1 Season
12 Episode
ONIMAI: I'm Now Your Sister! - Season 1
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.
- Year: 2023
- Country: Japan
- Genre: Animation, Comedy
- Studio: AT-X
- Keyword: slice of life, middle school, based on manga, junior high school, school life, seinen, anime, gender swap, age change, middle school girls
- Director:
- Cast: Marika Kouno, Kaori Ishihara, Hisako Kanemoto, Minami Tsuda, Kana Yuuki, Natsumi Hioka