Original
07/09/2025 - 09/24/2025 Finished
Osomatsu-san 4th Season (おそ松さん 第4期)
Also known as: Mr. Osomatsu 4th Season
Fourth season of Osomatsu-san.
1
Total episodes
1
Canon episodes
0
Filler episodes
0%
% Filler
Canon episodes · 1 Filler episodes · 0
Every season
Seasons and sequels
You may wonder, how many seasons does Osomatsu-san 4th Season have? Well, currently Osomatsu-san 4th Season has a total of 5 official seasons. Below is a complete list of the anime's seasons, arranged chronologically, including prequels, sequels, and canonical spin-offs.
Discover all seasons and episodes of this anime in broadcast order. Each season develops a key part of the story, introducing new characters, story arcs, and important events. Select any season to view detailed information such as the number of episodes, release dates, and a complete plot description.
Original
Secuela
Secuela
Secuela
SecuelaWhat to watch, what to skip
Watch order: filler vs canon
You're in luck! Osomatsu-san 4th Season doesn't have a single filler episode: all 1 episodes are canon. It's a faithful adaptation of the original manga, so you can enjoy it from first to last without skipping anything or checking any list of expendable episodes.
In short, the watch order for Osomatsu-san 4th Season is as simple as it gets: start at episode 1 and keep going to episode 1 without detours. If you came looking for which Osomatsu-san 4th Season episodes are filler so you could skip them, the answer is that there aren't any.
Episode by episode
Complete guide by season
1 Episodes
| # | Episodes | Aired | Type |
|---|---|---|---|
| 1 | It's Starting Again— | — | Canon |
Verified legal platforms
Where to watch Osomatsu-san 4th Season
All the platforms where you can watch Osomatsu-san 4th Season legally, with direct links to each service.
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Anime similar to Osomatsu-san 4th Season
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We've selected these series because they share characteristics with Osomatsu-san 4th Season: similar themes, comparable animation style and the same target audience. Each guide includes the complete list of seasons, filler episodes you can skip and the best platforms to watch each anime in your region.
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Looking for more anime like Osomatsu-san 4th Season? Explore our complete anime guides catalog or filter by the Comedia genre to find more similar series.
Common questions
Frequently asked questions
How many seasons does Osomatsu-san 4th Season have?
Osomatsu-san 4th Season has a total of 5 seasons. The series is completed. Each season is divided into multiple episodes with stories that advance the main plot of the anime.
How many episodes does Osomatsu-san 4th Season have?
In total, Osomatsu-san 4th Season has 1 episodes distributed across its 5 seasons. You can consult the complete episodes table to see the breakdown by season.
What is the best order to watch Osomatsu-san 4th Season?
It is recommended to watch Osomatsu-san 4th Season in chronological broadcast order. This means starting from season 1 and continuing sequentially to the last season. Check our watch order guide which includes information about filler vs canon episodes for an optimal experience.
Where can I watch Osomatsu-san 4th Season online?
Osomatsu-san 4th Season is available on the following streaming platforms: Crunchyroll. Check the platforms section at the top of this page to access where you can watch the anime. Please note that availability may vary depending on your geographic region.
Watch on:
Is Osomatsu-san 4th Season a complete anime?
Yes, Osomatsu-san 4th Season is a completed anime. All seasons have already aired and you can enjoy the series in its entirety without waiting for new episodes.
How much filler does Osomatsu-san 4th Season have?
No, Osomatsu-san 4th Season does not have filler episodes. All its episodes are canon and faithfully follow the original manga story, so you can watch all episodes without worrying about skipping anything.
Where can I see Osomatsu-san 4th Season's score and reviews on MyAnimeList?
You can check the score, reviews, characters and statistics for Osomatsu-san 4th Season directly on MyAnimeList, the world's largest anime database. There you'll find the community rating, global ranking and opinions from other fans.