ONIMAI: I'm Now Your Sister! Facts, FAQ & Common Questions
2023 · AT-X · Status: Ended · Rated: TV-14
Frequently Asked Questions About ONIMAI: I'm Now Your Sister!
Direct, verified answers to the most common queries regarding episodes, renewals, watch order, and streaming availability.
How many seasons and episodes does ONIMAI: I'm Now Your Sister! have?
ONIMAI: I'm Now Your Sister! has 1 season and 12 total episodes, spanning from its premiere on January 5, 2023 to March 23, 2023.
Is ONIMAI: I'm Now Your Sister! renewed, ended, or canceled?
ONIMAI: I'm Now Your Sister! has concluded its run and is officially ended.
How long does it take to binge watch ONIMAI: I'm Now Your Sister!?
It takes 4h 36m (276 minutes) to watch the complete run of ONIMAI: I'm Now Your Sister!. At a standard pace of 2 hours per day, you will finish the entire series in approximately 3 days. Yes! At 4.6 hours total, you can comfortably finish this in a single weekend with about 2.3 hours per day.
What is the highest-rated episode of ONIMAI: I'm Now Your Sister!?
The highest-rated episode is Season 1, Episode 1 ("Mahiro's Confusing New Body"), which holds an outstanding rating of 7.3/10 based on 6 audience ratings.
Where can you stream or watch ONIMAI: I'm Now Your Sister!?
ONIMAI: I'm Now Your Sister! is available for streaming on Crunchyroll, Crunchyroll Amazon Channel. Availability may vary by regional territory, subscription tier, and digital purchase availability.
What is the official age rating for ONIMAI: I'm Now Your Sister!?
ONIMAI: I'm Now Your Sister! has an official content rating of TV-14.
Who are the lead actors in ONIMAI: I'm Now Your Sister!?
The primary ensemble cast includes Marika Kouno as Mahiro Oyama (voice) (age 32), Kaori Ishihara as Mihari Oyama (voice) (age 33), Hisako Kanemoto as Kaede Hozuki (voice) (age 38), Minami Tsuda as Momiji Hozuki (voice) (age 37).
Ensemble Cast & Current Ages
Lead cast members, their character identities, and current ages calculated from official biographical records:
| Actor | Character | Current Age |
|---|---|---|
| Marika Kouno | Mahiro Oyama (voice) | 32 |
| Kaori Ishihara | Mihari Oyama (voice) | 33 |
| Hisako Kanemoto | Kaede Hozuki (voice) | 38 |
| Minami Tsuda | Momiji Hozuki (voice) | 37 |
| Kana Yuuki | Asahi Ohka (voice) | 39 |
| Natsumi Hioka | Miyo Murosaki (voice) | 35 |
| Yoshie Saito | Tomoya Kiba (voice) | – |
| Misaki Watada | Minori Shiina (voice) | – |
Editorial Verification & Sources
All production facts, air dates, cast credentials, and streaming metadata for ONIMAI: I'm Now Your Sister! are compiled from official broadcaster archives, TMDB, and Wikidata records. Last verified on September 25, 2026.