Cover image of ONIMAI: I'm Now Your Sister!
Poster of ONIMAI: I'm Now Your Sister!

ONIMAI: I'm Now Your Sister!

Self-professed "home security guard" Mahiro Oyama has not left his home in years, secluding himself in his room playing erotic visual novels. This depraved lifestyle causes his prodigious sister, Mihari, to worry about his well-being. In hopes of solving this problem, she devises a plan to rehabilitate him back to normalcy.   The first part of Mihari's plan is to concoct a medicine that changes her brother's biological constitution into a bona fide female, much to Mahiro's vehement dismay. Stuck in this predicament, Mahiro has no choice but to live out his life as a cute girl until the effect wears off—if it ever does.

English: ONIMAI: I'm Now Your Sister!

Synonyms: Oniichan wa Oshimai!; お兄ちゃんはおしまい!; Onii-chan is Done For!

Type: TV

Status: Finished Airing

Aired: Jan 5, 2023 to Mar 23, 2023

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Videos (25)
ONIMAI: I'm Now Your Sister! 12 [Uncensored]
ONIMAI: I'm Now Your Sister! 11 [Uncensored]
ONIMAI: I'm Now Your Sister! 10 [Uncensored]
ONIMAI: I'm Now Your Sister! 9 [Uncensored]
ONIMAI: I'm Now Your Sister! 8 [Uncensored]
ONIMAI: I'm Now Your Sister! 7 [Uncensored]
ONIMAI: I'm Now Your Sister! 6 [Uncensored]
ONIMAI: I'm Now Your Sister! 5 [Uncensored]
ONIMAI: I'm Now Your Sister! 4 [Uncensored]
ONIMAI: I'm Now Your Sister! 3 [Uncensored]
ONIMAI: I'm Now Your Sister! 2 [Uncensored]
ONIMAI: I'm Now Your Sister! 1 [Uncensored]
ONIMAI: I'm Now Your Sister! _Trailer
ONIMAI: I'm Now Your Sister! _012
ONIMAI: I'm Now Your Sister! _011
ONIMAI: I'm Now Your Sister! _010
ONIMAI: I'm Now Your Sister! _009
ONIMAI: I'm Now Your Sister! _008
ONIMAI: I'm Now Your Sister! _007
ONIMAI: I'm Now Your Sister! _006
ONIMAI: I'm Now Your Sister! _005
ONIMAI: I'm Now Your Sister! _004
ONIMAI: I'm Now Your Sister! _003
ONIMAI: I'm Now Your Sister! _002
ONIMAI: I'm Now Your Sister! _001