diff --git a/connection.sample.py b/connection.sample.py
index fe41a36..3911e64 100644
--- a/connection.sample.py
+++ b/connection.sample.py
@@ -1,7 +1,8 @@
 # 各変数に適切な値を設定し，ファイル名を connection.py として保存すること
 
-OPENAI_ORGANISATION: str = 'org-XXXXXXXXXXXXXXXXXXXXXXXX' \
-        # Organisation ID
-OPENAI_API_KEY: str = 'sk-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX' \
-        # API Key
+# Organisation ID
+OPENAI_ORGANISATION: str = 'org-XXXXXXXXXXXXXXXXXXXXXXXX'
+
+# API Key
+OPENAI_API_KEY: str = 'sk-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
 
diff --git a/main.py b/main.py
index e17fd3a..2833e38 100644
--- a/main.py
+++ b/main.py
@@ -22,53 +22,90 @@ class Main:
     def main (cls, goatoh_mode: bool = False) -> None:
         print (goatoh_mode)
 
+        # ウィンドゥの初期化
         pygame.init ()
         screen: pygame.Surface = pygame.display.set_mode ((1024, 768))
+
+        # 吹き出し
         balloon = pygame.transform.scale (pygame.image.load ('talking.png'),
                                           (1024, 384))
         if goatoh_mode:
             balloon = pygame.transform.flip (balloon, False, True)
+
+        # 音声再生器の初期化
         pygame.mixer.init (frequency = 44100)
+
+        # ニジカの “ぬ゛ぅ゛ぅ゛ぅ゛ん゛”
         noon = pygame.mixer.Sound ('noon.wav')
+
+        # ゴートうの “ﾑﾑﾑﾑ”
         mumumumu = pygame.mixer.Sound ('mumumumu.wav')
+
+        # ゴートうの “ｸｻﾀﾍﾞﾃﾙ!!”
         kusa = pygame.mixer.Sound ('kusa.wav')
 
+        # YouTube Chat オブジェクト
         live_chat = pytchat.create (video_id = YOUTUBE_ID)
 
+        # デバッグ・メシジのフォント
         system_font = pygame.font.SysFont ('notosanscjkjp', 24, bold = True)
+
+        # 視聴者コメントのフォント
         user_font = pygame.font.SysFont ('notosanscjkjp', 32,
                                          italic = True)
+
+        # ニジカのフォント
         nizika_font = pygame.font.SysFont ('07nikumarufont', 50)
 
+        # Youtube Chat から取得したコメントたち
         chat_items: list = []
+
+        # 会話の履歴（3 件分保持）
         histories: list = []
 
         while (True):
             screen.fill ((0, 255, 0))
 
+            # 左上に時刻表示
             for i in range (4):
                 screen.blit (
                         system_font.render (str (datetime.now ()), True, (0, 0, 0)),
                         (i % 2, i // 2 * 2))
 
             if live_chat.is_alive ():
+                # Chat オブジェクトが有効
+
+                # Chat 取得
                 chat_items: list = live_chat.get ().items
 
                 if chat_items:
+                    # 溜まってゐる Chat からランダムに 1 つ抽出
                     chat_item = random.choice (chat_items)
+
+                    # 投稿者情報を辞書化
                     chat_item.author = chat_item.author.__dict__
+
+                    # 絵文字を復元
                     chat_item.message = emoji.emojize (chat_item.message)
+
                     message: str = chat_item.message
+
+                    # ChatGPT API を呼出し，返答を取得
                     answer: str = Talk.main (message, chat_item.author['name'], histories, goatoh_mode).replace ('\n', ' ')
+
+                    # 履歴に追加
                     histories = (histories
                                  + [{'role': 'user',      'content': message},
                                     {'role': 'assistant', 'content': answer}])[(-6):]
 
+                    # ログ書込み
                     with open ('log.txt', 'a') as f:
                         f.write (f'{datetime.now ()}\t{json.dumps (chat_item.__dict__)}\t{answer}\n')
 
+                    # 吹出し描画（ニジカは上，ゴートうは下）
                     screen.blit (balloon, (0, 384) if goatoh_mode else (0, 0))
 
+                    # 視聴者コメント描画
                     screen.blit (
                             user_font.render (
                                 '> ' + (message
@@ -80,6 +117,8 @@ class Main:
                                 True,
                                 (0, 0, 0)),
                             (120, 70 + 384) if goatoh_mode else (120, 70))
+
+                    # ニジカの返答描画
                     screen.blit (
                             nizika_font.render (
                                 (answer
@@ -102,6 +141,7 @@ class Main:
 
                     pygame.display.update ()
 
+                    # 鳴く．
                     if goatoh_mode:
                         if random.random () < 0.1:
                             kusa.play ()
@@ -112,10 +152,13 @@ class Main:
 
                     time.sleep (1.5)
 
+                    # 返答の読上げを WAV ディタとして生成，取得
                     try:
                         wav: bytearray | None = Aques.main (answer, goatoh_mode)
                     except:
                         wav: None = None
+
+                    # 再生
                     if wav is not None:
                         with open ('./nizika_talking.wav', 'wb') as f:
                             f.write (wav)
@@ -124,6 +167,9 @@ class Main:
 
                     time.sleep (10)
             else:
+                # Chat オブジェクトが無効
+
+                # 再生成
                 live_chat = pytchat.create (video_id = YOUTUBE_ID)
 
             pygame.display.update ()
diff --git a/talk.py b/talk.py
index a8b17af..57da221 100644
--- a/talk.py
+++ b/talk.py
@@ -8,26 +8,39 @@ from connection import *
 
 
 class Talk:
+    # ChatGPT API 連携失敗時に返答として出力するダミー文字列
     DUMMY_RESPONSE: str = 'あいうえおかきくけこさしすせそたちつてとなにぬねの'
 
+    # 最高トークン数（もぅ少し下げてもいぃかも）
     max_tokens_count: int = 100
+
+    # 返答パターン数（1 個返せばじふぶんなので 1）
     responses_count: int = 1
+
+    # 返答のオリジナリティ（大きいほど独創性の高ぃ返答をよこしてくれる）
     temperature: float = .7
-    top_p: int = 1
+
+    # バリエーションの多さ（0. -- 1.）
+    top_p: float = 1.
 
     @classmethod
     def main (cls, message: str, name: str | None = None, histories: list = [], goatoh_mode: bool = False) -> str:
+        # ChatGPT API Organisation ID
         openai.organization = OPENAI_ORGANISATION
+
+        # ChatGPT API Key
         openai.api_key = OPENAI_API_KEY
 
+        # ChatGPT API にクエリを投げ，返答を取得する．
         answer: chat.chat_completion_message.ChatCompletionMessage | None \
                 = cls.__get_message (message, name, histories, goatoh_mode)
 
-        return cls.DUMMY_RESPONSE if answer is None else answer.content
+        return answer.content if answer is not None else cls.DUMMY_RESPONSE
 
     @classmethod
     def __get_message (cls, message: str, name: str | None, histories: list, goatoh_mode: bool = False) \
             -> chat.chat_completion_message.ChatCompletionMessage | None:
+        # プロンプト（JSON 等外部ファイルに置くことを検討）
         if goatoh_mode:
             messages: list = [{'role':    'system',
                                'content': ('回答は短く30文字程度で完結に。'
@@ -185,7 +198,7 @@ class Talk:
                                'content': '洗操歌（しーざおぐあ）歌って'},
                             
                               {'role':    'assistant',
-                               'content': ('おけだぬ゛～゛ん゛（失笑）。'
+                               'content': ('おけだぬ゛～゛ん゛（苦笑）。'
                                            + '毛巾浴帽小鸭鸭水温刚刚好♪'
                                            + '泼泼水来搓泡泡今天真是美妙♪'
                                            + '大声唱歌扭扭腰我爱洗洗澡♪'