Houkago, himitsu no kinbaku ecchi. Tada no doukyuusei datta watashitachi ga SM rezu sekkusu ni oboreru made…

"I wonder if being tied up with ropes feels good?" With this shocking remark, Aoi, Kana's best friend, after witnessing her parents' bondage play, awakens a forbidden curiosity. Unable to resist, Kana...