Puppets Under Starry Skies (1978)

Original title: 星空のマリオネット

A young Japanese man finds himself in the company of a strange, effeminate gay man and a girl with a seedy sexual history and who even now is pregnant again. They share a predisposition for drug use and spend time together in an old house. He refuses the advances of the gay man, who then commits suicide. When a gang administers a beating to him, his father re-enters the scene and takes him home, along with the girl. However, the girl has decided to have her baby, and she goes to live with its father.