ONIMAI: I'm Now Your Sister!
Series Overview
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.
Broadcast Schedule & Network Information
Airing status, episode counts, upcoming schedule, and network syndication.
1 Season • 12 Episodes
24 min per episode
2023 – 2023
Premiered: Thu, Jan 5, 2023
Creative Production Team
Latest Aired Episode
Season 1, Episode 12: “Mahiro's Future as a Sister”
Mahiro and the girls take a trip to a Japanese inn over spring break. First they hit the town in their yukata, before heading to the open-air bath to detox. However, things go south when Mahiro begins to feel a familar tingling sensation between his legs.
Seasons & Episodes Breakdown
Trailers, Teasers & Extra Featurettes
Official promotional previews, behind-the-scenes footage, and exclusive clips.
Promotional Video [Subtitled]Official
Type: Trailer • Published 2023-01-03
Cast & Creators
Explore Star Directory →
Creative Leadership & Key Crew
Shingo Fujii
Michiko Yokote
Daisuke Achiwa, Alisa Okehazama
Akane Fushihara
Yuji Oka
Asuka Yamazaki, Atsushi Takahashi, Takuro Hatakeyama, Nobuhiro Osawa, Katsuyuki Imai
Department Leadership Roster
Daisuke Achiwa
Original Music Composer
Alisa Okehazama
Original Music Composer
Yuji Oka
Editor
Akane Fushihara
Director of Photography
Takuro Hatakeyama
Producer
Mitsuteru Hishiyama
Producer
Age Classification & Content Advisories
Official viewer rating standards and content warnings across international classification boards.
TV-14: Parents Strongly Cautioned — Contains material unsuitable for children under 14.
International Certification Matrix
Parents Strongly Cautioned — Contains material unsuitable for children under 14.
Interdit aux moins de 12 ans — 12+ only.
FSK 16 — Restricted to viewers aged 16 and older.
14+ Parents Strongly Cautioned.
Mature — Recommended for viewers 15 and older.
Production Stills & Gallery
Official cinematic photography and background stills for ONIMAI: I'm Now Your Sister!.
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Frequently Asked Questions About ONIMAI: I'm Now Your Sister!
Key facts, seasons breakdown, and credits for search engines and AI assistants.
What is ONIMAI: I'm Now Your Sister! about?
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.
How many seasons does ONIMAI: I'm Now Your Sister! have?
ONIMAI: I'm Now Your Sister! comprises 1 season available to explore.
Who stars in ONIMAI: I'm Now Your Sister!?
Key cast members in ONIMAI: I'm Now Your Sister! include Marika Kouno, Kaori Ishihara, Hisako Kanemoto, Minami Tsuda, Kana Yuuki.
Who created or directed ONIMAI: I'm Now Your Sister!?
ONIMAI: I'm Now Your Sister! was developed and directed by Shingo Fujii.