Mahiro Oyama was just a normal erotic-game loving dude…until he woke up one morning as a woman! Turns out his mad-scientist little sister, Mihari, tried out one of her new experiments on him…with a disastrous outcome, as far as Mahiro’s concerned! But Mihari is as determined to study him as he is determined to go back to his shut-in, game-playing life, and one thing’s for sure…life is going to get a whole lot weirder from here on out! (Source: Kodansha USA)
Genres: Comedy, Ecchi, Slice of Life
Watch ONIMAI: I'm Now Your Sister! episode 1 online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.
Gender Bending · Primarily Female Cast · Rehabilitation · Cute Girls Doing Cute Things · Age Regression · Female Protagonist · Primarily Teen Cast · Coming of Age · Hikikomori · Family Life · Otaku Culture · School