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Onii-chan wa Oshimai

2017
77.78% Community Approval

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)

Rank #1112 (Most Popular Manga) Rank #1838 (Highest Rated Manga)
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Manga Details
  • English Onimai: I'm Now Your Sister!
  • Japanese お兄ちゃんはおしまい
  • Japanese (Romaji) Onii-chan wa Oshimai
  • Synonyms Onii-chan is Done For
  • Type Manga
  • Status Publishing
  • Published May 6, 2017
  • More info