Back to ONIMAI: I'm Now Your Sister!Now Playing

ONIMAI: I'm Now Your Sister!

202324m / epAnimation · Comedy

First aired

January 5, 2023

7.4

TMDB Score

74% match · 72 votes

Loading VidBolt…

S01 · E07

Mahiro's Role-Playing Game

Season 1 · Feb 16, 2023 · 23m

Mahiro's Confusing New Body

Jan 5, 2023 · 23m

Mahiro's Time of the Month

Jan 12, 2023 · 23m

Mahiro's Close Encounter

Jan 19, 2023 · 23m

Mahiro's New Friend

Jan 26, 2023 · 23m

Mahiro Discovers Adventure and Social Gatherings

Feb 2, 2023 · 23m

Mahiro Goes Back to Middle School

Feb 9, 2023 · 23m

Mahiro's Role-Playing Game

Feb 16, 2023 · 23m

Mahiro's First Girls Sleepover

Feb 23, 2023 · 23m

Mahiro Rings in the New Year

Mar 2, 2023 · 23m

Mahiro Ponders Boobs and Identity

Mar 9, 2023 · 23m

Mahiro Pretties Up

Mar 16, 2023 · 23m

Mahiro's Future as a Sister

Mar 23, 2023 · 23m

Just when Mahiro is beginning to get used to middle school life again, finals are upon them. Despite his initial blasé attitude, Mahiro finds himself reluctantly handing in a 80% blank answer sheet after having slept through the entire first exam.

About the Series

ONIMAI: I'm Now Your Sister! poster

AnimationComedy

Synopsis

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.

First aired: January 5, 2023
Last aired: March 23, 2023
Seasons: 1 season · 12 episodes
Status: Ended
Original language: Japanese
Network: AT-X

Top Billed Cast

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)

More Like This

The Dangers in My Heart

2023Series

School Rumble

2004Series

Daily Lives of High School Boys

2012Series

The Disappearance of Nagato Yuki-chan

2015Series

Shikimori's Not Just a Cutie

2022Series

Hana-Kimi

2026Series

Maison Ikkoku

1986Series

Non Non Biyori

2013Series

Alya Sometimes Hides Her Feelings in Russian

2024Series

Himouto! Umaru-chan

2015Series

Wasteful Days of High School Girls

2019Series

Pseudo Harem

2024Series