ONIMAI: I'm Now Your Sister!

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.

Cast & Crew

Marika KounoMahiro Oyama (voice)

Kaori IshiharaMihari Oyama (voice)

Hisako KanemotoKaede Hozuki (voice)

Minami TsudaMomiji Hozuki (voice)

Kana YuukiAsahi Ohka (voice)

Natsumi HiokaMiyo Murosaki (voice)

Seasons

Episodes (12)

Recommendations

7.5

School Rumble

2004Series

8.0

Daily Lives of High School Boys

2012Series

7.7

Shikimori's Not Just a Cutie

2022Series

8.0

The Disappearance of Nagato Yuki-chan

2015Series

7.6

Wasteful Days of High School Girls

2019Series

7.9

Non Non Biyori

2013Series

7.9

Alya Sometimes Hides Her Feelings in Russian

2024Series

6.1

Miru Tights

2019Series

8.2

Himouto! Umaru-chan

2015Series

7.9

Pseudo Harem

2024Series

6.4

Kinmoza!

2013Series

7.6

Maison Ikkoku

1986Series

9.3

Go for It, Nakamura-kun!!

2026Series

6.7

The Kawai Complex Guide to Manors and Hostel Behavior

2014Series

6.1

When Will Ayumu Make His Move?

2022Series

7.3

Hana-Kimi

2026Series

8.2

Yamada-kun and the Seven Witches

2015Series

8.5

Maid Sama!

2010Series

7.4

Yuyushiki

2013Series

7.6

Grandpa and Grandma Turn Young Again

2024Series