diff --git a/engine/types.ts b/engine/types.ts
index 407a685..25b5ad7 100644
--- a/engine/types.ts
+++ b/engine/types.ts
@@ -77,6 +77,7 @@ export interface QTEDefinition {
 export interface ChapterInfo {
   id: string
   label: string
+  labelKey?: string
   startScene: string
   thumbnail?: string
   defaultVariables?: Record<string, number>
@@ -94,6 +95,7 @@ export interface AchievementDef {
 export interface EndingDef {
   id: string
   label: string
+  labelKey?: string
   sceneId: string
   chapterId?: string
   thumbnail?: string
diff --git a/public/demo/locales/en.json b/public/demo/locales/en.json
index 1a1e3e7..d5d4d60 100644
--- a/public/demo/locales/en.json
+++ b/public/demo/locales/en.json
@@ -60,5 +60,15 @@
       "continue": "Keep moving forward",
       "back": "Turn back"
     }
+  },
+  "chapter": {
+    "ch1": "Chapter 1: Awakening",
+    "ch2": "Chapter 2: Investigation",
+    "ch3": "Chapter 3: Finale"
+  },
+  "ending": {
+    "trust_end": "Trusted Ally",
+    "alone_end": "Lone Path",
+    "continue_end": "Keep Moving Forward"
   }
 }
\ No newline at end of file
diff --git a/public/demo/locales/ja.json b/public/demo/locales/ja.json
index 0f32236..b595004 100644
--- a/public/demo/locales/ja.json
+++ b/public/demo/locales/ja.json
@@ -55,5 +55,15 @@
       "continue": "先へ進む",
       "back": "引き返す"
     }
+  },
+  "chapter": {
+    "ch1": "第一章：目覚め",
+    "ch2": "第二章：捜査",
+    "ch3": "第三章：終局"
+  },
+  "ending": {
+    "trust_end": "信頼の仲間",
+    "alone_end": "孤独の道",
+    "continue_end": "前進を続ける"
   }
 }
\ No newline at end of file
diff --git a/public/demo/locales/zh.json b/public/demo/locales/zh.json
index 3943510..fa21524 100644
--- a/public/demo/locales/zh.json
+++ b/public/demo/locales/zh.json
@@ -60,5 +60,15 @@
       "continue": "继续前进",
       "back": "回头"
     }
+  },
+  "chapter": {
+    "ch1": "第一章：醒来",
+    "ch2": "第二章：调查",
+    "ch3": "第三章：终局"
+  },
+  "ending": {
+    "trust_end": "信任的伙伴",
+    "alone_end": "独行之路",
+    "continue_end": "继续前行"
   }
 }
\ No newline at end of file
diff --git a/public/scenes/demo.json b/public/scenes/demo.json
index 0fdf14e..b72e9cb 100644
--- a/public/scenes/demo.json
+++ b/public/scenes/demo.json
@@ -39,14 +39,15 @@
     }
   ],
   "endings": [
-    { "id": "trust_end", "label": "信任的伙伴", "sceneId": "trust_ending", "chapterId": "ch1", "thumbnail": "ui/images/end_trust.jpg" },
-    { "id": "alone_end", "label": "独行之路", "sceneId": "alone_ending", "chapterId": "ch1", "thumbnail": "ui/images/end_alone.jpg" },
-    { "id": "continue_end", "label": "继续前行", "sceneId": "continue_ending", "chapterId": "ch3", "thumbnail": "ui/images/end_continue.jpg" }
+    { "id": "trust_end", "label": "信任的伙伴", "labelKey": "ending.trust_end", "sceneId": "trust_ending", "chapterId": "ch1", "thumbnail": "ui/images/end_trust.jpg" },
+    { "id": "alone_end", "label": "独行之路", "labelKey": "ending.alone_end", "sceneId": "alone_ending", "chapterId": "ch1", "thumbnail": "ui/images/end_alone.jpg" },
+    { "id": "continue_end", "label": "继续前行", "labelKey": "ending.continue_end", "sceneId": "continue_ending", "chapterId": "ch3", "thumbnail": "ui/images/end_continue.jpg" }
   ],
   "chapters": [
     {
       "id": "ch1",
       "label": "第一章：醒来",
+      "labelKey": "chapter.ch1",
       "startScene": "intro",
       "thumbnail": "ui/images/ch1.jpg",
       "defaultVariables": { "trust": 50, "courage": 0, "investigation": 0 }
@@ -54,6 +55,7 @@
     {
       "id": "ch2",
       "label": "第二章：调查",
+      "labelKey": "chapter.ch2",
       "startScene": "desk_detail",
       "thumbnail": "ui/images/ch2.jpg",
       "defaultVariables": { "trust": 60, "courage": 10, "investigation": 1 }
@@ -61,6 +63,7 @@
     {
       "id": "ch3",
       "label": "第三章：终局",
+      "labelKey": "chapter.ch3",
       "startScene": "qte_success",
       "thumbnail": "ui/images/ch3.jpg",
       "defaultVariables": { "trust": 70, "courage": 20, "investigation": 2 }
diff --git a/public/scenes/main.json b/public/scenes/your_story.json
similarity index 100%
rename from public/scenes/main.json
rename to public/scenes/your_story.json
diff --git a/src/components/StoryGallery.vue b/src/components/StoryGallery.vue
index fa4f8a6..52d6a0a 100644
--- a/src/components/StoryGallery.vue
+++ b/src/components/StoryGallery.vue
@@ -1,6 +1,9 @@
 <script setup lang="ts">
 import { computed, ref } from 'vue'
 import type { ChapterInfo, SceneNode, EndingDef } from '@engine/types'
+import { useI18n } from '@/composables/useI18n'
+
+const { t } = useI18n()
 
 const props = defineProps<{
   chapters: ChapterInfo[]
@@ -117,7 +120,7 @@ function toggleExpand(chapterId: string) {
 <template>
   <div class="story-overlay" @click.self="emit('close')" @keydown.escape="emit('close')">
     <div class="story-panel">
-      <h2 class="story-title">故事进度</h2>
+      <h2 class="story-title">{{ t('ui.story') }}</h2>
 
       <div class="story-grid">
         <div
@@ -131,7 +134,7 @@ function toggleExpand(chapterId: string) {
               <img v-if="ch.thumbnail" :src="ch.thumbnail" class="thumb-img" />
               <div v-else class="thumb-placeholder">?</div>
             </div>
-            <div class="card-label">{{ ch.label }}</div>
+            <div class="card-label">{{ t(ch.labelKey || ch.label) }}</div>
 
             <div class="card-progress" v-if="unlockedChapterIds.has(ch.id)">
               <div class="mini-progress-bar">
@@ -146,14 +149,14 @@ function toggleExpand(chapterId: string) {
                 :key="end.id"
                 class="ending-tag"
                 :class="{ unlocked: endingStatus(end.id) }"
-              >{{ endingStatus(end.id) ? '✅' : '🔒' }} {{ end.label }}</span>
+              >{{ endingStatus(end.id) ? '✅' : '🔒' }} {{ t(end.labelKey || end.label) }}</span>
             </div>
 
             <button
               v-if="unlockedChapterIds.has(ch.id)"
               class="card-start-btn"
               @click.stop="emit('startChapter', ch.id)"
-            >▶ 开始</button>
+            >▶ {{ t('ui.startChapter') }}</button>
           </div>
 
           <div class="card-recap" v-if="expandedChapterId === ch.id">
@@ -173,7 +176,7 @@ function toggleExpand(chapterId: string) {
         </div>
       </div>
 
-      <button class="story-close" @click="emit('close')">关闭</button>
+      <button class="story-close" @click="emit('close')">{{ t('ui.close') }}</button>
     </div>
   </div>
 </template>
diff --git a/src/locales/en.json b/src/locales/en.json
index 988b9fa..866ed67 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -26,6 +26,7 @@
     "achievements": "Achievements",
     "gallery": "Gallery",
     "story": "Story Progress",
+    "startChapter": "Start",
     "noAutoSave": "No auto save yet",
     "autoSaveHint": "Game auto-saves to slot 0 at each scene change",
     "language": "Language",
diff --git a/src/locales/ja.json b/src/locales/ja.json
index 41be9a3..b7cdcd9 100644
--- a/src/locales/ja.json
+++ b/src/locales/ja.json
@@ -25,6 +25,8 @@
     "pauseHint": "Esc = 再開",
     "achievements": "実績",
     "gallery": "ギャラリー",
+    "story": "ストーリー進行",
+    "startChapter": "開始",
     "noAutoSave": "オートセーブがありません",
     "autoSaveHint": "シーン切替時にスロット0に自動保存されます",
     "language": "言語",
diff --git a/src/locales/zh.json b/src/locales/zh.json
index d06fd54..c071306 100644
--- a/src/locales/zh.json
+++ b/src/locales/zh.json
@@ -26,6 +26,7 @@
     "achievements": "成就",
     "gallery": "画廊",
     "story": "故事进度",
+    "startChapter": "开始",
     "noAutoSave": "暂无自动存档",
     "autoSaveHint": "游戏会在每次场景切换时自动保存到槽位 0",
     "language": "语言",