The Girl and the Wooden Horse Torture (1982)

Nami appears to be an average high school student, but she harbors intense masochistic fantasies and enjoys binding herself with ropes. After a confrontation with two delinquent girls, her teacher, Muraki—who suffers from a weak heart—intervenes to help her. Following this incident, Nami's vivid daydreams evolve to feature Muraki in various S&M scenarios. Fast forward two years, Nami, now in college, unexpectedly encounters Muraki and invites him for drinks. After a night of heavy drinking, he awakens in a themed hotel room where Nami is eager to bring her deepest desires to life.