Kodoani.com – The official website for the anime adaptation of the ONIMAI : I’m Now Your Sister! (Onii-chan wa Oshimai!) revealed the promotional video and second image for the anime on Monday. The video reveals more cast and staff, as well as the anime premiere on January 5. The trailer also reveals the opening theme song “Identeitei Meltdown.”
New cast members include:
Kana Yūki as Asahi Ōka, Momiji’s cheerful classmate
Natsumi Hioka as Miyo Murosaki, Momiji’s slightly shy classmate
The previously announced cast includes:
Marika Kono voices the main character Mahiro Oyama Kaori Ishihara voices Mihari Oyama, Mahiro Hisako Kanemoto’s younger sister voices Kaede Hozuki, Mihari’s former middle school classmate Minami Tsuda voices Momiji Hozuki, Kaede’s younger sister
Additional staff members include:
Art Director: Masayo Kobayashi
Main Color Artist: Makiko Doi
General Director of Photography: Akane Fushihara
Editor: Yji Oka
Sound Director: Kōhei Yoshida
Sound Effects: Takuya Hasegawa
Music: Daisuke Achiwa, Arisa Okehazama
The anime will premiere on the AT-X channel on January 5 at 11:30 p.m. EST (9:30 a.m. EST), and it will also run on Tokyo MX and BS11.
Shingo Fujii will direct the anime series at Studio Bind. Michiko Yokote (Shirobako, Prison School Love All Play, Tsurune) is in charge of the series’ scripts. Ryo Imamura is designing the characters. EGG FIRM is producing the series.
]P Maru-sama and cosplayer Enako will collaborate to perform the opening theme song “Identeitei Meltdown,” while “Onimai Sisters” (voice actresses for the main characters: Marika Kōno, Kaori Ishihara, Hisako Kanemoto, Minami Tsuda), performing the ending theme song “Himegoto * Cry Sisters.”
Mahiro Oyama is just a guy who loves ero games…until a prostitute wakes up one morning as a girl! It turns out that his mad scientist sister, Mihari, tried one of her new experiments on the otaku guy… with a disastrous outcome, as far as Mahiro was concerned! But Mihari is still determined to research him because he’s determined to get back to his net life, gaming, and one thing’s for sure… life is going to get a lot weirder from here on out!
The manga began as a self-published work by Nekotofu in 2017, published through pixiv and elsewhere online. Nekotofu launched a regular manga series in Ichijinsha’s Comic Rex magazine in April 2019. Ichijinsha published the manga’s sixth compiled book volume and its second volume on the same April 27.