I Are You, You Are Me

Like in the 1940 film Turnabout by director Hal Roach, based on the book by Thorne Smith, a man and woman magically switch gender in Tenkosei (Transfer Student). Kazuo (Toshinori Omi) and Kazumi (Satomi Kobayashi) are high school students whose souls accidentally switch bodies, causing all number of misunderstandings that play out for most of the film. Kazuo in a female body, forgets to put the upper half of his swimsuit on while Kazumi in her male form, punches out a bully. Before things get too confusing, the two hope that they will be able to switch back again.