完熟姉妹淫辱痴漢電車～囚われた美人姉妹～

あらすじ

Minoru is just a university student. But he has a secret that he is an expert on train molestation. One day, he meets a beautiful girl, Fumika, on the train and successfully enjoys train molestation. When he walks around the university, he sees Fumika again. It seems she works at the university. Minoru is happy to know that and decides to keep on molesting her. On the next day, he meets Fumika on the train. But she is with Hazuki, her older sister. He plans to make both of them his sex slave....