Anime Detail

Oniichan wa Oshimai!

Onimai: I'm Now Your Sister!

TV Finished Airing PG-13 - Teens 13 or older Community Score: 7.65 Source: Manga

Episodes: 12

Aired: Jan 5, 2023 to Mar 23, 2023

Duration: 23 min per ep

Synopsis

A quick overview to decide if this title fits your taste.

Self-professed "home security guard" Mahiro Oyama has not left his home in years, secluding himself in his room playing erotic visual novels. This depraved lifestyle causes his prodigious sister, Mihari, to worry about his well-being. In hopes of solving this problem, she devises a plan to rehabilitate him back to normalcy. The first part of Mihari's plan is to concoct a medicine that changes her brother's biological constitution into a bona fide female, much to Mahiro's vehement dismay. Stuck in this predicament, Mahiro has no choice but to live out his life as a cute girl until the effect wears off—if it ever does. [Written by MAL Rewrite]

Stats at a glance

Performance and release metrics in a quick-scan format.

Rank

1637

Popularity

1467

Episodes

12

Aired

Jan 5, 2023 to Mar 23, 2023

Duration

23 min per ep

Members / Favorites

189766 / 2762

Studios

Production studios attached to this anime.

Studio Bind

Genres and Themes

Category signals to help you evaluate tone and style.

Genre: Comedy Theme: CGDCT Theme: Magical Sex Shift Theme: School Demographic: Shounen

Where to Watch

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No verified legal watch links available yet.

We only show verified legal sources.

External and Legal Links

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Characters

Main cast and notable voices linked to this anime.

Oyama, Mihari

Oyama, Mihari

Main

Voice actors: Ishihara, Kaori, Molina, Daniela

Oyama, Mahiro

Oyama, Mahiro

Main

Voice actors: Kouno, Marika, Wurmer, Lara

Fujimi, Nemu

Fujimi, Nemu

Supporting

Voice actors: Sakurai, Mia, Giraud, Johanna

Fushimi, Nodoka

Fushimi, Nodoka

Supporting

Voice actors: Tsukishiro, Rina

Haijima, Takeshi

Haijima, Takeshi

Supporting

Voice actors: Uchimura, Fumiko, Liu, Jay

Hozuki, Momiji

Hozuki, Momiji

Supporting

Voice actors: Tsuda, Minami, Schwarz, Sabrina

Hozuki, Kaede

Hozuki, Kaede

Supporting

Voice actors: Kanemoto, Hisako, Markiefka, Angelina

Kiba, Tomoya

Kiba, Tomoya

Supporting

Voice actors: Saitou, Yoshie

Kitahara, Yuriko

Kitahara, Yuriko

Supporting

Voice actors: Nagae, Rika, Hinrichs, Miriam

Kodaira, Makoto

Kodaira, Makoto

Supporting

Voice actors: Tanaka, Saya

Leonardo

Leonardo

Supporting

Voice actors: Uchida, Yuuya, Mondschein, Nicolai

Minakata, Rin

Minakata, Rin

Supporting

Voice actors: Yamamoto, Yuuki

Murosaki, Miyo

Murosaki, Miyo

Supporting

Voice actors: Hioka, Natsumi, Olbert, Melanie

Nagase, Miyako

Nagase, Miyako

Supporting

Voice actors: Oda, Karin

Nanami, Raika

Nanami, Raika

Supporting

Voice actors: Kuon, Erisa

Nishinomiya, Mari

Nishinomiya, Mari

Supporting

Voice actors: Mizuki, Rin

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