diff --git a/Cargo.lock b/Cargo.lock
index 6222c0f39..aba83a05e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4394,6 +4394,7 @@ dependencies = [
  "serde",
  "serde_json",
  "smallvec",
+ "strum",
  "tempfile",
  "test_util",
  "thiserror",
diff --git a/crates/voicevox_core/Cargo.toml b/crates/voicevox_core/Cargo.toml
index 02f1860cf..e2df292fa 100644
--- a/crates/voicevox_core/Cargo.toml
+++ b/crates/voicevox_core/Cargo.toml
@@ -35,6 +35,7 @@ regex.workspace = true
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true, features = ["preserve_order"] }
 smallvec.workspace = true
+strum = { workspace = true, features = ["derive"] }
 tempfile.workspace = true
 thiserror.workspace = true
 tokio = { workspace = true, features = ["rt"] } # FIXME: feature-gateする
diff --git a/crates/voicevox_core/src/error.rs b/crates/voicevox_core/src/error.rs
index 19d464d21..c0445f2e0 100644
--- a/crates/voicevox_core/src/error.rs
+++ b/crates/voicevox_core/src/error.rs
@@ -1,7 +1,7 @@
 use crate::{
     engine::{FullContextLabelError, KanaParseError},
     user_dict::InvalidWordError,
-    StyleId, VoiceModelId,
+    StyleId, StyleType, VoiceModelId,
 };
 //use engine::
 use duplicate::duplicate_item;
@@ -38,6 +38,7 @@ impl Error {
                 LoadModelErrorKind::ReadZipEntry { .. } => ErrorKind::ReadZipEntry,
                 LoadModelErrorKind::ModelAlreadyLoaded { .. } => ErrorKind::ModelAlreadyLoaded,
                 LoadModelErrorKind::StyleAlreadyLoaded { .. } => ErrorKind::StyleAlreadyLoaded,
+                LoadModelErrorKind::MissingModelData { .. } => ErrorKind::MissingModelData,
                 LoadModelErrorKind::InvalidModelData => ErrorKind::InvalidModelData,
             },
             ErrorRepr::GetSupportedDevices(_) => ErrorKind::GetSupportedDevices,
@@ -121,6 +122,8 @@ pub enum ErrorKind {
     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。
     StyleAlreadyLoaded,
+    /// モデルデータが見つからなかった。
+    MissingModelData,
     /// 無効なモデルデータ。
     InvalidModelData,
     /// サポートされているデバイス情報取得に失敗した。
@@ -169,6 +172,8 @@ pub(crate) enum LoadModelErrorKind {
     ModelAlreadyLoaded { id: VoiceModelId },
     #[display(fmt = "スタイル`{id}`は既に読み込まれています")]
     StyleAlreadyLoaded { id: StyleId },
+    #[display(fmt = "`{style_type}`に対応するモデルデータがありませんでした")]
+    MissingModelData { style_type: StyleType },
     #[display(fmt = "モデルデータを読むことができませんでした")]
     InvalidModelData,
 }
diff --git a/crates/voicevox_core/src/infer.rs b/crates/voicevox_core/src/infer.rs
index 8e3218dde..3d66e774a 100644
--- a/crates/voicevox_core/src/infer.rs
+++ b/crates/voicevox_core/src/infer.rs
@@ -11,7 +11,7 @@ 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 {
     type Session: Sized + Send + 'static;
@@ -39,6 +39,10 @@ pub(crate) trait InferenceDomainGroup {
 pub(crate) trait InferenceDomainMap<A: InferenceDomainAssociation> {
     type Group: InferenceDomainGroup;
 
+    fn contains_for(&self, style_type: StyleType) -> bool
+    where
+        A: InferenceDomainOptionAssociation;
+
     fn try_ref_map<
         F: ConvertInferenceDomainAssociationTarget<Self::Group, A, A2, E>,
         A2: InferenceDomainAssociation,
@@ -66,12 +70,22 @@ pub(crate) trait InferenceDomainAssociation {
     type Target<D: InferenceDomain>;
 }
 
+pub(crate) trait InferenceDomainOptionAssociation: InferenceDomainAssociation {
+    fn is_some<D: InferenceDomain>(x: &Self::Target<D>) -> bool;
+}
+
 pub(crate) struct Optional<A>(Infallible, PhantomData<fn() -> A>);
 
 impl<A: InferenceDomainAssociation> InferenceDomainAssociation for Optional<A> {
     type Target<D: InferenceDomain> = Option<A::Target<D>>;
 }
 
+impl<A: InferenceDomainAssociation> InferenceDomainOptionAssociation for Optional<A> {
+    fn is_some<D: InferenceDomain>(x: &Self::Target<D>) -> bool {
+        x.is_some()
+    }
+}
+
 /// ある`VoiceModel`が提供する推論操作の集合を示す。
 pub(crate) trait InferenceDomain: Sized {
     type Group: InferenceDomainGroup;
diff --git a/crates/voicevox_core/src/infer/domains.rs b/crates/voicevox_core/src/infer/domains.rs
index f8c8af0d1..b4d3771ba 100644
--- a/crates/voicevox_core/src/infer/domains.rs
+++ b/crates/voicevox_core/src/infer/domains.rs
@@ -1,5 +1,7 @@
 mod talk;
 
+use crate::StyleType;
+
 pub(crate) use self::talk::{
     DecodeInput, DecodeOutput, PredictDurationInput, PredictDurationOutput, PredictIntonationInput,
     PredictIntonationOutput, TalkDomain, TalkOperation,
@@ -7,7 +9,7 @@ pub(crate) use self::talk::{
 
 use super::{
     ConvertInferenceDomainAssociationTarget, InferenceDomainAssociation, InferenceDomainGroup,
-    InferenceDomainMap,
+    InferenceDomainMap, InferenceDomainOptionAssociation,
 };
 
 pub(crate) enum InferenceDomainGroupImpl {}
@@ -23,6 +25,15 @@ pub(crate) struct InferenceDomainMapImpl<A: InferenceDomainAssociation> {
 impl<A: InferenceDomainAssociation> InferenceDomainMap<A> for InferenceDomainMapImpl<A> {
     type Group = InferenceDomainGroupImpl;
 
+    fn contains_for(&self, style_type: StyleType) -> bool
+    where
+        A: InferenceDomainOptionAssociation,
+    {
+        match style_type {
+            StyleType::Talk => A::is_some(&self.talk),
+        }
+    }
+
     fn try_ref_map<
         F: ConvertInferenceDomainAssociationTarget<Self::Group, A, A2, E>,
         A2: InferenceDomainAssociation,
diff --git a/crates/voicevox_core/src/infer/status.rs b/crates/voicevox_core/src/infer/status.rs
index dc9821ec4..90e5e4151 100644
--- a/crates/voicevox_core/src/infer/status.rs
+++ b/crates/voicevox_core/src/infer/status.rs
@@ -50,7 +50,7 @@ impl<R: InferenceRuntime, S: InferenceDomainGroup> Status<R, S> {
         self.loaded_models
             .lock()
             .unwrap()
-            .ensure_acceptable(model_header)?;
+            .ensure_acceptable(model_header, model_bytes)?;
 
         let session_set = model_bytes
             .try_ref_map(CreateSessionSet {
@@ -131,7 +131,10 @@ impl<R: InferenceRuntime, S: InferenceDomainGroup> Status<R, S> {
     ///
     /// # Panics
     ///
-    /// `self`が`model_id`を含んでいないとき、パニックする。
+    /// 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
     pub(crate) fn run_session<I>(
         &self,
         model_id: &VoiceModelId,
@@ -193,7 +196,10 @@ impl<R: InferenceRuntime, S: InferenceDomainGroup> LoadedModels<R, S> {
 
     /// # Panics
     ///
-    /// `self`が`model_id`を含んでいないとき、パニックする。
+    /// 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) -> SessionCell<R, I>
     where
         I: InferenceInputSignature,
@@ -201,7 +207,14 @@ impl<R: InferenceRuntime, S: InferenceDomainGroup> LoadedModels<R, S> {
     {
         <I::Signature as InferenceSignature>::Domain::visit(&self.0[model_id].session_sets)
             .as_ref()
-            .unwrap_or_else(|| todo!("`ensure_acceptable`で検査する"))
+            .unwrap_or_else(|| {
+                let type_name =
+                    std::any::type_name::<<I::Signature as InferenceSignature>::Domain>()
+                        .split("::")
+                        .last()
+                        .unwrap();
+                panic!("missing session set for `{type_name}`");
+            })
             .get()
     }
 
@@ -219,14 +232,25 @@ impl<R: InferenceRuntime, S: InferenceDomainGroup> LoadedModels<R, S> {
     ///
     /// 次の場合にエラーを返す。
     ///
-    /// - 音声モデルIDかスタイルIDが`model_header`と重複するとき
-    fn ensure_acceptable(&self, model_header: &VoiceModelHeader) -> LoadModelResult<()> {
+    /// - 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
+    fn ensure_acceptable(
+        &self,
+        model_header: &VoiceModelHeader,
+        model_bytes_or_sessions: &S::Map<Optional<impl InferenceDomainAssociation>>,
+    ) -> 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(),
+            }));
+        }
+
         let loaded = self.speakers();
         let external = model_header.metas.iter();
         for (loaded, external) in iproduct!(loaded, external) {
@@ -240,10 +264,13 @@ impl<R: InferenceRuntime, S: InferenceDomainGroup> LoadedModels<R, S> {
             .metas
             .iter()
             .flat_map(|speaker| speaker.styles());
-        if self.0.contains_key(&model_header.id) {
-            return Err(error(LoadModelErrorKind::ModelAlreadyLoaded {
-                id: model_header.id.clone(),
-            }));
+        if let Some(style_type) = external
+            .clone()
+            .map(StyleMeta::r#type)
+            .copied()
+            .find(|&t| !model_bytes_or_sessions.contains_for(t))
+        {
+            return Err(error(LoadModelErrorKind::MissingModelData { style_type }));
         }
         if let Some((style, _)) =
             iproduct!(loaded, external).find(|(loaded, external)| loaded.id() == external.id())
@@ -260,7 +287,7 @@ impl<R: InferenceRuntime, S: InferenceDomainGroup> LoadedModels<R, S> {
         model_header: &VoiceModelHeader,
         session_sets: S::Map<Optional<SessionSetByDomain<R>>>,
     ) -> Result<()> {
-        self.ensure_acceptable(model_header)?;
+        self.ensure_acceptable(model_header, &session_sets)?;
 
         let prev = self.0.insert(
             model_header.id.clone(),
diff --git a/crates/voicevox_core/src/metas.rs b/crates/voicevox_core/src/metas.rs
index 3bdc1f277..df8f65800 100644
--- a/crates/voicevox_core/src/metas.rs
+++ b/crates/voicevox_core/src/metas.rs
@@ -164,7 +164,8 @@ pub struct StyleMeta {
 }
 
 /// **スタイル**(_style_)に対応するモデルの種類。
-#[derive(Default, Clone, Copy, Deserialize, Serialize)]
+#[derive(Default, Clone, Copy, 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。
diff --git a/crates/voicevox_core_c_api/src/helpers.rs b/crates/voicevox_core_c_api/src/helpers.rs
index 74177db9c..c6aa3c726 100644
--- a/crates/voicevox_core_c_api/src/helpers.rs
+++ b/crates/voicevox_core_c_api/src/helpers.rs
@@ -39,6 +39,7 @@ pub(crate) fn into_result_code_with_error(result: CApiResult<()>) -> VoicevoxRes
                 ReadZipEntry => VOICEVOX_RESULT_READ_ZIP_ENTRY_ERROR,
                 ModelAlreadyLoaded => VOICEVOX_RESULT_MODEL_ALREADY_LOADED_ERROR,
                 StyleAlreadyLoaded => VOICEVOX_RESULT_STYLE_ALREADY_LOADED_ERROR,
+                MissingModelData => VOICEVOX_RESULT_MISSING_MODEL_DATA_ERROR,
                 InvalidModelData => VOICEVOX_RESULT_INVALID_MODEL_DATA_ERROR,
                 GetSupportedDevices => VOICEVOX_RESULT_GET_SUPPORTED_DEVICES_ERROR,
                 StyleNotFound => VOICEVOX_RESULT_STYLE_NOT_FOUND_ERROR,
diff --git a/crates/voicevox_core_c_api/src/result_code.rs b/crates/voicevox_core_c_api/src/result_code.rs
index 65236ada4..f8000a4dd 100644
--- a/crates/voicevox_core_c_api/src/result_code.rs
+++ b/crates/voicevox_core_c_api/src/result_code.rs
@@ -41,6 +41,8 @@ pub enum VoicevoxResultCode {
     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
     VOICEVOX_RESULT_STYLE_ALREADY_LOADED_ERROR = 26,
+    /// モデルデータが見つからなかった
+    VOICEVOX_RESULT_MISSING_MODEL_DATA_ERROR = 28,
     /// 無効なモデルデータ
     VOICEVOX_RESULT_INVALID_MODEL_DATA_ERROR = 27,
     /// ユーザー辞書を読み込めなかった
@@ -94,6 +96,7 @@ pub(crate) const fn error_result_to_message(result_code: VoicevoxResultCode) ->
         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")
         }
+        VOICEVOX_RESULT_MISSING_MODEL_DATA_ERROR => cstr!("モデルデータがありませんでした"),
         VOICEVOX_RESULT_INVALID_MODEL_DATA_ERROR => {
             cstr!("モデルデータを読むことができませんでした")
         }
diff --git a/crates/voicevox_core_java_api/src/common.rs b/crates/voicevox_core_java_api/src/common.rs
index 71a60f5f3..40ed69189 100644
--- a/crates/voicevox_core_java_api/src/common.rs
+++ b/crates/voicevox_core_java_api/src/common.rs
@@ -71,6 +71,7 @@ where
                             ReadZipEntry,
                             ModelAlreadyLoaded,
                             StyleAlreadyLoaded,
+                            MissingModelData,
                             InvalidModelData,
                             GetSupportedDevices,
                             StyleNotFound,
diff --git a/crates/voicevox_core_python_api/src/convert.rs b/crates/voicevox_core_python_api/src/convert.rs
index 3f629f90e..2b917d6ac 100644
--- a/crates/voicevox_core_python_api/src/convert.rs
+++ b/crates/voicevox_core_python_api/src/convert.rs
@@ -16,10 +16,10 @@ use voicevox_core::{
 
 use crate::{
     ExtractFullContextLabelError, GetSupportedDevicesError, GpuSupportError, InferenceFailedError,
-    InvalidModelDataError, InvalidWordError, LoadUserDictError, ModelAlreadyLoadedError,
-    ModelNotFoundError, NotLoadedOpenjtalkDictError, OpenZipFileError, ParseKanaError,
-    ReadZipEntryError, SaveUserDictError, StyleAlreadyLoadedError, StyleNotFoundError,
-    UseUserDictError, WordNotFoundError,
+    InvalidModelDataError, InvalidWordError, LoadUserDictError, MissingModelDataError,
+    ModelAlreadyLoadedError, ModelNotFoundError, NotLoadedOpenjtalkDictError, OpenZipFileError,
+    ParseKanaError, ReadZipEntryError, SaveUserDictError, StyleAlreadyLoadedError,
+    StyleNotFoundError, UseUserDictError, WordNotFoundError,
 };
 
 pub(crate) fn from_acceleration_mode(ob: &PyAny) -> PyResult<AccelerationMode> {
@@ -194,6 +194,7 @@ pub(crate) 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::MissingModelData => MissingModelDataError::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 4d190333d..b7387a53a 100644
--- a/crates/voicevox_core_python_api/src/lib.rs
+++ b/crates/voicevox_core_python_api/src/lib.rs
@@ -71,6 +71,7 @@ exceptions! {
     ReadZipEntryError: PyException;
     ModelAlreadyLoadedError: PyException;
     StyleAlreadyLoadedError: PyException;
+    MissingModelDataError: PyException;
     InvalidModelDataError: PyException;
     GetSupportedDevicesError: PyException;
     StyleNotFoundError: PyKeyError;