Afternoon Breezes (1980)

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. Mitsu finds out and throws Natsuko out of the apartment. But Natsuko's love and possession remains. Secretly and never detected she follows and watches Mitsu, in particularly when she has fun with her boyfriend. She even finds Mitsu's garbage bag and eats the other part of a half-eaten apple to obtain some connection with her beloved. She is through and through permeated by a feeling of completely empty despair.