ONIMAI: I'm Now Your Sister!
2023•TV-14•1 Seasons•12 Episodes•7.4•Ended
AnimationComedy
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.
Network
AT-X
Origin
JP
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)
Episodes
Recommended
8.6
The Dangers in My Heart
2023
7.5
School Rumble
2004
8
Daily Lives of High School Boys
2012
8
The Disappearance of Nagato Yuki-chan
2015
7.7
Shikimori's Not Just a Cutie
2022
7.8
Non Non Biyori
2013
7.6
Maison Ikkoku
1986
8
Alya Sometimes Hides Her Feelings in Russian
2024
7.7
Wasteful Days of High School Girls
2019
8.2
Himouto! Umaru-chan
2015
7.7
Hana-Kimi
2026
8.2
Pseudo Harem
2024
7.3
My Friend's Little Sister Has It In for Me!
2025
6.1
Miru Tights
2019
6.7
The Kawai Complex Guide to Manors and Hostel Behavior
2014
8.5
Maid Sama!
2010
6.1
When Will Ayumu Make His Move?
2022
6.4
Kinmoza!
2013
7.7
The Angel Next Door Spoils Me Rotten
2023
6.8
Urusei Yatsura
2022
Similar Shows
7.1
Harem Camp!
2022
2.5
Tatsuya Miyanishi Theatre: Heart and Yummie
2010
7.3
Star Detective Precure!
2026
Cutie Honey: Beloved Enemy
2025
8.8
Battle Spirits: Brave
2010
6.6
Mythical Detective Loki Ragnarok
2003
10
Ultra B
1987
8.4
Delicious in Dungeon
2024
Ultraman Kids no Kotowaza Monogatari
1986
7
African Office Worker
2017
7.8
Grandpa and Grandma Turn Young Again
2024
7
The Two Lottes
1991
7
Josephina the Whale
1979
7.6
Mama is a 4th Grader
1992
3.4
Ex-Arm
2021
Striped Sheep
2011
6
True Love Story Summer Days, and yet...
2003
6
Ariel
1989
6.9
Angel Densetsu
1996
8
The Dragon Next Door
2024