diff --git a/crates/voicevox_core/src/error.rs b/crates/voicevox_core/src/error.rs
index c0445f2e0..59624e544 100644
--- a/crates/voicevox_core/src/error.rs
+++ b/crates/voicevox_core/src/error.rs
@@ -5,7 +5,8 @@ use crate::{
 };
 //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;
 
@@ -71,10 +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\
diff --git a/crates/voicevox_core/src/infer.rs b/crates/voicevox_core/src/infer.rs
index 3d66e774a..2ddbb8009 100644
--- a/crates/voicevox_core/src/infer.rs
+++ b/crates/voicevox_core/src/infer.rs
@@ -3,7 +3,9 @@ mod model_file;
 pub(crate) mod runtimes;
 pub(crate) mod status;
 
-use std::{borrow::Cow, convert::Infallible, fmt::Debug, marker::PhantomData};
+use std::{
+    borrow::Cow, collections::BTreeSet, convert::Infallible, fmt::Debug, marker::PhantomData,
+};
 
 use derive_new::new;
 use duplicate::duplicate_item;
@@ -39,9 +41,9 @@ pub(crate) trait InferenceDomainGroup {
 pub(crate) trait InferenceDomainMap<A: InferenceDomainAssociation> {
     type Group: InferenceDomainGroup;
 
-    fn contains_for(&self, style_type: StyleType) -> bool
+    fn any<P>(&self, p: P) -> bool
     where
-        A: InferenceDomainOptionAssociation;
+        P: InferenceDomainAssociationTargetPredicate<Association = A>;
 
     fn try_ref_map<
         F: ConvertInferenceDomainAssociationTarget<Self::Group, A, A2, E>,
@@ -53,6 +55,14 @@ pub(crate) trait InferenceDomainMap<A: InferenceDomainAssociation> {
     ) -> Result<<Self::Group as InferenceDomainGroup>::Map<A2>, E>;
 }
 
+pub(crate) trait InferenceDomainAssociationTargetPredicate {
+    type Association: InferenceDomainAssociation;
+    fn test<D: InferenceDomain>(
+        &self,
+        x: &<Self::Association as InferenceDomainAssociation>::Target<D>,
+    ) -> bool;
+}
+
 pub(crate) trait ConvertInferenceDomainAssociationTarget<
     G: InferenceDomainGroup + ?Sized,
     A1: InferenceDomainAssociation,
@@ -70,27 +80,19 @@ 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;
     type Operation: InferenceOperation;
 
+    fn style_types() -> &'static BTreeSet<StyleType>;
+
     fn visit<A: InferenceDomainAssociation>(
         map: &<Self::Group as InferenceDomainGroup>::Map<A>,
     ) -> &A::Target<Self>;
diff --git a/crates/voicevox_core/src/infer/domains.rs b/crates/voicevox_core/src/infer/domains.rs
index b4d3771ba..a4743c2f7 100644
--- a/crates/voicevox_core/src/infer/domains.rs
+++ b/crates/voicevox_core/src/infer/domains.rs
@@ -1,15 +1,13 @@
 mod talk;
 
-use crate::StyleType;
-
 pub(crate) use self::talk::{
     DecodeInput, DecodeOutput, PredictDurationInput, PredictDurationOutput, PredictIntonationInput,
     PredictIntonationOutput, TalkDomain, TalkOperation,
 };
 
 use super::{
-    ConvertInferenceDomainAssociationTarget, InferenceDomainAssociation, InferenceDomainGroup,
-    InferenceDomainMap, InferenceDomainOptionAssociation,
+    ConvertInferenceDomainAssociationTarget, InferenceDomainAssociation,
+    InferenceDomainAssociationTargetPredicate, InferenceDomainGroup, InferenceDomainMap,
 };
 
 pub(crate) enum InferenceDomainGroupImpl {}
@@ -25,13 +23,11 @@ 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
+    fn any<P>(&self, p: P) -> bool
     where
-        A: InferenceDomainOptionAssociation,
+        P: InferenceDomainAssociationTargetPredicate<Association = A>,
     {
-        match style_type {
-            StyleType::Talk => A::is_some(&self.talk),
-        }
+        p.test(&self.talk)
     }
 
     fn try_ref_map<
diff --git a/crates/voicevox_core/src/infer/domains/talk.rs b/crates/voicevox_core/src/infer/domains/talk.rs
index 4aff5f999..90ea56b34 100644
--- a/crates/voicevox_core/src/infer/domains/talk.rs
+++ b/crates/voicevox_core/src/infer/domains/talk.rs
@@ -1,6 +1,11 @@
+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::{
     super::{
@@ -16,6 +21,12 @@ impl InferenceDomain for TalkDomain {
     type Group = InferenceDomainGroupImpl;
     type Operation = TalkOperation;
 
+    fn style_types() -> &'static BTreeSet<StyleType> {
+        static STYLE_TYPES: Lazy<BTreeSet<StyleType>> =
+            Lazy::new(|| BTreeSet::from([StyleType::Talk]));
+        &STYLE_TYPES
+    }
+
     fn visit<A: InferenceDomainAssociation>(
         map: &<Self::Group as InferenceDomainGroup>::Map<A>,
     ) -> &A::Target<Self> {
diff --git a/crates/voicevox_core/src/infer/status.rs b/crates/voicevox_core/src/infer/status.rs
index bea598aa9..6d270f139 100644
--- a/crates/voicevox_core/src/infer/status.rs
+++ b/crates/voicevox_core/src/infer/status.rs
@@ -22,12 +22,13 @@ use crate::{
     manifest::ModelInnerId,
     metas::{self, SpeakerMeta, StyleId, StyleMeta, VoiceModelMeta},
     voice_model::{ModelData, ModelDataByInferenceDomain, VoiceModelHeader, VoiceModelId},
-    Result,
+    Result, StyleType,
 };
 
 use super::{
-    model_file, InferenceDomain, InferenceDomainMap as _, InferenceInputSignature,
-    InferenceRuntime, InferenceSessionOptions, InferenceSignature, Optional,
+    model_file, InferenceDomain, InferenceDomainAssociationTargetPredicate,
+    InferenceDomainMap as _, InferenceInputSignature, InferenceRuntime, InferenceSessionOptions,
+    InferenceSignature, Optional,
 };
 
 pub(crate) struct Status<R: InferenceRuntime, G: InferenceDomainGroup> {
@@ -132,14 +133,12 @@ impl<R: InferenceRuntime, G: InferenceDomainGroup> Status<R, G> {
             .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)
     }
 
-    pub(crate) 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
@@ -191,12 +190,14 @@ impl<R: InferenceRuntime, G: InferenceDomainGroup> LoadedModels<R, G> {
             .0
             .iter()
             .find(|(_, LoadedModel { metas, .. })| {
-                metas
-                    .iter()
-                    .flat_map(SpeakerMeta::styles)
-                    .any(|style| *style.id() == style_id)
+                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 })?;
+            .ok_or(ErrorRepr::StyleNotFound {
+                style_id,
+                style_types: D::style_types(),
+            })?;
 
         let model_inner_id = D::visit(by_domain)
             .as_ref()
@@ -280,11 +281,17 @@ impl<R: InferenceRuntime, G: InferenceDomainGroup> LoadedModels<R, G> {
             .metas
             .iter()
             .flat_map(|speaker| speaker.styles());
-        if let Some(style_type) = external
-            .clone()
-            .map(StyleMeta::r#type)
-            .copied()
-            .find(|&t| !model_bytes_or_sessions.contains_for(t))
+        if let Some(style_type) =
+            external
+                .clone()
+                .map(StyleMeta::r#type)
+                .copied()
+                .find(|&style_type| {
+                    !model_bytes_or_sessions.any(ContainsForStyleType {
+                        style_type,
+                        marker: PhantomData,
+                    })
+                })
         {
             return Err(error(LoadModelErrorKind::MissingModelData { style_type }));
         }
@@ -295,7 +302,25 @@ impl<R: InferenceRuntime, G: InferenceDomainGroup> LoadedModels<R, G> {
                 id: *style.id(),
             }));
         }
-        Ok(())
+        return Ok(());
+
+        struct ContainsForStyleType<A> {
+            style_type: StyleType,
+            marker: PhantomData<fn() -> A>,
+        }
+
+        impl<A: InferenceDomainAssociation> InferenceDomainAssociationTargetPredicate
+            for ContainsForStyleType<A>
+        {
+            type Association = Optional<A>;
+
+            fn test<D: InferenceDomain>(
+                &self,
+                x: &<Self::Association as InferenceDomainAssociation>::Target<D>,
+            ) -> bool {
+                D::style_types().contains(&self.style_type) && x.is_some()
+            }
+        }
     }
 
     fn insert(
diff --git a/crates/voicevox_core/src/metas.rs b/crates/voicevox_core/src/metas.rs
index df8f65800..ff0161720 100644
--- a/crates/voicevox_core/src/metas.rs
+++ b/crates/voicevox_core/src/metas.rs
@@ -164,7 +164,20 @@ pub struct StyleMeta {
 }
 
 /// **スタイル**(_style_)に対応するモデルの種類。
-#[derive(Default, Clone, Copy, Debug, strum::Display, Deserialize, Serialize)]
+#[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 {
diff --git a/crates/voicevox_core/src/synthesizer.rs b/crates/voicevox_core/src/synthesizer.rs
index b0eb3953f..11f8fe380 100644
--- a/crates/voicevox_core/src/synthesizer.rs
+++ b/crates/voicevox_core/src/synthesizer.rs
@@ -833,11 +833,6 @@ 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::<TalkDomain>(style_id)?;
 
             let PredictDurationOutput {
@@ -873,11 +868,6 @@ 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::<TalkDomain>(style_id)?;
 
             let PredictIntonationOutput { f0_list: output } = self.status.run_session(
@@ -905,11 +895,6 @@ 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::<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