Quick Answer
Oneechan ga Kita is streaming on Crunchyroll. 12 episodes (~5h total watch time). Availability may vary by region.
Where to Watch Oneechan ga Kita
Oneechan ga Kita is currently on Crunchyroll. 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 Oneechan ga Kitaisn't on your usual service, try these.
About Oneechan ga Kita
The story revolves around Tomoya Mizuhara, a 13-year-old boy who suddenly gains a big sister when his father remarries. 17-year-old Ichika is a little strange, and her affection for Tomoya is rather overwhelming, if not scary. On top of things, Ichika's friend Ruri is the ultimate sadist. Then there is Ichika's big-breasted quarter-Japanese friend Marina. (Source: ANN)
Full details on MyAnimePulseFrequently Asked Questions
Where can I watch Oneechan ga Kita legally?
Right now, Oneechan ga Kita is on Crunchyroll. 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 Oneechan ga Kita on Netflix or Crunchyroll?
It's confirmed on Crunchyroll. Netflix availability depends on your region — some countries have it, others don't.
Is Oneechan ga Kita 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 Oneechan ga Kita.
Can I watch Oneechan ga Kita 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.