It's Christmas and Mahiro is shocked to hear his own little sister has a date. Unable to shake his unease, he follows her through the festive hustle and bustle in secret, with Momiji as his escort in tow. Who could Mihari possibly be meeting with?
| Title | ONIMAI: I'm Now Your Sister! - Season 1 Episode 9 Mahiro Rings in the New Year |
|---|---|
| Year | 2023 |
| Genre | Animation, Comedy |
| Country | Japan |
| Studio | AT-X |
| Cast | Marika Kouno, Kaori Ishihara, Hisako Kanemoto, Minami Tsuda, Kana Yuuki, Natsumi Hioka |
| Crew | Michiko Yokote (Series Composition), Shingo Fujii (Series Director), Ryo Imamura (Character Designer), Daisuke Achiwa (Original Music Composer), Alisa Okehazama (Original Music Composer), Yuji Oka (Editor) |
| Alternative Titles | 别当哥哥了！, 不当哥哥了！, 别当欧尼酱了！, ¡Ahora soy tu hermana!, Onii-chan wa Oshimai!, Onimai, Onii-chan ha Oshimai!, Oniichan ha Oshimai!, Oniichan wa Oshimai!, お兄ちゃんはおしまい！, 오빠끝, Onii-chan Is Done For!, Older Brother Is Done For! |
| Keyword | slice of life, middle school, based on manga, junior high school, school life, seinen, anime, gender swap, age change, middle school girls |
| First Air Date | Jan 05, 2023 |
| Last Air date | Mar 23, 2023 |
| Season | 1 Season |
| Episode | 12 Episode |
| Runtime | 24:14 minutes |
| Quality | HD |
| IMDb: | 7.10/ 10 by 36.00 users |
| Popularity | 79.874 |
| Language | Japanese |
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