Quick Answer
One and Three Four is streaming on Amazon Prime Video. 1 episodes. Availability may vary by region.
Where to Watch One and Three Four
One and Three Four is currently on Amazon Prime Video. 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 One and Three Fourisn't on your usual service, try these.
About One and Three Four
A music video for Yoshiharu Abe's song "One and Three Four."
Full details on MyAnimePulseFrequently Asked Questions
Where can I watch One and Three Four legally?
Right now, One and Three Four is on Amazon Prime Video. 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 One and Three Four 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 One and Three Four 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 One and Three Four.
Can I watch One and Three Four 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.