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

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.

ONIMAI: I'm Now Your Sister! is a 2023 animation and comedy TV series starring Marika Kouno, Kaori Ishihara and Hisako Kanemoto. The series has 1 season and 12 episodes. Viewers rate it 7.4/10 on TMDB based on 72 votes.

  • First aired: 2023-01-05
  • Seasons: 1
  • Episodes: 12
  • Status: Ended
  • Genres: Animation, Comedy
  • TMDB rating: 7.4/10

ONIMAI: I'm Now Your Sister! cast

Marika Kouno, Kaori Ishihara, Hisako Kanemoto, Minami Tsuda, Kana Yuuki, Natsumi Hioka

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