About this series
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.
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ONIMAI: I'm Now Your Sister!
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Quick facts
First Aired
2023
Seasons
1
Episodes
12
TMDB Rating
⭐ 7.5/10
Votes
62
Genre
Animation, Comedy
Status
Ended
Network
AT-X
Language
JA
Seasons
S01E01
Mahiro's Confusing New Body
We follow Mahiro Oyama, an unemployed good-for-nothing shut-in, who not only hasn't left the house in two years, but is also exceedingly addicted to gross video games. One afternoo…
S01E02
Mahiro's Time of the Month
As Mahiro stumbles through his new life as a girl, he finds himself gradually beginning to get into the swing of things. Realizing this, however, prompts him to try and reclaim som…
S01E03
Mahiro's Close Encounter
Mahiro makes a mad dash for the bathroom, but when he opens the door, he finds the facilities are already occupied by a high school girl he's never met. This bold fashionista turns…
S01E04
Mahiro's New Friend
Mahiro loses to Mihari in a video game, so he has to do the grocery shopping this week as punishment. As an unemployed, good-for-nothing shut-in, the task at hand is daunting, but …
S01E05
Mahiro Discovers Adventure and Social Gatherings
In a rare turn of events, Mihari wakes up one morning to find Mahiro has gotten up before her. Since the corner store was going to start selling clear files from his favorite anime…
S01E06
Mahiro Goes Back to Middle School
Momiji shows up at Mahiro's house with her two classmates, Asahi Ohka and Miyo Murosaki, to invite him out for parfaits.
S01E07
Mahiro's Role-Playing Game
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% b…
S01E08
Mahiro's First Girls Sleepover
It's finally winter break and Mahiro is excited to get into his Winter Vacation Mode. Unbeknownst to him, however, Mihari invites Momiji and the others over for a sleepover. She ho…
S01E09
Mahiro Rings in the New Year
It's Christmas and Mahiro is shocked to hear his own little sister has a date. Unable to shake his unease, he follows her through the festive hustle and bustle in secret, with Momi…
S01E10
Mahiro Ponders Boobs and Identity
It's the start of the third semester and winter uniforms are now in effect. For Mahiro and the girls at school, this means braving the cold winter air in mandatory skirts. Who know…
S01E11
Mahiro Pretties Up
Horoscopes are all the rage at school right now, and Mahiro is curious to see what all the fuss about. According to his forecast, an important occasion is on the horizon and he may…
S01E12
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 sout…
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Cast/p>
slice of life
middle school
based on manga
junior high school
school life
ecchi
anime
gender swap
age change
grand
middle school girls
japanese junior high schooler
Questions about ONIMAI: I'm Now Your Sister!
How many seasons does ONIMAI: I'm Now Your Sister! have?
ONIMAI: I'm Now Your Sister! has 1 season and 12 episodes total.
What genre is ONIMAI: I'm Now Your Sister!?
ONIMAI: I'm Now Your Sister! is a Animation, Comedy series.
Who stars in ONIMAI: I'm Now Your Sister!?
The cast of ONIMAI: I'm Now Your Sister! includes Marika Kouno, Kaori Ishihara, Hisako Kanemoto, Minami Tsuda, Kana Yuuki.
What is the TMDB rating for ONIMAI: I'm Now Your Sister!?
ONIMAI: I'm Now Your Sister! has a TMDB rating of 7.5/10 based on 62 votes.
