Mr. Osomatsu 4th season cover

Mr. Osomatsu 4th season

  • Comedy
  • Sci-Fi
  • Slice of Life
  • FINISHED
  • TV
  • 58
  • 2025
  • 13 EP

The fourth season of Osomatsu-san.

The sextuplets run amok for a fourth time! Now adults in their 20s, they are still unemployed, undertrained, and single…but there’s something lovable about Japan’s most famous sextuplets. As a new chaotic adventure begins, what’s next? New friends? New trouble? And perhaps a new side to the sextuplets? Let’s all laugh together with these brothers who are beyond any hope.

Notes:

- Initially meant to air its episode 13 on October 1st, 2025, though instead aired an episode 12.5. After airing episode 12.5, the production stated the actual episode 13 was in production, however delayed indefinitely

- The 13th episode was later announced as a part of the Osomatsu-san 10th anniversary event in 2026, where it first received a limited theatrical pre-screening between June 6th to June 11th, with a later early streaming release taking place from June 12th. It was then finally broadcast on June 13th, 2026.

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  1. 01

    It's Starting Again

  2. 02

    Watermelon Alien

  3. 03

    Thunderstorms and Crew Cuts

  4. 04

    Temple Festival

  5. 05

    Rest / Fishing Hermit

  6. 06

    Fans and Time Machines

  7. 07

    Storytime, Jo

  8. 08

    Ichimatsu and the Thieving Cat

  9. 09

    The Idiot Series

  10. 10

    Iyami and the Shy Little Alien

  11. 11

    The Sextuplets Have the Same Dream

  12. 12

    The End of Summer

  13. 13

    The Matsuno Ten

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Osomatsu-kun SIDE STORY

Osomatsu-kun
Osomatsu-kun (1988) SIDE STORY

Osomatsu-kun (1988)
Osomatsu-kun: Suika no Hoshi kara Konnichiwa zansu! SIDE STORY

Osomatsu-kun: Suika no Hoshi kara Konnichiwa zansu!
Mr. Osomatsu 1

Mr. Osomatsu
Mr. Osomatsu Episode 3.5 SIDE STORY

Mr. Osomatsu Episode 3.5
Mr. Osomatsu Short Film Series SIDE STORY

Mr. Osomatsu Short Film Series
Mutsugo to Ouma no Monogatari SIDE STORY

Mutsugo to Ouma no Monogatari
Mr. Osomatsu JRA Special 2016 SIDE STORY

Mr. Osomatsu JRA Special 2016
Mr. Osomatsu 2nd season 2

Mr. Osomatsu 2nd season
dMatsu-san SIDE STORY

dMatsu-san
Osomatsu-san 2 Short Film Series SIDE STORY

Osomatsu-san 2 Short Film Series
Mr. Osomatsu the Movie: Prologue Theater SIDE STORY

Mr. Osomatsu the Movie: Prologue Theater
Mr. Osomatsu THE MOVIE 3

Mr. Osomatsu THE MOVIE
Osomatsu-san Movie: Gekijou Koukai Kinen - Original Tanpen Gekijou SIDE STORY

Osomatsu-san Movie: Gekijou Koukai Kinen - Original Tanpen Gekijou
Mr. Osomatsu 3rd season 4

Mr. Osomatsu 3rd season
Atsumare! Minna no Contematsu-san! SIDE STORY

Atsumare! Minna no Contematsu-san!
Chocomatsu-san: Valentine's Day-hen SIDE STORY

Chocomatsu-san: Valentine's Day-hen
Chocomatsu-san: White Day-hen SIDE STORY

Chocomatsu-san: White Day-hen
Osomatsu-san 3 Short Episode Anime: Gekokujou SIDE STORY

Osomatsu-san 3 Short Episode Anime: Gekokujou
Osomatsu-san: Hipipo-Zoku to Kagayaku Kajitsu 5

Osomatsu-san: Hipipo-Zoku to Kagayaku Kajitsu
Osomatsu-san: Tamashii no Takoyaki Party to Densetsu no Otomari-kai 6

Osomatsu-san: Tamashii no Takoyaki Party to Densetsu no Otomari-kai
Mr. Osomatsu 4th season 7 ▶ HERE

Mr. Osomatsu 4th season
The Vampire Dies in No Time

The Vampire Dies in No Time
Pop Team Epic

Pop Team Epic
Daily Lives of High School Boys

Daily Lives of High School Boys
  1. OP1

    Osomatsu-san no Bomba Sheeeh!

    DA PUMP

    EP 1-
  2. ED1

    Buddy

    Hitomi from Atarayo, Matsuno-ke 6 Kyoudai

    EP 1-

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