Mayumi Yoshinaga

Itsuko, a university student, has lost interest in her boyfriend Kume's weak sexual relationship and is having an affair with her university assistant. Meanwhile, Itsuko's classmate Yoko is giving sex lessons to Makoto, a high school student she tutors. Makoto's brother, Jin, is a playboy who preys on the female university students who are Makoto's tutors one after another...

The fourth Toriko film. Atsuko, an office worker, attempted suicide in her office but was stopped by a window cleaner who witnessed the scene. However, since then, Atsuko has been receiving strange phone calls. The caller is a man who works as a window cleaner during the day and as an extreme S&M enthusiast at night…