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ONIMAI: I'm Now Your Sister! (manga)

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Alternative title:
Onii-chan wa Oshimai! (Japanese)
お兄ちゃんはおしまい! (Japanese)
Plot Summary: 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.
Vintage:
2017-02-25 (serialized on pixiv)
2019-04-27 (serialized in Comic REX, June 2019)
Release dates: We have 9
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Japanese staff
Japanese cast
Story & Art: Nekotofu
(none)
Japanese companies
Publisher: Ichijinsha
English staff
English cast
Translation: Devon Corwin

Editing: Sarah Tilson
(none)
English companies
Licensed by: Kodansha Comics

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