diff --git a/.gitingore b/.gitingore
new file mode 100644
index 0000000..b51353c
--- /dev/null
+++ b/.gitingore
@@ -0,0 +1,2 @@
+/db
+/eloquent.pyi
diff --git a/main.py b/main.py
index 0fb39f0..d9a560c 100644
--- a/main.py
+++ b/main.py
@@ -71,7 +71,8 @@ def main (
     client.login (account.USER_ID, account.PASSWORD)
 
     got_kiriban_at: date = datetime.now ().date () - timedelta (days = datetime.now ().hour < 15)
-    kiriban_list: list[tuple[int, nico.VideoInfo]] = nico.get_kiriban_list (got_kiriban_at)
+    kiriban_list: list[tuple[int, nico.VideoInfo, datetime]] = (
+            nico.get_kiriban_list (got_kiriban_at))
     kiriban_interval: timedelta = ((get_kiriban_dt_to_update () - datetime.now ())
                                    / len (kiriban_list))
     next_kiriban_at = datetime.now ()
@@ -109,8 +110,9 @@ def main (
                                  root   = records[-1]['strong_ref']))
 
         if kiriban_list and datetime.now () >= next_kiriban_at:
-            (views_count, video_info) = (
+            (views_count, video_info, uploaded_at) = (
                     kiriban_list.pop (random.randint (0, len (kiriban_list) - 1)))
+            since_posted = datetime.now () - uploaded_at
             uri = f"https://www.nicovideo.jp/watch/{ video_info['contentId'] }"
             (title, description, thumbnail) = get_embed_info (uri)
             try:
@@ -120,21 +122,33 @@ def main (
                 thumb = upload.blob
             except Timeout:
                 thumb = None
+            comments = nico.get_comments (video_info['contentId'])
+            popular_comments = sorted (comments,
+                                       key      = lambda c: c.nico_count,
+                                       reverse  = True)[:10]
+            latest_comments = sorted (comments,
+                                      key       = lambda c: c.posted_at,
+                                      reverse   = True)[:10]
             embed_external = models.AppBskyEmbedExternal.Main (
                     external = models.AppBskyEmbedExternal.External (
                         title       = title,
                         description = description,
                         thumb       = thumb,
                         uri         = uri))
-            client.post (Talk.main (f"""
-ニコニコの『{ video_info['title'] }』という動画が{ views_count }再生を突破しました。
-つけられたタグは「{ '」、「'.join (video_info['tags']) }」です。
+            prompt = f"{ since_posted.days }日と{ since_posted.seconds }秒前にニコニコに投稿された『{ video_info['title'] }』という動画が{ views_count }再生を突破しました。\n"
+            if video_info['tags']:
+                prompt += f"つけられたタグは「{ '」、「'.join (video_info['tags']) }」です。\n"
+            if comments:
+                prompt += f"人気のコメントは次の通りです：「{ '」、「'.join (c.content for c in popular_comments) }」\n"
+                prompt += f"最新のコメントは次の通りです：「{ '」、「'.join (c.content for c in latest_comments) }」\n"
+            prompt += f"""
 概要には次のように書かれています：
 ```html
 { video_info['description'] }
 ```
-このことについて、ニジカちゃんからのお祝いメッセージを下さい。"""),
-                         embed = embed_external)
+このことについて、ニジカちゃんからのお祝いメッセージを下さい。
+ただし、そのメッセージ内には再生数の数値とその多さに応じたリアクション（「すっご～い！」や「しょぼ～い」など）を添えてください。"""
+            client.post (Talk.main (prompt), embed = embed_external)
             next_kiriban_at += kiriban_interval
             last_posted_at = now
 
diff --git a/nico.py b/nico.py
index 94afc34..c62b724 100644
--- a/nico.py
+++ b/nico.py
@@ -5,7 +5,7 @@
 from __future__ import annotations
 
 import os
-from datetime import date, timedelta
+from datetime import date, datetime, timedelta
 from typing import TypedDict, cast
 
 import requests
@@ -13,7 +13,7 @@ from bs4 import BeautifulSoup
 from requests.exceptions import Timeout
 from eloquent import DatabaseManager, Model
 
-from db.models import Tag, Video, VideoHistory, VideoTag
+from db.models import Comment, Tag, Video, VideoHistory, VideoTag
 
 CONFIG: dict[str, DbConfig] = { 'mysql': { 'driver':    'mysql',
                                            'host':      'localhost',
@@ -124,8 +124,8 @@ def get_video_info (
 
 def get_kiriban_list (
         base_date:  date,
-) -> list[tuple[int, VideoInfo]]:
-    kiriban_list: list[tuple[int, VideoInfo]] = []
+) -> list[tuple[int, VideoInfo, datetime]]:
+    kiriban_list: list[tuple[int, VideoInfo, datetime]] = []
 
     latest_fetched_at = cast (date, VideoHistory.max ('fetched_at'))
     previous_fetched_at = cast (date, (VideoHistory
@@ -144,11 +144,21 @@ def get_kiriban_list (
         for code in targets:
             video_info = get_video_info (code)
             if video_info is not None:
-                kiriban_list.append ((kiriban_views_count, video_info))
+                kiriban_list.append ((kiriban_views_count, video_info,
+                                      cast (Video, Video.where ('code', code).first ()).uploaded_at))
 
     return kiriban_list
 
 
+def get_comments (
+        video_code: str,
+) -> list[Comment]:
+    video = Video.where ('code', video_code).first ()
+    if video is None:
+        return []
+    return video.comments
+
+
 class DbConfig (TypedDict):
     driver:     str
     host:       str