diff --git a/main.py b/main.py
index a76631b..399d385 100644
--- a/main.py
+++ b/main.py
@@ -58,6 +58,7 @@ def main (
 
     last_posted_at = datetime.now () - timedelta (hours = 6)
     has_got_snack_time = False
+    watched_videos = []
     while True:
         now = datetime.now ()
 
@@ -86,6 +87,20 @@ def main (
                                       parent = records[0]['strong_ref'],
                                       root   = records[-1]['strong_ref']))
 
+        for datum in [e for e in get_nico_deerjika ()
+                        if e['contentId'] not in watched_videos]:
+            watched_videos += [datum['contentId']]
+
+            client.send_post (Talk.main (f"""
+ニコニコに『{ datum['title'] }』という動画がアップされました。
+つけられたタグは「{ '」、「'.join (datum['tags']) }」です。
+概要には次のように書かれています：
+```html
+{ datum['description'] }
+```
+このことについて、みんなに告知するとともに、ニジカちゃんの感想を教えてください。
+"""))
+
         if now.hour == 14 and has_got_snack_time:
             has_got_snack_time = False
 
@@ -127,25 +142,32 @@ def get_nico_deerjika ():
            '/contents/search')
 
     now = datetime.now ()
+    base = now - timedelta (hours = 1)
 
     params = { 'q':          '伊地知ニジカ',
-               'targets':    'tagsExact',
+               'targets':    'tags',
                '_sort':      '-startTime',
                'fields':     'contentId,title,description,tags,startTime',
-               '_limit':     1,
+               '_limit':     20,
                'jsonFilter': json.dumps ({ 'type':    'or',
                                            'filters': [{
             'type':          'range',
             'field':         'startTime',
-            'from':          ('%04d-%02d-%02dT00:00:00+09:00'
-                              % (now.year, now.month, now.day)),
+            'from':          ('%04d-%02d-%02dT%02d:%02d:00+09:00'
+                              % (base.year, base.month, base.day,
+                                 base.hour, base.minute)),
             'to':            ('%04d-%02d-%02dT23:59:59+09:00'
                               % (now.year, now.month, now.day)),
             'include_lower': True }] }) }
 
     res = requests.get (URL, params = params).json ()
 
-    return res['data'][0] if len (res['data']) > 0 else None
+    data = []
+    for datum in res['data']:
+        datum['tags'] = datum['tags'].split ()
+        data.append (datum)
+
+    return data
 
 
 if __name__ == '__main__':