Quick Answer
No confirmed platforms for Mr. Osomatsu-san the Movie: Prologue Theater right now. Search Crunchyroll, Netflix, and Amazon Prime below to check your region. The show is 6 episodes (~2h watch time).
Where to Watch Mr. Osomatsu-san the Movie: Prologue Theater
We don't have confirmed streaming data for Mr. Osomatsu-san the Movie: Prologue Theater right now, but it's likely available on one of the major platforms below. Hit the search links to check your region.
Search Streaming Platforms
Anime licensing changes by region. If Mr. Osomatsu-san the Movie: Prologue Theaterisn't on your usual service, try these.
About Mr. Osomatsu-san the Movie: Prologue Theater
Osomatsu-san Movie shorts shown weekly in theaters and later included in DVD/BD release. In them the boys break the fourth wall worrying about their own film being released.
Full details on MyAnimePulseFrequently Asked Questions
Where can I watch Mr. Osomatsu-san the Movie: Prologue Theater legally?
We don't have confirmed platform data for Mr. Osomatsu-san the Movie: Prologue Theater at the moment, but Crunchyroll, Netflix, and Amazon Prime are the most common homes for anime. Use the search links above to check what's available in your area.
Is Mr. Osomatsu-san the Movie: Prologue Theater on Netflix or Crunchyroll?
Can't confirm either right now. Both platforms rotate their catalogs pretty often, so it's worth searching directly on each one.
Is Mr. Osomatsu-san the Movie: Prologue Theater available with an English dub?
Dub availability depends on the platform. Crunchyroll has been expanding their dubbed library a lot recently, and Funimation (now merged into Crunchyroll) historically had the biggest dub catalog. Check each platform's listing for Mr. Osomatsu-san the Movie: Prologue Theater.
Can I watch Mr. Osomatsu-san the Movie: Prologue Theater for free?
Crunchyroll offers a free ad-supported tier for some shows. Most other platforms require a subscription, but many offer free trials for new users. Tubi and Pluto TV occasionally have anime in their free rotation too.