diff --git a/lib/data/game_text_l10n.dart b/lib/data/game_text_l10n.dart
index 5a7492f..450c29d 100644
--- a/lib/data/game_text_l10n.dart
+++ b/lib/data/game_text_l10n.dart
@@ -178,12 +178,12 @@ String modifierSick(String s) => isKoreanLocale ? '병든 $s' : 'sick $s';
 String modifierUndernourished(String s) =>
     isKoreanLocale ? '영양실조 $s' : 'undernourished $s';
 
-String modifierFoetal(String s) => isKoreanLocale ? '태아 $s' : 'foetal $s';
-String modifierBaby(String s) => isKoreanLocale ? '아기 $s' : 'baby $s';
+String modifierFoetal(String s) => isKoreanLocale ? '원시 $s' : 'primordial $s';
+String modifierBaby(String s) => isKoreanLocale ? '미숙한 $s' : 'immature $s';
 String modifierPreadolescent(String s) =>
-    isKoreanLocale ? '사춘기 전 $s' : 'preadolescent $s';
-String modifierTeenage(String s) => isKoreanLocale ? '십대 $s' : 'teenage $s';
-String modifierUnderage(String s) => isKoreanLocale ? '미성년 $s' : 'underage $s';
+    isKoreanLocale ? '성장 중인 $s' : 'growing $s';
+String modifierTeenage(String s) => isKoreanLocale ? '어린 $s' : 'young $s';
+String modifierUnderage(String s) => isKoreanLocale ? '경험 부족 $s' : 'inexperienced $s';
 
 String modifierGreater(String s) => isKoreanLocale ? '상위 $s' : 'greater $s';
 String modifierMassive(String s) => isKoreanLocale ? '거대한 $s' : 'massive $s';
diff --git a/lib/data/game_translations_ko.dart b/lib/data/game_translations_ko.dart
index 42fe777..52c8255 100644
--- a/lib/data/game_translations_ko.dart
+++ b/lib/data/game_translations_ko.dart
@@ -1,4 +1,4 @@
-// 아스키나라(ASCII-Nara) 한국어 번역 데이터
+// ASCII NEVER DIE 한국어 번역 데이터
 // 게임 데이터의 한국어 번역을 제공합니다.
 
 /// 종족 이름 한국어 번역
diff --git a/lib/data/pq_config_data.dart b/lib/data/pq_config_data.dart
index ce2ee46..f828e69 100644
--- a/lib/data/pq_config_data.dart
+++ b/lib/data/pq_config_data.dart
@@ -1,4 +1,4 @@
-// 아스키나라(ASCII-Nara) 세계관 게임 데이터
+// ASCII NEVER DIE 세계관 게임 데이터
 // 코드의 신이 창조한 디지털 판타지 세계
 
 const Map<String, List<String>> pqConfigData = {
diff --git a/lib/l10n/app_en.arb b/lib/l10n/app_en.arb
index 976c87c..9e4b308 100644
--- a/lib/l10n/app_en.arb
+++ b/lib/l10n/app_en.arb
@@ -1,7 +1,7 @@
 {
   "@@locale": "en",
 
-  "appTitle": "ASCII-Nara",
+  "appTitle": "ASCII NEVER DIE",
   "@appTitle": { "description": "Application title" },
 
   "tagNoNetwork": "No network",
@@ -46,7 +46,7 @@
   "saveAndExit": "Save and Exit",
   "@saveAndExit": { "description": "Save and exit button" },
 
-  "progressQuestTitle": "ASCII-Nara - {name}",
+  "progressQuestTitle": "ASCII NEVER DIE - {name}",
   "@progressQuestTitle": {
     "description": "Game screen title with character name",
     "placeholders": {
@@ -201,7 +201,7 @@
     }
   },
 
-  "welcomeMessage": "Welcome to ASCII-Nara!",
+  "welcomeMessage": "Welcome to ASCII NEVER DIE!",
   "@welcomeMessage": { "description": "Welcome message in task progress panel" },
 
   "noSavedGames": "No saved games found.",
@@ -244,7 +244,7 @@
     }
   },
 
-  "newCharacterTitle": "ASCII-Nara - New Character",
+  "newCharacterTitle": "ASCII NEVER DIE - New Character",
   "@newCharacterTitle": { "description": "New character screen title" },
 
   "soldButton": "Sold!",
diff --git a/lib/l10n/app_ja.arb b/lib/l10n/app_ja.arb
index 59ec13d..b88919a 100644
--- a/lib/l10n/app_ja.arb
+++ b/lib/l10n/app_ja.arb
@@ -1,7 +1,7 @@
 {
   "@@locale": "ja",
 
-  "appTitle": "Ascii Never Die",
+  "appTitle": "ASCII NEVER DIE",
   "tagNoNetwork": "No network",
   "tagIdleRpg": "Idle RPG loop",
   "tagLocalSaves": "Local saves",
@@ -72,6 +72,6 @@
   "race": "Race",
   "classTitle": "Class",
   "percentComplete": "{percent}% complete",
-  "newCharacterTitle": "ASCII-Nara - New Character",
+  "newCharacterTitle": "ASCII NEVER DIE - New Character",
   "soldButton": "Sold!"
 }
diff --git a/lib/l10n/app_ko.arb b/lib/l10n/app_ko.arb
index dbe72fd..56ef129 100644
--- a/lib/l10n/app_ko.arb
+++ b/lib/l10n/app_ko.arb
@@ -1,7 +1,7 @@
 {
   "@@locale": "ko",
 
-  "appTitle": "아스키나라",
+  "appTitle": "아스키 네버 다이",
   "tagNoNetwork": "오프라인",
   "tagIdleRpg": "방치형 RPG",
   "tagLocalSaves": "로컬 저장",
@@ -16,7 +16,7 @@
   "saveProgressQuestion": "나가기 전에 저장하시겠습니까?",
   "exitWithoutSaving": "저장하지 않고 종료",
   "saveAndExit": "저장 후 종료",
-  "progressQuestTitle": "아스키나라 - {name}",
+  "progressQuestTitle": "아스키 네버 다이 - {name}",
   "levelUp": "레벨 업",
   "completeQuest": "퀘스트 완료",
   "completePlot": "플롯 완료",
@@ -61,7 +61,7 @@
   "actNumber": "{number}막",
   "noActiveQuests": "진행 중인 퀘스트 없음",
   "questNumber": "퀘스트 #{number}",
-  "welcomeMessage": "아스키나라에 오신 것을 환영합니다!",
+  "welcomeMessage": "아스키 네버 다이에 오신 것을 환영합니다!",
   "noSavedGames": "저장된 게임이 없습니다.",
   "loadError": "저장 파일 로드 실패: {error}",
   "name": "이름",
@@ -72,6 +72,6 @@
   "race": "종족",
   "classTitle": "직업",
   "percentComplete": "{percent}% 완료",
-  "newCharacterTitle": "아스키나라 - 새 캐릭터",
+  "newCharacterTitle": "아스키 네버 다이 - 새 캐릭터",
   "soldButton": "확인!"
 }
diff --git a/lib/l10n/app_localizations.dart b/lib/l10n/app_localizations.dart
index e8ca1e4..b18da1e 100644
--- a/lib/l10n/app_localizations.dart
+++ b/lib/l10n/app_localizations.dart
@@ -104,7 +104,7 @@ abstract class L10n {
   /// Application title
   ///
   /// In en, this message translates to:
-  /// **'ASCII-Nara'**
+  /// **'ASCII NEVER DIE'**
   String get appTitle;
 
   /// Tag indicating offline mode
@@ -194,7 +194,7 @@ abstract class L10n {
   /// Game screen title with character name
   ///
   /// In en, this message translates to:
-  /// **'ASCII-Nara - {name}'**
+  /// **'ASCII NEVER DIE - {name}'**
   String progressQuestTitle(String name);
 
   /// Level up tooltip
@@ -464,7 +464,7 @@ abstract class L10n {
   /// Welcome message in task progress panel
   ///
   /// In en, this message translates to:
-  /// **'Welcome to ASCII-Nara!'**
+  /// **'Welcome to ASCII NEVER DIE!'**
   String get welcomeMessage;
 
   /// No saved games message
@@ -530,7 +530,7 @@ abstract class L10n {
   /// New character screen title
   ///
   /// In en, this message translates to:
-  /// **'ASCII-Nara - New Character'**
+  /// **'ASCII NEVER DIE - New Character'**
   String get newCharacterTitle;
 
   /// Confirm character creation button
diff --git a/lib/l10n/app_localizations_en.dart b/lib/l10n/app_localizations_en.dart
index 9ad4474..7944e3f 100644
--- a/lib/l10n/app_localizations_en.dart
+++ b/lib/l10n/app_localizations_en.dart
@@ -9,7 +9,7 @@ class L10nEn extends L10n {
   L10nEn([String locale = 'en']) : super(locale);
 
   @override
-  String get appTitle => 'ASCII-Nara';
+  String get appTitle => 'ASCII NEVER DIE';
 
   @override
   String get tagNoNetwork => 'No network';
@@ -55,7 +55,7 @@ class L10nEn extends L10n {
 
   @override
   String progressQuestTitle(String name) {
-    return 'ASCII-Nara - $name';
+    return 'ASCII NEVER DIE - $name';
   }
 
   @override
@@ -197,7 +197,7 @@ class L10nEn extends L10n {
   }
 
   @override
-  String get welcomeMessage => 'Welcome to ASCII-Nara!';
+  String get welcomeMessage => 'Welcome to ASCII NEVER DIE!';
 
   @override
   String get noSavedGames => 'No saved games found.';
@@ -234,7 +234,7 @@ class L10nEn extends L10n {
   }
 
   @override
-  String get newCharacterTitle => 'ASCII-Nara - New Character';
+  String get newCharacterTitle => 'ASCII NEVER DIE - New Character';
 
   @override
   String get soldButton => 'Sold!';
diff --git a/lib/l10n/app_localizations_ja.dart b/lib/l10n/app_localizations_ja.dart
index 51156c1..6e27da9 100644
--- a/lib/l10n/app_localizations_ja.dart
+++ b/lib/l10n/app_localizations_ja.dart
@@ -9,7 +9,7 @@ class L10nJa extends L10n {
   L10nJa([String locale = 'ja']) : super(locale);
 
   @override
-  String get appTitle => 'Ascii Never Die';
+  String get appTitle => 'ASCII NEVER DIE';
 
   @override
   String get tagNoNetwork => 'No network';
@@ -234,7 +234,7 @@ class L10nJa extends L10n {
   }
 
   @override
-  String get newCharacterTitle => 'ASCII-Nara - New Character';
+  String get newCharacterTitle => 'ASCII NEVER DIE - New Character';
 
   @override
   String get soldButton => 'Sold!';
diff --git a/lib/l10n/app_localizations_ko.dart b/lib/l10n/app_localizations_ko.dart
index 32620fd..c6aca6d 100644
--- a/lib/l10n/app_localizations_ko.dart
+++ b/lib/l10n/app_localizations_ko.dart
@@ -9,7 +9,7 @@ class L10nKo extends L10n {
   L10nKo([String locale = 'ko']) : super(locale);
 
   @override
-  String get appTitle => '아스키나라';
+  String get appTitle => '아스키 네버 다이';
 
   @override
   String get tagNoNetwork => '오프라인';
@@ -55,7 +55,7 @@ class L10nKo extends L10n {
 
   @override
   String progressQuestTitle(String name) {
-    return '아스키나라 - $name';
+    return '아스키 네버 다이 - $name';
   }
 
   @override
@@ -197,7 +197,7 @@ class L10nKo extends L10n {
   }
 
   @override
-  String get welcomeMessage => '아스키나라에 오신 것을 환영합니다!';
+  String get welcomeMessage => '아스키 네버 다이에 오신 것을 환영합니다!';
 
   @override
   String get noSavedGames => '저장된 게임이 없습니다.';
@@ -234,7 +234,7 @@ class L10nKo extends L10n {
   }
 
   @override
-  String get newCharacterTitle => '아스키나라 - 새 캐릭터';
+  String get newCharacterTitle => '아스키 네버 다이 - 새 캐릭터';
 
   @override
   String get soldButton => '확인!';
diff --git a/lib/l10n/app_localizations_zh.dart b/lib/l10n/app_localizations_zh.dart
index 88f1826..32ecf06 100644
--- a/lib/l10n/app_localizations_zh.dart
+++ b/lib/l10n/app_localizations_zh.dart
@@ -9,7 +9,7 @@ class L10nZh extends L10n {
   L10nZh([String locale = 'zh']) : super(locale);
 
   @override
-  String get appTitle => 'Ascii Never Die';
+  String get appTitle => 'ASCII NEVER DIE';
 
   @override
   String get tagNoNetwork => 'No network';
@@ -234,7 +234,7 @@ class L10nZh extends L10n {
   }
 
   @override
-  String get newCharacterTitle => 'ASCII-Nara - New Character';
+  String get newCharacterTitle => 'ASCII NEVER DIE - New Character';
 
   @override
   String get soldButton => 'Sold!';
diff --git a/lib/l10n/app_zh.arb b/lib/l10n/app_zh.arb
index 40d712b..44e39b6 100644
--- a/lib/l10n/app_zh.arb
+++ b/lib/l10n/app_zh.arb
@@ -1,7 +1,7 @@
 {
   "@@locale": "zh",
 
-  "appTitle": "Ascii Never Die",
+  "appTitle": "ASCII NEVER DIE",
   "tagNoNetwork": "No network",
   "tagIdleRpg": "Idle RPG loop",
   "tagLocalSaves": "Local saves",
@@ -72,6 +72,6 @@
   "race": "Race",
   "classTitle": "Class",
   "percentComplete": "{percent}% complete",
-  "newCharacterTitle": "ASCII-Nara - New Character",
+  "newCharacterTitle": "ASCII NEVER DIE - New Character",
   "soldButton": "Sold!"
 }
diff --git a/lib/src/app.dart b/lib/src/app.dart
index 3a11d0b..348e5c5 100644
--- a/lib/src/app.dart
+++ b/lib/src/app.dart
@@ -51,7 +51,7 @@ class _AskiiNeverDieAppState extends State<AskiiNeverDieApp> {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: 'Ascii Never Die',
+      title: 'ASCII NEVER DIE',
       debugShowCheckedModeBanner: false,
       localizationsDelegates: L10n.localizationsDelegates,
       supportedLocales: L10n.supportedLocales,
diff --git a/lib/src/core/engine/progress_service.dart b/lib/src/core/engine/progress_service.dart
index eeaf428..71720b9 100644
--- a/lib/src/core/engine/progress_service.dart
+++ b/lib/src/core/engine/progress_service.dart
@@ -38,7 +38,7 @@ class ProgressService {
   /// 새 게임 초기화 (원본 GoButtonClick, Main.pas:741-767)
   /// Prologue 태스크들을 큐에 추가하고 첫 태스크 시작
   GameState initializeNewGame(GameState state) {
-    // 초기 큐 설정 - 아스키나라(ASCII-Nara) 세계관 프롤로그 (l10n 지원)
+    // 초기 큐 설정 - ASCII NEVER DIE 세계관 프롤로그 (l10n 지원)
     final prologueTexts = l10n.prologueTexts;
     final initialQueue = <QueueEntry>[
       QueueEntry(
diff --git a/test/features/game_play_screen_test.dart b/test/features/game_play_screen_test.dart
index 6c87406..f3ddae9 100644
--- a/test/features/game_play_screen_test.dart
+++ b/test/features/game_play_screen_test.dart
@@ -98,8 +98,8 @@ void main() {
       _buildTestApp(GamePlayScreen(controller: controller)),
     );
 
-    // AppBar 타이틀 확인 (L10n 사용) - 아스키나라 세계관
-    expect(find.textContaining('ASCII-Nara'), findsOneWidget);
+    // AppBar 타이틀 확인 (L10n 사용) - ASCII NEVER DIE
+    expect(find.textContaining('ASCII NEVER DIE'), findsOneWidget);
 
     // 3패널 헤더 확인
     expect(find.text('Character Sheet'), findsOneWidget);
diff --git a/test/features/new_character_screen_test.dart b/test/features/new_character_screen_test.dart
index 8171648..4211035 100644
--- a/test/features/new_character_screen_test.dart
+++ b/test/features/new_character_screen_test.dart
@@ -20,7 +20,7 @@ void main() {
     );
 
     // 화면 타이틀 확인 (l10n 적용됨)
-    expect(find.text('ASCII-Nara - New Character'), findsOneWidget);
+    expect(find.text('ASCII NEVER DIE - New Character'), findsOneWidget);
 
     // 종족 섹션 확인
     expect(find.text('Race'), findsOneWidget);
diff --git a/test/widget_test.dart b/test/widget_test.dart
index 7e6365a..c6bc0b6 100644
--- a/test/widget_test.dart
+++ b/test/widget_test.dart
@@ -7,15 +7,15 @@ void main() {
   ) async {
     await tester.pumpWidget(const AskiiNeverDieApp());
 
-    // 프런트 화면이 렌더링되었는지 확인 (아스키나라 세계관)
-    expect(find.text('ASCII-Nara'), findsOneWidget);
+    // 프런트 화면이 렌더링되었는지 확인
+    expect(find.text('ASCII NEVER DIE'), findsOneWidget);
 
     // "New character" 버튼 탭
     await tester.tap(find.text('New character'));
     await tester.pumpAndSettle();
 
     // NewCharacterScreen으로 이동했는지 확인 (l10n 적용됨)
-    expect(find.text('ASCII-Nara - New Character'), findsOneWidget);
+    expect(find.text('ASCII NEVER DIE - New Character'), findsOneWidget);
     expect(find.text('Race'), findsOneWidget);
     expect(find.text('Class'), findsOneWidget);
     expect(find.text('Sold!'), findsOneWidget);