The Japanese Tie Up 1980 on netflix

Separated from her lover Kenji after he is sent off to war, Sanae is raped by general Takada and gives birth to a girl, Junko, who grows up to become a prostitute. One day, Kenji accidentally meets Junko and confuses her with Sanae, prompting Junko to tell him of her mother’s fate. They make love, leaving Junko pregnant with his child – Hiroko, who goes on to have a chance encounter with Takada at a hostess club…