1962 Japanese movie

Yuka is a “good-time girl” from Yokohama who is persuaded by her papa to sleep with a foreign business executive so that he can close an important deal. Nakahira presents a shrewdly observed portrait of a modern, sexually assertive woman—an unsettling character for a changing but still patriarchal society.

The film is set in Karafuto after the radio broadcast of the Imperial Rescript on the Termination of the War. On August 15, 1945, Soviet forces invaded Karafuto. On August 20, the postal telegraph office in Maoka suspended operations and nine of the twelve telephone operators committed suicide by taking potassium cyanide while the city was being invaded.