FNS-199 Playing Pranks With Classmates In Preparation For The School Festival.The Masochistic Switch Is Turned On By The Biting Of The Rope Of The Shackles That I Tied Up As A Prank. After Struggling With My Lower Back, I Wake Up As A Masochist.From That

Film Introduction

While preparing for the school festival, she tied up her classmate Rin's hands as a prank, and her hidden M switch turned on.She gets her underwear wet and feels pleasure from the rope digging in and the feeling of being restrained.From there, the two engage in secret SM play all over the place - "I can't tell anyone" classmate sex.