Yoru no Henrin plot
Yoshie, a factory worker by day, works as a bar hostess by night. One of the regulars, Eiji, invites her on a date. Yoshie is only 19 but joins them out of curiosity and ends up with Eiji in a hotel that night. The two begin a passionate love affair and move in together, after which Yoshie begins to skip work at the factory and rarely returns to her childhood home. It doesn't take long for Eiji's behavior to change, however, and he starts constantly asking Yoshie for money. Despite claiming to be a businessman, he is actually a local thug. Eiji's inability to pay his dues to his gang leads him to force Yoshie into prostitution...