Quick Answer
Judo Boy is streaming on HiDive. 26 episodes (~10h total watch time). Availability may vary by region.
Where to Watch Judo Boy
Judo Boy is currently on HiDive. Keep in mind that catalogs change by region — if you don't see it on your usual service, check the other platforms listed here.
Confirmed Streaming Platforms
Subscription availability by JustWatch
Check Other Platforms
Anime licensing changes by region. If Judo Boyisn't on your usual service, try these.
About Judo Boy
Young Sanshiro Kurenai is the proud heir of a judo dojo. One day, he finds his beloved father dead and a glass eye not too far from the corpse. Ready to avenge his father and take his honour back, Sanshiro and his friend Ken start searching for the mysterious one-eyed murderer... (Source: ANN)
Full details on MyAnimePulseFrequently Asked Questions
Where can I watch Judo Boy legally?
Right now, Judo Boy is on HiDive. That said, anime licensing varies a lot by country — what's on Netflix in Japan might not be on Netflix in the US. If your go-to platform doesn't have it, try the other services listed above.
Is Judo Boy 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 Judo Boy 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 Judo Boy.
Can I watch Judo Boy 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.