[Reducing Mosaic]FNS-199 During preparations for the cultural festival, fooling around with classmates. The rope marks from being tied up as a prank triggered my masochistic switch—after enduring the writhing hips and holding back moans, I awakened as a masochistic pet. F

Film Introduction

During the cultural festival preparations, a classmate Rin's hands were tied as a prank, turning on her hidden M switch. She soaked her underwear with the rope digging in and the feeling of restraint, experiencing pleasure. From then on, the two engaged in secret SM play everywhere — "Can't tell anyone" sex education between classmates.