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ONIMAI: I'm Now Your Sister!

Available in United States

ONIMAI: I'm Now Your Sister! (2023)

Where can I watch ONIMAI: I'm Now Your Sister! in United States?

As of 2026-09-11, in United States: ONIMAI: I'm Now Your Sister! streams on Crunchyroll, Crunchyroll Amazon Channel; rent or buy on Amazon Video.

TV-14 · 2023 · Ended · 1 season · 12 episodes · 24m

TMDB 7.4 · 66 votes

When lazy, erotic-game loving Mahiro Oyama is transformed into a girl by his younger scientist sister's experiments, he becomes determined to change back, only to recognize that with his new opportunity, he may want to turn his life around.

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Availability by country

Streaming in 5 of 6 tracked countries as of 2026-09-11.

CountryLicensed apps
IndiaNot listed
United StatesAmazon Video, Crunchyroll, Crunchyroll Amazon Channel
United KingdomCrunchyroll, Crunchyroll Amazon Channel
JapanAmazon Prime Video, Amazon Video, U-NEXT, Hulu, Anime Times Amazon Channel, dAnime Amazon Channel
GermanyAniverse Amazon Channel, Akibapass
BrazilCrunchyroll, Crunchyroll Amazon Channel

Series Cast

Current Season

Season 1

59% · 2023 · 12 Episodes

Mahiro's Future as a Sister (1x12, 23 March 2023)

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When lazy, erotic-game loving Mahiro Oyama is transformed into a girl by his younger scientist sister's experiments, he becomes determined to change back, only to recognize that with his new opportunity, he may want to turn his life around.

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FAQ

Did ONIMAI: I'm Now Your Sister! just arrive on Crunchyroll Amazon Channel in United States?
Yes — as of 2026-09-11, ONIMAI: I'm Now Your Sister! was newly listed on Crunchyroll Amazon Channel in United States. Tap Watch to open the official app.
Where can I watch ONIMAI: I'm Now Your Sister! in United States?
As of 2026-09-11, in United States: ONIMAI: I'm Now Your Sister! streams on Crunchyroll, Crunchyroll Amazon Channel; rent or buy on Amazon Video.
Where can I watch ONIMAI: I'm Now Your Sister! in India?
ONIMAI: I'm Now Your Sister! is not on tracked licensed apps in India right now.
Where can I watch ONIMAI: I'm Now Your Sister! in United Kingdom?
Licensed apps in United Kingdom: Crunchyroll, Crunchyroll Amazon Channel.
Where can I watch ONIMAI: I'm Now Your Sister! in Japan?
Licensed apps in Japan: Amazon Prime Video, Amazon Video, U-NEXT, Hulu, Anime Times Amazon Channel, dAnime Amazon Channel.
Where can I watch ONIMAI: I'm Now Your Sister! in Germany?
Licensed apps in Germany: Aniverse Amazon Channel, Akibapass.
Where can I watch ONIMAI: I'm Now Your Sister! in Brazil?
Licensed apps in Brazil: Crunchyroll, Crunchyroll Amazon Channel.
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