ONIMAI: I'm Now Your Sister!
Onii-chan wa Oshimai!
Onii-chan is Done For! · Onii-chan ha Oshimai! · Onii-chan is Done For · Ab sofort Schwester!
Nekotoufu
Ongoing
Manga
77/100
Jun 27, 2018 — Present
Gender BendingCute Girls Doing Cute ThingsPrimarily Female CastHikikomoriRehabilitationLGBTQ+ ThemesBisexualAppearance Different from Actual AgeGender TransformationMale to FemaleIyashikeiAge Regression
CharactersMahiro OyamaMihari Oyama
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 …
