In this adult school role-play, model student and council president Yui hides a secret kink: she becomes aroused when tightly bound with hemp rope. Even in class, she keeps a serious face while wearing rope beneath her clothes instead of underwear. It began when a teacher role-play partner half-forced her into bondage sex, awakening her masochistic side through repeated rope training. The finale displays the gifted and beautiful council president bound before an audience and squirting uncontrollably.