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.
| Title | ONIMAI: I'm Now Your Sister! |
|---|---|
| Subtitle Available |
 ETC.
|
| Alternative Titles | 别当哥哥了！, 不当哥哥了！, 别当欧尼酱了！, ¡Ahora soy tu hermana!, ओनिमाई: मैं अब तुम्हारी बहन हूँ!, Onii-chan wa Oshimai!, Onimai, Onii-chan ha Oshimai!, Oniichan ha Oshimai!, Oniichan wa Oshimai!, お兄ちゃんはおしまい！, 오빠끝, Onii-chan Is Done For!, Older Brother Is Done For! |
| First Air Date | 2023-01-05 |
| Last Air Date | 2023-03-23 |
| Number of Episodes | 12 |
| Number of Seasons | 1 |
| Genres | Animation, Comedy, |
| Networks | AT-X, |
| Casts | Marika Kouno, Kaori Ishihara, Hisako Kanemoto, Minami Tsuda, Kana Yuuki, Natsumi Hioka |
| Plot Keywords | , |
Mahiro Oyama (voice)
Marika Kouno
Mihari Oyama (voice)
Kaori Ishihara
Kaede Hozuki (voice)
Hisako Kanemoto
Momiji Hozuki (voice)
Minami Tsuda
Asahi Ohka (voice)
Kana Yuuki
Miyo Murosaki (voice)
Natsumi Hioka
