Japan Synopsis
お兄ちゃんはおしまい！
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.
Audience Engagement
20 audience reviews — more than 36% of Japan seriess in our index.
Popularity (91th percentile) outruns review volume (36th) — a trending, discussed title among Japan seriess.
Also On AT-X
Other series that aired on AT-X.
Animation + Comedy in Japan
973 Japan titles in our catalog blend the Animation and Comedy genres. Below: the top-rated of them (excluding ONIMAI: I'm Now Your Sister! itself).
The 2022–2024 Japan Window
ONIMAI: I'm Now Your Sister! holds position #88 of 219 Japan seriess in the 2022–2024 window, below highlighted by audience rating.
The 2020s Japan Landscape
Catalog density by release year across the 2020s in Japan, 539 titles in total. Highlighted year (yellow) is when ONIMAI: I'm Now Your Sister! premiered alongside 86 others.
Position in Catalog
Released alongside 86 other Japan seriess in 2023.
The 4495th Japan title from Japan we index (earliest catalogued entry: 1899).
Our Japan catalog contains 4,579 titles in total (1,671 seriess).
Broadcast Timeline
Reception Benchmarks
Ranked #1,287 of 4,579 Japan seriess indexed here (72nd percentile by TMDB audience score).
Rating is +0.6 points above the Japan average of 6.9/10.
Among Japan Animation productions specifically: #988 of 2,532 (top 39%).
Production Details
| Primary Country | Japan |
|---|---|
| Original Language | Japanese |
| Production Companies | Studio Bind, EGG FIRM, Ichijinsha, TOHO, Hakuhodo DY Music & Pictures |
| Series Type | Scripted |
| Seasons / Episodes | 1 / 12 |
| Release Date | January 5, 2023 |
| Official Site | onimai.jp |
Questions Answered
When did ONIMAI: I'm Now Your Sister! end?
ONIMAI: I'm Now Your Sister! finished its run with its final episode airing on March 23, 2023.
Where did ONIMAI: I'm Now Your Sister! air?
ONIMAI: I'm Now Your Sister! aired on AT-X, which has broadcast 8+ other Asian series indexed in this catalog.