Sexual Confessions at Twenty: Leaning Back (1978)

Overview

Eiji, a mechanic at a car factory, is being taken advantage of by his senior colleague, Tashiro. Eiji is attracted to Tashiro's girlfriend, Reiko (Miyai), who teases and provokes him, and unknowingly steals her underwear. As a result, Eiji is forced to condone Tashiro's illegal resale of car parts. One day, Eiji's eyes fall on the pen pal section of a magazine, and after reading an ad seeking a boyfriend, he begins writing replies one after another with anticipation. As Eiji goes on dates with the women who have written to him, his desires grow. And so, Eiji begins having relationships with the women he's been writing to as pen pals. Based on the true story of a series of rapes and murders.