
Mr. Osomatsu 4th season
おそ松さん 第4期
The sextuplets run amok for a fourth time, bringing new friends and new trouble to their chaotic adventures. Will they finally find stability or just more ways to get into trouble?
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. (Source: Crunchyroll)
Editorial mood guide by WatchMoodly Editorial Team · Base catalog metadata via AniList.
5.7/10 avg
Studio: PIERROT FILMS
Mood Rationale & Viewing Guide: Should You Watch Mr. Osomatsu 4th season?
Within our mood classification system, Mr. Osomatsu 4th season aligns strongest with a funny / happy / chill viewing mood (pure comedy to make you laugh until it hurts). Key tonal signals include heartwarming comedy, sci fi slice of life, must watch anime, underrated gem, new adventures, chaotic romp, making it a strong pick when you want a story driven by those themes without spoilers.
Watch If…
- •You want a comedy, sci-fi, slice of life anime series released in 2025 from PIERROT FILMS.
- •You enjoy themes centered on heartwarming comedy, sci fi slice of life, must watch anime, underrated gem.
- •You want a compact 13-episode run you can finish in a weekend (~24 min per episode).
Skip If…
- •You prefer high-intensity, gritty psychological thrillers over comedy and sci-fi storytelling.
- •You are looking for an ongoing, multi-season franchise rather than a completed release.
Official Trailer

Frequently Asked Questions About Mr. Osomatsu 4th season
Where can I watch Mr. Osomatsu 4th season (2025) legally online?
Mr. Osomatsu 4th season is available through official platforms including Hoopla, Pluto TV, Tubi, The Roku Channel, Crunchyroll, Prime Video, Apple TV+, Crunchyroll Premium (Via Prime) Amazon Channel, GRUV, Google Play Movies, Fandango At Home, TVING. Use the streaming links on this page to open the licensed release directly.
What mood and genres does Mr. Osomatsu 4th season fit best?
Mr. Osomatsu 4th season is classified under Comedy, Sci-Fi, Slice of Life and best matches a funny or happy or chill mood, featuring elements of heartwarming comedy, sci fi slice of life, must watch anime, underrated gem, new adventures.
How many episodes does Mr. Osomatsu 4th season have?
Mr. Osomatsu 4th season (2025) is currently marked as completed with 13 episodes, averaging 24 minutes per episode.
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