Mr. Osomatsu (Japanese: おそ松さん, Hepburn: Osomatsu-san) is a Japanese adult comedy anime produced by Studio Pierrot, based on Fujio Akatsuka's 1962 manga series, Osomatsu-kun. Celebrating Akatsuka's eightieth birthday, the series follows the sextuplet Matsuno brothers from the original series as 20-something adults, with a more ribald sense of humor compared to Osomatsu-kun.
The first season aired in Japan between October 2015 and March 2016, with a special episode airing in December 2016. A second season aired between October 2017 and March 2018, followed by a third season from October 2020 to March 2021. A fourth season aired from July to October 2025, with an extended delay on the final episode, which premiered in June 2026. The first two seasons have been licensed in the Americas by Viz Media.
A manga adaptation by Masako Shitaro was serialized in Shueisha's You magazine from January 2016 to October 2018. It was then transferred to Shueisha's Cookie magazine, where it continued serialization from November 2018 to November 2020.
Three theatrical anime films based on the series premiered in March 2019, July 2022, and July 2023.
A spin-off short anime series titled Matsu Inu, involving alternate versions of the sextuplets as dogs, aired from October to December 2023.
Contents
Premise
The original Osomatsu-kun series followed the Matsuno brothers; Osomatsu, Karamatsu, Choromatsu, Ichimatsu, Jyushimatsu, and Todomatsu, who are all identical sextuplets who cause mischief. Mr. Osomatsu depicts the brothers as being ten years older than their original counterparts (with the action taking place in a contemporary setting). All of the brothers have now grown up into lazy NEETs, with each brother having developed their own distinguishing personality. The series follows the brothers in their everyday (and occasionally made up) lives.
Characters
Matsuno siblings
Osomatsu Matsuno (松野 おそ松, Matsuno Osomatsu)
Voiced by: Takahiro Sakurai (Japanese); Billy Kametz (English)
The eldest of the sextuplets and self-proclaimed leader of the group. An avid gambler, he spends his time playing pachinko and betting on horses. Self-centered and clueless. His trademark color is red.
Karamatsu Matsuno (松野 カラ松, Matsuno Karamatsu)
Voiced by: Yuichi Nakamura (Japanese); Ray Chase (English)
The second born of the sextuplets. Believes himself to be cooler and more popular than he really is and calls his fangirls "Karamatsu Girls." He occasionally adds English words into his sentences. Conceited, yet a bit of a doormat. His distinguishing feature is his thick eyebrows. His trademark color is blue, though he occasionally sports a leather jacket and sunglasses.
Choromatsu Matsuno (松野 チョロ松, Matsuno Choromatsu)
Voiced by: Hiroshi Kamiya (Japanese); Sean Chiplock (English)
The third born and most responsible of the sextuplets. Often acts as straight man to his siblings, but also acts as an otaku. Feigning competency. His distinguishing features are his angular mouth, smaller pupils, and his lack of a cowlick. His trademark color is green.
Ichimatsu Matsuno (松野 一松, Matsuno Ichimatsu)
Voiced by: Jun Fukuyama (Japanese); Kyle McCarley (English)
The fourth born of the sextuplets and the sharp-tongued loner of the group. A cat-loving vessel of pure, unbridled ennui. His distinguishing features are his tired eyes, scruffy hair, hunched back, and trademark color of purple.
Supporting cast
Totoko (トト子)
Voiced by: Aya Endō (Japanese); Cassandra Lee Morris (English)
The so-called heroine of the series, who desperately strives to become a fish-themed idol in order to gain fame and fortune. She has a vicious side when annoyed or side-lined, and is often vainly preoccupied with her image.
Iyami (イヤミ)
Voiced by: Kenichi Suzumura (Japanese); Keith Silverstein (English)
A gaudy con artist who was a former enemy to the sextuplets as kids. Though not as involved in get-rich-quick schemes with them as adults, he has fallen into homelessness and lives under a bridge.
Chibita (チビ太)
Voiced by: Sachi Kokuryu (Japanese); Alex Cazares (English)
Former rival of the sextuplets who now runs an oden stand that the Matsuno brothers frequently visit. Has escaped his childhood poverty and acts as the voice of reason to his non-working regulars.
Matsuzo Matsuno (松野 松造, Matsuno Matsuzō) and Matsuyo Matsuno (松野 松代, Matsuno Matsuyo)
Voiced by: Kazuhiko Inoue (Matsuzo), Kujira (Matsuyo) (Japanese); Keith Silverstein (Matsuzo), Mick Wingert (Matsuyo) (English)
The sextuplets' malaise-ridden parents, whom they still rely on and live with as adults. Matsuyo is a stay-at-home mother, while Matsuzō is the bread-winning salaryman.
Hatabō (ハタ坊)
Voiced by: Momoko Saitō (Japanese); Cherami Leigh (English)
Other characters
Shounosuke Hijirisawa (聖澤 庄之助, Hijirisawa Shōnosuke)
Voiced by: Yōji Ueda
A typically quiet bit player who makes random running appearances throughout the series, either as a joke, prop, or Easter egg.
Nozomi Takahashi (高橋 のぞみ)
Voiced by: Rina Sato
The sextuplets' high school classmate with a pair of round glasses who admires them for who they were in their high school years. Only appears in the theatrical film.
F6
Voiced by: Takahiro Sakurai, Yuichi Nakamura, Hiroshi Kamiya, Jun Fukuyama, Daisuke Ono, and Miyu Irino (Japanese); Billy Kametz, Ray Chase, Sean Chiplock, Kyle McCarley, Michael Sinterniklaas, and Max Mittelman (English)
Ikemen idol versions of the sextuplets that serve to parody bishōnen series popular amongst young women, of note Uta no Prince-sama. Alter-egos created to better adapt to "modern anime" in the now-unavailable first episode, later retconned to be a form the sextuplets take after ingesting a supplement.
Sanematsu (実松, Sanematsu)
Voiced by: Daisuke Ono
An average salaryman in a realistic world who suffers from the delusion that he's the seventh Matsuno brother. Killed in a car crash, he is later resurrected as a RoboCop pastiche.
Godmatsu (神松, Kamimatsu) and Evilmatsu (悪松, Akumatsu)
Voiced by: Kenji Nojima (Godmatsu), Tomokazu Sugita (Evilmatsu) (Japanese); Johnny Yong Bosch (Godmatsu) (English)
Production and release
Mr. Osomatsu, produced by Pierrot and animated by their Studio Pierrot division, aired between October 6, 2015, and March 29, 2016. Outside of Japan, the series aired in simulcast on Crunchyroll; marking the first media in the Osomatsu franchise to receive an official English release. The series' first episode, which featured multiple parodies, was removed from streaming sites on November 12, 2015, and is replaced by an original video animation in its home video release, occasionally referred to as "Episode 3.5". Additionally, the third episode, which features a crude parody of Anpanman, was edited for its BS Japan broadcast and is altered in its home video release.
In September 2016, animation director Kanchi Suzuki revealed on his Twitter account that he was interested in making a second season. A special episode, produced in collaboration with the Japan Racing Association, aired on December 12, 2016. A second season was announced in April 2017, having previously been teased in a listing for the Blu-ray release of "Mr. Osomatsu JRA Special 2016" (おそ松さん おうまでこばなし, Osomatsu-san Ouma de Kobanashi), and aired between October 3, 2017, and March 27, 2018.
An anime theatrical film for the franchise was announced in August 2018, with the main staff and cast from the television series returning to reprise their roles. Titled Osomatsu-san the Movie (えいがのおそ松さん, Eiga no Osomatsu-san), the film was released on March 15, 2019.
A new 7-episode short series was announced in February 2019, with the main staff and cast from the television series returning to reprise their roles. The shorts ran from March 1 to March 15, 2019.
A third season was announced in July 2020, which aired from October 13, 2020, to March 30, 2021.
Two new animated theatrical films were announced in June 2021. The first film, titled Mr. Osomatsu: Hipipo-Zoku to Kagayaku Kajitsu, premiered on July 8, 2022. Yoshinori Odaka is directing the film, with the main staff and cast reprising their roles. The second film, titled Mr. Osomatsu: The Soul's Takoyaki Party and the Legendary Sleepover Party, premiered on July 21, 2023.
Distribution
In Australia and New Zealand, Madman Entertainment released the first season on DVD on December 7, 2016, and made the series available on AnimeLab.
At their panel in Otakon 2017, Viz Media announced that they have licensed the first two seasons in North, Central and South America and simulcast the second season. Viz released the first season in North America on Blu-Ray on March 9, 2021. It does not include episode 1. The dub was initially written (including episode 1) and directed by Patrick Seitz, who both left the project for other commitments, leaving Christopher Bevins to re-write and re-record the series minus the first episode. Viz Media released the second season on Blu-ray on September 14, 2021.
Other media
A manga adaptation of Mr. Osomatsu, illustrated by Masako Shitara, began serialization in Shueisha's You magazine on January 15, 2016. It transferred to Shueisha's Cookie magazine in November 2018 after You ended its publication in October of the same year. The manga ended in Cookie on November 26, 2020. A novelization of the anime, written by Yū Mitsuru and illustrated by Naoyuki Asano, was published on July 29, 2016. A serialization focusing on the series' collaboration with the Ultraman franchise, Ultramatsu, is an ongoing manga published on LINE that takes place after the Season 1 finale.
Bandai Namco Entertainment released a party game based on the series for the Nintendo 3DS on December 22, 2016. An otome game developed by Idea Factory was released for the PlayStation Vita in 2017.
A live action adaptation movie, titled The Osomatsu-san Movie (えいがおそ松さん, Eiga Osomatsu-san), was announced in August 2021. The film was the first official live-action iteration of the franchise, directed by Tsutomu Hanabusa and starring the nine member boy band Snow Man as the Matsuno sextuplets with members Ryōta Miyadate, Shōta Watanabe, and Ryōhei Abe as original characters Period, End, and Close respectively. The group also provided the film's theme song "Brother Beat." The film premiered on March 25, 2022.
A second live-action film titled The Osomatsu-san Movie: The Plan to Turn Humanity Into Scum!!!!!? (えいがおそ松さん 人類クズ化計画！！！！！？, Eiga Osomatsu-san: Jinrui Kuzu-ka Keikaku!!!!!?) was announced in June 2025. Unlike the first live-action film, the cast now features the members of boy band Ae! Group, and Takuya Nishimura of junior group Howzit. Former Ae! Group member Keita Richard Kusama, who portrays Jyushimatsu in the film, was arrested in October 2025 on suspicion of indecent exposure, leading to both his departure from the group in November and the film's subsequent indefinite hold, later a delay from the initially-announced January 9th, 2026 to summer. The film released on June 12th, 2026.
