ONIMAI: I'm Now Your Sister!
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.
Where to Stream
Stream in 66 countries
Sorted by distance from 
United States
US United States
MX Mexico
BS Bahamas
CA Canada
HN Honduras
TC Turks and Caicos Islands
CO Colombia
VE Venezuela
TT Trinidad and TobagoShowing 10 of 66 countries.
Cast, directors & writers
Marika Kouno
Mahiro Oyama (voice)
Kaori Ishihara
Mihari Oyama (voice)
Hisako Kanemoto
Kaede Hozuki (voice)
Minami Tsuda
Momiji Hozuki (voice)
Kana Yuuki
Asahi Ohka (voice)
Natsumi Hioka
Miyo Murosaki (voice)
Hiroaki Miura
Seme (voice)
Hisayoshi Suganuma
Uke (voice)
Reimi
Child - Brother (voice)
Emiri Suyama
Woman B (voice), Clerk (voice), Woman A (voice)
Yuuya Uchida
Leonardo (voice)
Hironari Nemoto
Movie Narration (voice)
Erisa Kuon
Hairdresser (voice), Woman B (voice), Woman A (voice)
Kousuke Goto
Spabone (voice)
Enako
Nicolala (voice)
Yoshie Saito
Child - Sister (voice), Reporter (voice), Tomoya Kiba (voice)
Yuri Ise
Student A (voice)
Ren Arata
Student B (voice)
Rina Tsukishiro
Nodoka Fushimi (voice)
Misaki Watada
Minori Shiina (voice)
Shingo Fujii
Director
Komawo Yukihiro
Director
Yasuhiko Akiyama
Director
Nobuyoshi Arai
Director
Hironori Tanaka
Director
Ayumu Uwano
Director
Aose Sakaguchi
Director
Eri Irei
Director
Hayato Kakita
Director
Michiko Yokote
Writer
Miharu Hirami
Writer
Keywords
About streaming ONIMAI: I'm Now Your Sister! worldwide
Our listings show subscription, free or ad-supported streaming for ONIMAI: I'm Now Your Sister! in 66 countries. Providers and access requirements vary by country.
In United States, the listed subscription streaming options for ONIMAI: I'm Now Your Sister! are Crunchyroll and Crunchyroll Amazon Channel.
Crunchyroll Amazon Channel is listed as a channel option. Check the channel's subscription requirements on its host platform before signing up.
These listings are for the show and do not confirm that every season or episode is included. Use the season selector to check a specific season.
Automatically summarized from TMDB watch-provider listings supplied by JustWatch. Listings fetched . Streaming availability can change. Rental and purchase offers are not included.