diff --git a/changes/fix-character-dictionary-localized-alias-surnames.md b/changes/fix-character-dictionary-localized-alias-surnames.md
new file mode 100644
index 00000000..e4f271be
--- /dev/null
+++ b/changes/fix-character-dictionary-localized-alias-surnames.md
@@ -0,0 +1,4 @@
+type: fixed
+area: character-dictionary
+
+- Added surname honorific matches for Japanese localized character aliases embedded in AniList alternative names, such as Korean-source characters with Japanese names in parentheses, and refresh cached snapshots so those aliases are regenerated.
diff --git a/package.json b/package.json
index c96219ba..b2bc2460 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "test:plugin:src": "lua scripts/test-plugin-lua-compat.lua && lua scripts/test-plugin-start-gate.lua && lua scripts/test-plugin-session-bindings.lua && lua scripts/test-plugin-binary-windows.lua",
     "test:launcher:smoke:src": "bun test launcher/smoke.e2e.test.ts",
     "test:launcher:src": "bun test launcher/config.test.ts launcher/config-domain-parsers.test.ts launcher/config/cli-parser-builder.test.ts launcher/config/args-normalizer.test.ts launcher/mpv.test.ts launcher/picker.test.ts launcher/parse-args.test.ts launcher/main.test.ts launcher/commands/command-modules.test.ts launcher/commands/update-command.test.ts launcher/smoke.e2e.test.ts && bun run test:plugin:src",
-    "test:core:src": "bun test src/preload-settings.test.ts src/settings/settings-anki-controls.test.ts src/settings/settings-model.test.ts src/settings/settings-field-layout.test.ts src/cli/args.test.ts src/cli/help.test.ts src/shared/setup-state.test.ts src/core/services/cli-command.test.ts src/core/services/ipc.test.ts src/core/services/anki-jimaku-ipc.test.ts src/core/services/field-grouping-overlay.test.ts src/core/services/numeric-shortcut-session.test.ts src/core/services/secondary-subtitle.test.ts src/core/services/mpv-render-metrics.test.ts src/core/services/overlay-content-measurement.test.ts src/core/services/mpv-control.test.ts src/core/services/mpv.test.ts src/core/services/runtime-options-ipc.test.ts src/core/services/runtime-config.test.ts src/core/services/yomitan-extension-paths.test.ts src/core/services/yomitan-extension-loader.test.ts src/core/services/yomitan-settings.test.ts src/core/services/settings-window-z-order.test.ts src/core/services/hyprland-window-placement.test.ts src/core/services/config-hot-reload.test.ts src/core/services/discord-presence.test.ts src/core/services/tokenizer.test.ts src/core/services/tokenizer/annotation-stage.test.ts src/core/services/tokenizer/parser-selection-stage.test.ts src/core/services/tokenizer/parser-enrichment-stage.test.ts src/core/services/subsync.test.ts src/core/services/overlay-bridge.test.ts src/core/services/overlay-manager.test.ts src/core/services/overlay-shortcut-handler.test.ts src/core/services/stats-window.test.ts src/core/services/stats-window-lifecycle.test.ts src/core/services/__tests__/stats-server.test.ts src/main/runtime/stats-server-routing.test.ts src/core/services/mining.test.ts src/core/services/anki-jimaku.test.ts src/core/services/jimaku-download-path.test.ts src/core/services/jellyfin.test.ts src/core/services/jellyfin-remote.test.ts src/core/services/immersion-tracker-service.test.ts src/core/services/overlay-runtime-init.test.ts src/core/services/app-ready.test.ts src/core/services/startup-bootstrap.test.ts src/core/services/subtitle-processing-controller.test.ts src/main/runtime/current-subtitle-snapshot.test.ts src/main/runtime/autoplay-tokenization-warm-release.test.ts src/main/runtime/autoplay-subtitle-primer.test.ts src/core/services/anilist/anilist-update-queue.test.ts src/core/services/anilist/rate-limiter.test.ts src/core/services/jlpt-token-filter.test.ts src/core/services/subtitle-position.test.ts src/core/utils/shortcut-config.test.ts src/main/runtime/startup-mode-flags.test.ts src/main/runtime/config-settings-window.test.ts src/main/runtime/settings-window-z-order.test.ts src/main/runtime/setup-window-factory.test.ts src/main/runtime/first-run-setup-plugin.test.ts src/main/runtime/first-run-setup-service.test.ts src/main/runtime/first-run-setup-window.test.ts src/main/runtime/command-line-launcher.test.ts src/main/runtime/tray-runtime.test.ts src/main/runtime/tray-main-actions.test.ts src/main/runtime/tray-main-deps.test.ts src/main/runtime/tray-runtime-handlers.test.ts src/main/runtime/cli-command-context-main-deps.test.ts src/main/runtime/app-ready-main-deps.test.ts src/main/runtime/update/appimage-updater.test.ts src/main/runtime/update/fetch-adapter.test.ts src/main/runtime/update/release-metadata-policy.test.ts src/main/runtime/update/update-dialogs.test.ts src/main/runtime/update/support-assets.test.ts src/renderer/error-recovery.test.ts src/renderer/subtitle-render.test.ts src/renderer/subtitle-render-word-class.test.ts src/renderer/handlers/mouse.test.ts src/renderer/handlers/keyboard.test.ts src/renderer/modals/jimaku.test.ts src/subsync/utils.test.ts src/main/anilist-url-guard.test.ts src/window-trackers/hyprland-tracker.test.ts src/window-trackers/x11-tracker.test.ts src/window-trackers/windows-helper.test.ts src/window-trackers/windows-tracker.test.ts launcher/config.test.ts launcher/config-domain-parsers.test.ts launcher/config/cli-parser-builder.test.ts launcher/config/args-normalizer.test.ts launcher/parse-args.test.ts launcher/main.test.ts launcher/commands/command-modules.test.ts launcher/commands/update-command.test.ts launcher/setup-gate.test.ts stats/src/lib/api-client.test.ts stats/src/hooks/useExcludedWords.test.ts",
+    "test:core:src": "bun test src/preload-settings.test.ts src/settings/settings-anki-controls.test.ts src/settings/settings-model.test.ts src/settings/settings-field-layout.test.ts src/cli/args.test.ts src/cli/help.test.ts src/shared/setup-state.test.ts src/core/services/cli-command.test.ts src/core/services/ipc.test.ts src/core/services/anki-jimaku-ipc.test.ts src/core/services/field-grouping-overlay.test.ts src/core/services/numeric-shortcut-session.test.ts src/core/services/secondary-subtitle.test.ts src/core/services/mpv-render-metrics.test.ts src/core/services/overlay-content-measurement.test.ts src/core/services/mpv-control.test.ts src/core/services/mpv.test.ts src/core/services/runtime-options-ipc.test.ts src/core/services/runtime-config.test.ts src/core/services/yomitan-extension-paths.test.ts src/core/services/yomitan-extension-loader.test.ts src/core/services/yomitan-settings.test.ts src/core/services/settings-window-z-order.test.ts src/core/services/hyprland-window-placement.test.ts src/core/services/config-hot-reload.test.ts src/core/services/discord-presence.test.ts src/core/services/tokenizer.test.ts src/core/services/tokenizer/annotation-stage.test.ts src/core/services/tokenizer/parser-selection-stage.test.ts src/core/services/tokenizer/parser-enrichment-stage.test.ts src/core/services/subsync.test.ts src/core/services/overlay-bridge.test.ts src/core/services/overlay-manager.test.ts src/core/services/overlay-shortcut-handler.test.ts src/core/services/stats-window.test.ts src/core/services/stats-window-lifecycle.test.ts src/core/services/__tests__/stats-server.test.ts src/main/runtime/stats-server-routing.test.ts src/core/services/mining.test.ts src/core/services/anki-jimaku.test.ts src/core/services/jimaku-download-path.test.ts src/core/services/jellyfin.test.ts src/core/services/jellyfin-remote.test.ts src/core/services/immersion-tracker-service.test.ts src/core/services/overlay-runtime-init.test.ts src/core/services/app-ready.test.ts src/core/services/startup-bootstrap.test.ts src/core/services/subtitle-processing-controller.test.ts src/main/runtime/current-subtitle-snapshot.test.ts src/main/runtime/autoplay-tokenization-warm-release.test.ts src/main/runtime/autoplay-subtitle-primer.test.ts src/core/services/anilist/anilist-update-queue.test.ts src/core/services/anilist/rate-limiter.test.ts src/core/services/jlpt-token-filter.test.ts src/core/services/subtitle-position.test.ts src/core/utils/shortcut-config.test.ts src/main/runtime/startup-mode-flags.test.ts src/main/runtime/config-settings-window.test.ts src/main/runtime/settings-window-z-order.test.ts src/main/runtime/setup-window-factory.test.ts src/main/runtime/first-run-setup-plugin.test.ts src/main/runtime/first-run-setup-service.test.ts src/main/runtime/first-run-setup-window.test.ts src/main/runtime/command-line-launcher.test.ts src/main/runtime/tray-runtime.test.ts src/main/runtime/tray-main-actions.test.ts src/main/runtime/tray-main-deps.test.ts src/main/runtime/tray-runtime-handlers.test.ts src/main/runtime/cli-command-context-main-deps.test.ts src/main/runtime/app-ready-main-deps.test.ts src/main/runtime/update/appimage-updater.test.ts src/main/runtime/update/fetch-adapter.test.ts src/main/runtime/update/release-metadata-policy.test.ts src/main/runtime/update/update-dialogs.test.ts src/main/runtime/update/support-assets.test.ts src/renderer/error-recovery.test.ts src/renderer/subtitle-render.test.ts src/renderer/subtitle-render-word-class.test.ts src/renderer/handlers/mouse.test.ts src/renderer/handlers/keyboard.test.ts src/renderer/modals/jimaku.test.ts src/subsync/utils.test.ts src/main/anilist-url-guard.test.ts src/main/character-dictionary-runtime/term-building.test.ts src/window-trackers/hyprland-tracker.test.ts src/window-trackers/x11-tracker.test.ts src/window-trackers/windows-helper.test.ts src/window-trackers/windows-tracker.test.ts launcher/config.test.ts launcher/config-domain-parsers.test.ts launcher/config/cli-parser-builder.test.ts launcher/config/args-normalizer.test.ts launcher/parse-args.test.ts launcher/main.test.ts launcher/commands/command-modules.test.ts launcher/commands/update-command.test.ts launcher/setup-gate.test.ts stats/src/lib/api-client.test.ts stats/src/hooks/useExcludedWords.test.ts",
     "test:core:dist": "bun test dist/preload-settings.test.js dist/settings/settings-anki-controls.test.js dist/settings/settings-model.test.js dist/settings/settings-field-layout.test.js dist/cli/args.test.js dist/cli/help.test.js dist/core/services/cli-command.test.js dist/core/services/ipc.test.js dist/core/services/anki-jimaku-ipc.test.js dist/core/services/field-grouping-overlay.test.js dist/core/services/numeric-shortcut-session.test.js dist/core/services/secondary-subtitle.test.js dist/core/services/mpv-render-metrics.test.js dist/core/services/overlay-content-measurement.test.js dist/core/services/mpv-control.test.js dist/core/services/mpv.test.js dist/core/services/runtime-options-ipc.test.js dist/core/services/runtime-config.test.js dist/core/services/yomitan-extension-paths.test.js dist/core/services/config-hot-reload.test.js dist/core/services/discord-presence.test.js dist/core/services/tokenizer.test.js dist/core/services/tokenizer/annotation-stage.test.js dist/core/services/tokenizer/parser-selection-stage.test.js dist/core/services/tokenizer/parser-enrichment-stage.test.js dist/core/services/subsync.test.js dist/core/services/overlay-bridge.test.js dist/core/services/overlay-manager.test.js dist/core/services/overlay-shortcut-handler.test.js dist/core/services/stats-window-lifecycle.test.js dist/core/services/mining.test.js dist/core/services/anki-jimaku.test.js dist/core/services/jimaku-download-path.test.js dist/core/services/jellyfin.test.js dist/core/services/jellyfin-remote.test.js dist/core/services/immersion-tracker-service.test.js dist/core/services/overlay-runtime-init.test.js dist/core/services/app-ready.test.js dist/core/services/startup-bootstrap.test.js dist/core/services/subtitle-processing-controller.test.js dist/main/runtime/current-subtitle-snapshot.test.js dist/main/runtime/autoplay-tokenization-warm-release.test.js dist/main/runtime/autoplay-subtitle-primer.test.js dist/core/services/anilist/anilist-token-store.test.js dist/core/services/anilist/anilist-update-queue.test.js dist/core/services/anilist/rate-limiter.test.js dist/core/services/jlpt-token-filter.test.js dist/core/services/subtitle-position.test.js dist/renderer/error-recovery.test.js dist/renderer/subtitle-render.test.js dist/renderer/subtitle-render-word-class.test.js dist/renderer/handlers/mouse.test.js dist/renderer/handlers/keyboard.test.js dist/renderer/modals/jimaku.test.js dist/subsync/utils.test.js dist/main/anilist-url-guard.test.js dist/window-trackers/hyprland-tracker.test.js dist/window-trackers/x11-tracker.test.js dist/window-trackers/windows-helper.test.js dist/window-trackers/windows-tracker.test.js",
     "test:core:smoke:dist": "bun test dist/cli/help.test.js dist/core/services/runtime-config.test.js dist/core/services/ipc.test.js dist/core/services/overlay-manager.test.js dist/core/services/anilist/anilist-token-store.test.js dist/core/services/startup-bootstrap.test.js dist/renderer/error-recovery.test.js dist/main/anilist-url-guard.test.js dist/window-trackers/x11-tracker.test.js",
     "test:smoke:dist": "bun run test:config:smoke:dist && bun run test:core:smoke:dist",
diff --git a/src/main/character-dictionary-runtime/constants.ts b/src/main/character-dictionary-runtime/constants.ts
index 0729ad44..9d2622e1 100644
--- a/src/main/character-dictionary-runtime/constants.ts
+++ b/src/main/character-dictionary-runtime/constants.ts
@@ -1,7 +1,7 @@
 export const ANILIST_GRAPHQL_URL = 'https://graphql.anilist.co';
 export const ANILIST_REQUEST_DELAY_MS = 2000;
 export const CHARACTER_IMAGE_DOWNLOAD_DELAY_MS = 250;
-export const CHARACTER_DICTIONARY_FORMAT_VERSION = 17;
+export const CHARACTER_DICTIONARY_FORMAT_VERSION = 18;
 export const CHARACTER_DICTIONARY_MERGED_TITLE = 'SubMiner Character Dictionary';
 
 export const HONORIFIC_SUFFIXES = [
diff --git a/src/main/character-dictionary-runtime/term-building.test.ts b/src/main/character-dictionary-runtime/term-building.test.ts
new file mode 100644
index 00000000..26eef728
--- /dev/null
+++ b/src/main/character-dictionary-runtime/term-building.test.ts
@@ -0,0 +1,38 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { buildNameTerms } from './term-building';
+import type { CharacterRecord } from './types';
+
+function characterRecord(overrides: Partial<CharacterRecord>): CharacterRecord {
+  return {
+    id: 136073,
+    role: 'primary',
+    firstNameHint: 'Chi-Yul',
+    fullName: 'Chi-Yul Song',
+    lastNameHint: 'Song',
+    nativeName: '송치율',
+    alternativeNames: [],
+    bloodType: '',
+    birthday: null,
+    description: '',
+    imageUrl: null,
+    age: '',
+    sex: '',
+    voiceActors: [],
+    ...overrides,
+  };
+}
+
+test('buildNameTerms adds surname honorifics from Japanese localized aliases', () => {
+  const terms = buildNameTerms(
+    characterRecord({
+      alternativeNames: ['Isao Mabuchi (馬渕勲)', 'Chi-Yeol (송치열)'],
+    }),
+  );
+
+  assert.ok(terms.includes('馬渕勲'));
+  assert.ok(terms.includes('馬渕勲さん'));
+  assert.ok(terms.includes('馬渕'));
+  assert.ok(terms.includes('馬渕さん'));
+  assert.ok(!terms.includes('송치'));
+});
diff --git a/src/main/character-dictionary-runtime/term-building.ts b/src/main/character-dictionary-runtime/term-building.ts
index b46ecdc9..3f25dbcf 100644
--- a/src/main/character-dictionary-runtime/term-building.ts
+++ b/src/main/character-dictionary-runtime/term-building.ts
@@ -3,6 +3,7 @@ import {
   addRomanizedKanaAliases,
   buildReading,
   buildReadingFromRomanized,
+  containsKanji,
   hasKanaOnly,
   isRomanizedName,
   splitJapaneseName,
@@ -39,6 +40,25 @@ function expandRawNameVariants(rawName: string): string[] {
   return [...variants];
 }
 
+function isJapaneseNameSplitCandidate(name: string): boolean {
+  const compact = name.replace(/[\s\u3000・･·•]/g, '');
+  return (
+    containsKanji(compact) && /^[\u3040-\u30ff\u3400-\u4dbf\u4e00-\u9fff々〆ヵヶー]+$/.test(compact)
+  );
+}
+
+function addJapaneseNameParts(character: CharacterRecord, name: string, terms: Set<string>): void {
+  if (!isJapaneseNameSplitCandidate(name)) return;
+
+  const nameParts = splitJapaneseName(name, character.firstNameHint, character.lastNameHint);
+  if (nameParts.family) {
+    terms.add(nameParts.family);
+  }
+  if (nameParts.given) {
+    terms.add(nameParts.given);
+  }
+}
+
 export function buildNameTerms(character: CharacterRecord): string[] {
   const base = new Set<string>();
   const romanizedBase = new Set<string>();
@@ -73,6 +93,10 @@ export function buildNameTerms(character: CharacterRecord): string[] {
           target.add(part);
         }
       }
+
+      if (target === base) {
+        addJapaneseNameParts(character, name, base);
+      }
     }
   }