A beautiful captain from the swimming club and her partner are alone in a room, rubbing their bare buttocks together in swimsuits! HUNTB-392

She's the most popular ace swimmer in the school. I'm just a perennial substitute... But she's actually quite different from her appearance; she's an incredibly lewd club member who masturbates on campus. I witnessed it firsthand, and although I caught her red-handed, I was forced to masturbate as well. She, who had never seen a penis before, became incredibly excited. From that day on, I was called to the clubroom every day when no one else was there, and she would rub her genitals against my erect penis through her swimsuit...