exec_c_api_e2e_test.exec(lib)
         };
     }
@@ -46,11 +46,7 @@ pub(crate) fn exec<C: TestContext>() -> anyhow::Result<()> {
     // テスト対象が無いときに`cargo build`をスキップしたいが、判定部分がプライベート。
     // そのためスキップするのはCLIオプションに`--ignored`か`--include-ignored`が無いときのみ
     if args.ignored || args.include_ignored {
-        let mut cmd = cmd!(env!("CARGO"), "build", "--release", "--lib");
-        for (k, v) in C::BUILD_ENVS {
-            cmd = cmd.env(k, v);
-        }
-        cmd.run()?;
+        cmd!(env!("CARGO"), "build", "--release", "--lib").run()?;
 
         ensure!(
             C::cdylib_path().exists(),
@@ -102,7 +98,6 @@ pub(crate) fn exec<C: TestContext>() -> anyhow::Result<()> {
 pub(crate) trait TestContext {
     const TARGET_DIR: &'static str;
     const CDYLIB_NAME: &'static str;
-    const BUILD_ENVS: &'static [(&'static str, &'static str)];
     const RUNTIME_ENVS: &'static [(&'static str, &'static str)];
 }
 
@@ -113,7 +108,7 @@ pub(crate) trait TestCase: Send {
     ///
     /// `exec`は独立したプロセスで実行されるため、stdout/stderrへの出力をしたりグローバルな状態に
     /// 依存してもよい。
-    unsafe fn exec(&self, lib: &Library) -> anyhow::Result<()>;
+    unsafe fn exec(&self, lib: Library) -> anyhow::Result<()>;
 
     /// 別プロセスで実行された`exec`の結果をチェックする。
     fn assert_output(&self, output: Utf8Output) -> AssertResult;
diff --git a/crates/voicevox_core_c_api/tests/e2e/main.rs b/crates/voicevox_core_c_api/tests/e2e/main.rs
index b8d3165c6..43dc3a95e 100644
--- a/crates/voicevox_core_c_api/tests/e2e/main.rs
+++ b/crates/voicevox_core_c_api/tests/e2e/main.rs
@@ -1,15 +1,14 @@
+use test_util::c_api::VV_MODELS_ROOT_DIR;
+
 mod assert_cdylib;
 mod float_assert;
 mod log_mask;
 mod snapshots;
-mod symbols;
 mod testcases;
 
 // voicevox_core_c_apiのcdylibを対象にテストを行う。
 //
-// C APIの定義を変更する場合:
-// 1. symbols.rsの実装を変更する。
-// 2. 1.によってコンパイルが通らなくなったら、適宜修正する。
+// C APIの定義を変更した場合は、テスト実行前に`cargo xtask update-c-header`を実行すること。
 //
 // テストを追加する場合:
 // 1. testcases/{テスト名}.rsを追加し、testcases.rsでマウントする。
@@ -25,17 +24,7 @@ fn main() -> anyhow::Result<()> {
     impl assert_cdylib::TestContext for TestContext {
         const TARGET_DIR: &'static str = "../../target";
         const CDYLIB_NAME: &'static str = "voicevox_core";
-        const BUILD_ENVS: &'static [(&'static str, &'static str)] = &[
-            // 他の単体テストが動いているときにonnxruntime-sysの初回ビルドを行うと、Windows環境だと
-            // `$ORT_OUT_DIR`のハックが問題を起こす。そのためこのハック自体を無効化する
-            //
-            // featuresの差分を出さないように`cargo build`することができればonnxruntime-sysの
-            // ビルド自体がされないのだが、このバイナリから`cargo build`の状況を知るのは無理に近い
-            ("ORT_OUT_DIR", ""),
-            // DirectMLとCUDAは無効化
-            ("ORT_USE_CUDA", "0"),
-        ];
         const RUNTIME_ENVS: &'static [(&'static str, &'static str)] =
-            &[("VV_MODELS_ROOT_DIR", "../../model")];
+            &[("VV_MODELS_ROOT_DIR", VV_MODELS_ROOT_DIR)];
     }
 }
diff --git a/crates/voicevox_core_c_api/tests/e2e/snapshots.toml b/crates/voicevox_core_c_api/tests/e2e/snapshots.toml
index 8f3fa4f3b..151074cb3 100644
--- a/crates/voicevox_core_c_api/tests/e2e/snapshots.toml
+++ b/crates/voicevox_core_c_api/tests/e2e/snapshots.toml
@@ -6,37 +6,48 @@ metas = '''
     "styles": [
       {
         "id": 0,
-        "name": "style1"
+        "name": "style1",
+        "type": "talk",
+        "order": null
       }
     ],
     "version": "0.0.1",
-    "speaker_uuid": "574bc678-8370-44be-b941-08e46e7b47d7"
+    "speaker_uuid": "574bc678-8370-44be-b941-08e46e7b47d7",
+    "order": null
   },
   {
     "name": "dummy2",
     "styles": [
       {
         "id": 1,
-        "name": "style2"
+        "name": "style2",
+        "type": "talk",
+        "order": null
       }
     ],
     "version": "0.0.1",
-    "speaker_uuid": "dd9ccd75-75f6-40ce-a3db-960cbed2e905"
+    "speaker_uuid": "dd9ccd75-75f6-40ce-a3db-960cbed2e905",
+    "order": null
   },
   {
     "name": "dummy3",
     "styles": [
       {
         "id": 302,
-        "name": "style3-1"
+        "name": "style3-1",
+        "type": "talk",
+        "order": null
       },
       {
         "id": 303,
-        "name": "style3-2"
+        "name": "style3-2",
+        "type": "talk",
+        "order": null
       }
     ],
     "version": "0.0.1",
-    "speaker_uuid": "5d3d9aa9-88e5-4a96-8ef7-f13a3cad1cb3"
+    "speaker_uuid": "5d3d9aa9-88e5-4a96-8ef7-f13a3cad1cb3",
+    "order": null
   }
 ]'''
 stderr.windows = '''
@@ -89,37 +100,48 @@ metas = '''
     "styles": [
       {
         "id": 0,
-        "name": "style1"
+        "name": "style1",
+        "type": "talk",
+        "order": null
       }
     ],
     "version": "0.0.1",
-    "speaker_uuid": "574bc678-8370-44be-b941-08e46e7b47d7"
+    "speaker_uuid": "574bc678-8370-44be-b941-08e46e7b47d7",
+    "order": null
   },
   {
     "name": "dummy2",
     "styles": [
       {
         "id": 1,
-        "name": "style2"
+        "name": "style2",
+        "type": "talk",
+        "order": null
       }
     ],
     "version": "0.0.1",
-    "speaker_uuid": "dd9ccd75-75f6-40ce-a3db-960cbed2e905"
+    "speaker_uuid": "dd9ccd75-75f6-40ce-a3db-960cbed2e905",
+    "order": null
   },
   {
     "name": "dummy3",
     "styles": [
       {
         "id": 302,
-        "name": "style3-1"
+        "name": "style3-1",
+        "type": "talk",
+        "order": null
       },
       {
         "id": 303,
-        "name": "style3-2"
+        "name": "style3-2",
+        "type": "talk",
+        "order": null
       }
     ],
     "version": "0.0.1",
-    "speaker_uuid": "5d3d9aa9-88e5-4a96-8ef7-f13a3cad1cb3"
+    "speaker_uuid": "5d3d9aa9-88e5-4a96-8ef7-f13a3cad1cb3",
+    "order": null
   }
 ]'''
 stderr.windows = '''
diff --git a/crates/voicevox_core_c_api/tests/e2e/symbols.rs b/crates/voicevox_core_c_api/tests/e2e/symbols.rs
deleted file mode 100644
index f6ecd4a3b..000000000
--- a/crates/voicevox_core_c_api/tests/e2e/symbols.rs
+++ /dev/null
@@ -1,334 +0,0 @@
-use std::ffi::{c_char, c_int, c_void};
-
-use libloading::{Library, Symbol};
-use strum::EnumIter;
-
-/// voicevox\_core\_c\_apiのcdylibのシンボルを集めたもの。
-#[allow(dead_code)] // TODO: WIP
-pub(crate) struct Symbols<'lib> {
-    pub(crate) voicevox_open_jtalk_rc_new: Symbol<
-        'lib,
-        unsafe extern "C" fn(*const c_char, *mut *mut OpenJtalkRc) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_open_jtalk_rc_use_user_dict: Symbol<
-        'lib,
-        unsafe extern "C" fn(*mut OpenJtalkRc, *const VoicevoxUserDict) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_open_jtalk_rc_delete: Symbol<'lib, unsafe extern "C" fn(*mut OpenJtalkRc)>,
-    pub(crate) voicevox_make_default_initialize_options:
-        Symbol<'lib, unsafe extern "C" fn() -> VoicevoxInitializeOptions>,
-    pub(crate) voicevox_get_version: Symbol<'lib, unsafe extern "C" fn() -> *const c_char>,
-    pub(crate) voicevox_voice_model_new_from_path: Symbol<
-        'lib,
-        unsafe extern "C" fn(*const c_char, *mut *mut VoicevoxVoiceModel) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_voice_model_id:
-        Symbol<'lib, unsafe extern "C" fn(*const VoicevoxVoiceModel) -> VoicevoxVoiceModelId>,
-    pub(crate) voicevox_voice_model_get_metas_json:
-        Symbol<'lib, unsafe extern "C" fn(*const VoicevoxVoiceModel) -> *const c_char>,
-    pub(crate) voicevox_voice_model_delete:
-        Symbol<'lib, unsafe extern "C" fn(*mut VoicevoxVoiceModel)>,
-    pub(crate) voicevox_synthesizer_new: Symbol<
-        'lib,
-        unsafe extern "C" fn(
-            *const OpenJtalkRc,
-            VoicevoxInitializeOptions,
-            *mut *mut VoicevoxSynthesizer,
-        ) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_synthesizer_delete:
-        Symbol<'lib, unsafe extern "C" fn(*mut VoicevoxSynthesizer)>,
-    pub(crate) voicevox_synthesizer_load_voice_model: Symbol<
-        'lib,
-        unsafe extern "C" fn(
-            *mut VoicevoxSynthesizer,
-            *const VoicevoxVoiceModel,
-        ) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_synthesizer_unload_voice_model: Symbol<
-        'lib,
-        unsafe extern "C" fn(*mut VoicevoxSynthesizer, VoicevoxVoiceModelId) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_synthesizer_is_gpu_mode:
-        Symbol<'lib, unsafe extern "C" fn(*const VoicevoxSynthesizer) -> bool>,
-    pub(crate) voicevox_synthesizer_is_loaded_voice_model: Symbol<
-        'lib,
-        unsafe extern "C" fn(*const VoicevoxSynthesizer, VoicevoxVoiceModelId) -> bool,
-    >,
-    pub(crate) voicevox_synthesizer_create_metas_json:
-        Symbol<'lib, unsafe extern "C" fn(*const VoicevoxSynthesizer) -> *mut c_char>,
-    pub(crate) voicevox_create_supported_devices_json:
-        Symbol<'lib, unsafe extern "C" fn(*mut *mut c_char) -> VoicevoxResultCode>,
-    pub(crate) voicevox_synthesizer_create_audio_query_from_kana: Symbol<
-        'lib,
-        unsafe extern "C" fn(
-            *const VoicevoxSynthesizer,
-            *const c_char,
-            VoicevoxStyleId,
-            *mut *mut c_char,
-        ) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_synthesizer_create_audio_query: Symbol<
-        'lib,
-        unsafe extern "C" fn(
-            *const VoicevoxSynthesizer,
-            *const c_char,
-            VoicevoxStyleId,
-            *mut *mut c_char,
-        ) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_make_default_synthesis_options:
-        Symbol<'lib, unsafe extern "C" fn() -> VoicevoxSynthesisOptions>,
-    pub(crate) voicevox_synthesizer_synthesis: Symbol<
-        'lib,
-        unsafe extern "C" fn(
-            *const VoicevoxSynthesizer,
-            *const c_char,
-            VoicevoxStyleId,
-            VoicevoxSynthesisOptions,
-            *mut usize,
-            *mut *mut u8,
-        ) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_make_default_tts_options:
-        Symbol<'lib, unsafe extern "C" fn() -> VoicevoxTtsOptions>,
-    pub(crate) voicevox_synthesizer_tts_from_kana: Symbol<
-        'lib,
-        unsafe extern "C" fn(
-            *const VoicevoxSynthesizer,
-            *const c_char,
-            VoicevoxStyleId,
-            VoicevoxTtsOptions,
-            *mut usize,
-            *mut *mut u8,
-        ) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_synthesizer_tts: Symbol<
-        'lib,
-        unsafe extern "C" fn(
-            *const VoicevoxSynthesizer,
-            *const c_char,
-            VoicevoxStyleId,
-            VoicevoxTtsOptions,
-            *mut usize,
-            *mut *mut u8,
-        ) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_json_free: Symbol<'lib, unsafe extern "C" fn(*mut c_char)>,
-    pub(crate) voicevox_wav_free: Symbol<'lib, unsafe extern "C" fn(*mut u8)>,
-    pub(crate) voicevox_error_result_to_message:
-        Symbol<'lib, unsafe extern "C" fn(VoicevoxResultCode) -> *const c_char>,
-
-    pub(crate) initialize: Symbol<'lib, unsafe extern "C" fn(bool, c_int, bool) -> bool>,
-    pub(crate) load_model: Symbol<'lib, unsafe extern "C" fn(i64) -> bool>,
-    pub(crate) is_model_loaded: Symbol<'lib, unsafe extern "C" fn(i64) -> bool>,
-    pub(crate) finalize: Symbol<'lib, unsafe extern "C" fn()>,
-    pub(crate) metas: Symbol<'lib, unsafe extern "C" fn() -> *const c_char>,
-    pub(crate) last_error_message: Symbol<'lib, unsafe extern "C" fn() -> *const c_char>,
-    pub(crate) supported_devices: Symbol<'lib, unsafe extern "C" fn() -> *const c_char>,
-    pub(crate) yukarin_s_forward:
-        Symbol<'lib, unsafe extern "C" fn(i64, *mut i64, *mut i64, *mut f32) -> bool>,
-    pub(crate) yukarin_sa_forward: Symbol<
-        'lib,
-        unsafe extern "C" fn(
-            i64,
-            *mut i64,
-            *mut i64,
-            *mut i64,
-            *mut i64,
-            *mut i64,
-            *mut i64,
-            *mut i64,
-            *mut f32,
-        ) -> bool,
-    >,
-    pub(crate) decode_forward: Symbol<
-        'lib,
-        unsafe extern "C" fn(i64, i64, *mut f32, *mut f32, *mut i64, *mut f32) -> bool,
-    >,
-
-    pub(crate) voicevox_user_dict_word_make:
-        Symbol<'lib, unsafe extern "C" fn(*const c_char, *const c_char) -> VoicevoxUserDictWord>,
-    pub(crate) voicevox_user_dict_new:
-        Symbol<'lib, unsafe extern "C" fn() -> *mut VoicevoxUserDict>,
-    pub(crate) voicevox_user_dict_load: Symbol<
-        'lib,
-        unsafe extern "C" fn(*const VoicevoxUserDict, *const c_char) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_user_dict_add_word: Symbol<
-        'lib,
-        unsafe extern "C" fn(
-            *const VoicevoxUserDict,
-            *const VoicevoxUserDictWord,
-            *mut [u8; 16],
-        ) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_user_dict_update_word: Symbol<
-        'lib,
-        unsafe extern "C" fn(
-            *const VoicevoxUserDict,
-            *const [u8; 16],
-            *const VoicevoxUserDictWord,
-        ) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_user_dict_remove_word: Symbol<
-        'lib,
-        unsafe extern "C" fn(*const VoicevoxUserDict, *const [u8; 16]) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_user_dict_to_json: Symbol<
-        'lib,
-        unsafe extern "C" fn(*const VoicevoxUserDict, *mut *mut c_char) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_user_dict_import: Symbol<
-        'lib,
-        unsafe extern "C" fn(
-            *const VoicevoxUserDict,
-            *const VoicevoxUserDict,
-        ) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_user_dict_save: Symbol<
-        'lib,
-        unsafe extern "C" fn(*const VoicevoxUserDict, *const c_char) -> VoicevoxResultCode,
-    >,
-    pub(crate) voicevox_user_dict_delete:
-        Symbol<'lib, unsafe extern "C" fn(*mut VoicevoxUserDict) -> VoicevoxResultCode>,
-}
-
-impl<'lib> Symbols<'lib> {
-    pub(crate) unsafe fn new(lib: &'lib Library) -> Result<Self, libloading::Error> {
-        macro_rules! new(($($name:ident),* $(,)?) => {
-            Self {
-                $(
-                    $name: lib.get(stringify!($name).as_ref())?,
-                )*
-            }
-        });
-
-        Ok(new!(
-            voicevox_open_jtalk_rc_new,
-            voicevox_open_jtalk_rc_use_user_dict,
-            voicevox_open_jtalk_rc_delete,
-            voicevox_make_default_initialize_options,
-            voicevox_get_version,
-            voicevox_voice_model_new_from_path,
-            voicevox_voice_model_id,
-            voicevox_voice_model_get_metas_json,
-            voicevox_voice_model_delete,
-            voicevox_synthesizer_new,
-            voicevox_synthesizer_delete,
-            voicevox_synthesizer_load_voice_model,
-            voicevox_synthesizer_unload_voice_model,
-            voicevox_synthesizer_is_gpu_mode,
-            voicevox_synthesizer_is_loaded_voice_model,
-            voicevox_synthesizer_create_metas_json,
-            voicevox_create_supported_devices_json,
-            voicevox_synthesizer_create_audio_query_from_kana,
-            voicevox_synthesizer_create_audio_query,
-            voicevox_make_default_synthesis_options,
-            voicevox_synthesizer_synthesis,
-            voicevox_make_default_tts_options,
-            voicevox_synthesizer_tts_from_kana,
-            voicevox_synthesizer_tts,
-            voicevox_json_free,
-            voicevox_wav_free,
-            voicevox_error_result_to_message,
-            initialize,
-            load_model,
-            is_model_loaded,
-            finalize,
-            metas,
-            last_error_message,
-            supported_devices,
-            yukarin_s_forward,
-            yukarin_sa_forward,
-            decode_forward,
-            voicevox_user_dict_word_make,
-            voicevox_user_dict_new,
-            voicevox_user_dict_load,
-            voicevox_user_dict_add_word,
-            voicevox_user_dict_update_word,
-            voicevox_user_dict_remove_word,
-            voicevox_user_dict_to_json,
-            voicevox_user_dict_import,
-            voicevox_user_dict_save,
-            voicevox_user_dict_delete,
-        ))
-    }
-}
-
-type OpenJtalkRc = c_void;
-type VoicevoxVoiceModel = c_void;
-type VoicevoxVoiceModelId = *const c_char;
-type VoicevoxSynthesizer = c_void;
-type VoicevoxStyleId = u32;
-
-#[repr(i32)]
-#[derive(Debug, PartialEq, Eq, Clone, Copy, EnumIter)]
-#[allow(non_camel_case_types)]
-pub(crate) enum VoicevoxResultCode {
-    VOICEVOX_RESULT_OK = 0,
-    VOICEVOX_RESULT_NOT_LOADED_OPENJTALK_DICT_ERROR = 1,
-    VOICEVOX_RESULT_GET_SUPPORTED_DEVICES_ERROR = 3,
-    VOICEVOX_RESULT_GPU_SUPPORT_ERROR = 4,
-    VOICEVOX_RESULT_STYLE_NOT_FOUND_ERROR = 6,
-    VOICEVOX_RESULT_MODEL_NOT_FOUND_ERROR = 7,
-    VOICEVOX_RESULT_INFERENCE_ERROR = 8,
-    VOICEVOX_RESULT_EXTRACT_FULL_CONTEXT_LABEL_ERROR = 11,
-    VOICEVOX_RESULT_INVALID_UTF8_INPUT_ERROR = 12,
-    VOICEVOX_RESULT_PARSE_KANA_ERROR = 13,
-    VOICEVOX_RESULT_INVALID_AUDIO_QUERY_ERROR = 14,
-    VOICEVOX_RESULT_INVALID_ACCENT_PHRASE_ERROR = 15,
-    VOICEVOX_RESULT_OPEN_ZIP_FILE_ERROR = 16,
-    VOICEVOX_RESULT_READ_ZIP_ENTRY_ERROR = 17,
-    VOICEVOX_RESULT_MODEL_ALREADY_LOADED_ERROR = 18,
-    VOICEVOX_RESULT_STYLE_ALREADY_LOADED_ERROR = 26,
-    VOICEVOX_RESULT_INVALID_MODEL_DATA_ERROR = 27,
-    VOICEVOX_RESULT_LOAD_USER_DICT_ERROR = 20,
-    VOICEVOX_RESULT_SAVE_USER_DICT_ERROR = 21,
-    VOICEVOX_RESULT_USER_DICT_WORD_NOT_FOUND_ERROR = 22,
-    VOICEVOX_RESULT_USE_USER_DICT_ERROR = 23,
-    VOICEVOX_RESULT_INVALID_USER_DICT_WORD_ERROR = 24,
-    VOICEVOX_RESULT_INVALID_UUID_ERROR = 25,
-}
-
-#[repr(i32)]
-#[allow(non_camel_case_types)]
-pub(crate) enum VoicevoxAccelerationMode {
-    VOICEVOX_ACCELERATION_MODE_CPU = 1,
-}
-
-#[repr(C)]
-pub(crate) struct VoicevoxInitializeOptions {
-    pub(crate) acceleration_mode: VoicevoxAccelerationMode,
-    pub(crate) _cpu_num_threads: u16,
-}
-
-#[repr(C)]
-pub(crate) struct VoicevoxSynthesisOptions {
-    _enable_interrogative_upspeak: bool,
-}
-
-#[repr(C)]
-pub(crate) struct VoicevoxTtsOptions {
-    _enable_interrogative_upspeak: bool,
-}
-
-#[repr(C)]
-pub(crate) struct VoicevoxUserDict {
-    _private: [u8; 0],
-}
-
-#[repr(C)]
-pub(crate) struct VoicevoxUserDictWord {
-    pub(crate) surface: *const c_char,
-    pub(crate) pronunciation: *const c_char,
-    pub(crate) accent_type: usize,
-    pub(crate) word_type: VoicevoxUserDictWordType,
-    pub(crate) priority: u32,
-}
-
-#[repr(i32)]
-#[allow(non_camel_case_types)]
-pub(crate) enum VoicevoxUserDictWordType {
-    VOICEVOX_USER_DICT_WORD_TYPE_PROPER_NOUN = 0,
-}
diff --git a/crates/voicevox_core_c_api/tests/e2e/testcases/compatible_engine.rs b/crates/voicevox_core_c_api/tests/e2e/testcases/compatible_engine.rs
index 41968aa8f..c2fc211c2 100644
--- a/crates/voicevox_core_c_api/tests/e2e/testcases/compatible_engine.rs
+++ b/crates/voicevox_core_c_api/tests/e2e/testcases/compatible_engine.rs
@@ -8,12 +8,11 @@ use once_cell::sync::Lazy;
 use serde::{Deserialize, Serialize};
 use voicevox_core::SupportedDevices;
 
-use test_util::EXAMPLE_DATA;
+use test_util::{c_api::CApi, EXAMPLE_DATA};
 
 use crate::{
     assert_cdylib::{self, case, Utf8Output},
     float_assert, snapshots,
-    symbols::Symbols,
 };
 
 case!(TestCase);
@@ -23,43 +22,32 @@ struct TestCase;
 
 #[typetag::serde(name = "compatible_engine")]
 impl assert_cdylib::TestCase for TestCase {
-    unsafe fn exec(&self, lib: &Library) -> anyhow::Result<()> {
-        let Symbols {
-            initialize,
-            load_model,
-            is_model_loaded,
-            finalize,
-            metas,
-            supported_devices,
-            yukarin_s_forward,
-            yukarin_sa_forward,
-            decode_forward,
-            ..
-        } = Symbols::new(lib)?;
+    unsafe fn exec(&self, lib: Library) -> anyhow::Result<()> {
+        let lib = CApi::from_library(lib)?;
 
         let metas_json = {
-            let metas_json = metas();
+            let metas_json = lib.metas();
             let metas_json = CStr::from_ptr(metas_json).to_str()?;
             serde_json::to_string_pretty(&metas_json.parse::<serde_json::Value>()?).unwrap()
         };
 
         let supported_devices = {
-            let supported_devices = supported_devices();
+            let supported_devices = lib.supported_devices();
             CStr::from_ptr(supported_devices)
                 .to_str()?
                 .parse::<serde_json::Value>()?
         };
 
-        assert!(initialize(false, 0, false));
+        assert!(lib.initialize(false, 0, false));
 
-        assert!(!is_model_loaded(EXAMPLE_DATA.speaker_id));
-        assert!(load_model(EXAMPLE_DATA.speaker_id));
-        assert!(is_model_loaded(EXAMPLE_DATA.speaker_id));
+        assert!(!lib.is_model_loaded(EXAMPLE_DATA.speaker_id));
+        assert!(lib.load_model(EXAMPLE_DATA.speaker_id));
+        assert!(lib.is_model_loaded(EXAMPLE_DATA.speaker_id));
 
         // テスト用テキストは"t e s u t o"
         let phoneme_length = {
             let mut phoneme_length = [0.; 8];
-            assert!(yukarin_s_forward(
+            assert!(lib.yukarin_s_forward(
                 EXAMPLE_DATA.duration.length,
                 EXAMPLE_DATA.duration.phoneme_vector.as_ptr() as *mut i64,
                 &mut { EXAMPLE_DATA.speaker_id } as *mut i64,
@@ -70,7 +58,7 @@ impl assert_cdylib::TestCase for TestCase {
 
         let intonation_list = {
             let mut intonation_list = [0.; 5];
-            assert!(yukarin_sa_forward(
+            assert!(lib.yukarin_sa_forward(
                 EXAMPLE_DATA.intonation.length,
                 EXAMPLE_DATA.intonation.vowel_phoneme_vector.as_ptr() as *mut i64,
                 EXAMPLE_DATA.intonation.consonant_phoneme_vector.as_ptr() as *mut i64,
@@ -86,7 +74,7 @@ impl assert_cdylib::TestCase for TestCase {
 
         let wave = {
             let mut wave = vec![0.; 256 * EXAMPLE_DATA.decode.f0_length as usize];
-            assert!(decode_forward(
+            assert!(lib.decode_forward(
                 EXAMPLE_DATA.decode.f0_length,
                 EXAMPLE_DATA.decode.phoneme_size,
                 EXAMPLE_DATA.decode.f0_vector.as_ptr() as *mut f32,
@@ -108,7 +96,7 @@ impl assert_cdylib::TestCase for TestCase {
 
         assert!(wave.iter().copied().all(f32::is_normal));
 
-        finalize();
+        lib.finalize();
         Ok(())
     }
 
diff --git a/crates/voicevox_core_c_api/tests/e2e/testcases/compatible_engine_load_model_before_initialize.rs b/crates/voicevox_core_c_api/tests/e2e/testcases/compatible_engine_load_model_before_initialize.rs
index 4ea024a98..173e32f8c 100644
--- a/crates/voicevox_core_c_api/tests/e2e/testcases/compatible_engine_load_model_before_initialize.rs
+++ b/crates/voicevox_core_c_api/tests/e2e/testcases/compatible_engine_load_model_before_initialize.rs
@@ -6,11 +6,11 @@ use assert_cmd::assert::AssertResult;
 use libloading::Library;
 use once_cell::sync::Lazy;
 use serde::{Deserialize, Serialize};
+use test_util::c_api::CApi;
 
 use crate::{
     assert_cdylib::{self, case, Utf8Output},
     snapshots,
-    symbols::Symbols,
 };
 
 case!(TestCase);
@@ -20,15 +20,11 @@ struct TestCase;
 
 #[typetag::serde(name = "compatible_engine_load_model_before_initialize")]
 impl assert_cdylib::TestCase for TestCase {
-    unsafe fn exec(&self, lib: &Library) -> anyhow::Result<()> {
-        let Symbols {
-            load_model,
-            last_error_message,
-            ..
-        } = Symbols::new(lib)?;
-
-        assert!(!load_model(0));
-        let last_error_message = last_error_message();
+    unsafe fn exec(&self, lib: Library) -> anyhow::Result<()> {
+        let lib = CApi::from_library(lib)?;
+
+        assert!(!lib.load_model(0));
+        let last_error_message = lib.last_error_message();
         let last_error_message = CStr::from_ptr(last_error_message).to_str()?;
 
         std::assert_eq!(SNAPSHOTS.last_error_message, last_error_message);
diff --git a/crates/voicevox_core_c_api/tests/e2e/testcases/global_info.rs b/crates/voicevox_core_c_api/tests/e2e/testcases/global_info.rs
index 200477b02..c6ea390ed 100644
--- a/crates/voicevox_core_c_api/tests/e2e/testcases/global_info.rs
+++ b/crates/voicevox_core_c_api/tests/e2e/testcases/global_info.rs
@@ -5,13 +5,12 @@ use libloading::Library;
 use once_cell::sync::Lazy;
 use serde::{Deserialize, Serialize};
 use serde_with::{serde_as, DisplayFromStr};
-use strum::IntoEnumIterator;
+use test_util::c_api::{self, CApi, VoicevoxResultCode};
 use voicevox_core::SupportedDevices;
 
 use crate::{
     assert_cdylib::{self, case, Utf8Output},
     snapshots,
-    symbols::{Symbols, VoicevoxResultCode},
 };
 
 case!(TestCase);
@@ -21,25 +20,17 @@ struct TestCase;
 
 #[typetag::serde(name = "global_info")]
 impl assert_cdylib::TestCase for TestCase {
-    unsafe fn exec(&self, lib: &Library) -> anyhow::Result<()> {
-        let Symbols {
-            voicevox_get_version,
-            voicevox_create_supported_devices_json,
-            voicevox_error_result_to_message,
-            voicevox_json_free,
-            ..
-        } = Symbols::new(lib)?;
+    unsafe fn exec(&self, lib: Library) -> anyhow::Result<()> {
+        let lib = CApi::from_library(lib)?;
 
         std::assert_eq!(
             env!("CARGO_PKG_VERSION"),
-            CStr::from_ptr(voicevox_get_version()).to_str()?,
+            CStr::from_ptr(lib.voicevox_get_version()).to_str()?,
         );
 
         {
             let mut supported_devices = MaybeUninit::uninit();
-            assert_ok(voicevox_create_supported_devices_json(
-                supported_devices.as_mut_ptr(),
-            ));
+            assert_ok(lib.voicevox_create_supported_devices_json(supported_devices.as_mut_ptr()));
             let supported_devices = supported_devices.assume_init();
             std::assert_eq!(
                 SupportedDevices::create()?.to_json(),
@@ -47,21 +38,45 @@ impl assert_cdylib::TestCase for TestCase {
                     .to_str()?
                     .parse::<serde_json::Value>()?,
             );
-            voicevox_json_free(supported_devices);
+            lib.voicevox_json_free(supported_devices);
         }
 
-        for result_code in VoicevoxResultCode::iter() {
+        for result_code in [
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_OK,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_NOT_LOADED_OPENJTALK_DICT_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_GET_SUPPORTED_DEVICES_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_GPU_SUPPORT_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_STYLE_NOT_FOUND_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_MODEL_NOT_FOUND_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_INFERENCE_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_EXTRACT_FULL_CONTEXT_LABEL_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_INVALID_UTF8_INPUT_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_PARSE_KANA_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_INVALID_AUDIO_QUERY_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_INVALID_ACCENT_PHRASE_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_OPEN_ZIP_FILE_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_READ_ZIP_ENTRY_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_MODEL_ALREADY_LOADED_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_STYLE_ALREADY_LOADED_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_INVALID_MODEL_DATA_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_LOAD_USER_DICT_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_SAVE_USER_DICT_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_USER_DICT_WORD_NOT_FOUND_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_USE_USER_DICT_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_INVALID_USER_DICT_WORD_ERROR,
+            c_api::VoicevoxResultCode_VOICEVOX_RESULT_INVALID_UUID_ERROR,
+        ] {
             std::assert_eq!(
-                SNAPSHOTS.result_messages[&(result_code as _)],
+                SNAPSHOTS.result_messages[&result_code],
                 str::from_utf8(
-                    CStr::from_ptr(voicevox_error_result_to_message(result_code)).to_bytes()
+                    CStr::from_ptr(lib.voicevox_error_result_to_message(result_code)).to_bytes()
                 )?,
             );
         }
         return Ok(());
 
         fn assert_ok(result_code: VoicevoxResultCode) {
-            std::assert_eq!(VoicevoxResultCode::VOICEVOX_RESULT_OK, result_code);
+            std::assert_eq!(c_api::VoicevoxResultCode_VOICEVOX_RESULT_OK, result_code);
         }
     }
 
diff --git a/crates/voicevox_core_c_api/tests/e2e/testcases/simple_tts.rs b/crates/voicevox_core_c_api/tests/e2e/testcases/simple_tts.rs
index 9631249fa..4ac4030e1 100644
--- a/crates/voicevox_core_c_api/tests/e2e/testcases/simple_tts.rs
+++ b/crates/voicevox_core_c_api/tests/e2e/testcases/simple_tts.rs
@@ -1,16 +1,17 @@
 use std::{collections::HashMap, ffi::CString, mem::MaybeUninit};
 
 use assert_cmd::assert::AssertResult;
-use cstr::cstr;
 use libloading::Library;
 use once_cell::sync::Lazy;
 use serde::{Deserialize, Serialize};
-use test_util::OPEN_JTALK_DIC_DIR;
+use test_util::{
+    c_api::{self, CApi, VoicevoxInitializeOptions, VoicevoxResultCode},
+    OPEN_JTALK_DIC_DIR,
+};
 
 use crate::{
     assert_cdylib::{self, case, Utf8Output},
     snapshots,
-    symbols::{Symbols, VoicevoxAccelerationMode, VoicevoxInitializeOptions, VoicevoxResultCode},
 };
 
 case!(TestCase {
@@ -24,26 +25,13 @@ struct TestCase {
 
 #[typetag::serde(name = "simple_tts")]
 impl assert_cdylib::TestCase for TestCase {
-    unsafe fn exec(&self, lib: &Library) -> anyhow::Result<()> {
-        let Symbols {
-            voicevox_open_jtalk_rc_new,
-            voicevox_open_jtalk_rc_delete,
-            voicevox_make_default_initialize_options,
-            voicevox_voice_model_new_from_path,
-            voicevox_voice_model_delete,
-            voicevox_synthesizer_new,
-            voicevox_synthesizer_delete,
-            voicevox_synthesizer_load_voice_model,
-            voicevox_make_default_tts_options,
-            voicevox_synthesizer_tts,
-            voicevox_wav_free,
-            ..
-        } = Symbols::new(lib)?;
+    unsafe fn exec(&self, lib: Library) -> anyhow::Result<()> {
+        let lib = CApi::from_library(lib)?;
 
         let model = {
             let mut model = MaybeUninit::uninit();
-            assert_ok(voicevox_voice_model_new_from_path(
-                cstr!("../../model/sample.vvm").as_ptr(),
+            assert_ok(lib.voicevox_voice_model_new_from_path(
+                c_api::SAMPLE_VOICE_MODEL_FILE_PATH.as_ptr(),
                 model.as_mut_ptr(),
             ));
             model.assume_init()
@@ -52,37 +40,37 @@ impl assert_cdylib::TestCase for TestCase {
         let openjtalk = {
             let mut openjtalk = MaybeUninit::uninit();
             let open_jtalk_dic_dir = CString::new(OPEN_JTALK_DIC_DIR).unwrap();
-            assert_ok(voicevox_open_jtalk_rc_new(
-                open_jtalk_dic_dir.as_ptr(),
-                openjtalk.as_mut_ptr(),
-            ));
+            assert_ok(
+                lib.voicevox_open_jtalk_rc_new(open_jtalk_dic_dir.as_ptr(), openjtalk.as_mut_ptr()),
+            );
             openjtalk.assume_init()
         };
 
         let synthesizer = {
             let mut synthesizer = MaybeUninit::uninit();
-            assert_ok(voicevox_synthesizer_new(
+            assert_ok(lib.voicevox_synthesizer_new(
                 openjtalk,
                 VoicevoxInitializeOptions {
-                    acceleration_mode: VoicevoxAccelerationMode::VOICEVOX_ACCELERATION_MODE_CPU,
-                    ..voicevox_make_default_initialize_options()
+                    acceleration_mode:
+                        c_api::VoicevoxAccelerationMode_VOICEVOX_ACCELERATION_MODE_CPU,
+                    ..lib.voicevox_make_default_initialize_options()
                 },
                 synthesizer.as_mut_ptr(),
             ));
             synthesizer.assume_init()
         };
 
-        assert_ok(voicevox_synthesizer_load_voice_model(synthesizer, model));
+        assert_ok(lib.voicevox_synthesizer_load_voice_model(synthesizer, model));
 
         let (wav_length, wav) = {
             let mut wav_length = MaybeUninit::uninit();
             let mut wav = MaybeUninit::uninit();
             let text = CString::new(&*self.text).unwrap();
-            assert_ok(voicevox_synthesizer_tts(
+            assert_ok(lib.voicevox_synthesizer_tts(
                 synthesizer,
                 text.as_ptr(),
                 STYLE_ID,
-                voicevox_make_default_tts_options(),
+                lib.voicevox_make_default_tts_options(),
                 wav_length.as_mut_ptr(),
                 wav.as_mut_ptr(),
             ));
@@ -91,17 +79,17 @@ impl assert_cdylib::TestCase for TestCase {
 
         std::assert_eq!(SNAPSHOTS.output[&self.text].wav_length, wav_length);
 
-        voicevox_voice_model_delete(model);
-        voicevox_open_jtalk_rc_delete(openjtalk);
-        voicevox_synthesizer_delete(synthesizer);
-        voicevox_wav_free(wav);
+        lib.voicevox_voice_model_delete(model);
+        lib.voicevox_open_jtalk_rc_delete(openjtalk);
+        lib.voicevox_synthesizer_delete(synthesizer);
+        lib.voicevox_wav_free(wav);
 
         return Ok(());
 
         const STYLE_ID: u32 = 0;
 
         fn assert_ok(result_code: VoicevoxResultCode) {
-            std::assert_eq!(VoicevoxResultCode::VOICEVOX_RESULT_OK, result_code);
+            std::assert_eq!(c_api::VoicevoxResultCode_VOICEVOX_RESULT_OK, result_code);
         }
     }
 
diff --git a/crates/voicevox_core_c_api/tests/e2e/testcases/synthesizer_new_output_json.rs b/crates/voicevox_core_c_api/tests/e2e/testcases/synthesizer_new_output_json.rs
index a836a409c..c27bd4703 100644
--- a/crates/voicevox_core_c_api/tests/e2e/testcases/synthesizer_new_output_json.rs
+++ b/crates/voicevox_core_c_api/tests/e2e/testcases/synthesizer_new_output_json.rs
@@ -4,17 +4,18 @@ use std::{
 };
 
 use assert_cmd::assert::AssertResult;
-use cstr::cstr;
 use libloading::Library;
 use once_cell::sync::Lazy;
 use serde::{Deserialize, Serialize};
 
-use test_util::OPEN_JTALK_DIC_DIR;
+use test_util::{
+    c_api::{self, CApi, VoicevoxInitializeOptions, VoicevoxResultCode},
+    OPEN_JTALK_DIC_DIR,
+};
 
 use crate::{
     assert_cdylib::{self, case, Utf8Output},
     snapshots,
-    symbols::{Symbols, VoicevoxAccelerationMode, VoicevoxInitializeOptions, VoicevoxResultCode},
 };
 
 case!(TestCase);
@@ -24,37 +25,26 @@ struct TestCase;
 
 #[typetag::serde(name = "synthesizer_new_output_json")]
 impl assert_cdylib::TestCase for TestCase {
-    unsafe fn exec(&self, lib: &Library) -> anyhow::Result<()> {
-        let Symbols {
-            voicevox_make_default_initialize_options,
-            voicevox_voice_model_new_from_path,
-            voicevox_open_jtalk_rc_new,
-            voicevox_open_jtalk_rc_delete,
-            voicevox_synthesizer_new,
-            voicevox_synthesizer_delete,
-            voicevox_synthesizer_create_metas_json,
-            voicevox_synthesizer_load_voice_model,
-            voicevox_json_free,
-            ..
-        } = Symbols::new(lib)?;
+    unsafe fn exec(&self, lib: Library) -> anyhow::Result<()> {
+        let lib = CApi::from_library(lib)?;
 
         let openjtalk = {
             let mut openjtalk = MaybeUninit::uninit();
             let open_jtalk_dic_dir = CString::new(OPEN_JTALK_DIC_DIR).unwrap();
-            assert_ok(voicevox_open_jtalk_rc_new(
-                open_jtalk_dic_dir.as_ptr(),
-                openjtalk.as_mut_ptr(),
-            ));
+            assert_ok(
+                lib.voicevox_open_jtalk_rc_new(open_jtalk_dic_dir.as_ptr(), openjtalk.as_mut_ptr()),
+            );
             openjtalk.assume_init()
         };
 
         let synthesizer = {
             let mut synthesizer = MaybeUninit::uninit();
-            assert_ok(voicevox_synthesizer_new(
+            assert_ok(lib.voicevox_synthesizer_new(
                 openjtalk,
                 VoicevoxInitializeOptions {
-                    acceleration_mode: VoicevoxAccelerationMode::VOICEVOX_ACCELERATION_MODE_CPU,
-                    ..voicevox_make_default_initialize_options()
+                    acceleration_mode:
+                        c_api::VoicevoxAccelerationMode_VOICEVOX_ACCELERATION_MODE_CPU,
+                    ..lib.voicevox_make_default_initialize_options()
                 },
                 synthesizer.as_mut_ptr(),
             ));
@@ -63,32 +53,32 @@ impl assert_cdylib::TestCase for TestCase {
 
         let model = {
             let mut model = MaybeUninit::uninit();
-            assert_ok(voicevox_voice_model_new_from_path(
-                cstr!("../../model/sample.vvm").as_ptr(),
+            assert_ok(lib.voicevox_voice_model_new_from_path(
+                c_api::SAMPLE_VOICE_MODEL_FILE_PATH.as_ptr(),
                 model.as_mut_ptr(),
             ));
             model.assume_init()
         };
 
-        assert_ok(voicevox_synthesizer_load_voice_model(synthesizer, model));
+        assert_ok(lib.voicevox_synthesizer_load_voice_model(synthesizer, model));
 
         let metas_json = {
-            let raw = voicevox_synthesizer_create_metas_json(synthesizer);
+            let raw = lib.voicevox_synthesizer_create_metas_json(synthesizer);
             let metas_json = &CStr::from_ptr(raw).to_str()?.parse::<serde_json::Value>()?;
             let metas_json = serde_json::to_string_pretty(metas_json).unwrap();
-            voicevox_json_free(raw);
+            lib.voicevox_json_free(raw);
             metas_json
         };
 
         std::assert_eq!(SNAPSHOTS.metas, metas_json);
 
-        voicevox_open_jtalk_rc_delete(openjtalk);
-        voicevox_synthesizer_delete(synthesizer);
+        lib.voicevox_open_jtalk_rc_delete(openjtalk);
+        lib.voicevox_synthesizer_delete(synthesizer);
 
         return Ok(());
 
         fn assert_ok(result_code: VoicevoxResultCode) {
-            std::assert_eq!(VoicevoxResultCode::VOICEVOX_RESULT_OK, result_code);
+            std::assert_eq!(c_api::VoicevoxResultCode_VOICEVOX_RESULT_OK, result_code);
         }
     }
 
diff --git a/crates/voicevox_core_c_api/tests/e2e/testcases/tts_via_audio_query.rs b/crates/voicevox_core_c_api/tests/e2e/testcases/tts_via_audio_query.rs
index 6cfe7994e..d380b71b2 100644
--- a/crates/voicevox_core_c_api/tests/e2e/testcases/tts_via_audio_query.rs
+++ b/crates/voicevox_core_c_api/tests/e2e/testcases/tts_via_audio_query.rs
@@ -1,16 +1,17 @@
 use std::{collections::HashMap, ffi::CString, mem::MaybeUninit};
 
 use assert_cmd::assert::AssertResult;
-use cstr::cstr;
 use libloading::Library;
 use once_cell::sync::Lazy;
 use serde::{Deserialize, Serialize};
-use test_util::OPEN_JTALK_DIC_DIR;
+use test_util::{
+    c_api::{self, CApi, VoicevoxInitializeOptions, VoicevoxResultCode},
+    OPEN_JTALK_DIC_DIR,
+};
 
 use crate::{
     assert_cdylib::{self, case, Utf8Output},
     snapshots,
-    symbols::{Symbols, VoicevoxAccelerationMode, VoicevoxInitializeOptions, VoicevoxResultCode},
 };
 
 case!(TestCase {
@@ -24,28 +25,13 @@ struct TestCase {
 
 #[typetag::serde(name = "tts_via_audio_query")]
 impl assert_cdylib::TestCase for TestCase {
-    unsafe fn exec(&self, lib: &Library) -> anyhow::Result<()> {
-        let Symbols {
-            voicevox_open_jtalk_rc_new,
-            voicevox_open_jtalk_rc_delete,
-            voicevox_make_default_initialize_options,
-            voicevox_voice_model_new_from_path,
-            voicevox_voice_model_delete,
-            voicevox_synthesizer_new,
-            voicevox_synthesizer_delete,
-            voicevox_synthesizer_load_voice_model,
-            voicevox_synthesizer_create_audio_query,
-            voicevox_make_default_synthesis_options,
-            voicevox_synthesizer_synthesis,
-            voicevox_json_free,
-            voicevox_wav_free,
-            ..
-        } = Symbols::new(lib)?;
+    unsafe fn exec(&self, lib: Library) -> anyhow::Result<()> {
+        let lib = CApi::from_library(lib)?;
 
         let model = {
             let mut model = MaybeUninit::uninit();
-            assert_ok(voicevox_voice_model_new_from_path(
-                cstr!("../../model/sample.vvm").as_ptr(),
+            assert_ok(lib.voicevox_voice_model_new_from_path(
+                c_api::SAMPLE_VOICE_MODEL_FILE_PATH.as_ptr(),
                 model.as_mut_ptr(),
             ));
             model.assume_init()
@@ -54,32 +40,32 @@ impl assert_cdylib::TestCase for TestCase {
         let openjtalk = {
             let mut openjtalk = MaybeUninit::uninit();
             let open_jtalk_dic_dir = CString::new(OPEN_JTALK_DIC_DIR).unwrap();
-            assert_ok(voicevox_open_jtalk_rc_new(
-                open_jtalk_dic_dir.as_ptr(),
-                openjtalk.as_mut_ptr(),
-            ));
+            assert_ok(
+                lib.voicevox_open_jtalk_rc_new(open_jtalk_dic_dir.as_ptr(), openjtalk.as_mut_ptr()),
+            );
             openjtalk.assume_init()
         };
 
         let synthesizer = {
             let mut synthesizer = MaybeUninit::uninit();
-            assert_ok(voicevox_synthesizer_new(
+            assert_ok(lib.voicevox_synthesizer_new(
                 openjtalk,
                 VoicevoxInitializeOptions {
-                    acceleration_mode: VoicevoxAccelerationMode::VOICEVOX_ACCELERATION_MODE_CPU,
-                    ..voicevox_make_default_initialize_options()
+                    acceleration_mode:
+                        c_api::VoicevoxAccelerationMode_VOICEVOX_ACCELERATION_MODE_CPU,
+                    ..lib.voicevox_make_default_initialize_options()
                 },
                 synthesizer.as_mut_ptr(),
             ));
             synthesizer.assume_init()
         };
 
-        assert_ok(voicevox_synthesizer_load_voice_model(synthesizer, model));
+        assert_ok(lib.voicevox_synthesizer_load_voice_model(synthesizer, model));
 
         let audio_query = {
             let mut audio_query = MaybeUninit::uninit();
             let text = CString::new(&*self.text).unwrap();
-            assert_ok(voicevox_synthesizer_create_audio_query(
+            assert_ok(lib.voicevox_synthesizer_create_audio_query(
                 synthesizer,
                 text.as_ptr(),
                 STYLE_ID,
@@ -91,11 +77,11 @@ impl assert_cdylib::TestCase for TestCase {
         let (wav_length, wav) = {
             let mut wav_length = MaybeUninit::uninit();
             let mut wav = MaybeUninit::uninit();
-            assert_ok(voicevox_synthesizer_synthesis(
+            assert_ok(lib.voicevox_synthesizer_synthesis(
                 synthesizer,
                 audio_query,
                 STYLE_ID,
-                voicevox_make_default_synthesis_options(),
+                lib.voicevox_make_default_synthesis_options(),
                 wav_length.as_mut_ptr(),
                 wav.as_mut_ptr(),
             ));
@@ -104,18 +90,18 @@ impl assert_cdylib::TestCase for TestCase {
 
         std::assert_eq!(SNAPSHOTS.output[&self.text].wav_length, wav_length);
 
-        voicevox_voice_model_delete(model);
-        voicevox_open_jtalk_rc_delete(openjtalk);
-        voicevox_synthesizer_delete(synthesizer);
-        voicevox_json_free(audio_query);
-        voicevox_wav_free(wav);
+        lib.voicevox_voice_model_delete(model);
+        lib.voicevox_open_jtalk_rc_delete(openjtalk);
+        lib.voicevox_synthesizer_delete(synthesizer);
+        lib.voicevox_json_free(audio_query);
+        lib.voicevox_wav_free(wav);
 
         return Ok(());
 
         const STYLE_ID: u32 = 0;
 
         fn assert_ok(result_code: VoicevoxResultCode) {
-            std::assert_eq!(VoicevoxResultCode::VOICEVOX_RESULT_OK, result_code);
+            std::assert_eq!(c_api::VoicevoxResultCode_VOICEVOX_RESULT_OK, result_code);
         }
     }
 
diff --git a/crates/voicevox_core_c_api/tests/e2e/testcases/user_dict_load.rs b/crates/voicevox_core_c_api/tests/e2e/testcases/user_dict_load.rs
index 7c2e13afe..2e6875e97 100644
--- a/crates/voicevox_core_c_api/tests/e2e/testcases/user_dict_load.rs
+++ b/crates/voicevox_core_c_api/tests/e2e/testcases/user_dict_load.rs
@@ -1,7 +1,6 @@
 // ユーザー辞書の登録によって読みが変化することを確認するテスト。
 // 辞書ロード前後でAudioQueryのkanaが変化するかどうかで確認する。
 
-use crate::symbols::{VoicevoxInitializeOptions, VoicevoxResultCode};
 use assert_cmd::assert::AssertResult;
 use once_cell::sync::Lazy;
 use std::ffi::{CStr, CString};
@@ -11,11 +10,11 @@ use test_util::OPEN_JTALK_DIC_DIR;
 use cstr::cstr;
 use libloading::Library;
 use serde::{Deserialize, Serialize};
+use test_util::c_api::{self, CApi, VoicevoxInitializeOptions, VoicevoxResultCode};
 
 use crate::{
     assert_cdylib::{self, case, Utf8Output},
     snapshots,
-    symbols::{Symbols, VoicevoxAccelerationMode, VoicevoxUserDictWordType},
 };
 
 case!(TestCase);
@@ -25,46 +24,31 @@ struct TestCase;
 
 #[typetag::serde(name = "user_dict_load")]
 impl assert_cdylib::TestCase for TestCase {
-    unsafe fn exec(&self, lib: &Library) -> anyhow::Result<()> {
-        let Symbols {
-            voicevox_user_dict_word_make,
-            voicevox_user_dict_new,
-            voicevox_user_dict_add_word,
-            voicevox_user_dict_delete,
-            voicevox_make_default_initialize_options,
-            voicevox_open_jtalk_rc_new,
-            voicevox_open_jtalk_rc_use_user_dict,
-            voicevox_open_jtalk_rc_delete,
-            voicevox_voice_model_new_from_path,
-            voicevox_voice_model_delete,
-            voicevox_synthesizer_new,
-            voicevox_synthesizer_delete,
-            voicevox_synthesizer_load_voice_model,
-            voicevox_synthesizer_create_audio_query,
-            ..
-        } = Symbols::new(lib)?;
-
-        let dict = voicevox_user_dict_new();
+    unsafe fn exec(&self, lib: Library) -> anyhow::Result<()> {
+        let lib = CApi::from_library(lib)?;
+
+        let dict = lib.voicevox_user_dict_new();
 
         let mut word_uuid = [0u8; 16];
 
         let word = {
-            let mut word = voicevox_user_dict_word_make(
+            let mut word = lib.voicevox_user_dict_word_make(
                 cstr!("this_word_should_not_exist_in_default_dictionary").as_ptr(),
                 cstr!("アイウエオ").as_ptr(),
             );
-            word.word_type = VoicevoxUserDictWordType::VOICEVOX_USER_DICT_WORD_TYPE_PROPER_NOUN;
+            word.word_type =
+                c_api::VoicevoxUserDictWordType_VOICEVOX_USER_DICT_WORD_TYPE_PROPER_NOUN;
             word.priority = 10;
 
             word
         };
 
-        assert_ok(voicevox_user_dict_add_word(dict, &word, &mut word_uuid));
+        assert_ok(lib.voicevox_user_dict_add_word(dict, &word, &mut word_uuid));
 
         let model = {
             let mut model = MaybeUninit::uninit();
-            assert_ok(voicevox_voice_model_new_from_path(
-                cstr!("../../model/sample.vvm").as_ptr(),
+            assert_ok(lib.voicevox_voice_model_new_from_path(
+                c_api::SAMPLE_VOICE_MODEL_FILE_PATH.as_ptr(),
                 model.as_mut_ptr(),
             ));
             model.assume_init()
@@ -73,30 +57,30 @@ impl assert_cdylib::TestCase for TestCase {
         let openjtalk = {
             let mut openjtalk = MaybeUninit::uninit();
             let open_jtalk_dic_dir = CString::new(OPEN_JTALK_DIC_DIR).unwrap();
-            assert_ok(voicevox_open_jtalk_rc_new(
-                open_jtalk_dic_dir.as_ptr(),
-                openjtalk.as_mut_ptr(),
-            ));
+            assert_ok(
+                lib.voicevox_open_jtalk_rc_new(open_jtalk_dic_dir.as_ptr(), openjtalk.as_mut_ptr()),
+            );
             openjtalk.assume_init()
         };
 
         let synthesizer = {
             let mut synthesizer = MaybeUninit::uninit();
-            assert_ok(voicevox_synthesizer_new(
+            assert_ok(lib.voicevox_synthesizer_new(
                 openjtalk,
                 VoicevoxInitializeOptions {
-                    acceleration_mode: VoicevoxAccelerationMode::VOICEVOX_ACCELERATION_MODE_CPU,
-                    ..voicevox_make_default_initialize_options()
+                    acceleration_mode:
+                        c_api::VoicevoxAccelerationMode_VOICEVOX_ACCELERATION_MODE_CPU,
+                    ..lib.voicevox_make_default_initialize_options()
                 },
                 synthesizer.as_mut_ptr(),
             ));
             synthesizer.assume_init()
         };
 
-        assert_ok(voicevox_synthesizer_load_voice_model(synthesizer, model));
+        assert_ok(lib.voicevox_synthesizer_load_voice_model(synthesizer, model));
 
         let mut audio_query_without_dict = std::ptr::null_mut();
-        assert_ok(voicevox_synthesizer_create_audio_query(
+        assert_ok(lib.voicevox_synthesizer_create_audio_query(
             synthesizer,
             cstr!("this_word_should_not_exist_in_default_dictionary").as_ptr(),
             STYLE_ID,
@@ -106,10 +90,10 @@ impl assert_cdylib::TestCase for TestCase {
             CStr::from_ptr(audio_query_without_dict).to_str()?,
         )?;
 
-        assert_ok(voicevox_open_jtalk_rc_use_user_dict(openjtalk, dict));
+        assert_ok(lib.voicevox_open_jtalk_rc_use_user_dict(openjtalk, dict));
 
         let mut audio_query_with_dict = std::ptr::null_mut();
-        assert_ok(voicevox_synthesizer_create_audio_query(
+        assert_ok(lib.voicevox_synthesizer_create_audio_query(
             synthesizer,
             cstr!("this_word_should_not_exist_in_default_dictionary").as_ptr(),
             STYLE_ID,
@@ -125,15 +109,15 @@ impl assert_cdylib::TestCase for TestCase {
             audio_query_with_dict.get("kana")
         );
 
-        voicevox_voice_model_delete(model);
-        voicevox_open_jtalk_rc_delete(openjtalk);
-        voicevox_synthesizer_delete(synthesizer);
-        voicevox_user_dict_delete(dict);
+        lib.voicevox_voice_model_delete(model);
+        lib.voicevox_open_jtalk_rc_delete(openjtalk);
+        lib.voicevox_synthesizer_delete(synthesizer);
+        lib.voicevox_user_dict_delete(dict);
 
         return Ok(());
 
         fn assert_ok(result_code: VoicevoxResultCode) {
-            std::assert_eq!(VoicevoxResultCode::VOICEVOX_RESULT_OK, result_code);
+            std::assert_eq!(c_api::VoicevoxResultCode_VOICEVOX_RESULT_OK, result_code);
         }
         const STYLE_ID: u32 = 0;
     }
diff --git a/crates/voicevox_core_c_api/tests/e2e/testcases/user_dict_manipulate.rs b/crates/voicevox_core_c_api/tests/e2e/testcases/user_dict_manipulate.rs
index 15b80686f..fd3d575e3 100644
--- a/crates/voicevox_core_c_api/tests/e2e/testcases/user_dict_manipulate.rs
+++ b/crates/voicevox_core_c_api/tests/e2e/testcases/user_dict_manipulate.rs
@@ -12,11 +12,11 @@ use uuid::Uuid;
 use cstr::cstr;
 use libloading::Library;
 use serde::{Deserialize, Serialize};
+use test_util::c_api::{self, CApi, VoicevoxResultCode, VoicevoxUserDict, VoicevoxUserDictWord};
 
 use crate::{
     assert_cdylib::{self, case, Utf8Output},
     snapshots,
-    symbols::{Symbols, VoicevoxResultCode, VoicevoxUserDict, VoicevoxUserDictWord},
 };
 
 case!(TestCase);
@@ -26,35 +26,19 @@ struct TestCase;
 
 #[typetag::serde(name = "user_dict_manipulate")]
 impl assert_cdylib::TestCase for TestCase {
-    unsafe fn exec(&self, lib: &Library) -> anyhow::Result<()> {
-        let Symbols {
-            voicevox_user_dict_word_make,
-            voicevox_user_dict_new,
-            voicevox_user_dict_add_word,
-            voicevox_user_dict_update_word,
-            voicevox_user_dict_remove_word,
-            voicevox_user_dict_to_json,
-            voicevox_user_dict_import,
-            voicevox_user_dict_load,
-            voicevox_user_dict_save,
-            voicevox_user_dict_delete,
-            voicevox_json_free,
-            ..
-        } = Symbols::new(lib)?;
+    unsafe fn exec(&self, lib: Library) -> anyhow::Result<()> {
+        let lib = CApi::from_library(lib)?;
 
         let get_json = |dict: &*mut VoicevoxUserDict| -> String {
             let mut json = MaybeUninit::uninit();
-            assert_ok(voicevox_user_dict_to_json(
-                (*dict) as *const _,
-                json.as_mut_ptr(),
-            ));
+            assert_ok(lib.voicevox_user_dict_to_json((*dict) as *const _, json.as_mut_ptr()));
 
             let ret = CStr::from_ptr(json.assume_init())
                 .to_str()
                 .unwrap()
                 .to_string();
 
-            voicevox_json_free(json.assume_init());
+            lib.voicevox_json_free(json.assume_init());
 
             serde_json::from_str::<serde_json::Value>(&ret).expect("invalid json");
 
@@ -64,20 +48,16 @@ impl assert_cdylib::TestCase for TestCase {
         let add_word = |dict: *const VoicevoxUserDict, word: &VoicevoxUserDictWord| -> Uuid {
             let mut word_uuid = [0u8; 16];
 
-            assert_ok(voicevox_user_dict_add_word(
-                dict,
-                word as *const _,
-                &mut word_uuid,
-            ));
+            assert_ok(lib.voicevox_user_dict_add_word(dict, word as *const _, &mut word_uuid));
 
             Uuid::from_slice(&word_uuid).expect("invalid uuid")
         };
 
         // テスト用の辞書ファイルを作成
-        let dict = voicevox_user_dict_new();
+        let dict = lib.voicevox_user_dict_new();
 
         // 単語の追加のテスト
-        let word = voicevox_user_dict_word_make(cstr!("hoge").as_ptr(), cstr!("ホゲ").as_ptr());
+        let word = lib.voicevox_user_dict_word_make(cstr!("hoge").as_ptr(), cstr!("ホゲ").as_ptr());
 
         let word_uuid = add_word(dict, &word);
 
@@ -88,13 +68,9 @@ impl assert_cdylib::TestCase for TestCase {
         assert_contains_uuid(&json, &word_uuid);
 
         // 単語の変更のテスト
-        let word = voicevox_user_dict_word_make(cstr!("fuga").as_ptr(), cstr!("フガ").as_ptr());
+        let word = lib.voicevox_user_dict_word_make(cstr!("fuga").as_ptr(), cstr!("フガ").as_ptr());
 
-        assert_ok(voicevox_user_dict_update_word(
-            dict,
-            &word_uuid.into_bytes(),
-            &word,
-        ));
+        assert_ok(lib.voicevox_user_dict_update_word(dict, &word_uuid.into_bytes(), &word));
 
         let json = get_json(&dict);
 
@@ -105,14 +81,14 @@ impl assert_cdylib::TestCase for TestCase {
         assert_contains_uuid(&json, &word_uuid);
 
         // 辞書のインポートのテスト。
-        let other_dict = voicevox_user_dict_new();
+        let other_dict = lib.voicevox_user_dict_new();
 
         let other_word =
-            voicevox_user_dict_word_make(cstr!("piyo").as_ptr(), cstr!("ピヨ").as_ptr());
+            lib.voicevox_user_dict_word_make(cstr!("piyo").as_ptr(), cstr!("ピヨ").as_ptr());
 
         let other_word_uuid = add_word(other_dict, &other_word);
 
-        assert_ok(voicevox_user_dict_import(dict, other_dict));
+        assert_ok(lib.voicevox_user_dict_import(dict, other_dict));
 
         let json = get_json(&dict);
         assert!(json.contains("ｆｕｇａ"));
@@ -123,10 +99,7 @@ impl assert_cdylib::TestCase for TestCase {
         assert_contains_uuid(&json, &other_word_uuid);
 
         // 単語の削除のテスト
-        assert_ok(voicevox_user_dict_remove_word(
-            dict,
-            &word_uuid.into_bytes(),
-        ));
+        assert_ok(lib.voicevox_user_dict_remove_word(dict, &word_uuid.into_bytes()));
 
         let json = get_json(&dict);
         assert_not_contains_uuid(&json, &word_uuid);
@@ -136,23 +109,23 @@ impl assert_cdylib::TestCase for TestCase {
         // 辞書のセーブ・ロードのテスト
         let temp_path = NamedTempFile::new().unwrap().into_temp_path();
         let temp_path = CString::new(temp_path.to_str().unwrap()).unwrap();
-        let word = voicevox_user_dict_word_make(cstr!("hoge").as_ptr(), cstr!("ホゲ").as_ptr());
+        let word = lib.voicevox_user_dict_word_make(cstr!("hoge").as_ptr(), cstr!("ホゲ").as_ptr());
         let word_uuid = add_word(dict, &word);
 
-        assert_ok(voicevox_user_dict_save(dict, temp_path.as_ptr()));
-        assert_ok(voicevox_user_dict_load(other_dict, temp_path.as_ptr()));
+        assert_ok(lib.voicevox_user_dict_save(dict, temp_path.as_ptr()));
+        assert_ok(lib.voicevox_user_dict_load(other_dict, temp_path.as_ptr()));
 
         let json = get_json(&other_dict);
         assert_contains_uuid(&json, &word_uuid);
         assert_contains_uuid(&json, &other_word_uuid);
 
-        voicevox_user_dict_delete(dict);
-        voicevox_user_dict_delete(other_dict);
+        lib.voicevox_user_dict_delete(dict);
+        lib.voicevox_user_dict_delete(other_dict);
 
         return Ok(());
 
         fn assert_ok(result_code: VoicevoxResultCode) {
-            std::assert_eq!(VoicevoxResultCode::VOICEVOX_RESULT_OK, result_code);
+            std::assert_eq!(c_api::VoicevoxResultCode_VOICEVOX_RESULT_OK, result_code);
         }
 
         fn assert_contains_uuid(text: &str, pattern: &Uuid) {
diff --git a/crates/voicevox_core_c_api/xcframework/Frameworks/aarch64/voicevox_core.framework/Info.plist b/crates/voicevox_core_c_api/xcframework/Frameworks/aarch64/voicevox_core.framework/Info.plist
new file mode 100644
index 000000000..f3f359d09
--- /dev/null
+++ b/crates/voicevox_core_c_api/xcframework/Frameworks/aarch64/voicevox_core.framework/Info.plist
@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>BuildMachineOSBuild</key>
+	<string>23B81</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>voicevox_core</string>
+	<key>CFBundleIdentifier</key>
+	<string>jp.hiroshiba.voicevox.voicevox-core</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>voicevox_core</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSupportedPlatforms</key>
+	<array>
+		<string>iPhoneOS</string>
+	</array>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>DTCompiler</key>
+	<string>com.apple.compilers.llvm.clang.1_0</string>
+	<key>DTPlatformBuild</key>
+	<string>21C52</string>
+	<key>DTPlatformName</key>
+	<string>iphoneos</string>
+	<key>DTPlatformVersion</key>
+	<string>17.2</string>
+	<key>DTSDKBuild</key>
+	<string>21C52</string>
+	<key>DTSDKName</key>
+	<string>iphoneos17.2</string>
+	<key>DTXcode</key>
+	<string>1510</string>
+	<key>DTXcodeBuild</key>
+	<string>15C65</string>
+	<key>MinimumOSVersion</key>
+	<string>16.2</string>
+	<key>UIDeviceFamily</key>
+	<array>
+		<integer>1</integer>
+		<integer>2</integer>
+	</array>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>arm64</string>
+	</array>
+</dict>
+</plist>
diff --git a/crates/voicevox_core_c_api/xcframework/Frameworks/aarch64/voicevox_core.framework/Modules/module.modulemap b/crates/voicevox_core_c_api/xcframework/Frameworks/aarch64/voicevox_core.framework/Modules/module.modulemap
new file mode 100644
index 000000000..a4812ac0c
--- /dev/null
+++ b/crates/voicevox_core_c_api/xcframework/Frameworks/aarch64/voicevox_core.framework/Modules/module.modulemap
@@ -0,0 +1,6 @@
+framework module voicevox_core {
+  umbrella header "voicevox_core.h"
+  export *
+
+  module * { export * }
+}
diff --git a/crates/voicevox_core_c_api/xcframework/Frameworks/sim/voicevox_core.framework/Info.plist b/crates/voicevox_core_c_api/xcframework/Frameworks/sim/voicevox_core.framework/Info.plist
new file mode 100644
index 000000000..dea41a54d
--- /dev/null
+++ b/crates/voicevox_core_c_api/xcframework/Frameworks/sim/voicevox_core.framework/Info.plist
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>BuildMachineOSBuild</key>
+	<string>23B81</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>voicevox_core</string>
+	<key>CFBundleIdentifier</key>
+	<string>jp.hiroshiba.voicevox.voicevox-core</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>voicevox_core</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSupportedPlatforms</key>
+	<array>
+		<string>iPhoneSimulator</string>
+	</array>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>DTCompiler</key>
+	<string>com.apple.compilers.llvm.clang.1_0</string>
+	<key>DTPlatformBuild</key>
+	<string>21C52</string>
+	<key>DTPlatformName</key>
+	<string>iphonesimulator</string>
+	<key>DTPlatformVersion</key>
+	<string>17.2</string>
+	<key>DTSDKBuild</key>
+	<string>21C52</string>
+	<key>DTSDKName</key>
+	<string>iphonesimulator17.2</string>
+	<key>DTXcode</key>
+	<string>1510</string>
+	<key>DTXcodeBuild</key>
+	<string>15C65</string>
+	<key>MinimumOSVersion</key>
+	<string>16.2</string>
+	<key>UIDeviceFamily</key>
+	<array>
+		<integer>1</integer>
+		<integer>2</integer>
+	</array>
+</dict>
+</plist>
diff --git a/crates/voicevox_core_c_api/xcframework/Frameworks/sim/voicevox_core.framework/Modules/module.modulemap b/crates/voicevox_core_c_api/xcframework/Frameworks/sim/voicevox_core.framework/Modules/module.modulemap
new file mode 100644
index 000000000..a4812ac0c
--- /dev/null
+++ b/crates/voicevox_core_c_api/xcframework/Frameworks/sim/voicevox_core.framework/Modules/module.modulemap
@@ -0,0 +1,6 @@
+framework module voicevox_core {
+  umbrella header "voicevox_core.h"
+  export *
+
+  module * { export * }
+}
diff --git a/crates/voicevox_core_c_api/xcframework/Headers/README.md b/crates/voicevox_core_c_api/xcframework/Headers/README.md
deleted file mode 100644
index cd3b3f6a0..000000000
--- a/crates/voicevox_core_c_api/xcframework/Headers/README.md
+++ /dev/null
@@ -1,5 +0,0 @@
-# xcframeworkのHeadersに追加されるファイル
-## module.modulemap
-
-C言語やObjective-Cのモジュールが、ライブラリ内の公開インターフェースを表現するために使用されます。  
-これにより、外部のコードがこのライブラリを利用する際に、必要なインクルードや参照を容易にすることができます。
diff --git a/crates/voicevox_core_c_api/xcframework/Headers/module.modulemap b/crates/voicevox_core_c_api/xcframework/Headers/module.modulemap
deleted file mode 100644
index 1b1680b2d..000000000
--- a/crates/voicevox_core_c_api/xcframework/Headers/module.modulemap
+++ /dev/null
@@ -1,4 +0,0 @@
-module VoicevoxCore {
-  header "voicevox_core.h"
-  export *
-}
diff --git a/crates/voicevox_core_c_api/xcframework/README.md b/crates/voicevox_core_c_api/xcframework/README.md
new file mode 100644
index 000000000..3dda8f3a7
--- /dev/null
+++ b/crates/voicevox_core_c_api/xcframework/README.md
@@ -0,0 +1,6 @@
+# xcframeworkフォルダの内容について
+## Frameworks
+
+iOS向けの配布ライブラリXCFramework内のFrameworkを作るための雛形です。
+雛形は端末用とシミュレータ用の2種類です。
+
diff --git a/crates/voicevox_core_java_api/Cargo.toml b/crates/voicevox_core_java_api/Cargo.toml
index 887813685..06b2af618 100644
--- a/crates/voicevox_core_java_api/Cargo.toml
+++ b/crates/voicevox_core_java_api/Cargo.toml
@@ -8,6 +8,7 @@ publish.workspace = true
 crate-type = ["cdylib"]
 
 [features]
+cuda = ["voicevox_core/cuda"]
 directml = ["voicevox_core/directml"]
 
 [dependencies]
diff --git a/crates/voicevox_core_java_api/lib/src/main/java/jp/hiroshiba/voicevoxcore/VoiceModel.java b/crates/voicevox_core_java_api/lib/src/main/java/jp/hiroshiba/voicevoxcore/VoiceModel.java
index 05c1a11b2..576629515 100644
--- a/crates/voicevox_core_java_api/lib/src/main/java/jp/hiroshiba/voicevoxcore/VoiceModel.java
+++ b/crates/voicevox_core_java_api/lib/src/main/java/jp/hiroshiba/voicevoxcore/VoiceModel.java
@@ -4,6 +4,7 @@
 import com.google.gson.annotations.Expose;
 import com.google.gson.annotations.SerializedName;
 import jakarta.annotation.Nonnull;
+import jakarta.annotation.Nullable;
 
 /** 音声モデル。 */
 public class VoiceModel extends Dll {
@@ -68,6 +69,16 @@ public static class SpeakerMeta {
     @Nonnull
     public final String version;
 
+    /**
+     * 話者の順番。
+     *
+     * <p>{@code SpeakerMeta}の列は、この値に対して昇順に並んでいるべきである。
+     */
+    @SerializedName("order")
+    @Expose
+    @Nullable
+    public final Integer order;
+
     private SpeakerMeta() {
       // GSONからコンストラクトするため、このメソッドは呼ばれることは無い。
       // このメソッドは@Nonnullを満たすために必要。
@@ -75,6 +86,7 @@ private SpeakerMeta() {
       this.styles = new StyleMeta[0];
       this.speakerUuid = "";
       this.version = "";
+      this.order = null;
     }
   }
 
@@ -91,9 +103,35 @@ public static class StyleMeta {
     @Expose
     public final int id;
 
+    /** スタイルに対応するモデルの種類。 */
+    @SerializedName("type")
+    @Expose
+    @Nonnull
+    public final StyleType type;
+
+    /**
+     * 話者の順番。
+     *
+     * <p>{@link SpeakerMeta#styles}の列は、この値に対して昇順に並んでいるべきである。
+     */
+    @SerializedName("order")
+    @Expose
+    @Nullable
+    public final Integer order;
+
     private StyleMeta() {
       this.name = "";
       this.id = 0;
+      this.type = StyleType.TALK;
+      this.order = null;
     }
   }
+
+  /** スタイル（style）に対応するモデルの種類。 */
+  public static enum StyleType {
+    /** 音声合成クエリの作成と音声合成が可能。 */
+    @SerializedName("talk")
+    @Expose
+    TALK,
+  }
 }
diff --git a/crates/voicevox_core_java_api/lib/src/main/java/jp/hiroshiba/voicevoxcore/exceptions/InvalidModelFormatException.java b/crates/voicevox_core_java_api/lib/src/main/java/jp/hiroshiba/voicevoxcore/exceptions/InvalidModelFormatException.java
new file mode 100644
index 000000000..b82016164
--- /dev/null
+++ b/crates/voicevox_core_java_api/lib/src/main/java/jp/hiroshiba/voicevoxcore/exceptions/InvalidModelFormatException.java
@@ -0,0 +1,14 @@
+package jp.hiroshiba.voicevoxcore.exceptions;
+
+import java.io.IOException;
+
+/** モデルの形式が不正。 */
+public class InvalidModelFormatException extends IOException {
+  public InvalidModelFormatException(String message) {
+    super(message);
+  }
+
+  public InvalidModelFormatException(String message, Throwable cause) {
+    super(message, cause);
+  }
+}
diff --git a/crates/voicevox_core_java_api/lib/src/test/java/jp/hiroshiba/voicevoxcore/MetaTest.java b/crates/voicevox_core_java_api/lib/src/test/java/jp/hiroshiba/voicevoxcore/MetaTest.java
index 741f84e79..60df7359f 100644
--- a/crates/voicevox_core_java_api/lib/src/test/java/jp/hiroshiba/voicevoxcore/MetaTest.java
+++ b/crates/voicevox_core_java_api/lib/src/test/java/jp/hiroshiba/voicevoxcore/MetaTest.java
@@ -13,7 +13,7 @@ class MetaTest {
   void checkLoad() {
     // cwdはvoicevox_core/crates/voicevox_core_java_api/lib
     String cwd = System.getProperty("user.dir");
-    File path = new File(cwd + "/../../../model/sample.vvm");
+    File path = new File(cwd + "/../../test_util/data/model/sample.vvm");
     VoiceModel model = new VoiceModel(path.getAbsolutePath());
     assertNotNull(model.metas);
   }
diff --git a/crates/voicevox_core_java_api/lib/src/test/java/jp/hiroshiba/voicevoxcore/TestUtils.java b/crates/voicevox_core_java_api/lib/src/test/java/jp/hiroshiba/voicevoxcore/TestUtils.java
index 670eddbdb..032c38a3d 100644
--- a/crates/voicevox_core_java_api/lib/src/test/java/jp/hiroshiba/voicevoxcore/TestUtils.java
+++ b/crates/voicevox_core_java_api/lib/src/test/java/jp/hiroshiba/voicevoxcore/TestUtils.java
@@ -6,7 +6,7 @@ class TestUtils {
   VoiceModel loadModel() {
     // cwdはvoicevox_core/crates/voicevox_core_java_api/lib
     String cwd = System.getProperty("user.dir");
-    File path = new File(cwd + "/../../../model/sample.vvm");
+    File path = new File(cwd + "/../../test_util/data/model/sample.vvm");
 
     try {
       return new VoiceModel(path.getCanonicalPath());
diff --git a/crates/voicevox_core_java_api/settings.gradle b/crates/voicevox_core_java_api/settings.gradle
index 20a5e2c6a..75f5810ac 100644
--- a/crates/voicevox_core_java_api/settings.gradle
+++ b/crates/voicevox_core_java_api/settings.gradle
@@ -40,5 +40,5 @@ gradle.ext {
   gsonVersion = '2.10.1'
   jakartaValidationVersion = '3.0.2'
   jakartaAnnotationVersion = '2.1.1'
-  onnxruntimeVersion = '1.14.0'
+  onnxruntimeVersion = '1.17.3'
 }
diff --git a/crates/voicevox_core_java_api/src/common.rs b/crates/voicevox_core_java_api/src/common.rs
index c2987e207..bdb37f4ff 100644
--- a/crates/voicevox_core_java_api/src/common.rs
+++ b/crates/voicevox_core_java_api/src/common.rs
@@ -1,70 +1,7 @@
 use std::{error::Error as _, iter};
 
 use derive_more::From;
-use jni::{
-    objects::{JObject, JThrowable},
-    JNIEnv,
-};
-
-// FIXME: 別ファイルに分離する
-#[no_mangle]
-extern "system" fn Java_jp_hiroshiba_voicevoxcore_Dll_00024LoggerInitializer_initLogger(
-    _: JNIEnv<'_>,
-    _: JObject<'_>,
-) {
-    if cfg!(target_os = "android") {
-        android_logger::init_once(
-            android_logger::Config::default()
-                .with_tag("VoicevoxCore")
-                .with_filter(
-                android_logger::FilterBuilder::new()
-                    .parse("error,voicevox_core=info,voicevox_core_java_api=info,onnxruntime=error")
-                    .build(),
-            ),
-        );
-    } else {
-        // TODO: Android以外でのログ出力を良い感じにする。（System.Loggerを使う？）
-        use chrono::SecondsFormat;
-        use std::{
-            env, fmt,
-            io::{self, IsTerminal, Write},
-        };
-        use tracing_subscriber::{fmt::format::Writer, EnvFilter};
-
-        // FIXME: `try_init` → `init` （subscriberは他に存在しないはずなので）
-        let _ = tracing_subscriber::fmt()
-            .with_env_filter(if env::var_os(EnvFilter::DEFAULT_ENV).is_some() {
-                EnvFilter::from_default_env()
-            } else {
-                "error,voicevox_core=info,voicevox_core_c_api=info,onnxruntime=error".into()
-            })
-            .with_timer(local_time as fn(&mut Writer<'_>) -> _)
-            .with_ansi(out().is_terminal() && env_allows_ansi())
-            .with_writer(out)
-            .try_init();
-
-        fn local_time(wtr: &mut Writer<'_>) -> fmt::Result {
-            // ローカル時刻で表示はするが、そのフォーマットはtracing-subscriber本来のものに近いようにする。
-            // https://github.com/tokio-rs/tracing/blob/tracing-subscriber-0.3.16/tracing-subscriber/src/fmt/time/datetime.rs#L235-L241
-            wtr.write_str(&chrono::Local::now().to_rfc3339_opts(SecondsFormat::Micros, false))
-        }
-
-        fn out() -> impl IsTerminal + Write {
-            io::stderr()
-        }
-
-        fn env_allows_ansi() -> bool {
-            // https://docs.rs/termcolor/1.2.0/src/termcolor/lib.rs.html#245-291
-            // ただしWindowsではPowerShellっぽかったらそのまま許可する。
-            // ちゃんとやるなら`ENABLE_VIRTUAL_TERMINAL_PROCESSING`をチェックするなり、そもそも
-            // fwdansiとかでWin32の色に変換するべきだが、面倒。
-            env::var_os("TERM").map_or(
-                cfg!(windows) && env::var_os("PSModulePath").is_some(),
-                |term| term != "dumb",
-            ) && env::var_os("NO_COLOR").is_none()
-        }
-    }
-}
+use jni::{objects::JThrowable, JNIEnv};
 
 #[macro_export]
 macro_rules! object {
@@ -92,7 +29,7 @@ macro_rules! enum_object {
     };
 }
 
-pub fn throw_if_err<T, F>(mut env: JNIEnv<'_>, fallback: T, inner: F) -> T
+pub(crate) fn throw_if_err<T, F>(mut env: JNIEnv<'_>, fallback: T, inner: F) -> T
 where
     F: FnOnce(&mut JNIEnv<'_>) -> Result<T, JavaApiError>,
 {
@@ -132,6 +69,7 @@ where
                             GpuSupport,
                             OpenZipFile,
                             ReadZipEntry,
+                            InvalidModelFormat,
                             ModelAlreadyLoaded,
                             StyleAlreadyLoaded,
                             InvalidModelData,
@@ -218,7 +156,7 @@ where
 }
 
 #[derive(From, Debug)]
-pub enum JavaApiError {
+pub(crate) enum JavaApiError {
     #[from]
     RustApi(voicevox_core::Error),
 
diff --git a/crates/voicevox_core_java_api/src/lib.rs b/crates/voicevox_core_java_api/src/lib.rs
index 4fdea9cab..9615f0a94 100644
--- a/crates/voicevox_core_java_api/src/lib.rs
+++ b/crates/voicevox_core_java_api/src/lib.rs
@@ -1,5 +1,6 @@
 mod common;
 mod info;
+mod logger;
 mod open_jtalk;
 mod synthesizer;
 mod user_dict;
diff --git a/crates/voicevox_core_java_api/src/logger.rs b/crates/voicevox_core_java_api/src/logger.rs
new file mode 100644
index 000000000..30545725e
--- /dev/null
+++ b/crates/voicevox_core_java_api/src/logger.rs
@@ -0,0 +1,62 @@
+use jni::{objects::JObject, JNIEnv};
+
+#[no_mangle]
+extern "system" fn Java_jp_hiroshiba_voicevoxcore_Dll_00024LoggerInitializer_initLogger(
+    _: JNIEnv<'_>,
+    _: JObject<'_>,
+) {
+    if cfg!(target_os = "android") {
+        android_logger::init_once(
+            android_logger::Config::default()
+                .with_tag("VoicevoxCore")
+                .with_filter(
+                    android_logger::FilterBuilder::new()
+                        // FIXME: ortも`warn`は出すべき
+                        .parse("error,voicevox_core=info,voicevox_core_java_api=info,ort=error")
+                        .build(),
+                ),
+        );
+    } else {
+        // TODO: Android以外でのログ出力を良い感じにする。（System.Loggerを使う？）
+        use chrono::SecondsFormat;
+        use std::{
+            env, fmt,
+            io::{self, IsTerminal, Write},
+        };
+        use tracing_subscriber::{fmt::format::Writer, EnvFilter};
+
+        // FIXME: `try_init` → `init` （subscriberは他に存在しないはずなので）
+        let _ = tracing_subscriber::fmt()
+            .with_env_filter(if env::var_os(EnvFilter::DEFAULT_ENV).is_some() {
+                EnvFilter::from_default_env()
+            } else {
+                // FIXME: `c_api`じゃないし、ortも`warn`は出すべき
+                "error,voicevox_core=info,voicevox_core_c_api=info,ort=error".into()
+            })
+            .with_timer(local_time as fn(&mut Writer<'_>) -> _)
+            .with_ansi(out().is_terminal() && env_allows_ansi())
+            .with_writer(out)
+            .try_init();
+
+        fn local_time(wtr: &mut Writer<'_>) -> fmt::Result {
+            // ローカル時刻で表示はするが、そのフォーマットはtracing-subscriber本来のものに近いようにする。
+            // https://github.com/tokio-rs/tracing/blob/tracing-subscriber-0.3.16/tracing-subscriber/src/fmt/time/datetime.rs#L235-L241
+            wtr.write_str(&chrono::Local::now().to_rfc3339_opts(SecondsFormat::Micros, false))
+        }
+
+        fn out() -> impl IsTerminal + Write {
+            io::stderr()
+        }
+
+        fn env_allows_ansi() -> bool {
+            // https://docs.rs/termcolor/1.2.0/src/termcolor/lib.rs.html#245-291
+            // ただしWindowsではPowerShellっぽかったらそのまま許可する。
+            // ちゃんとやるなら`ENABLE_VIRTUAL_TERMINAL_PROCESSING`をチェックするなり、そもそも
+            // fwdansiとかでWin32の色に変換するべきだが、面倒。
+            env::var_os("TERM").map_or(
+                cfg!(windows) && env::var_os("PSModulePath").is_some(),
+                |term| term != "dumb",
+            ) && env::var_os("NO_COLOR").is_none()
+        }
+    }
+}
diff --git a/crates/voicevox_core_macros/src/inference_domain.rs b/crates/voicevox_core_macros/src/inference_domain.rs
index 72bc4d18a..d24a20ab1 100644
--- a/crates/voicevox_core_macros/src/inference_domain.rs
+++ b/crates/voicevox_core_macros/src/inference_domain.rs
@@ -223,22 +223,28 @@ pub(crate) fn derive_inference_input_signature(
             fn make_run_context<R: crate::infer::InferenceRuntime>(
                 self,
                 sess: &mut R::Session,
-            ) -> R::RunContext<'_> {
+            ) -> ::anyhow::Result<R::RunContext<'_>> {
                 let mut ctx = <R::RunContext<'_> as ::std::convert::From<_>>::from(sess);
                 #(
-                    __ArrayExt::push_to_ctx(self.#field_names, &mut ctx);
+                    __ArrayExt::push_to_ctx(self.#field_names, &mut ctx)?;
                 )*
-                return ctx;
+                return ::std::result::Result::Ok(ctx);
 
                 trait __ArrayExt {
-                    fn push_to_ctx(self, ctx: &mut impl crate::infer::PushInputTensor);
+                    fn push_to_ctx(
+                        self,
+                        ctx: &mut impl crate::infer::PushInputTensor,
+                    ) -> ::anyhow::Result<()>;
                 }
 
                 impl<A: crate::infer::InputScalar, D: ::ndarray::Dimension + 'static> __ArrayExt
                     for ::ndarray::Array<A, D>
                 {
-                    fn push_to_ctx(self, ctx: &mut impl crate::infer::PushInputTensor) {
-                        A::push_tensor_to_ctx(self, ctx);
+                    fn push_to_ctx(
+                        self,
+                        ctx: &mut impl crate::infer::PushInputTensor,
+                    ) -> ::anyhow::Result<()> {
+                        A::push_tensor_to_ctx(self, ctx)
                     }
                 }
             }
diff --git a/crates/voicevox_core_macros/src/lib.rs b/crates/voicevox_core_macros/src/lib.rs
index 5f2f26809..98a2fdc5c 100644
--- a/crates/voicevox_core_macros/src/lib.rs
+++ b/crates/voicevox_core_macros/src/lib.rs
@@ -17,17 +17,18 @@ use syn::parse_macro_input;
 /// use enum_map::Enum;
 /// use macros::InferenceOperation;
 ///
-/// pub(crate) enum InferenceDomainImpl {}
+/// pub(crate) enum TalkDomain {}
 ///
-/// impl InferenceDomain for InferenceDomainImpl {
-///     type Operation = InferenceOperationImpl;
+/// impl InferenceDomain for TalkDomain {
+///     type Operation = TalkOperation;
+///     // ...
 /// }
 ///
 /// #[derive(Clone, Copy, Enum, InferenceOperation)]
 /// #[inference_operation(
-///     type Domain = InferenceDomainImpl;
+///     type Domain = TalkDomain;
 /// )]
-/// pub(crate) enum InferenceOperationImpl {
+/// pub(crate) enum TalkOperation {
 ///     #[inference_operation(
 ///         type Input = PredictDurationInput;
 ///         type Output = PredictDurationOutput;
diff --git a/crates/voicevox_core_python_api/Cargo.toml b/crates/voicevox_core_python_api/Cargo.toml
index 8e494173d..441625fb7 100644
--- a/crates/voicevox_core_python_api/Cargo.toml
+++ b/crates/voicevox_core_python_api/Cargo.toml
@@ -8,9 +8,11 @@ publish.workspace = true
 crate-type = ["cdylib"]
 
 [features]
+cuda = ["voicevox_core/cuda"]
 directml = ["voicevox_core/directml"]
 
 [dependencies]
+camino.workspace = true
 easy-ext.workspace = true
 log.workspace = true
 pyo3 = { workspace = true, features = ["extension-module"] }
diff --git a/crates/voicevox_core_python_api/poetry.lock b/crates/voicevox_core_python_api/poetry.lock
index fb112ad87..cbf69bec6 100644
--- a/crates/voicevox_core_python_api/poetry.lock
+++ b/crates/voicevox_core_python_api/poetry.lock
@@ -827,6 +827,7 @@ files = [
     {file = "PyYAML-6.0.1-cp311-cp311-win_amd64.whl", hash = "sha256:bf07ee2fef7014951eeb99f56f39c9bb4af143d8aa3c21b1677805985307da34"},
     {file = "PyYAML-6.0.1-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:855fb52b0dc35af121542a76b9a84f8d1cd886ea97c84703eaa6d88e37a2ad28"},
     {file = "PyYAML-6.0.1-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:40df9b996c2b73138957fe23a16a4f0ba614f4c0efce1e9406a184b6d07fa3a9"},
+    {file = "PyYAML-6.0.1-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:a08c6f0fe150303c1c6b71ebcd7213c2858041a7e01975da3a99aed1e7a378ef"},
     {file = "PyYAML-6.0.1-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:6c22bec3fbe2524cde73d7ada88f6566758a8f7227bfbf93a408a9d86bcc12a0"},
     {file = "PyYAML-6.0.1-cp312-cp312-musllinux_1_1_x86_64.whl", hash = "sha256:8d4e9c88387b0f5c7d5f281e55304de64cf7f9c0021a3525bd3b1c542da3b0e4"},
     {file = "PyYAML-6.0.1-cp312-cp312-win32.whl", hash = "sha256:d483d2cdf104e7c9fa60c544d92981f12ad66a457afae824d146093b8c294c54"},
diff --git a/crates/voicevox_core_python_api/pyproject.toml b/crates/voicevox_core_python_api/pyproject.toml
index de1b523b6..edbd472b2 100644
--- a/crates/voicevox_core_python_api/pyproject.toml
+++ b/crates/voicevox_core_python_api/pyproject.toml
@@ -22,6 +22,9 @@ build-backend = "maturin"
 [tool.isort]
 profile = "black"
 
+[tool.pyright]
+executionEnvironments = [{ root = "python/test" }, { root = "python" }]
+
 [tool.maturin]
 module-name = "voicevox_core._rust"
 bindings = "pyo3"
diff --git a/crates/voicevox_core_python_api/python/test/conftest.py b/crates/voicevox_core_python_api/python/test/conftest.py
index 628f4dc56..eec642cb9 100644
--- a/crates/voicevox_core_python_api/python/test/conftest.py
+++ b/crates/voicevox_core_python_api/python/test/conftest.py
@@ -10,7 +10,9 @@
 open_jtalk_dic_dir = (
     root_dir.parent.parent.parent / "test_util" / "data" / "open_jtalk_dic_utf_8-1.11"
 )
-model_dir = root_dir.parent.parent.parent.parent / "model" / "sample.vvm"
+model_dir = (
+    root_dir.parent.parent.parent / "test_util" / "data" / "model" / "sample.vvm"
+)
 
 
 class DurationExampleData(TypedDict):
diff --git a/crates/voicevox_core_python_api/python/test/test_asyncio_metas.py b/crates/voicevox_core_python_api/python/test/test_asyncio_metas.py
new file mode 100644
index 000000000..ec69032b1
--- /dev/null
+++ b/crates/voicevox_core_python_api/python/test/test_asyncio_metas.py
@@ -0,0 +1,26 @@
+"""
+メタ情報の出力が可能かどうかをテストする。
+
+``test_blocking_metas`` と対になる。
+"""
+
+import conftest
+import pytest
+import pytest_asyncio
+from voicevox_core.asyncio import OpenJtalk, Synthesizer, VoiceModel
+
+
+def test_voice_model_metas_works(voice_model: VoiceModel) -> None:
+    _ = voice_model.metas
+
+
+@pytest.mark.asyncio
+async def test_synthesizer_metas_works(voice_model: VoiceModel) -> None:
+    synthesizer = Synthesizer(await OpenJtalk.new(conftest.open_jtalk_dic_dir))
+    await synthesizer.load_voice_model(voice_model)
+    _ = synthesizer.metas
+
+
+@pytest_asyncio.fixture
+async def voice_model() -> VoiceModel:
+    return await VoiceModel.from_path(conftest.model_dir)
diff --git a/crates/voicevox_core_python_api/python/test/test_blocking_metas.py b/crates/voicevox_core_python_api/python/test/test_blocking_metas.py
new file mode 100644
index 000000000..c305e2cdb
--- /dev/null
+++ b/crates/voicevox_core_python_api/python/test/test_blocking_metas.py
@@ -0,0 +1,24 @@
+"""
+メタ情報の出力が可能かどうかをテストする。
+
+``test_asyncio_metas`` と対になる。
+"""
+
+import conftest
+import pytest
+from voicevox_core.blocking import OpenJtalk, Synthesizer, VoiceModel
+
+
+def test_voice_model_metas_works(voice_model: VoiceModel) -> None:
+    _ = voice_model.metas
+
+
+def test_synthesizer_metas_works(voice_model: VoiceModel) -> None:
+    synthesizer = Synthesizer(OpenJtalk(conftest.open_jtalk_dic_dir))
+    synthesizer.load_voice_model(voice_model)
+    _ = synthesizer.metas
+
+
+@pytest.fixture
+def voice_model() -> VoiceModel:
+    return VoiceModel.from_path(conftest.model_dir)
diff --git a/crates/voicevox_core_python_api/python/voicevox_core/_models.py b/crates/voicevox_core_python_api/python/voicevox_core/_models.py
index 195154629..21a2016fe 100644
--- a/crates/voicevox_core_python_api/python/voicevox_core/_models.py
+++ b/crates/voicevox_core_python_api/python/voicevox_core/_models.py
@@ -34,6 +34,13 @@
 """
 
 
+class StyleType(str, Enum):
+    """**スタイル** (_style_)に対応するモデルの種類。"""
+
+    TALK = "talk"
+    """音声合成クエリの作成と音声合成が可能。"""
+
+
 @pydantic.dataclasses.dataclass
 class StyleMeta:
     """**スタイル** (_style_)のメタ情報。"""
@@ -44,6 +51,16 @@ class StyleMeta:
     id: StyleId
     """スタイルID。"""
 
+    type: StyleType = dataclasses.field(default=StyleType.TALK)
+    """スタイルに対応するモデルの種類。"""
+
+    order: Optional[int] = None
+    """
+    話者の順番。
+
+    :attr:`SpeakerMeta.styles` は、この値に対して昇順に並んでいるべきである。
+    """
+
 
 @pydantic.dataclasses.dataclass
 class SpeakerMeta:
@@ -61,6 +78,13 @@ class SpeakerMeta:
     version: StyleVersion
     """話者のUUID。"""
 
+    order: Optional[int] = None
+    """
+    話者の順番。
+
+    ``SpeakerMeta`` の列は、この値に対して昇順に並んでいるべきである。
+    """
+
 
 @pydantic.dataclasses.dataclass
 class SupportedDevices:
diff --git a/crates/voicevox_core_python_api/python/voicevox_core/_rust/__init__.pyi b/crates/voicevox_core_python_api/python/voicevox_core/_rust/__init__.pyi
index 3a47ef02b..89a50d230 100644
--- a/crates/voicevox_core_python_api/python/voicevox_core/_rust/__init__.pyi
+++ b/crates/voicevox_core_python_api/python/voicevox_core/_rust/__init__.pyi
@@ -37,6 +37,11 @@ class ReadZipEntryError(Exception):
 
     ...
 
+class InvalidModelFormatError(Exception):
+    """モデルの形式が不正。"""
+
+    ...
+
 class ModelAlreadyLoadedError(Exception):
     """すでに読み込まれている音声モデルを読み込もうとした。"""
 
diff --git a/crates/voicevox_core_python_api/python/voicevox_core/_rust/asyncio.pyi b/crates/voicevox_core_python_api/python/voicevox_core/_rust/asyncio.pyi
index 7a6596008..d8e9f6fe2 100644
--- a/crates/voicevox_core_python_api/python/voicevox_core/_rust/asyncio.pyi
+++ b/crates/voicevox_core_python_api/python/voicevox_core/_rust/asyncio.pyi
@@ -1,4 +1,4 @@
-from pathlib import Path
+from os import PathLike
 from typing import TYPE_CHECKING, Dict, List, Literal, Union
 from uuid import UUID
 
@@ -18,7 +18,7 @@ class VoiceModel:
     音声モデル。"""
 
     @staticmethod
-    async def from_path(path: Union[Path, str]) -> VoiceModel:
+    async def from_path(path: Union[str, PathLike[str]]) -> VoiceModel:
         """
         VVMファイルから ``VoiceModel`` を生成する。
 
@@ -43,7 +43,7 @@ class OpenJtalk:
     """
 
     @staticmethod
-    async def new(open_jtalk_dict_dir: Union[Path, str]) -> "OpenJtalk":
+    async def new(open_jtalk_dict_dir: Union[str, PathLike[str]]) -> "OpenJtalk":
         """
         ``OpenJTalk`` を生成する。
 
diff --git a/crates/voicevox_core_python_api/python/voicevox_core/_rust/blocking.pyi b/crates/voicevox_core_python_api/python/voicevox_core/_rust/blocking.pyi
index 3a208fb33..5584d68bb 100644
--- a/crates/voicevox_core_python_api/python/voicevox_core/_rust/blocking.pyi
+++ b/crates/voicevox_core_python_api/python/voicevox_core/_rust/blocking.pyi
@@ -1,4 +1,4 @@
-from pathlib import Path
+from os import PathLike
 from typing import TYPE_CHECKING, Dict, List, Literal, Union
 from uuid import UUID
 
@@ -18,7 +18,7 @@ class VoiceModel:
     音声モデル。"""
 
     @staticmethod
-    def from_path(path: Union[Path, str]) -> VoiceModel:
+    def from_path(path: Union[str, PathLike[str]]) -> VoiceModel:
         """
         VVMファイルから ``VoiceModel`` を生成する。
 
@@ -47,7 +47,7 @@ class OpenJtalk:
         Open JTalkの辞書ディレクトリ。
     """
 
-    def __init__(self, open_jtalk_dict_dir: Union[Path, str]) -> None: ...
+    def __init__(self, open_jtalk_dict_dir: Union[str, PathLike[str]]) -> None: ...
     def use_user_dict(self, user_dict: UserDict) -> None:
         """
         ユーザー辞書を設定する。
diff --git a/crates/voicevox_core_python_api/python/voicevox_core/asyncio.py b/crates/voicevox_core_python_api/python/voicevox_core/asyncio.py
index fec0c831b..75b160814 100644
--- a/crates/voicevox_core_python_api/python/voicevox_core/asyncio.py
+++ b/crates/voicevox_core_python_api/python/voicevox_core/asyncio.py
@@ -1,3 +1,4 @@
+# pyright: reportMissingModuleSource=false
 from ._rust.asyncio import OpenJtalk, Synthesizer, UserDict, VoiceModel
 
 __all__ = ["OpenJtalk", "Synthesizer", "UserDict", "VoiceModel"]
diff --git a/crates/voicevox_core_python_api/python/voicevox_core/blocking.py b/crates/voicevox_core_python_api/python/voicevox_core/blocking.py
index e378037c3..80f61fdcb 100644
--- a/crates/voicevox_core_python_api/python/voicevox_core/blocking.py
+++ b/crates/voicevox_core_python_api/python/voicevox_core/blocking.py
@@ -1,3 +1,4 @@
+# pyright: reportMissingModuleSource=false
 from ._rust.blocking import OpenJtalk, Synthesizer, UserDict, VoiceModel
 
 __all__ = ["OpenJtalk", "Synthesizer", "UserDict", "VoiceModel"]
diff --git a/crates/voicevox_core_python_api/src/convert.rs b/crates/voicevox_core_python_api/src/convert.rs
index 4b908c48b..3cee4186b 100644
--- a/crates/voicevox_core_python_api/src/convert.rs
+++ b/crates/voicevox_core_python_api/src/convert.rs
@@ -1,5 +1,6 @@
 use std::{error::Error as _, future::Future, iter, path::PathBuf};
 
+use camino::Utf8PathBuf;
 use easy_ext::ext;
 use pyo3::{
     exceptions::{PyException, PyValueError},
@@ -15,13 +16,13 @@ use voicevox_core::{
 
 use crate::{
     ExtractFullContextLabelError, GetSupportedDevicesError, GpuSupportError, InferenceFailedError,
-    InvalidModelDataError, InvalidWordError, LoadUserDictError, ModelAlreadyLoadedError,
-    ModelNotFoundError, NotLoadedOpenjtalkDictError, OpenZipFileError, ParseKanaError,
-    ReadZipEntryError, SaveUserDictError, StyleAlreadyLoadedError, StyleNotFoundError,
-    UseUserDictError, WordNotFoundError,
+    InvalidModelDataError, InvalidModelFormatError, InvalidWordError, LoadUserDictError,
+    ModelAlreadyLoadedError, ModelNotFoundError, NotLoadedOpenjtalkDictError, OpenZipFileError,
+    ParseKanaError, ReadZipEntryError, SaveUserDictError, StyleAlreadyLoadedError,
+    StyleNotFoundError, UseUserDictError, WordNotFoundError,
 };
 
-pub fn from_acceleration_mode(ob: &PyAny) -> PyResult<AccelerationMode> {
+pub(crate) fn from_acceleration_mode(ob: &PyAny) -> PyResult<AccelerationMode> {
     let py = ob.py();
 
     let class = py.import("voicevox_core")?.getattr("AccelerationMode")?;
@@ -38,14 +39,16 @@ pub fn from_acceleration_mode(ob: &PyAny) -> PyResult<AccelerationMode> {
     }
 }
 
-pub fn from_utf8_path(ob: &PyAny) -> PyResult<String> {
+// FIXME: `UserDict`についてはこれではなく、`PathBuf::extract`を直接使うようにする
+pub(crate) fn from_utf8_path(ob: &PyAny) -> PyResult<Utf8PathBuf> {
     PathBuf::extract(ob)?
         .into_os_string()
         .into_string()
+        .map(Utf8PathBuf::from)
         .map_err(|s| PyValueError::new_err(format!("{s:?} cannot be encoded to UTF-8")))
 }
 
-pub fn from_dataclass<T: DeserializeOwned>(ob: &PyAny) -> PyResult<T> {
+pub(crate) fn from_dataclass<T: DeserializeOwned>(ob: &PyAny) -> PyResult<T> {
     let py = ob.py();
 
     let ob = py.import("dataclasses")?.call_method1("asdict", (ob,))?;
@@ -56,7 +59,7 @@ pub fn from_dataclass<T: DeserializeOwned>(ob: &PyAny) -> PyResult<T> {
     serde_json::from_str(json).into_py_value_result()
 }
 
-pub fn to_pydantic_voice_model_meta<'py>(
+pub(crate) fn to_pydantic_voice_model_meta<'py>(
     metas: &VoiceModelMeta,
     py: Python<'py>,
 ) -> PyResult<Vec<&'py PyAny>> {
@@ -71,7 +74,7 @@ pub fn to_pydantic_voice_model_meta<'py>(
         .collect::<PyResult<Vec<_>>>()
 }
 
-pub fn to_pydantic_dataclass(x: impl Serialize, class: &PyAny) -> PyResult<&PyAny> {
+pub(crate) fn to_pydantic_dataclass(x: impl Serialize, class: &PyAny) -> PyResult<&PyAny> {
     let py = class.py();
 
     let x = serde_json::to_string(&x).into_py_value_result()?;
@@ -105,7 +108,7 @@ pub(crate) fn blocking_modify_accent_phrases<'py>(
         .collect()
 }
 
-pub fn async_modify_accent_phrases<'py, Fun, Fut>(
+pub(crate) fn async_modify_accent_phrases<'py, Fun, Fut>(
     accent_phrases: &'py PyList,
     speaker_id: StyleId,
     py: Python<'py>,
@@ -142,16 +145,16 @@ where
     )
 }
 
-pub fn to_rust_uuid(ob: &PyAny) -> PyResult<Uuid> {
+pub(crate) fn to_rust_uuid(ob: &PyAny) -> PyResult<Uuid> {
     let uuid = ob.getattr("hex")?.extract::<String>()?;
     uuid.parse::<Uuid>().into_py_value_result()
 }
-pub fn to_py_uuid(py: Python<'_>, uuid: Uuid) -> PyResult<PyObject> {
+pub(crate) fn to_py_uuid(py: Python<'_>, uuid: Uuid) -> PyResult<PyObject> {
     let uuid = uuid.hyphenated().to_string();
     let uuid = py.import("uuid")?.call_method1("UUID", (uuid,))?;
     Ok(uuid.to_object(py))
 }
-pub fn to_rust_user_dict_word(ob: &PyAny) -> PyResult<voicevox_core::UserDictWord> {
+pub(crate) fn to_rust_user_dict_word(ob: &PyAny) -> PyResult<voicevox_core::UserDictWord> {
     voicevox_core::UserDictWord::new(
         ob.getattr("surface")?.extract()?,
         ob.getattr("pronunciation")?.extract()?,
@@ -161,7 +164,7 @@ pub fn to_rust_user_dict_word(ob: &PyAny) -> PyResult<voicevox_core::UserDictWor
     )
     .into_py_result(ob.py())
 }
-pub fn to_py_user_dict_word<'py>(
+pub(crate) fn to_py_user_dict_word<'py>(
     py: Python<'py>,
     word: &voicevox_core::UserDictWord,
 ) -> PyResult<&'py PyAny> {
@@ -171,14 +174,14 @@ pub fn to_py_user_dict_word<'py>(
         .downcast()?;
     to_pydantic_dataclass(word, class)
 }
-pub fn to_rust_word_type(word_type: &PyAny) -> PyResult<UserDictWordType> {
+pub(crate) fn to_rust_word_type(word_type: &PyAny) -> PyResult<UserDictWordType> {
     let name = word_type.getattr("name")?.extract::<String>()?;
 
     serde_json::from_value::<UserDictWordType>(json!(name)).into_py_value_result()
 }
 
 #[ext(VoicevoxCoreResultExt)]
-pub impl<T> voicevox_core::Result<T> {
+pub(crate) impl<T> voicevox_core::Result<T> {
     fn into_py_result(self, py: Python<'_>) -> PyResult<T> {
         use voicevox_core::ErrorKind;
 
@@ -191,6 +194,7 @@ pub impl<T> voicevox_core::Result<T> {
                 ErrorKind::ReadZipEntry => ReadZipEntryError::new_err(msg),
                 ErrorKind::ModelAlreadyLoaded => ModelAlreadyLoadedError::new_err(msg),
                 ErrorKind::StyleAlreadyLoaded => StyleAlreadyLoadedError::new_err(msg),
+                ErrorKind::InvalidModelFormat => InvalidModelFormatError::new_err(msg),
                 ErrorKind::InvalidModelData => InvalidModelDataError::new_err(msg),
                 ErrorKind::GetSupportedDevices => GetSupportedDevicesError::new_err(msg),
                 ErrorKind::StyleNotFound => StyleNotFoundError::new_err(msg),
diff --git a/crates/voicevox_core_python_api/src/lib.rs b/crates/voicevox_core_python_api/src/lib.rs
index 9d36cafcb..492d18f0e 100644
--- a/crates/voicevox_core_python_api/src/lib.rs
+++ b/crates/voicevox_core_python_api/src/lib.rs
@@ -1,24 +1,15 @@
-use std::{marker::PhantomData, sync::Arc};
+use std::marker::PhantomData;
 
 mod convert;
-use self::convert::{
-    async_modify_accent_phrases, from_acceleration_mode, from_dataclass, from_utf8_path,
-    to_py_user_dict_word, to_py_uuid, to_pydantic_dataclass, to_pydantic_voice_model_meta,
-    to_rust_user_dict_word, to_rust_uuid, VoicevoxCoreResultExt as _,
-};
+use self::convert::{from_utf8_path, to_pydantic_dataclass, VoicevoxCoreResultExt as _};
 use easy_ext::ext;
 use log::debug;
 use pyo3::{
     create_exception,
     exceptions::{PyException, PyKeyError, PyValueError},
-    pyclass, pyfunction, pymethods, pymodule,
-    types::{IntoPyDict as _, PyBytes, PyDict, PyList, PyModule},
-    wrap_pyfunction, PyAny, PyObject, PyRef, PyResult, PyTypeInfo, Python, ToPyObject,
-};
-use uuid::Uuid;
-use voicevox_core::{
-    AccelerationMode, AudioQueryModel, InitializeOptions, StyleId, SynthesisOptions, TtsOptions,
-    UserDictWord, VoiceModelId,
+    pyfunction, pymodule,
+    types::PyModule,
+    wrap_pyfunction, PyAny, PyResult, PyTypeInfo, Python,
 };
 
 #[pymodule]
@@ -41,10 +32,10 @@ fn rust(py: Python<'_>, module: &PyModule) -> PyResult<()> {
     module.add_and_register_submodule(blocking_module)?;
 
     let asyncio_module = PyModule::new(py, "voicevox_core._rust.asyncio")?;
-    asyncio_module.add_class::<self::Synthesizer>()?;
-    asyncio_module.add_class::<self::OpenJtalk>()?;
-    asyncio_module.add_class::<self::VoiceModel>()?;
-    asyncio_module.add_class::<self::UserDict>()?;
+    asyncio_module.add_class::<self::asyncio::Synthesizer>()?;
+    asyncio_module.add_class::<self::asyncio::OpenJtalk>()?;
+    asyncio_module.add_class::<self::asyncio::VoiceModel>()?;
+    asyncio_module.add_class::<self::asyncio::UserDict>()?;
     module.add_and_register_submodule(asyncio_module)
 }
 
@@ -80,6 +71,7 @@ exceptions! {
     ReadZipEntryError: PyException;
     ModelAlreadyLoadedError: PyException;
     StyleAlreadyLoadedError: PyException;
+    InvalidModelFormatError: PyException;
     InvalidModelDataError: PyException;
     GetSupportedDevicesError: PyException;
     StyleNotFoundError: PyKeyError;
@@ -94,12 +86,6 @@ exceptions! {
     InvalidWordError: PyValueError;
 }
 
-#[pyclass]
-#[derive(Clone)]
-struct VoiceModel {
-    model: voicevox_core::tokio::VoiceModel,
-}
-
 #[pyfunction]
 fn supported_devices(py: Python<'_>) -> PyResult<&PyAny> {
     let class = py
@@ -110,395 +96,6 @@ fn supported_devices(py: Python<'_>) -> PyResult<&PyAny> {
     to_pydantic_dataclass(s, class)
 }
 
-#[pymethods]
-impl VoiceModel {
-    #[staticmethod]
-    fn from_path(
-        py: Python<'_>,
-        #[pyo3(from_py_with = "from_utf8_path")] path: String,
-    ) -> PyResult<&PyAny> {
-        pyo3_asyncio::tokio::future_into_py(py, async move {
-            let model = voicevox_core::tokio::VoiceModel::from_path(path).await;
-            let model = Python::with_gil(|py| model.into_py_result(py))?;
-            Ok(Self { model })
-        })
-    }
-
-    #[getter]
-    fn id(&self) -> &str {
-        self.model.id().raw_voice_model_id()
-    }
-
-    #[getter]
-    fn metas<'py>(&self, py: Python<'py>) -> Vec<&'py PyAny> {
-        to_pydantic_voice_model_meta(self.model.metas(), py).unwrap()
-    }
-}
-
-#[pyclass]
-#[derive(Clone)]
-struct OpenJtalk {
-    open_jtalk: voicevox_core::tokio::OpenJtalk,
-}
-
-#[pymethods]
-impl OpenJtalk {
-    #[allow(clippy::new_ret_no_self)]
-    #[staticmethod]
-    fn new(
-        #[pyo3(from_py_with = "from_utf8_path")] open_jtalk_dict_dir: String,
-        py: Python<'_>,
-    ) -> PyResult<&PyAny> {
-        pyo3_asyncio::tokio::future_into_py(py, async move {
-            let open_jtalk = voicevox_core::tokio::OpenJtalk::new(open_jtalk_dict_dir).await;
-            let open_jtalk = Python::with_gil(|py| open_jtalk.into_py_result(py))?;
-            Ok(Self { open_jtalk })
-        })
-    }
-
-    fn use_user_dict<'py>(&self, user_dict: UserDict, py: Python<'py>) -> PyResult<&'py PyAny> {
-        let this = self.open_jtalk.clone();
-
-        pyo3_asyncio::tokio::future_into_py(py, async move {
-            let result = this.use_user_dict(&user_dict.dict).await;
-            Python::with_gil(|py| result.into_py_result(py))
-        })
-    }
-}
-
-#[pyclass]
-struct Synthesizer {
-    synthesizer: Closable<voicevox_core::tokio::Synthesizer<voicevox_core::tokio::OpenJtalk>, Self>,
-}
-
-#[pymethods]
-impl Synthesizer {
-    #[new]
-    #[pyo3(signature =(
-        open_jtalk,
-        acceleration_mode = InitializeOptions::default().acceleration_mode,
-        cpu_num_threads = InitializeOptions::default().cpu_num_threads,
-    ))]
-    fn new(
-        open_jtalk: OpenJtalk,
-        #[pyo3(from_py_with = "from_acceleration_mode")] acceleration_mode: AccelerationMode,
-        cpu_num_threads: u16,
-    ) -> PyResult<Self> {
-        let synthesizer = voicevox_core::tokio::Synthesizer::new(
-            open_jtalk.open_jtalk.clone(),
-            &InitializeOptions {
-                acceleration_mode,
-                cpu_num_threads,
-            },
-        );
-        let synthesizer = Python::with_gil(|py| synthesizer.into_py_result(py))?;
-        let synthesizer = Closable::new(synthesizer);
-        Ok(Self { synthesizer })
-    }
-
-    fn __repr__(&self) -> &'static str {
-        "Synthesizer { .. }"
-    }
-
-    fn __enter__(slf: PyRef<'_, Self>) -> PyResult<PyRef<'_, Self>> {
-        slf.synthesizer.get()?;
-        Ok(slf)
-    }
-
-    fn __exit__(
-        &mut self,
-        #[allow(unused_variables)] exc_type: &PyAny,
-        #[allow(unused_variables)] exc_value: &PyAny,
-        #[allow(unused_variables)] traceback: &PyAny,
-    ) {
-        self.close();
-    }
-
-    #[getter]
-    fn is_gpu_mode(&self) -> PyResult<bool> {
-        let synthesizer = self.synthesizer.get()?;
-        Ok(synthesizer.is_gpu_mode())
-    }
-
-    #[getter]
-    fn metas<'py>(&self, py: Python<'py>) -> PyResult<Vec<&'py PyAny>> {
-        let synthesizer = self.synthesizer.get()?;
-        to_pydantic_voice_model_meta(&synthesizer.metas(), py)
-    }
-
-    fn load_voice_model<'py>(
-        &mut self,
-        model: &'py PyAny,
-        py: Python<'py>,
-    ) -> PyResult<&'py PyAny> {
-        let model: VoiceModel = model.extract()?;
-        let synthesizer = self.synthesizer.get()?.clone();
-        pyo3_asyncio::tokio::future_into_py(py, async move {
-            let result = synthesizer.load_voice_model(&model.model).await;
-            Python::with_gil(|py| result.into_py_result(py))
-        })
-    }
-
-    fn unload_voice_model(&mut self, voice_model_id: &str, py: Python<'_>) -> PyResult<()> {
-        self.synthesizer
-            .get()?
-            .unload_voice_model(&VoiceModelId::new(voice_model_id.to_string()))
-            .into_py_result(py)
-    }
-
-    fn is_loaded_voice_model(&self, voice_model_id: &str) -> PyResult<bool> {
-        Ok(self
-            .synthesizer
-            .get()?
-            .is_loaded_voice_model(&VoiceModelId::new(voice_model_id.to_string())))
-    }
-
-    fn audio_query_from_kana<'py>(
-        &self,
-        kana: &str,
-        style_id: u32,
-        py: Python<'py>,
-    ) -> PyResult<&'py PyAny> {
-        let synthesizer = self.synthesizer.get()?.clone();
-        let kana = kana.to_owned();
-        pyo3_asyncio::tokio::future_into_py_with_locals(
-            py,
-            pyo3_asyncio::tokio::get_current_locals(py)?,
-            async move {
-                let audio_query = synthesizer
-                    .audio_query_from_kana(&kana, StyleId::new(style_id))
-                    .await;
-
-                Python::with_gil(|py| {
-                    let class = py.import("voicevox_core")?.getattr("AudioQuery")?;
-                    let ret = to_pydantic_dataclass(audio_query.into_py_result(py)?, class)?;
-                    Ok(ret.to_object(py))
-                })
-            },
-        )
-    }
-
-    fn audio_query<'py>(&self, text: &str, style_id: u32, py: Python<'py>) -> PyResult<&'py PyAny> {
-        let synthesizer = self.synthesizer.get()?.clone();
-        let text = text.to_owned();
-        pyo3_asyncio::tokio::future_into_py_with_locals(
-            py,
-            pyo3_asyncio::tokio::get_current_locals(py)?,
-            async move {
-                let audio_query = synthesizer.audio_query(&text, StyleId::new(style_id)).await;
-
-                Python::with_gil(|py| {
-                    let audio_query = audio_query.into_py_result(py)?;
-                    let class = py.import("voicevox_core")?.getattr("AudioQuery")?;
-                    let ret = to_pydantic_dataclass(audio_query, class)?;
-                    Ok(ret.to_object(py))
-                })
-            },
-        )
-    }
-
-    fn create_accent_phrases_from_kana<'py>(
-        &self,
-        kana: &str,
-        style_id: u32,
-        py: Python<'py>,
-    ) -> PyResult<&'py PyAny> {
-        let synthesizer = self.synthesizer.get()?.clone();
-        let kana = kana.to_owned();
-        pyo3_asyncio::tokio::future_into_py_with_locals(
-            py,
-            pyo3_asyncio::tokio::get_current_locals(py)?,
-            async move {
-                let accent_phrases = synthesizer
-                    .create_accent_phrases_from_kana(&kana, StyleId::new(style_id))
-                    .await;
-                Python::with_gil(|py| {
-                    let class = py.import("voicevox_core")?.getattr("AccentPhrase")?;
-                    let accent_phrases = accent_phrases
-                        .into_py_result(py)?
-                        .iter()
-                        .map(|ap| to_pydantic_dataclass(ap, class))
-                        .collect::<PyResult<Vec<_>>>();
-                    let list = PyList::new(py, accent_phrases);
-                    Ok(list.to_object(py))
-                })
-            },
-        )
-    }
-
-    fn create_accent_phrases<'py>(
-        &self,
-        text: &str,
-        style_id: u32,
-        py: Python<'py>,
-    ) -> PyResult<&'py PyAny> {
-        let synthesizer = self.synthesizer.get()?.clone();
-        let text = text.to_owned();
-        pyo3_asyncio::tokio::future_into_py_with_locals(
-            py,
-            pyo3_asyncio::tokio::get_current_locals(py)?,
-            async move {
-                let accent_phrases = synthesizer
-                    .create_accent_phrases(&text, StyleId::new(style_id))
-                    .await;
-                Python::with_gil(|py| {
-                    let class = py.import("voicevox_core")?.getattr("AccentPhrase")?;
-                    let accent_phrases = accent_phrases
-                        .into_py_result(py)?
-                        .iter()
-                        .map(|ap| to_pydantic_dataclass(ap, class))
-                        .collect::<PyResult<Vec<_>>>();
-                    let list = PyList::new(py, accent_phrases);
-                    Ok(list.to_object(py))
-                })
-            },
-        )
-    }
-
-    fn replace_mora_data<'py>(
-        &self,
-        accent_phrases: &'py PyList,
-        style_id: u32,
-        py: Python<'py>,
-    ) -> PyResult<&'py PyAny> {
-        let synthesizer = self.synthesizer.get()?.clone();
-        async_modify_accent_phrases(
-            accent_phrases,
-            StyleId::new(style_id),
-            py,
-            |a, s| async move { synthesizer.replace_mora_data(&a, s).await },
-        )
-    }
-
-    fn replace_phoneme_length<'py>(
-        &self,
-        accent_phrases: &'py PyList,
-        style_id: u32,
-        py: Python<'py>,
-    ) -> PyResult<&'py PyAny> {
-        let synthesizer = self.synthesizer.get()?.clone();
-        async_modify_accent_phrases(
-            accent_phrases,
-            StyleId::new(style_id),
-            py,
-            |a, s| async move { synthesizer.replace_phoneme_length(&a, s).await },
-        )
-    }
-
-    fn replace_mora_pitch<'py>(
-        &self,
-        accent_phrases: &'py PyList,
-        style_id: u32,
-        py: Python<'py>,
-    ) -> PyResult<&'py PyAny> {
-        let synthesizer = self.synthesizer.get()?.clone();
-        async_modify_accent_phrases(
-            accent_phrases,
-            StyleId::new(style_id),
-            py,
-            |a, s| async move { synthesizer.replace_mora_pitch(&a, s).await },
-        )
-    }
-
-    #[pyo3(signature=(audio_query,style_id,enable_interrogative_upspeak = TtsOptions::default().enable_interrogative_upspeak))]
-    fn synthesis<'py>(
-        &self,
-        #[pyo3(from_py_with = "from_dataclass")] audio_query: AudioQueryModel,
-        style_id: u32,
-        enable_interrogative_upspeak: bool,
-        py: Python<'py>,
-    ) -> PyResult<&'py PyAny> {
-        let synthesizer = self.synthesizer.get()?.clone();
-        pyo3_asyncio::tokio::future_into_py_with_locals(
-            py,
-            pyo3_asyncio::tokio::get_current_locals(py)?,
-            async move {
-                let wav = synthesizer
-                    .synthesis(
-                        &audio_query,
-                        StyleId::new(style_id),
-                        &SynthesisOptions {
-                            enable_interrogative_upspeak,
-                        },
-                    )
-                    .await;
-                Python::with_gil(|py| {
-                    let wav = wav.into_py_result(py)?;
-                    Ok(PyBytes::new(py, &wav).to_object(py))
-                })
-            },
-        )
-    }
-
-    #[pyo3(signature=(
-        kana,
-        style_id,
-        enable_interrogative_upspeak = TtsOptions::default().enable_interrogative_upspeak
-    ))]
-    fn tts_from_kana<'py>(
-        &self,
-        kana: &str,
-        style_id: u32,
-        enable_interrogative_upspeak: bool,
-        py: Python<'py>,
-    ) -> PyResult<&'py PyAny> {
-        let style_id = StyleId::new(style_id);
-        let options = TtsOptions {
-            enable_interrogative_upspeak,
-        };
-        let synthesizer = self.synthesizer.get()?.clone();
-        let kana = kana.to_owned();
-        pyo3_asyncio::tokio::future_into_py_with_locals(
-            py,
-            pyo3_asyncio::tokio::get_current_locals(py)?,
-            async move {
-                let wav = synthesizer.tts_from_kana(&kana, style_id, &options).await;
-
-                Python::with_gil(|py| {
-                    let wav = wav.into_py_result(py)?;
-                    Ok(PyBytes::new(py, &wav).to_object(py))
-                })
-            },
-        )
-    }
-
-    #[pyo3(signature=(
-        text,
-        style_id,
-        enable_interrogative_upspeak = TtsOptions::default().enable_interrogative_upspeak
-    ))]
-    fn tts<'py>(
-        &self,
-        text: &str,
-        style_id: u32,
-        enable_interrogative_upspeak: bool,
-        py: Python<'py>,
-    ) -> PyResult<&'py PyAny> {
-        let style_id = StyleId::new(style_id);
-        let options = TtsOptions {
-            enable_interrogative_upspeak,
-        };
-        let synthesizer = self.synthesizer.get()?.clone();
-        let text = text.to_owned();
-        pyo3_asyncio::tokio::future_into_py_with_locals(
-            py,
-            pyo3_asyncio::tokio::get_current_locals(py)?,
-            async move {
-                let wav = synthesizer.tts(&text, style_id, &options).await;
-
-                Python::with_gil(|py| {
-                    let wav = wav.into_py_result(py)?;
-                    Ok(PyBytes::new(py, &wav).to_object(py))
-                })
-            },
-        )
-    }
-
-    fn close(&mut self) {
-        self.synthesizer.close()
-    }
-}
-
 struct Closable<T, C: PyTypeInfo> {
     content: MaybeClosed<T>,
     marker: PhantomData<C>,
@@ -551,95 +148,13 @@ fn _to_zenkaku(text: &str) -> PyResult<String> {
     Ok(voicevox_core::__internal::to_zenkaku(text))
 }
 
-#[pyclass]
-#[derive(Default, Debug, Clone)]
-struct UserDict {
-    dict: Arc<voicevox_core::tokio::UserDict>,
-}
-
-#[pymethods]
-impl UserDict {
-    #[new]
-    fn new() -> Self {
-        Self::default()
-    }
-
-    fn load<'py>(&self, path: &str, py: Python<'py>) -> PyResult<&'py PyAny> {
-        let this = self.dict.clone();
-        let path = path.to_owned();
-
-        pyo3_asyncio::tokio::future_into_py(py, async move {
-            let result = this.load(&path).await;
-            Python::with_gil(|py| result.into_py_result(py))
-        })
-    }
-
-    fn save<'py>(&self, path: &str, py: Python<'py>) -> PyResult<&'py PyAny> {
-        let this = self.dict.clone();
-        let path = path.to_owned();
-
-        pyo3_asyncio::tokio::future_into_py(py, async move {
-            let result = this.save(&path).await;
-            Python::with_gil(|py| result.into_py_result(py))
-        })
-    }
-
-    fn add_word(
-        &mut self,
-        #[pyo3(from_py_with = "to_rust_user_dict_word")] word: UserDictWord,
-        py: Python<'_>,
-    ) -> PyResult<PyObject> {
-        let uuid = self.dict.add_word(word).into_py_result(py)?;
-
-        to_py_uuid(py, uuid)
-    }
-
-    fn update_word(
-        &mut self,
-        #[pyo3(from_py_with = "to_rust_uuid")] word_uuid: Uuid,
-        #[pyo3(from_py_with = "to_rust_user_dict_word")] word: UserDictWord,
-        py: Python<'_>,
-    ) -> PyResult<()> {
-        self.dict.update_word(word_uuid, word).into_py_result(py)?;
-        Ok(())
-    }
-
-    fn remove_word(
-        &mut self,
-        #[pyo3(from_py_with = "to_rust_uuid")] word_uuid: Uuid,
-        py: Python<'_>,
-    ) -> PyResult<()> {
-        self.dict.remove_word(word_uuid).into_py_result(py)?;
-        Ok(())
-    }
-
-    fn import_dict(&mut self, other: &UserDict, py: Python<'_>) -> PyResult<()> {
-        self.dict.import(&other.dict).into_py_result(py)?;
-        Ok(())
-    }
-
-    #[getter]
-    fn words<'py>(&self, py: Python<'py>) -> PyResult<&'py PyDict> {
-        let words = self.dict.with_words(|words| {
-            words
-                .iter()
-                .map(|(&uuid, word)| {
-                    let uuid = to_py_uuid(py, uuid)?;
-                    let word = to_py_user_dict_word(py, word)?;
-                    Ok((uuid, word))
-                })
-                .collect::<PyResult<Vec<_>>>()
-        })?;
-        Ok(words.into_py_dict(py))
-    }
-}
-
 mod blocking {
-    use std::sync::Arc;
+    use std::{path::PathBuf, sync::Arc};
 
+    use camino::Utf8PathBuf;
     use pyo3::{
         pyclass, pymethods,
-        types::{IntoPyDict as _, PyBytes, PyDict, PyList},
+        types::{IntoPyDict as _, PyBytes, PyDict, PyList, PyString},
         PyAny, PyObject, PyRef, PyResult, Python,
     };
     use uuid::Uuid;
@@ -659,10 +174,7 @@ mod blocking {
     #[pymethods]
     impl VoiceModel {
         #[staticmethod]
-        fn from_path(
-            py: Python<'_>,
-            #[pyo3(from_py_with = "crate::convert::from_utf8_path")] path: String,
-        ) -> PyResult<Self> {
+        fn from_path(py: Python<'_>, path: PathBuf) -> PyResult<Self> {
             let model = voicevox_core::blocking::VoiceModel::from_path(path).into_py_result(py)?;
             Ok(Self { model })
         }
@@ -688,7 +200,7 @@ mod blocking {
     impl OpenJtalk {
         #[new]
         fn new(
-            #[pyo3(from_py_with = "super::from_utf8_path")] open_jtalk_dict_dir: String,
+            #[pyo3(from_py_with = "super::from_utf8_path")] open_jtalk_dict_dir: Utf8PathBuf,
             py: Python<'_>,
         ) -> PyResult<Self> {
             let open_jtalk =
@@ -784,7 +296,12 @@ mod blocking {
                 .into_py_result(py)
         }
 
-        fn is_loaded_voice_model(&self, voice_model_id: &str) -> PyResult<bool> {
+        // C APIの挙動と一貫性を持たせる。
+        fn is_loaded_voice_model(&self, voice_model_id: &PyString) -> PyResult<bool> {
+            let Ok(voice_model_id) = voice_model_id.to_str() else {
+                // 与えられたIDがUTF-8ではない場合、それに対応する`VoicdModel`は確実に存在しない
+                return Ok(false);
+            };
             Ok(self
                 .synthesizer
                 .get()?
@@ -1055,3 +572,512 @@ mod blocking {
         }
     }
 }
+
+mod asyncio {
+    use std::{path::PathBuf, sync::Arc};
+
+    use camino::Utf8PathBuf;
+    use pyo3::{
+        pyclass, pymethods,
+        types::{IntoPyDict as _, PyBytes, PyDict, PyList, PyString},
+        PyAny, PyObject, PyRef, PyResult, Python, ToPyObject as _,
+    };
+    use uuid::Uuid;
+    use voicevox_core::{
+        AccelerationMode, AudioQueryModel, InitializeOptions, StyleId, SynthesisOptions,
+        TtsOptions, UserDictWord, VoiceModelId,
+    };
+
+    use crate::{convert::VoicevoxCoreResultExt as _, Closable};
+
+    #[pyclass]
+    #[derive(Clone)]
+    pub(crate) struct VoiceModel {
+        model: voicevox_core::tokio::VoiceModel,
+    }
+
+    #[pymethods]
+    impl VoiceModel {
+        #[staticmethod]
+        fn from_path(py: Python<'_>, path: PathBuf) -> PyResult<&PyAny> {
+            pyo3_asyncio::tokio::future_into_py(py, async move {
+                let model = voicevox_core::tokio::VoiceModel::from_path(path).await;
+                let model = Python::with_gil(|py| model.into_py_result(py))?;
+                Ok(Self { model })
+            })
+        }
+
+        #[getter]
+        fn id(&self) -> &str {
+            self.model.id().raw_voice_model_id()
+        }
+
+        #[getter]
+        fn metas<'py>(&self, py: Python<'py>) -> Vec<&'py PyAny> {
+            crate::convert::to_pydantic_voice_model_meta(self.model.metas(), py).unwrap()
+        }
+    }
+
+    #[pyclass]
+    #[derive(Clone)]
+    pub(crate) struct OpenJtalk {
+        open_jtalk: voicevox_core::tokio::OpenJtalk,
+    }
+
+    #[pymethods]
+    impl OpenJtalk {
+        #[allow(clippy::new_ret_no_self)]
+        #[staticmethod]
+        fn new(
+            #[pyo3(from_py_with = "crate::convert::from_utf8_path")]
+            open_jtalk_dict_dir: Utf8PathBuf,
+            py: Python<'_>,
+        ) -> PyResult<&PyAny> {
+            pyo3_asyncio::tokio::future_into_py(py, async move {
+                let open_jtalk = voicevox_core::tokio::OpenJtalk::new(open_jtalk_dict_dir).await;
+                let open_jtalk = Python::with_gil(|py| open_jtalk.into_py_result(py))?;
+                Ok(Self { open_jtalk })
+            })
+        }
+
+        fn use_user_dict<'py>(&self, user_dict: UserDict, py: Python<'py>) -> PyResult<&'py PyAny> {
+            let this = self.open_jtalk.clone();
+
+            pyo3_asyncio::tokio::future_into_py(py, async move {
+                let result = this.use_user_dict(&user_dict.dict).await;
+                Python::with_gil(|py| result.into_py_result(py))
+            })
+        }
+    }
+
+    #[pyclass]
+    pub(crate) struct Synthesizer {
+        synthesizer:
+            Closable<voicevox_core::tokio::Synthesizer<voicevox_core::tokio::OpenJtalk>, Self>,
+    }
+
+    #[pymethods]
+    impl Synthesizer {
+        #[new]
+        #[pyo3(signature =(
+            open_jtalk,
+            acceleration_mode = InitializeOptions::default().acceleration_mode,
+            cpu_num_threads = InitializeOptions::default().cpu_num_threads,
+        ))]
+        fn new(
+            open_jtalk: OpenJtalk,
+            #[pyo3(from_py_with = "crate::convert::from_acceleration_mode")]
+            acceleration_mode: AccelerationMode,
+            cpu_num_threads: u16,
+        ) -> PyResult<Self> {
+            let synthesizer = voicevox_core::tokio::Synthesizer::new(
+                open_jtalk.open_jtalk.clone(),
+                &InitializeOptions {
+                    acceleration_mode,
+                    cpu_num_threads,
+                },
+            );
+            let synthesizer = Python::with_gil(|py| synthesizer.into_py_result(py))?;
+            let synthesizer = Closable::new(synthesizer);
+            Ok(Self { synthesizer })
+        }
+
+        fn __repr__(&self) -> &'static str {
+            "Synthesizer { .. }"
+        }
+
+        fn __enter__(slf: PyRef<'_, Self>) -> PyResult<PyRef<'_, Self>> {
+            slf.synthesizer.get()?;
+            Ok(slf)
+        }
+
+        fn __exit__(
+            &mut self,
+            #[allow(unused_variables)] exc_type: &PyAny,
+            #[allow(unused_variables)] exc_value: &PyAny,
+            #[allow(unused_variables)] traceback: &PyAny,
+        ) {
+            self.close();
+        }
+
+        #[getter]
+        fn is_gpu_mode(&self) -> PyResult<bool> {
+            let synthesizer = self.synthesizer.get()?;
+            Ok(synthesizer.is_gpu_mode())
+        }
+
+        #[getter]
+        fn metas<'py>(&self, py: Python<'py>) -> PyResult<Vec<&'py PyAny>> {
+            let synthesizer = self.synthesizer.get()?;
+            crate::convert::to_pydantic_voice_model_meta(&synthesizer.metas(), py)
+        }
+
+        fn load_voice_model<'py>(
+            &mut self,
+            model: &'py PyAny,
+            py: Python<'py>,
+        ) -> PyResult<&'py PyAny> {
+            let model: VoiceModel = model.extract()?;
+            let synthesizer = self.synthesizer.get()?.clone();
+            pyo3_asyncio::tokio::future_into_py(py, async move {
+                let result = synthesizer.load_voice_model(&model.model).await;
+                Python::with_gil(|py| result.into_py_result(py))
+            })
+        }
+
+        fn unload_voice_model(&mut self, voice_model_id: &str, py: Python<'_>) -> PyResult<()> {
+            self.synthesizer
+                .get()?
+                .unload_voice_model(&VoiceModelId::new(voice_model_id.to_string()))
+                .into_py_result(py)
+        }
+
+        // C APIの挙動と一貫性を持たせる。
+        fn is_loaded_voice_model(&self, voice_model_id: &PyString) -> PyResult<bool> {
+            let Ok(voice_model_id) = voice_model_id.to_str() else {
+                // 与えられたIDがUTF-8ではない場合、それに対応する`VoicdModel`は確実に存在しない
+                return Ok(false);
+            };
+            Ok(self
+                .synthesizer
+                .get()?
+                .is_loaded_voice_model(&VoiceModelId::new(voice_model_id.to_string())))
+        }
+
+        fn audio_query_from_kana<'py>(
+            &self,
+            kana: &str,
+            style_id: u32,
+            py: Python<'py>,
+        ) -> PyResult<&'py PyAny> {
+            let synthesizer = self.synthesizer.get()?.clone();
+            let kana = kana.to_owned();
+            pyo3_asyncio::tokio::future_into_py_with_locals(
+                py,
+                pyo3_asyncio::tokio::get_current_locals(py)?,
+                async move {
+                    let audio_query = synthesizer
+                        .audio_query_from_kana(&kana, StyleId::new(style_id))
+                        .await;
+
+                    Python::with_gil(|py| {
+                        let class = py.import("voicevox_core")?.getattr("AudioQuery")?;
+                        let ret = crate::convert::to_pydantic_dataclass(
+                            audio_query.into_py_result(py)?,
+                            class,
+                        )?;
+                        Ok(ret.to_object(py))
+                    })
+                },
+            )
+        }
+
+        fn audio_query<'py>(
+            &self,
+            text: &str,
+            style_id: u32,
+            py: Python<'py>,
+        ) -> PyResult<&'py PyAny> {
+            let synthesizer = self.synthesizer.get()?.clone();
+            let text = text.to_owned();
+            pyo3_asyncio::tokio::future_into_py_with_locals(
+                py,
+                pyo3_asyncio::tokio::get_current_locals(py)?,
+                async move {
+                    let audio_query = synthesizer.audio_query(&text, StyleId::new(style_id)).await;
+
+                    Python::with_gil(|py| {
+                        let audio_query = audio_query.into_py_result(py)?;
+                        let class = py.import("voicevox_core")?.getattr("AudioQuery")?;
+                        let ret = crate::convert::to_pydantic_dataclass(audio_query, class)?;
+                        Ok(ret.to_object(py))
+                    })
+                },
+            )
+        }
+
+        fn create_accent_phrases_from_kana<'py>(
+            &self,
+            kana: &str,
+            style_id: u32,
+            py: Python<'py>,
+        ) -> PyResult<&'py PyAny> {
+            let synthesizer = self.synthesizer.get()?.clone();
+            let kana = kana.to_owned();
+            pyo3_asyncio::tokio::future_into_py_with_locals(
+                py,
+                pyo3_asyncio::tokio::get_current_locals(py)?,
+                async move {
+                    let accent_phrases = synthesizer
+                        .create_accent_phrases_from_kana(&kana, StyleId::new(style_id))
+                        .await;
+                    Python::with_gil(|py| {
+                        let class = py.import("voicevox_core")?.getattr("AccentPhrase")?;
+                        let accent_phrases = accent_phrases
+                            .into_py_result(py)?
+                            .iter()
+                            .map(|ap| crate::convert::to_pydantic_dataclass(ap, class))
+                            .collect::<PyResult<Vec<_>>>();
+                        let list = PyList::new(py, accent_phrases);
+                        Ok(list.to_object(py))
+                    })
+                },
+            )
+        }
+
+        fn create_accent_phrases<'py>(
+            &self,
+            text: &str,
+            style_id: u32,
+            py: Python<'py>,
+        ) -> PyResult<&'py PyAny> {
+            let synthesizer = self.synthesizer.get()?.clone();
+            let text = text.to_owned();
+            pyo3_asyncio::tokio::future_into_py_with_locals(
+                py,
+                pyo3_asyncio::tokio::get_current_locals(py)?,
+                async move {
+                    let accent_phrases = synthesizer
+                        .create_accent_phrases(&text, StyleId::new(style_id))
+                        .await;
+                    Python::with_gil(|py| {
+                        let class = py.import("voicevox_core")?.getattr("AccentPhrase")?;
+                        let accent_phrases = accent_phrases
+                            .into_py_result(py)?
+                            .iter()
+                            .map(|ap| crate::convert::to_pydantic_dataclass(ap, class))
+                            .collect::<PyResult<Vec<_>>>();
+                        let list = PyList::new(py, accent_phrases);
+                        Ok(list.to_object(py))
+                    })
+                },
+            )
+        }
+
+        fn replace_mora_data<'py>(
+            &self,
+            accent_phrases: &'py PyList,
+            style_id: u32,
+            py: Python<'py>,
+        ) -> PyResult<&'py PyAny> {
+            let synthesizer = self.synthesizer.get()?.clone();
+            crate::convert::async_modify_accent_phrases(
+                accent_phrases,
+                StyleId::new(style_id),
+                py,
+                |a, s| async move { synthesizer.replace_mora_data(&a, s).await },
+            )
+        }
+
+        fn replace_phoneme_length<'py>(
+            &self,
+            accent_phrases: &'py PyList,
+            style_id: u32,
+            py: Python<'py>,
+        ) -> PyResult<&'py PyAny> {
+            let synthesizer = self.synthesizer.get()?.clone();
+            crate::convert::async_modify_accent_phrases(
+                accent_phrases,
+                StyleId::new(style_id),
+                py,
+                |a, s| async move { synthesizer.replace_phoneme_length(&a, s).await },
+            )
+        }
+
+        fn replace_mora_pitch<'py>(
+            &self,
+            accent_phrases: &'py PyList,
+            style_id: u32,
+            py: Python<'py>,
+        ) -> PyResult<&'py PyAny> {
+            let synthesizer = self.synthesizer.get()?.clone();
+            crate::convert::async_modify_accent_phrases(
+                accent_phrases,
+                StyleId::new(style_id),
+                py,
+                |a, s| async move { synthesizer.replace_mora_pitch(&a, s).await },
+            )
+        }
+
+        #[pyo3(signature=(audio_query,style_id,enable_interrogative_upspeak = TtsOptions::default().enable_interrogative_upspeak))]
+        fn synthesis<'py>(
+            &self,
+            #[pyo3(from_py_with = "crate::convert::from_dataclass")] audio_query: AudioQueryModel,
+            style_id: u32,
+            enable_interrogative_upspeak: bool,
+            py: Python<'py>,
+        ) -> PyResult<&'py PyAny> {
+            let synthesizer = self.synthesizer.get()?.clone();
+            pyo3_asyncio::tokio::future_into_py_with_locals(
+                py,
+                pyo3_asyncio::tokio::get_current_locals(py)?,
+                async move {
+                    let wav = synthesizer
+                        .synthesis(
+                            &audio_query,
+                            StyleId::new(style_id),
+                            &SynthesisOptions {
+                                enable_interrogative_upspeak,
+                            },
+                        )
+                        .await;
+                    Python::with_gil(|py| {
+                        let wav = wav.into_py_result(py)?;
+                        Ok(PyBytes::new(py, &wav).to_object(py))
+                    })
+                },
+            )
+        }
+
+        #[pyo3(signature=(
+            kana,
+            style_id,
+            enable_interrogative_upspeak = TtsOptions::default().enable_interrogative_upspeak
+        ))]
+        fn tts_from_kana<'py>(
+            &self,
+            kana: &str,
+            style_id: u32,
+            enable_interrogative_upspeak: bool,
+            py: Python<'py>,
+        ) -> PyResult<&'py PyAny> {
+            let style_id = StyleId::new(style_id);
+            let options = TtsOptions {
+                enable_interrogative_upspeak,
+            };
+            let synthesizer = self.synthesizer.get()?.clone();
+            let kana = kana.to_owned();
+            pyo3_asyncio::tokio::future_into_py_with_locals(
+                py,
+                pyo3_asyncio::tokio::get_current_locals(py)?,
+                async move {
+                    let wav = synthesizer.tts_from_kana(&kana, style_id, &options).await;
+
+                    Python::with_gil(|py| {
+                        let wav = wav.into_py_result(py)?;
+                        Ok(PyBytes::new(py, &wav).to_object(py))
+                    })
+                },
+            )
+        }
+
+        #[pyo3(signature=(
+            text,
+            style_id,
+            enable_interrogative_upspeak = TtsOptions::default().enable_interrogative_upspeak
+        ))]
+        fn tts<'py>(
+            &self,
+            text: &str,
+            style_id: u32,
+            enable_interrogative_upspeak: bool,
+            py: Python<'py>,
+        ) -> PyResult<&'py PyAny> {
+            let style_id = StyleId::new(style_id);
+            let options = TtsOptions {
+                enable_interrogative_upspeak,
+            };
+            let synthesizer = self.synthesizer.get()?.clone();
+            let text = text.to_owned();
+            pyo3_asyncio::tokio::future_into_py_with_locals(
+                py,
+                pyo3_asyncio::tokio::get_current_locals(py)?,
+                async move {
+                    let wav = synthesizer.tts(&text, style_id, &options).await;
+
+                    Python::with_gil(|py| {
+                        let wav = wav.into_py_result(py)?;
+                        Ok(PyBytes::new(py, &wav).to_object(py))
+                    })
+                },
+            )
+        }
+
+        fn close(&mut self) {
+            self.synthesizer.close()
+        }
+    }
+
+    #[pyclass]
+    #[derive(Default, Debug, Clone)]
+    pub(crate) struct UserDict {
+        dict: Arc<voicevox_core::tokio::UserDict>,
+    }
+
+    #[pymethods]
+    impl UserDict {
+        #[new]
+        fn new() -> Self {
+            Self::default()
+        }
+
+        fn load<'py>(&self, path: &str, py: Python<'py>) -> PyResult<&'py PyAny> {
+            let this = self.dict.clone();
+            let path = path.to_owned();
+
+            pyo3_asyncio::tokio::future_into_py(py, async move {
+                let result = this.load(&path).await;
+                Python::with_gil(|py| result.into_py_result(py))
+            })
+        }
+
+        fn save<'py>(&self, path: &str, py: Python<'py>) -> PyResult<&'py PyAny> {
+            let this = self.dict.clone();
+            let path = path.to_owned();
+
+            pyo3_asyncio::tokio::future_into_py(py, async move {
+                let result = this.save(&path).await;
+                Python::with_gil(|py| result.into_py_result(py))
+            })
+        }
+
+        fn add_word(
+            &mut self,
+            #[pyo3(from_py_with = "crate::convert::to_rust_user_dict_word")] word: UserDictWord,
+            py: Python<'_>,
+        ) -> PyResult<PyObject> {
+            let uuid = self.dict.add_word(word).into_py_result(py)?;
+
+            crate::convert::to_py_uuid(py, uuid)
+        }
+
+        fn update_word(
+            &mut self,
+            #[pyo3(from_py_with = "crate::convert::to_rust_uuid")] word_uuid: Uuid,
+            #[pyo3(from_py_with = "crate::convert::to_rust_user_dict_word")] word: UserDictWord,
+            py: Python<'_>,
+        ) -> PyResult<()> {
+            self.dict.update_word(word_uuid, word).into_py_result(py)?;
+            Ok(())
+        }
+
+        fn remove_word(
+            &mut self,
+            #[pyo3(from_py_with = "crate::convert::to_rust_uuid")] word_uuid: Uuid,
+            py: Python<'_>,
+        ) -> PyResult<()> {
+            self.dict.remove_word(word_uuid).into_py_result(py)?;
+            Ok(())
+        }
+
+        fn import_dict(&mut self, other: &UserDict, py: Python<'_>) -> PyResult<()> {
+            self.dict.import(&other.dict).into_py_result(py)?;
+            Ok(())
+        }
+
+        #[getter]
+        fn words<'py>(&self, py: Python<'py>) -> PyResult<&'py PyDict> {
+            let words = self.dict.with_words(|words| {
+                words
+                    .iter()
+                    .map(|(&uuid, word)| {
+                        let uuid = crate::convert::to_py_uuid(py, uuid)?;
+                        let word = crate::convert::to_py_user_dict_word(py, word)?;
+                        Ok((uuid, word))
+                    })
+                    .collect::<PyResult<Vec<_>>>()
+            })?;
+            Ok(words.into_py_dict(py))
+        }
+    }
+}
diff --git a/crates/xtask/Cargo.toml b/crates/xtask/Cargo.toml
index fd4ea9a0f..63d14515a 100644
--- a/crates/xtask/Cargo.toml
+++ b/crates/xtask/Cargo.toml
@@ -1,8 +1,6 @@
 [package]
 name = "xtask"
-version = "0.0.0"
 edition.workspace = true
-publish.workspace = true
 
 [dependencies]
 cbindgen.workspace = true
diff --git a/docs/vvm.md b/docs/vvm.md
index 572ffee1a..cc7b9232e 100644
--- a/docs/vvm.md
+++ b/docs/vvm.md
@@ -1,9 +1,24 @@
 # VVM ファイル
 
-音声合成するために必要な onnx モデルファイルなどがまとめられた zip 形式のファイル。
-root パスに確定で`manifest.json`を持つ。
+***VVM ファイル*** は、音声合成に必要な声情報を含むファイルである。  
+
+より正確には、音声合成のモデル重みファイルなどを含む zip 形式のアーカイブである。拡張子は `.vvm`。  
+以下の内部ディレクトリ構造を持つ：  
+
+- `{filename}.vvm`
+  - `manifest.json`
+  - `metas.json`
+  - <duration_model>
+  - <intonation_model>
+  - <decode_model>
+
+model は `.onnx` や `.bin` など様々ある。例えば `sample.vvm` は `predict_duration.onnx` / `predict_intonation.onnx` / `decode.onnx` を含む。  
+
+VOICEVOX OSS が提供する VVM には `sample.vvm` がある（ビルドを行うと `crates/test_util/data/model/sample.vvm` が生成される）。  
+製品版 VOICEVOX で利用される VVM は [こちらのレポジトリ](https://github.com/VOICEVOX/voicevox_fat_resource/tree/main/core/model) で確認できる。  
 
 ## マニフェストファイル
 
-ファイルの構成や、onnx モデルなどを読み込む・利用するのに必要な情報を記述した json ファイル。
-root パスに`manifest.json`として配置する。
+VVM における ***マニフェストファイル*** は、VVM ファイルの構成や、onnx モデルなどを読み込む・利用するのに必要な情報を記述したファイルである。  
+json 形式で記述され、root パスに`manifest.json`として配置する。  
+[VOICEVOX CORE のソースコード](https://github.com/VOICEVOX/voicevox_core/blob/main/crates/voicevox_core/src/manifest.rs) 内で `Manifest` 構造体としてスキーマが定義されている。  
diff --git a/example/kotlin/README.md b/example/kotlin/README.md
index 908bdd51f..3bcdafc94 100644
--- a/example/kotlin/README.md
+++ b/example/kotlin/README.md
@@ -57,9 +57,9 @@ Options:
 ## 実行例
 
 ```console
-❯ ./gradlew run --args="--vvm ../../model/sample.vvm"
+❯ ./gradlew run --args="--vvm ../../crates/test_util/data/model/sample.vvm"
 Inititalizing: AUTO, ./open_jtalk_dic_utf_8-1.11
-Loading: ../../model/sample.vvm
+Loading: ../../crates/test_util/data/model/sample.vvm
 Creating an AudioQuery from the text: この音声は、ボイスボックスを使用して、出力されています。
 Synthesizing...
 Saving the audio to ./output.wav
diff --git a/example/python/README.md b/example/python/README.md
index 392896030..97303eb81 100644
--- a/example/python/README.md
+++ b/example/python/README.md
@@ -69,12 +69,12 @@ optional arguments:
 ## 実行例
 
 ```console
-❯ python ./run.py ../../model/sample.vvm
+❯ python ./run.py ../../crates/test_util/data/model/sample.vvm
 [DEBUG] __main__: voicevox_core.supported_devices()=SupportedDevices(cpu=True, cuda=False, dml=False)
 [INFO] __main__: Initializing (acceleration_mode=<AccelerationMode.AUTO: 'AUTO'>, open_jtalk_dict_dir=PosixPath('open_jtalk_dic_utf_8-1.11'))
 [DEBUG] __main__: synthesizer.metas=[]
 [DEBUG] __main__: synthesizer.is_gpu_mode=False
-[INFO] __main__: Loading `../../model/sample.vvm`
+[INFO] __main__: Loading `../../crates/test_util/data/model/sample.vvm`
 [INFO] __main__: Creating an AudioQuery from 'この音声は、ボイスボックスを使用して、出力されています。'
 [INFO] __main__: Synthesizing with {"accent_phrases": [{"moras": [{"text": "コ", "consonant": "k", "consonant_length": 0.0556899, "vowel": "o", "vowel_length": 0.075180575, "pitch": 5.542309}, {"text": "ノ", "consonant": "n", "consonant_length": 0.06551014, "vowel": "o", "vowel_length": 0.09984577, "pitch": 5.6173983}], "accent": 2, "pause_mora": null, "is_interrogative": false}, {"moras": [{"text": "オ", "consonant": null, "consonant_length": null, "vowel": "o", "vowel_length": 0.116150305, "pitch": 5.7063766}, {"text": "ン", "consonant": null, "consonant_length": null, "vowel": "N", "vowel_length": 0.044380233, "pitch": 5.785717}, {"text": "セ", "consonant": "s", "consonant_length": 0.07719758, "vowel": "e", "vowel_length": 0.08653869, "pitch": 5.662092}, {"text": "エ", "consonant": null, "consonant_length": null, "vowel": "e", "vowel_length": 0.08311573, "pitch": 5.532917}, {"text": "ワ", "consonant": "w", "consonant_length": 0.06373148, "vowel": "a", "vowel_length": 0.16219379, "pitch": 5.293258}], "accent": 1, "pause_mora": {"text": "、", "consonant": null, "consonant_length": null, "vowel": "pau", "vowel_length": 0.35826492, "pitch": 0.0}, "is_interrogative": false}, {"moras": [{"text": "ボ", "consonant": "b", "consonant_length": 0.047082342, "vowel": "o", "vowel_length": 0.12611786, "pitch": 5.583892}, {"text": "イ", "consonant": null, "consonant_length": null, "vowel": "i", "vowel_length": 0.059451744, "pitch": 5.7947493}, {"text": "ス", "consonant": "s", "consonant_length": 0.089278996, "vowel": "u", "vowel_length": 0.11847979, "pitch": 5.818695}, {"text": "ボ", "consonant": "b", "consonant_length": 0.06535433, "vowel": "o", "vowel_length": 0.120458946, "pitch": 5.7965107}, {"text": "ッ", "consonant": null, "consonant_length": null, "vowel": "cl", "vowel_length": 0.06940381, "pitch": 0.0}, {"text": "ク", "consonant": "k", "consonant_length": 0.053739145, "vowel": "U", "vowel_length": 0.05395376, "pitch": 0.0}, {"text": "ス", "consonant": "s", "consonant_length": 0.10222931, "vowel": "u", "vowel_length": 0.071811065, "pitch": 5.8024883}, {"text": "オ", "consonant": null, "consonant_length": null, "vowel": "o", "vowel_length": 0.11092262, "pitch": 5.5036163}], "accent": 4, "pause_mora": null, "is_interrogative": false}, {"moras": [{"text": "シ", "consonant": "sh", "consonant_length": 0.09327768, "vowel": "i", "vowel_length": 0.09126951, "pitch": 5.369444}, {"text": "ヨ", "consonant": "y", "consonant_length": 0.06251812, "vowel": "o", "vowel_length": 0.07805054, "pitch": 5.5021667}, {"text": "オ", "consonant": null, "consonant_length": null, "vowel": "o", "vowel_length": 0.09904325, "pitch": 5.5219536}], "accent": 3, "pause_mora": null, "is_interrogative": false}, {"moras": [{"text": "シ", "consonant": "sh", "consonant_length": 0.04879771, "vowel": "I", "vowel_length": 0.06514315, "pitch": 0.0}, {"text": "テ", "consonant": "t", "consonant_length": 0.0840496, "vowel": "e", "vowel_length": 0.19438823, "pitch": 5.4875555}], "accent": 2, "pause_mora": {"text": "、", "consonant": null, "consonant_length": null, "vowel": "pau", "vowel_length": 0.35208154, "pitch": 0.0}, "is_interrogative": false}, {"moras": [{"text": "シュ", "consonant": "sh", "consonant_length": 0.05436731, "vowel": "U", "vowel_length": 0.06044446, "pitch": 0.0}, {"text": "ツ", "consonant": "ts", "consonant_length": 0.102865085, "vowel": "u", "vowel_length": 0.057028636, "pitch": 5.6402535}, {"text": "リョ", "consonant": "ry", "consonant_length": 0.058293864, "vowel": "o", "vowel_length": 0.080050275, "pitch": 5.6997967}, {"text": "ク", "consonant": "k", "consonant_length": 0.054767884, "vowel": "U", "vowel_length": 0.042932786, "pitch": 0.0}], "accent": 2, "pause_mora": null, "is_interrogative": false}, {"moras": [{"text": "サ", "consonant": "s", "consonant_length": 0.08067487, "vowel": "a", "vowel_length": 0.07377973, "pitch": 5.652378}, {"text": "レ", "consonant": "r", "consonant_length": 0.040600352, "vowel": "e", "vowel_length": 0.079322875, "pitch": 5.6290326}, {"text": "テ", "consonant": "t", "consonant_length": 0.06773268, "vowel": "e", "vowel_length": 0.08347456, "pitch": 5.6427326}], "accent": 3, "pause_mora": null, "is_interrogative": false}, {"moras": [{"text": "イ", "consonant": null, "consonant_length": null, "vowel": "i", "vowel_length": 0.07542324, "pitch": 5.641289}, {"text": "マ", "consonant": "m", "consonant_length": 0.066299975, "vowel": "a", "vowel_length": 0.107257664, "pitch": 5.6201453}, {"text": "ス", "consonant": "s", "consonant_length": 0.07186453, "vowel": "U", "vowel_length": 0.1163103, "pitch": 0.0}], "accent": 2, "pause_mora": null, "is_interrogative": false}], "speed_scale": 1.0, "pitch_scale": 0.0, "intonation_scale": 1.0, "volume_scale": 1.0, "pre_phoneme_length": 0.1, "post_phoneme_length": 0.1, "output_sampling_rate": 24000, "output_stereo": false, "kana": "コノ'/オ'ンセエワ、ボイスボ'ッ_クスオ/シヨオ'/_シテ'、_シュツ' リョ_ク/サレテ'/イマ'_ス"}
 [INFO] __main__: Wrote `output.wav`
diff --git a/model/sample.vvm b/model/sample.vvm
deleted file mode 100644
index 48d23745d..000000000
Binary files a/model/sample.vvm and /dev/null differ
diff --git a/crates/voicevox_core/src/test_data/model_sources/load_model_works1/decode.onnx b/model/sample.vvm/decode.onnx
similarity index 100%
rename from crates/voicevox_core/src/test_data/model_sources/load_model_works1/decode.onnx
rename to model/sample.vvm/decode.onnx
diff --git a/model/sample.vvm/manifest.json b/model/sample.vvm/manifest.json
new file mode 100644
index 000000000..2c6721d08
--- /dev/null
+++ b/model/sample.vvm/manifest.json
@@ -0,0 +1,13 @@
+{
+  "manifest_version": "0.0.0",
+  "metas_filename": "metas.json",
+  "talk": {
+    "predict_duration_filename": "predict_duration.onnx",
+    "predict_intonation_filename": "predict_intonation.onnx",
+    "decode_filename": "decode.onnx",
+    "style_id_to_model_inner_id": {
+      "302": 2,
+      "303": 3
+    }
+  }
+}
diff --git a/crates/voicevox_core/src/test_data/model_sources/load_model_works1/metas.json b/model/sample.vvm/metas.json
similarity index 100%
rename from crates/voicevox_core/src/test_data/model_sources/load_model_works1/metas.json
rename to model/sample.vvm/metas.json
diff --git a/crates/voicevox_core/src/test_data/model_sources/load_model_works1/predict_duration.onnx b/model/sample.vvm/predict_duration.onnx
similarity index 100%
rename from crates/voicevox_core/src/test_data/model_sources/load_model_works1/predict_duration.onnx
rename to model/sample.vvm/predict_duration.onnx
diff --git a/crates/voicevox_core/src/test_data/model_sources/load_model_works1/predict_intonation.onnx b/model/sample.vvm/predict_intonation.onnx
similarity index 100%
rename from crates/voicevox_core/src/test_data/model_sources/load_model_works1/predict_intonation.onnx
rename to model/sample.vvm/predict_intonation.onnx
diff --git a/renovate.json b/renovate.json
index 3e6f4eae4..5704cd5f4 100644
--- a/renovate.json
+++ b/renovate.json
@@ -8,12 +8,12 @@
     {
       "groupSlug": "rust",
       "groupName": "Rust",
-      "matchPackagePatterns": "^Rust$"
+      "matchDepPatterns": "^Rust$"
     },
     {
       "groupSlug": "others",
       "groupName": "Others",
-      "excludePackagePatterns": "^Rust$",
+      "excludeDepPatterns": "^Rust$",
       "dependencyDashboardApproval": true
     }
   ],
diff --git a/rust-toolchain b/rust-toolchain
index 80627411d..54227249d 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-1.74.1
+1.78.0