"I" was coming to her house today. From daytime, I, her (university student), and her sister (OL) start drinking at home in the living room. After a while she fell asleep on the sofa, probably because she got sick. I had no choice but to relax next to her sleeping and her sister suddenly took off her clothes in the dining room opposite. Even though I was surprised, my sister showed me masochist masturbation while tying herself with a hemp rope and begged me for training ...
