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.
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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.
Cast
Marika Kouno, Kaori Ishihara, Hisako Kanemoto, Minami Tsuda, Kana Yuuki, Natsumi Hioka
ONIMAI: I'm Now Your Sister! is streaming on Crunchyroll. ONIMAI: I'm Now Your Sister! is streaming on Crunchyroll Amazon Channel. Buy ONIMAI: I'm Now Your Sister! on Amazon Prime. Availability last verified February 23, 2026.
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