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Oh Boy, Was I Wrong About Her

Oh Boy, Was I Wrong About Her

Tenkousaki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi datta Ken

TV · Summer 2026 · 12 episodes · Finished

DecentAniList 68%

Comedy · Romance

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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.

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Crunchyroll ↗

The verdict

Senpai’s take

Season picksDecentSummer 2026

A country bumpkin moves to Tokyo, reconnects with his estranged childhood friend and finds out he was a cute girl all along. Nothing special on the story front, but the genuineness of their friendship makes it work.

Trailer

Facts

Studio
project No.9
Source
Light novel
Season
Summer 2026
Episode length
24 minutes
Episodes
12
Format
TV
First aired
Jul 6, 2026
Last aired
Sep 21, 2026

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Characters

Hayato KirishimaHayato KirishimaMainShunichi Toki · Japanese voice
Haruki NikaidoHaruki NikaidoMainIkumi Hasegawa · Japanese voice
Himeko KirishimaHimeko KirishimaSupportingMiharu Hanai · Japanese voice
Minamo MitakeMinamo MitakeSupportingNatsumi Haruse · Japanese voice
Saki MuraoSaki MuraoSupportingFuuka Izumi · Japanese voice