My Girlfriend’s Sister is a Masochist – Miyazaki Rin

Synopsis

I’m visiting my girlfriend’s house today. Starting in the afternoon, the three of us—me, my girlfriend (a college student), and her older sister (an office worker)—begin drinking at home in the living room. After a while, my girlfriend gets drunk and falls asleep on the sofa. While I’m relaxing next to her sleeping body, her sister suddenly starts undressing at the dining table across from us. Despite my surprise, the sister ties herself up with hemp rope while performing masochistic masturbation right in front of me, and shockingly begs me to train her…

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