DANDY-639 "A pure-hearted female student who found a male student restrained with handcuffs attached to his penis—can she remain unaroused even when he gets an erection?" VOL.1

A boy who is on his way home from school is caught and restrained outdoors with handcuffs. It seems that serious girls who seem innocent will help you if you tie the key to the boy's cock! Observation starts from the sauce! Eventually, a serious girl ○ student comes to help, but it is a struggle to take the key, and the stimulus makes the cock erect! I'm shy and can't look directly, but I'm excited about the erection. I'm crazy about sex until the sun goes down.