Oniichan wa Oshimai!

Oniichan wa Oshimai!

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Seasons and episodes

1Season 1 Jul. 21, 2024




Video trailer


Other name: Onimai: I’m Now Your Sister!, Onii-chan is Done For; お兄ちゃんはおしまい!

Description: 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!

Original title Oniichan wa Oshimai!

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