ONIMAI: I'm Now Your Sister! (2023) is a Animation, Comedy series that follows 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. Currently, you can watch ONIMAI: I'm Now Your Sister! on Crunchyroll, Crunchyroll Amazon Channel, Amazon Video. Streaming availability may vary by country and platform over time. It has a user rating of 7.4 out of 10 from 55 votes. Fans of animation series may also want to explore similar titles below.