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Poster for ONIMAI: I'm Now Your Sister!

ONIMAI: I'm Now Your Sister!

Original title: お兄ちゃんはおしまい！

  • TV series
  • 2023
  • TV-14
  • 1 season
  • 12 episodes
7.4

TMDB audience rating
7.4 out of 10 from 72 votes

Where to watch Trailer

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.

Roughly 4h 48m to watch every episode. This is an estimate: 12 episodes at the typical episode runtime of 24 minutes.

Where to watch

Official offers in the United States

Subscription

Included with a paid subscription
  • Crunchyroll
  • Crunchyroll Amazon Channel

Buy

Pay once to keep a digital copy
  • Amazon Video

Prices and links on TMDB

Availability data by JustWatch, provided through TMDB. Offers vary by country and change often, so confirm with the service before you subscribe, rent or buy. WatchTrove does not host or stream video.

Trailer

Play trailer: Promotional Video [Subtitled]

Official video hosted on YouTube. The player loads only when you press play.

Series cast and crew

  • Marika Kouno

    Marika KounoMahiro Oyama (voice)
    12 episodes

  • Kaori Ishihara

    Kaori IshiharaMihari Oyama (voice)
    12 episodes

  • Hisako Kanemoto

    Hisako KanemotoKaede Hozuki (voice)
    12 episodes

  • Minami Tsuda

    Minami TsudaMomiji Hozuki (voice)
    12 episodes

  • Kana Yuuki

    Kana YuukiAsahi Ohka (voice)
    12 episodes

  • Natsumi Hioka

    Natsumi HiokaMiyo Murosaki (voice)
    12 episodes

  • Yoshie Saito

    Yoshie SaitoTomoya Kiba (voice)
    5 episodes

  • Misaki Watada

    Misaki WatadaMinori Shiina (voice)
    4 episodes

  • Miyuu Takatsuki

    Miyuu TakatsukiSatsuki Takada (voice)
    4 episodes

  • Rena Aoshima

    Rena AoshimaYuta Sakurada (voice)
    4 episodes

  • Rika Abe

    Rika AbeMinato Senkawa (voice)
    4 episodes

  • Emiri Suyama

    Emiri SuyamaWoman A (voice)
    3 episodes

  • Erisa Kuon

    Erisa KuonWoman A (voice)
    3 episodes

  • Rina Tsukishiro

    Rina TsukishiroNodoka Fushimi (voice)
    3 episodes

  • Sayako Tojo

    Sayako TojoMai Yasaka (voice)
    3 episodes

  • Rin Mizuki

    Rin MizukiMari Nishinomiya (voice)
    3 episodes

  • Mia Sakurai

    Mia SakuraiNemu Fujimi (voice)
    3 episodes

  • Kumiko Nakane

    Kumiko NakaneWaitress (voice)
    2 episodes

Network
AT-X

Seasons and episodes