ONIMAI: I'm Now Your Sister! - Season 1 - Eps 5: 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 that day, he had woken up early to go pick them up before they sold out. Mihari is overwhelmed with joy to see Mahiro going outside of his own accord. On his way back from buying the clear files, Mahiro stops by an arcade for the first time since middle school. He's enjoying a rhythm game when suddenly he senses a man standing watching him from behind. A few minutes go by when he feels a tap on the shoulder...
About ONIMAI: I'm Now Your Sister!

Title: ONIMAI: I'm Now Your Sister!
First Air Date: 2023-01-05
Last Air Date: 2023-03-23
Status: Ended
Rating: 7.4/10 (from 42 votes)
Language: JA
Seasons: 1
Total Episodes: 12
Network: AT-X
Genres: Animation, Comedy
Production Companies: Studio Bind, EGG FIRM, Ichijinsha, TOHO, Hakuhodo DY Music & Pictures, AT-X, BS11, PIA Corporation, Pony Canyon, movic, Tokyo MX, Bit grooove promotion
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.
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)