When boarding a crowded train, there are all sorts of people around, but the girl sitting next to you stands out. Her pussy instantly gets wet from just the brush of a man's fingertips. She wears an obscenely aroused expression, completely unconcerned about the people watching. Even though she's being molested, for some reason her hips start moving involuntarily. Again today, she rides the packed train, heart pounding with anticipation. She can no longer be satisfied by her own fingers alone. With these feelings, she rides the train every day.