Mr. Osomatsu (2015)
Six identical adult brothers, zero ambition, and infinite chaos — the anarchic anime comedy that revived a manga legend for a new generation.
Mr. Osomatsu - Series Information
- Original Title: おそ松さん
- First Air Year: 2015
- Last Air Year: 2025
- Type: TV Series
- Genres: Animation, Comedy
- Content Rating (US): TV-14
- Episode Runtime: Average runtime per episode (25 minutes)
- Number of Seasons: 4
- Number of Episodes: 88
- Status: Returning Series
- Original Language: Japanese
- Spoken Languages: Japanese
- First Air Date: October 5, 2015 (United States - TV-14), October 5, 2015 (Australia - M), October 5, 2015 (Brazil - 16), October 5, 2015 (South Korea - 19)
- Networks: HTB, TV Tokyo, TV Aichi, TVQ, TV Osaka, TSC
- Alternative Titles: 오소마츠 6쌍둥이 (KR), 小松先生 (CN), Osomatsu-san (JP)
- Production Companies: Daiichi Shokai, avex pictures, Pierrot, PIERROT FILMS, AT-X, Fujio Productions, dentsu, TV Tokyo
- Production Countries: Japan
Mr. Osomatsu - Plot
Sequel/spin-off of the gag manga classic Osomatsu-kun, entailing the lives of the now 20-something NEET virgin Matsuno sextuplets and the bizarre adventures they find themselves into in the modern day.
Mr. Osomatsu - Trailer
See the sextuplets in action — watch the official trailer below:
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Mr. Osomatsu - Cast & Crew
Main Cast
- Takahiro Sakurai
- Jun Fukuyama
- Aya Endo
- Yuichi Nakamura
- Kazuhiko Inoue
- Miyu Irino
- Hiroshi Kamiya
- Sachi Kokuryu
- Kujira
- Daisuke Ono
Writers
- Shu Matsubara
- Michiko Yokote
Mr. Osomatsu - FAQs
Where can you stream Mr. Osomatsu online?
Mr. Osomatsu is available to stream on Crunchyroll (subscription), Tubi TV (free with ads), Pluto TV (free with ads), and Hoopla (free). It can also be purchased or rented on Amazon Video, Apple TV Store, Google Play Movies, and Fandango At Home. Peacock Premium subscribers can also access the series.
Is Mr. Osomatsu based on a manga or earlier series?
Yes. Mr. Osomatsu is a sequel and spin-off of Osomatsu-kun, the classic gag manga created by Fujio Akatsuka, which originally ran from 1962 and received earlier anime adaptations. The 2015 series reimagines the iconic sextuplet brothers as unemployed adults navigating modern Japanese society.
Who are the main voice actors in Mr. Osomatsu?
The principal voice cast includes Takahiro Sakurai as Osomatsu, Hiroshi Kamiya as Choromatsu, Jun Fukuyama as Ichimatsu, Yuichi Nakamura as Karamatsu, Miyu Irino as Todomatsu, and Daisuke Ono as Juushimatsu. Aya Endo voices Totoko, and Kazuhiko Inoue plays the brothers' father Matsuzou.
How many seasons does Mr. Osomatsu have?
Mr. Osomatsu has four main seasons. Season 1 and Season 2 each contain 25 episodes, Season 3 also has 25 episodes, and Season 4 consists of 13 episodes. An additional collection of 30 special episodes is catalogued under Season 0, bringing the total episode count to 88.
What is Mr. Osomatsu about?
Mr. Osomatsu follows the Matsuno sextuplets — six identical adult brothers who are unemployed, unmotivated, and still living at home — as they stumble through absurd, surreal misadventures in contemporary Japan. The series blends sharp parody, meta-humor, and anarchic gag comedy rooted in the beloved Osomatsu-kun manga legacy.
Is Mr. Osomatsu still ongoing or has it ended?
Mr. Osomatsu is currently a returning series and remains in production. The show debuted in October 2015 and has continued through four seasons, with its most recent season airing in 2025. The series has maintained a dedicated fanbase throughout its decade-long run on TV Tokyo and affiliated networks.
What content rating does Mr. Osomatsu carry?
Mr. Osomatsu is rated TV-14 in the United States, indicating content that may be unsuitable for children under 14. The series contains adult humor, crude gags, and satirical content. In Australia it carries an M rating, while Brazilian and South Korean ratings classify it for viewers aged 16 and 19 respectively.
When did Mr. Osomatsu first air?
Mr. Osomatsu first aired on October 5, 2015, premiering on TV Tokyo in Japan. The series was produced by animation studio Pierrot and quickly became a cultural phenomenon, generating significant merchandise sales and renewed mainstream interest in the original Osomatsu-kun franchise.
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