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Onii-chan wa Oshimai!
Year2017
StatusONGOING
AudienceSEINEN
AuthorNekotoufu
ArtistNekotoufu
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! *5th place of Tsugi Manga Awards, Category Webmanga - **Retail:** (Direct Retail From the Mangaka)  Official Melon Books  Official Toranoana  Official DLSite (jp)
Reading status & chaptersCatalogue
No volume
Volume 10
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