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ONIMAI: I'm Now Your Sister! (2023) — Anime | MyListZone

ONIMAI: I'm Now Your Sister!

AnimereleasedAnimationComedy

ONIMAI: I'm Now Your Sister!

お兄ちゃんはおしまい！

2023 · TV · 12 episodes · 日本語 · Japan

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.

7.5

12.6 popularity

At a glance

Details

Release date: 2023-01-05
Status: released
Format: TV
Source: TBA
Creator: Nekotofu
Language: 日本語
Studio: AT-X
Certification: TV-14
Seasons: 1
Episodes: 12

Genres

AnimationComedy

Keywords

slice of lifemiddle schoolbased on mangajunior high schoolschool lifeecchianimegender swapage changegrandmiddle school girlsjapanese junior high schoolerenraged

Seasons & episodes

Season 1

Season 1

2023 · 12 episodes

0 of 12 watched0%

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Cast

Marika Kouno

Marika Kouno

Mahiro Oyama (voice)

Kaori Ishihara

Kaori Ishihara

Mihari Oyama (voice)

Hisako Kanemoto

Hisako Kanemoto

Kaede Hozuki (voice)

Minami Tsuda

Minami Tsuda

Momiji Hozuki (voice)

Kana Yuuki

Kana Yuuki

Asahi Ohka (voice)

Natsumi Hioka

Natsumi Hioka

Miyo Murosaki (voice)

Media

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7.5

0 community reviews

MP
Mina Park7/10Apr 18, 2026
Beautifully paced
The animation direction and emotional beats make this one easy to keep watching.
48 found helpful
KT
Kai Tanaka8/10Apr 13, 2026
Worth the season pass
A strong blend of world-building, memorable characters, and satisfying episode hooks.
41 found helpful
AC
Ari Chen9/10Apr 8, 2026
Strong character work
The quieter scenes land just as well as the action, which is what makes it stick.
34 found helpful

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