The Missing Finale Finds Its Way Home
Mr. Osomatsu Season 4 ran 12 episodes on TV Tokyo from July through September 2025, but Episode 13 never aired. The finale, titled "The Matsuno Ten," was held back from the broadcast run entirely, leaving fans with an incomplete season for nearly a year.
The episode finally surfaced during the "10th Anniversary Osomatsusan Special 6Days," a limited theatrical event screening that ran from June 6 to 11, 2026. According to the announcement, fan demand after those screenings prompted the decision to release the episode on TV and streaming platforms.
Studio Pierrot, which produced the season, has kept details about "The Matsuno Ten" sparse. Newly released scene stills show the six Matsuno brothers holding microphones, hinting at some kind of performance or musical number. What the sextuplets actually get up to remains to be seen.
Broadcast and Streaming Schedule
The rollout is staggered across platforms:
- Early streaming (June 12, 2026): Anime Times, Lemino, U-NEXT, and Anime Hodai began offering the episode at midnight JST.
- TV broadcast (June 13, 2026): The episode airs at 9:30 AM on TV Tokyo's six-station network.
- AT-X (June 20, 2026): An additional broadcast at 8:30 PM, with repeat airings.
- General streaming (June 16, 2026): Wider platform availability begins.
The full voice cast returns for the finale, including Takahiro Sakurai as Osomatsu, Yuichi Nakamura as Karamatsu, Hiroshi Kamiya as Choromatsu, Jun Fukuyama as Ichimatsu, Daisuke Ono as Jyushimatsu, and Miyu Irino as Todomatsu.
A Decade of the Matsuno Brothers
Mr. Osomatsu launched in 2015 as an 80th birthday tribute to original manga creator Fujio Akatsuka. The show reimagines Akatsuka's Osomatsu-kun sextuplets as adults who are, to put it charitably, not thriving. They're unemployed, unmotivated, and perpetually single, but their chaotic daily lives turned the series into a massive hit that ran four seasons and a theatrical film.
Season 4 marked the franchise's 10th anniversary, promising new faces, new chaos, and previously unseen sides of the brothers. Yoshinori Odaka directed the season at Studio Pierrot, with Shu Matsubara handling series composition and Eiji Abiko on character design.
Looking Ahead
Crunchyroll, which streamed Season 4 across North America, Europe, Latin America, Oceania, Africa, the Middle East, and the CIS, is also carrying the Episode 13 debut for international viewers. Fans outside Japan can watch "The Matsuno Ten" on the platform now.
With the finale finally reaching the full audience, Season 4's run is complete. No further Mr. Osomatsu projects have been announced, but the franchise has a track record of returning when least expected.