Afternoon Breezes (1980)

風たちの午後

Two young girls, Mitsu and Natsuko, share the same apartment. Natsuko is Lesbian and secretly in love with Mitsu. But Mitsu is heterosexual and has a boyfriend. In the hope of destroying the relation between Mitsu and her boyfriend, Natsuko seduces the boyfriend and also tries to influence him in other ways.