| Score | 7.11 |
| Alt: | Oniichan wa Oshimai!, お兄ちゃんはおしまい！ |
| Rating: | PG-13 – Teens 13 or older |
| Year: | 2023 |
| Status: | Completed |
| More Info: | MAL | SIMKL |
| Genres: | Comedy School |
Onimai: I’m Now Your Sister! wcoforever
WCOForever providing Technoroid: Overmind Self-confessed “home security guard” Mahiro Oyama hasn’t been away from his home for a long time while he is confined in his room, reading erotic graphic novels. His depraved life style has his exuberant daughter, Mihari worried about their health. In the hope of resolving this issue, she formulates the plan to bring his life back to normal.
The first phase of Mihari’s strategy is to formulate an ingredient that alters the biological constitution of her brother into real female which is astonished Mahiro. In this situation, Mahiro has no choice other than to live her life in the form of charming girl until the effects wear off, if it ever occurs.
