diff --git a/nico.py b/nico.py
index 4fd8a28..419438a 100644
--- a/nico.py
+++ b/nico.py
@@ -29,7 +29,8 @@ KIRIBAN_VIEWS_COUNTS: list[int] = sorted ({ *range (1_000, 10_000, 1_000),
                                             *range (10_000, 1_000_001, 10_000),
                                             194, 245, 510, 810, 114_514, 1_940, 2_450, 5_100,
                                             19_400, 24_500, 51_000, 93_194, 2_424, 242_424, 1_919,
-                                            4_545, 194_245, 245_194, 510_245 })
+                                            4_545, 194_245, 245_194, 510_245 },
+                                          reverse = True)
 
 class VideoInfo (TypedDict):
     contentId:      str
@@ -134,17 +135,19 @@ def get_kiriban_list (
                                        .max ('fetched_at')))
 
     for kiriban_views_count in KIRIBAN_VIEWS_COUNTS:
-        targets = ({ vh.video.code for vh in (VideoHistory
-                                              .where ('fetched_at', latest_fetched_at)
-                                              .where ('views_count', '>=', kiriban_views_count)
-                                              .get ()) }
-                   - { vh.video.code for vh in (VideoHistory
-                                                .where ('fetched_at', previous_fetched_at)
-                                                .where ('views_count', '>=', kiriban_views_count)
-                                                .get ()) })
+        targets = { vh.video.code for vh in (VideoHistory
+                                             .where ('fetched_at', latest_fetched_at)
+                                             .where ('views_count', '>=', kiriban_views_count)
+                                             .get ()) }
         for code in targets:
             if code in [kiriban[1]['contentId'] for kiriban in kiriban_list]:
                 continue
+            previous_views_count = cast (int, (VideoHistory
+                                               .where ('code', code)
+                                               .where ('fetched_at', '<', latest_fetched_at)
+                                               .max ('views_count')))
+            if previous_views_count >= kiriban_views_count:
+                continue
             video_info = get_video_info (code)
             if video_info is not None:
                 kiriban_list.append ((kiriban_views_count, video_info,