WOMAN IN THE MAN: Otoko no Naka no Onna(1993)

WOMAN IN THE MAN: Otoko no Naka no Onna

Tsuyomaru is a girlish boy while Hazumi is a tomboyish girl. Tsuyomaru is challenged to a fight by a student of another karate school, and while using a training machine operated by Hazumi, something goes wrong and they switch bodies...