Cast and Crew of ONIMAI: I'm Now Your Sister!

Cast of
ONIMAI: I'm Now Your Sister!

About 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.

Main Cast of ONIMAI: I'm Now Your Sister!

Marika Kouno
plays Mahiro Oyama (voice) (12 episodes)

Marika Kouno as Mahiro Oyama (voice)

Marika Kouno (高野 麻里佳, Kōno Marika, born February 22, 1994) is a Japanese voice actress (seiyū) and singer from Tokyo....

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Kaori Ishihara
plays Mihari Oyama (voice) (12 episodes)

Kaori Ishihara as Mihari Oyama (voice)

Kaori Ishihara is a Japanese pop singer, voice actress, idol, and actress managed by Style Cube since 2011. She was f...

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Hisako Kanemoto
plays Kaede Hozuki (voice) (12 episodes)

Hisako Kanemoto as Kaede Hozuki (voice)

Hisako Kanemoto, also known as Juri Aikawa, is a Japanese voice actress from Okayama Prefecture, Japan. She is affil...

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Minami Tsuda
plays Momiji Hozuki (voice) (12 episodes)

Minami Tsuda as Momiji Hozuki (voice)

Minami Tsuda (津田 美波, Tsuda Minami, born June 8, 1989) is a Japanese voice actress (seiyū) from Kanagawa Prefecture. S...

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Kana Yuuki
plays Asahi Ohka (voice) (12 episodes)

Natsumi Hioka
plays Miyo Murosaki (voice) (12 episodes)

Secondary Cast of ONIMAI: I'm Now Your Sister!

Hiroaki Miura
plays Seme (voice) (1 episode)

Hisayoshi Suganuma
plays Uke (voice) (1 episode)

Hisayoshi Suganuma as Uke (voice)

Hisayoshi Suganuma (菅沼 久義, Suganuma Hisayoshi, September 30, 1978) is a Japanese voice actor born in Tokyo affiliated...

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plays Child - Brother (voice) (1 episode)

Emiri Suyama
plays Woman B (voice) (1 episode) , Clerk (voice) (1 episode) , Woman A (voice) (1 episode)

Emiri Suyama as Woman B (voice)

Emiri Suyama (陶山 恵実里, Suyama Emiri, May 26, 1999) is a Japanese voice actress and idol from Tokyo and former member o...

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Yuuya Uchida
plays Leonardo (voice) (1 episode)

Yuuya Uchida as Leonardo (voice)

Voice actor and stage actor. Not to be confused with the musician and actor Yuya Uchida (1939-2019).

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Hironari Nemoto
plays Movie Narration (voice) (1 episode)

Erisa Kuon
plays Hairdresser (voice) (1 episode) , Woman B (voice) (1 episode) , Woman A (voice) (1 episode)

Kousuke Goto
plays Spabone (voice) (1 episode)

plays Nicolala (voice) (1 episode)

Yuri Ise
plays Student A (voice) (1 episode)

Yoshie Saito
plays Erotic Game Voice (voice) (1 episode) , Child - Sister (voice) (1 episode) , Reporter (voice) (1 episode) , Tomoya Kiba (voice) (2 episodes)

Ren Arata
plays Student B (voice) (1 episode)

Rina Tsukishiro
plays Nodoka Fushimi (voice) (3 episodes)

Kumiko Nakane
plays Watch Stand (voice) (1 episode) , Waitress (voice) (1 episode)

Kumiko Nakane as Watch Stand (voice)

Kumiko Nakane (中根 久美子, Nakane Kumiko, August 18) is a Japanese voice actress (seiyū) from Fukushima Prefecture. She i...

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Misaki Watada
plays Minori Shiina (voice) (4 episodes)

Miyuu Takatsuki
plays Satsuki Takada (voice) (4 episodes)

Sayako Tojo
plays Mai Yasaka (voice) (3 episodes)

Mitsuki Nakamura
plays Announcer (voice) (1 episode) , Truant Officer (voice) (1 episode)

Rena Aoshima
plays Yuta Sakurada (voice) (4 episodes)

Rika Abe
plays Minato Senkawa (voice) (4 episodes)

Rin Mizuki
plays Mari Nishinomiya (voice) (3 episodes)

Yuuki Yamamoto
plays Rin Minakata (voice) (1 episode)

Hina Yomiya
plays Clerk (voice) (1 episode)

Mia Sakurai
plays Nemu Fujimi (voice) (3 episodes)

Rika Nagae
plays Yuriko Kitahara (voice) (1 episode)

Rika Nagae as Yuriko Kitahara (voice)

Rika Nagae (長江 里加, Nagae Rika, September 28) is a Japanese voice actress (seiyuu) born in Saitama Prefecture. She is ...

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Karin Oda
plays Miyako Nagase (voice) (2 episodes)

Fumiko Uchimura
plays Takeshi Haijima (voice) (2 episodes)

Fumiko Uchimura as Takeshi Haijima (voice)

Fumiko Uchimura (内村 史子, Uchimura Fumiko, December 16) is a Japanese voice actress from Kagoshima Prefecture. She is a...

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Saya Tanaka
plays Makoto Kodaira (voice) (2 episodes)

Sachiko Okada
plays Landlady (voice) (1 episode)

Sachiko Okada as Landlady (voice)

Sachiko Okada was born on April 5, 1980 and is currently 44 years old.

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Kosuke Kobayashi
plays Announcement (voice) (1 episode)

Kosuke Kobayashi as Announcement (voice)

Kosuke Kobayashi (小林 康介, Kobayashi Kōsuke, born January 28, 1980) is a Japanese voice actor from Toyama Prefecture. H...

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Crew of ONIMAI: I'm Now Your Sister!

Discover the backstage crew of ONIMAI: I'm Now Your Sister! →