TV series
ONIMAI: I'm Now Your Sister!
2023, Japanese, on AT-X.
When lazy, erotic-game loving Mahiro Oyama is transformed into a girl by his younger scientist sister's experiments, he becomes determined to change back, only to recognize that with his new opportunity, he may want to turn his life around.
- Seasons
- 1
- Episodes
- 12
- Episode length
- 24 min
- Status
- Ended in 2023
Worth the Hype
Clear your evening for this.
7.4/10 from 72 TMDB viewer ratings.
Seen it? Give your verdict.
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Where to watch ONIMAI: I'm Now Your Sister!
ONIMAI: I'm Now Your Sister! is streaming on Crunchyroll in India.
Crunchyroll
Crunchyroll Amazon ChannelBuy
Amazon VideoAvailability in India as of 12 November 2026. Streaming data by JustWatch.
Latest episode
S1 E12: Mahiro's Future as a Sister
Aired 23 March 2023
Seasons 1
Cast & crew
- Marika KounoMahiro Oyama (voice) · 12 ep
- Kaori IshiharaMihari Oyama (voice) · 12 ep
- Hisako KanemotoKaede Hozuki (voice) · 12 ep
- Minami TsudaMomiji Hozuki (voice) · 12 ep
- Kana YuukiAsahi Ohka (voice) · 12 ep
- Natsumi HiokaMiyo Murosaki (voice) · 12 ep
- Yoshie SaitoTomoya Kiba (voice) · 5 ep
- Misaki WatadaMinori Shiina (voice) · 4 ep
- Miyuu TakatsukiSatsuki Takada (voice) · 4 ep
- Rena AoshimaYuta Sakurada (voice) · 4 ep
- Rika AbeMinato Senkawa (voice) · 4 ep
- Emiri SuyamaWoman B (voice) · 3 ep
Details
- First aired
- 5 January 2023
- Last aired
- 23 March 2023
- Network
- AT-X
- Original title
- お兄ちゃんはおしまい！
- Language
- Japanese
- Country
- Japan
- Type
- Scripted
- Rated
- TV-14
Check ratings elsewhere
News & fan talk
What ONIMAI: I'm Now Your Sister! is based on
ONIMAI: I'm Now Your Sister! is based on Onimai, a 2018 manga series by Nekotofu.
Manga series · 2018
Onimai
By Nekotofu
Source details from Wikidata and TMDB.
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ONIMAI: I'm Now Your Sister!: quick answers
Is ONIMAI: I'm Now Your Sister! worth watching?
Our verdict is Worth the Hype: Clear your evening for this. It scores 7.4/10 from 72 TMDB viewer ratings.
How many seasons of ONIMAI: I'm Now Your Sister! are there?
ONIMAI: I'm Now Your Sister! has 1 season and 12 episodes, about 24 minutes each.
Is ONIMAI: I'm Now Your Sister! finished?
Yes. ONIMAI: I'm Now Your Sister! ended in 2023, so you can watch the whole story.
Which OTT platform is ONIMAI: I'm Now Your Sister! on?
ONIMAI: I'm Now Your Sister! is streaming on Crunchyroll in India. (Checked 12 November 2026.)
ONIMAI: I'm Now Your Sister! parents guide: is it suitable for kids?
ONIMAI: I'm Now Your Sister! is rated TV-14. Check the rating guidance before watching with young children.
What shows are like ONIMAI: I'm Now Your Sister!?
If you liked ONIMAI: I'm Now Your Sister!, try The Dangers in My Heart, School Rumble, Daily Lives of High School Boys.
What is ONIMAI: I'm Now Your Sister! based on?
ONIMAI: I'm Now Your Sister! is based on Onimai, a 2018 manga series by Nekotofu.