Japanese crime film

Pinku from 1972.

Nikkatsu Roman Porno

A virgin son-in-law, a strong woman, a pervert, and a confused innocent couple. Their sexual desire begins to tingle on their first night!

While peeping on couples in the park an old man remembers the sexual experiences of his university days and the period during and after the war.

Spread over three time periods (Summer 10 Years Ago/Summer 5 Years Ago/This Summer), Lost Virgin tells the tale of good-time girl Chisato (Sasaki), hungry for new experiences yet ultimately in search of emotional fulfilment.