The oldest and leader of the sextuplets, as well as the best fighter in the group. In the 1993 one-shot story Osomatsu-kun Grows Up, he has become a typical salaryman and is unmarried. His name comes from osomatsu (お粗末), which means lame or ill-prepared in Japanese.

The Matsuno sextuplets (leader Osomatsu, wannabe tough guy Karamatsu, straight man Choromatsu, cynical Ichimatsu, cheerfully stupid Jyushimatsu and lovable spoiled Todomatsu) are now in their 20s, still living together in the same house as NEETs. Their neighbors still include such eccentric characters as fish market idol Totoko, loud bucktoothed troublemaker Iyami, tiny rival Chiba, wacky inventor Dekapan, and giant mouthed glutton Dayon. 
 
Join the Matsuno siblings as they overcome mundane hurdles in their daily lives, such as finding employment, figure out who should pay the bar bill, and who should get the extra pastry!

__Height:__ 177 cm (5'9.75")

On October 26, 2022, it was reported that Sakurai had been engaging in an extramarital affair with a writer of his *P.S. Genki Desu. Takahiro* radio program. A month prior, it was publicly disclosed that he had been married to a former voice actress for nearly 20 years, although the writer had allegedly not been aware of his marriage as they had been in a relationship for 10 years and intending to marry. His previously announced roles as [Haruaki Karuma](https://anilist.co/character/290233) in [AYAKA](https://anilist.co/anime/155982/AYAKA/) and [Kusuriuri](https://anilist.co/character/2865) in [Mononoke (Movie)](https://anilist.co/anime/151117/Mononoke-Movie/) had been recast as a result.

On March 31, 2023, it was jointly announced with his talent agency "Intention" that they are ending their contract, as Sakurai requested to leave as a way of taking sole responsibility of his actions and for self-reflection.

Non-Anime Roles:
-Passenger in "Arknights" (VG/Mobile) (Japanese)
-Su in "Honkai Impact 3rd" (VG) (Japanese)
-Cloud Strife in "FINAL FANTASY 7 REMAKE" (Japanese)
Crow Armbrust - The Legend of Heroes Series (VG)

__Residency:__ Los Angeles, California, USA

__[Website](https://www.billykametz.com/) | [Twitter](https://twitter.com/BillyKametz)__

__Billy Kametz__ was an American voice actor.

The third season of Osomatsu-san.

The film centers on the sextuplets at a high school class reunion. There, they see all their former classmates who have become "proper" adults with company jobs. The sextuplets sulk about this and go home and drink until they fall asleep. But when they wake up, a certain scene awaits them. 

(Source: Anime News Network)

The would-be hijinks of the mischievous Matsuno sextuplets are hijacked from episode one by colorful buck-toothed con man Iyami and Chibita, his bald munchkin sidekick. Nearly every episode is a standalone comedy cavalcade with the above cast as well as other quirky locals who show up in a number of different roles as the series shifts effortlessly between time periods and genres, but in most cases, Iyami and Chibita are front and center as partners in crime, a couple of sad sacks scraping by but carrying out scammy schemes in order to get rich quick. 
(Source: Discotek Media)

The fourth season of Osomatsu-san.

In Osomatsu-san: Hipipo-zoku to Kagayaku Kajitsu, the sextuplets embark on a grand adventure in search of a legendary fruit that is said to grant the greatest wish of whomever consumes it. 
(Source: Crunchyroll, edited) 

Note: To commemorate the 6th anniversary of Osomatsu-san anime, two new animation projects that will have a theatrical release were announced at the "Fes Matsu-san '21" event, with one in 2022, and the other the following year.

In Osomatsu-san: Tamashii no Takoyaki Party to Densetsu no Otomari-kai, the story begins with the sextuplets prepping for a takoyaki-cooking party at their home, before everything goes haywire when Totoko implies a sleepover. 

(Source: Anime News Network, edited)
 

Note: To commemorate the 6th anniversary of Osomatsu-san anime, two new animation projects that will have a theatrical release were announced at the "Fes Matsu-san '21" event, with one in 2022, and the other the following year.

A wacky comedy about identical sextuplets causing wild pranks. Each episode features 2 stories. 
 
Note: The original 1966 broadcast of Osomatsu-kun ran over 60 time slots. Four of these were entirely rerun content, while eight others featured one new half-episode and one rerun.

[Wiki (en)](https://en.wikipedia.org/wiki/Midori_Katō) | [Wiki (jp)](https://ja.wikipedia.org/wiki/加藤みどり)

Midori Katou is a Japanese actress and narrator who is most famous for the role of Sazae Fuguta from the long-running family anime Sazae-san. She is also known for voicing Yoshiko in Sally the Witch and Osomatsu Matsuno in Osomatsu-kun (1966).

On October 6, 2019, she received the Guinness World Record for *"the longest career as a voice actor for the same character in an animated television series"* for voicing Sazae, which she shares with [Takako Sasuga](https://anilist.co/staff/104803) the voice of Tarao from the same show.

Matsuno household has six naughty and mischievous sons (who are sextuplets), led by the eldest Osomatsu. They were grade schoolers back in the Showa period, but despite of still living in the same old household, the street view as well as the life style of modern day society have changed drastically.
 
The manga holds an original story, completely different from the one in the anime.
 
Note: Chapter count includes 1 extra.

A special episode of Osomatsu-san made in collaboration with the Japan Racing Association (JRA).

Shorts included in the Osomatsu-san BD & DVD releases.