GVH-369 Her sister is a masochist Rin Miyazaki

``I'' came to visit her at her house today. - During the day, I, my girlfriend (a college student), and her sister (an office worker) started drinking at home in the living room. - After a while, she probably got so drunk that she fell asleep on the sofa. - I had no choice but to relax next to my sleeping girlfriend when her sister suddenly started taking off her clothes in the dining room across from me. - Even though I was watching in amazement, my sister tied herself up with hemp rope and showed off her masochist masturbation, and begged me to train her...