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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) is an upcoming Japanese anime television series releasing on July 6, 2026. The series follows Hayato, who reunites with his childhood friend Haruki — once believed to be a boy — now a classmate who has grown into a young woman.
The series premieres on July 6, 2026.
The series follows Hayato, who reunites with his childhood friend Haruki — whom he had always assumed was a boy — when she transfers to his school years after the two made a promise of friendship.
The original Japanese title is 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.
The series is produced in Japanese.
Oh Boy, Was I Wrong About Her is a Japanese-language anime television series scheduled to premiere on July 6, 2026. The story centers on Hayato, who made a childhood promise of lasting friendship with a companion named Haruki. Years later, Haruki transfers to his school and Hayato discovers that the friend he always assumed was a boy is, in fact, a girl. The series is based on source material carrying the Japanese 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.
