
Oh Boy, Was I Wrong About Her (2026)
Seven years after making a childhood promise to always be friends, Hayato is reunited with his formerly tomboyish pal Haruki at a city high school–only now, Haruki has transformed into the girl every guy dreams about! While Haruki’s looks may have changed, with Hayato, she’s still the same pal he remembers. Despite years apart, their promise and feelings remain and deepen into something stronger.
Network: TOKYO MX
Stars: Ikumi Hasegawa, Shunichi Toki, Miharu Hanai, Natsumi Haruse
Latest: S1 E12 · Sep 21, 2026 Status: Ended
Oh Boy, Was I Wrong About Her is a Japanese animation TV series that premiered in 2026 on TOKYO MX. The show has 1 seasons and 12 episodes so far and is ended. The latest episode, S1 E12, aired on Sep 21, 2026.
Seasons
Cast

Ikumi Hasegawa
Haruki Nikaido (voice)

Shunichi Toki
Hayato Kirishima (voice)

Miharu Hanai
Himeko Kirishima (voice)

Natsumi Haruse
Minamo Mitake (voice)

Fuka Izumi
Saki Murao (voice)
Details
| First Aired | Jul 6, 2026 |
|---|---|
| Last Aired | Sep 21, 2026 |
| Country | Japan |
| Original Language | Japanese |
| Original Title | 転校先の清楚可憐な美少女が、昔男子と思って一緒に遊んだ幼馴染だった件 |
| Also Known As | 转学后班上的清纯可爱美少女,竟是小时候玩在一起的哥们儿, 关于班上美少女是小时候哥们儿这件事, 轉學後班上的清純可愛美少女,竟是小時候玩在一起的哥們兒, 转校生美少女竟是我曾经认为是男孩子的青梅竹马, Tenkou-saki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken |
| Networks | TOKYO MX |
| IMDb ID | tt41278615 |
| TMDB ID | 250008 |
Tags
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