Osomatsu-san 4th Season (Mr. Osomatsu 4th season) é um anime no formato série de TV que estreou em verão (julho) de 2025, produzido pelo estúdio PIERROT FILMS.

Sobre a produção: a história vem de um mangá, são 13 episódios de cerca de 24 minutos e o status atual é "finalizado".

Os gêneros principais são comédia, ficção científica e cotidiano, com temas como Twins, Surreal Comedy, Episodic e Aliens.

No AniList, Osomatsu-san 4th Season tem nota média de 59%, uma nota mediana, e está na lista de 2.421 usuários.

A franquia tem continuação ou história anterior: Osomatsu-san 3rd Season.

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. (Source: Crunchyroll) 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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