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Marika KounoMahiro Oyama (voice)
ONIMAI: I'm Now Your Sister!
★ 7.5/10 · 65 votesWhen 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.
- Director of Photography
- Akane Fushihara
- Original Music Composer
- Alisa Okehazama
- Executive Producer
- Asuka Yamazaki
- Executive Producer
- Atsushi Takahashi
Where to Watch (Legal)
Availability may vary by region and can change over time.
Top Cast
Kaori IshiharaMihari Oyama (voice)
Hisako KanemotoKaede Hozuki (voice)
Minami TsudaMomiji Hozuki (voice)
Kana YuukiAsahi Ohka (voice)
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Accuracy matters.Last updated Aug 26, 2026. Found an error?Request a correction