Cruel Story of Youth (1961)

In 1960 Japan, restless university student Kyoshi (Yusuke Kawazu) seduces pretty teenager Makoto (Miyuki Kuwanu) and quickly convinces her to take part in a dark, cruel scheme, both to get easy money and to keep their boredom at bay. Kyoshi and Makoto begin preying on middle-aged men, who easily succumb to Makoto's charms, only to be blackmailed. The couple's growing frustration with the constricted world around them pushes them into increasingly ruthless behavior.