Tokyo Emanuelle (1975)

After marrying a Frenchman, Pierre, Kyoko returns to Japan for the first time in six years. Eiko, with whom she used to have a relationship, comes to pick her up. When she goes out to an exclusive club, Eiko introduces her to Maki, a professor at a women's university. She is fascinated by Maki, who tells her that there is true eroticism in taboo sex. Seeing how thoroughly Maki has transformed Kyoko, Eiko hopes that Kyoko will decide not to return to Paris.