Oh Boy, Was I Wrong About Her English Sub & Dub

About Oh Boy, Was I Wrong About Her

Oh Boy, Was I Wrong About Her (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) arrives as a comedy anime by project No.9 (2026), and the premise is easy to summarize. The setup: Seven years after making a childhood promise to always be friends, Hayato is reunited with his formerly tomboyish pal Haruki at a town 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.

Another thread: Despite years apart, their promise and feelings remain and deepen into something stronger.

In a comedy series like this, timing, character chemistry and running gags decide whether it lands. Voice work is led by Shunichi Toki as Hayato Kirishima and Ikumi Hasegawa as Haruki Nikaido. This one is best suited to viewers who want something light between heavier series. With 12 episodes in total, there is enough room for the story to develop.

Production & Appeal

Animation is handled by project No.9, so the studio's house style defines how Oh Boy, Was I Wrong About Her looks and moves on screen. Within the comedy category, timing, character chemistry and running gags decide whether it lands. With a 6.8/10 score, it is more of a niche pick than a universal crowd-pleaser. On the casting side, Shunichi Toki voicing Hayato Kirishima gives the lead role a recognizable voice. It aired in 2026, which makes it easy to place in the wider anime calendar.