ONIMAI: I'm Now Your Sister! (2023): Where to Watch, Cast & Facts
An evergreen, sourced guide to ONIMAI: I'm Now Your Sister!: streaming options, cast and core facts.

ONIMAI: I'm Now Your Sister! (2023) — an evergreen reference for this TV series: the essentials, the cast, where to watch and what to watch next.
Where to watch
TMDB's U.S. watch-provider data lists Crunchyroll, Crunchyroll Amazon Channel. Availability changes by country and date, so check your streaming app before watching.
Cast
Marika Kouno as Mahiro Oyama (voice); Kaori Ishihara as Mihari Oyama (voice); Hisako Kanemoto as Kaede Hozuki (voice); Minami Tsuda as Momiji Hozuki (voice); Kana Yuuki as Asahi Ohka (voice); Natsumi Hioka as Miyo Murosaki (voice)
About ONIMAI: I'm Now Your Sister!
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.
More like ONIMAI: I'm Now Your Sister!
- School Rumble
- Daily Lives of High School Boys
- The Disappearance of Nagato Yuki-chan
- Shikimori's Not Just a Cutie
- Non Non Biyori
- Wasteful Days of High School Girls
- Alya Sometimes Hides Her Feelings in Russian
- Miru Tights
Figures and availability come from public TMDB data and are provided as a sourced reference.
Frequently asked questions
Where can I watch ONIMAI: I'm Now Your Sister!?
TMDB's U.S. watch-provider data lists Crunchyroll, Crunchyroll Amazon Channel. Availability changes by country and date, so check your streaming app before watching.
Who is in the cast of ONIMAI: I'm Now Your Sister!?
Marika Kouno as Mahiro Oyama (voice); Kaori Ishihara as Mihari Oyama (voice); Hisako Kanemoto as Kaede Hozuki (voice); Minami Tsuda as Momiji Hozuki (voice); Kana Yuuki as Asahi Ohka (voice); Natsumi Hioka as Miyo Murosaki (voice)
Is this ONIMAI: I'm Now Your Sister! guide official?
No. It uses TMDB data as a reference and is not endorsed or certified by TMDB.



