slice of life,middle school,based on manga,junior high school,school life,seinen,anime,gender swap,age change,middle school girls,japanese junior high schooler

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

Poster for 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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Cast & Crew

Director
  • Profile picture of Marika Kouno
    Mahiro Oyama (voice) Marika Kouno
  • Profile picture of Kaori Ishihara
    Mihari Oyama (voice) Kaori Ishihara
  • Profile picture of Hisako Kanemoto
    Kaede Hozuki (voice) Hisako Kanemoto
  • Profile picture of Minami Tsuda
    Momiji Hozuki (voice) Minami Tsuda
  • Profile picture of Kana Yuuki
    Asahi Ohka (voice) Kana Yuuki
  • Profile picture of Natsumi Hioka
    Miyo Murosaki (voice) Natsumi Hioka

Videos

Poster for Season 1

Season 1

2023

12 episodes

Season 1 of ONIMAI: I'm Now Your Sister! premiered on January 3, 2023

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Keywords

  • slice of life
  • middle school
  • based on manga
  • junior high school
  • school life
  • seinen
  • anime
  • gender swap
  • age change
  • middle school girls
  • japanese junior high schooler