DANDY-639 — "When An Innocent Schoolgirl Finds A Boy Restrained With The Key To His Handcuffs Attached To His Penis, Can She Keep From Getting Horny Even If He Gets An Erection?" Vol.1

A male student is caught on his way home from school and handcuffed outdoors. If you tie the key to the male student's penis, an innocent-looking serious female student will help him! The observation starts with this tip! Eventually, the serious female student comes to help, but she struggles to get the key, and the stimulation makes his penis erect! He is too embarrassed to look directly at her, but is excited by the erect penis. They have sex enthusiastically until the sun goes down.