Hosoda, the homeroom teacher, is a perverted S-man with a desire for bondage, and every night he masturbates with the fantasy of tying up his student Himesaki. One day, he summoned her to his home under the guise of giving her career guidance, and placed a rope where she could see it, and she glanced at it. Seeing her appearance, Hosoda is convinced that she has a 'bondage desire' and uses her clever words to guide her into bondage. She doesn't like it at first, but on the other hand, her pussy gets drenched. From there, through Hosoda's 'punishment', her perverted nature further accelerates.