GVH-395 Her sister is a masochist, Natsu Tojo

"I" was visiting her house today. Me, my girlfriend, and her sister started drinking at home in the middle of the day, but we fell asleep on the sofa because we got drunk. After a while, I woke up to find her sister suddenly taking off her clothes in the kitchen across the street. She realizes I'm watching her sister naked and showing off her masochistic masochism, she seduces me by saying things like "I wanted to meet you before her sister..." . And she begged me to train her...