“Reclusive brother turned into a girl by sister's experimental drug, forced to live as a cute female.”
Onimai: I'm Now Your Sister!
お兄ちゃんはおしまい!
Would You Love or Hate This?
AI-powered analysis tailored to your taste
Based on your preference for character-driven stories with layered emotional arcs, this title's exploration of identity and belonging would deeply resonate. The pacing mirrors series you've rated highly, and its thematic depth aligns with your appreciation for nuanced storytelling...
However, the slow initial episodes might test your patience given your history of dropping shows that don't hook you early. The art style shift in the middle arc could also be a concern...
Synopsis
Reclusive brother turned into a girl by sister's experimental drug, forced to live as a cute female.
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.
What people say
Community consensus
Derived from 85 sampled reviews
What 85 viewers settled on.
Polarized
σ 2.12 · split reception
5.3 pts
Recommenders 8.6 · others 3.3
↑ 0.74
Running avg · Jan 2023 → Mar 2026
- 7 “This Series does not adapt all the chapters and it adapts them in an odd order. This anime is fun and good but like horimiya just read the manga and get a fuller picture. if you see this review...”
- 8 “imo when i watch the trailer for the anime i would think "ah shit a gender bender ass anime" but after watching it, it actually wholesome even though the anime contain ecchi moment and so call "fan...”
- 10 “At first this anime was not that good to me but after i reach around like episode 3. It started to became really good. Recently i have been watching a really sad anime and this show literally saved...”
Watch Order & Related
Explore the Onimai: I'm Now Your Sister! universe
Cast
See all →Trailers & videos
See all →Gallery
See all →If you stay for this, you'll stay for these
See all →The community pairs this with
See all →Made by
See all credits →Production slate
- Format 12 × 23′ eps × min
- Total runtime 4h 36m all episodes
- Aired Jan 2023 – Mar 2023 Winter 2023
- Source Tv media type
- Rated PG 13 - Teens 13 or older
- Ref. BS-22014 catalog
Produced by
- Pony Canyon Producer
- Movic Producer
- AT-X Producer
- TOHO animation Producer
- Tokyo MX Producer
- Hakuhodo DY Music & Pictures Producer
- BS11 Producer
- Egg Firm Producer
- Ichijinsha Producer
- Bit grooove promotion Producer
- Pia Producer
- Toho Music Producer