Anime similar toMr. Osomatsu
Osomatsu-sanおそ松さん
TV201525 episodes
みなみけ
TV · 2007 · 13 episodesIts strongest similarities are in characters and setting and content.
Danshi Koukousei no Nichijou男子高校生の日常
TV · 2012 · 12 episodesIt matches especially well in characters, atmosphere, and narrative.
だんちがい
TV_SHORT · 2015 · 12 episodesIts strongest similarities are in characters and setting and content.
Nichijou日常
TV · 2011 · 26 episodesIts strongest similarities are in characters and narrative.
Asobi Asobaseあそびあそばせ
TV · 2018 · 12 episodesIts strongest similarities are in atmosphere and narrative.
Ani ni Tsukeru Kusuri wa Nai!兄に付ける薬はない！
ONA · 2017 · 12 episodesIts strongest similarities are in characters and setting and content.
Ichigo Mashimaro苺ましまろ
TV · 2005 · 12 episodesIts strongest similarities are in characters and setting and content.
Grand Blueぐらんぶる
TV · 2018 · 12 episodesIts strongest similarities are in themes and atmosphere.
カーニバル・ファンタズム
OVA · 2011 · 12 episodesIts strongest similarities are in narrative and atmosphere.
Bungou Stray Dogs Wan!文豪ストレイドッグス わん！
TV_SHORT · 2021 · 12 episodesIts strongest similarities are in characters and narrative.
TV · 2025 · 13 episodesIt matches especially well in narrative, atmosphere, and setting and content. 
Sakigake!! Cromartie Koukou魁!!クロマティ高校
TV_SHORT · 2003 · 26 episodesIts strongest similarities are in narrative and atmosphere.
銀魂
TV · 2006 · 201 episodesIt matches especially well in setting and content, narrative, and characters.
Aho-Girlアホガール
TV_SHORT · 2017 · 12 episodesIts strongest similarities are in narrative and atmosphere.
Gabriel Dropoutガヴリールドロップアウト
TV · 2017 · 12 episodesIts strongest similarities are in characters and narrative.
Yuru Yuriゆるゆり
TV · 2011 · 12 episodesIts strongest similarities are in narrative and atmosphere.
TV · 2010 · 13 episodesIt stands out most for characters similarity, with atmosphere as the next strongest match. 
Gokushufudou極主夫道
ONA · 2021 · 5 episodesIts strongest similarities are in atmosphere and setting and content.
異世界かるてっと
TV_SHORT · 2019 · 12 episodesIts strongest similarities are in characters and narrative.
干物妹！うまるちゃん
TV · 2015 · 12 episodesIts strongest similarities are in characters and setting and content.