She is the ace of the super popular swimming team at school. I'm a perpetual reserve... But contrary to appearances, she was a dirty team member who masturbated at school! I witnessed the scene and got a hold of her weakness, but I forced her to masturbate as well, and she got very excited because she had never seen a real penis! From that day on, she was called to the empty club room almost every day, and she rubbed my erect penis against her crotch through her swimsuit...