Des:She is the ace of the extremely popular swimming club at the school. I am a permanent substitute... However, she is not what she seems, she is a lewd club member who masturbates in school! I witnessed the scene and got a hold of her weakness, but when I forced her to masturbate as well, she got excited as she had never seen her raw penis before. ! From that day on, when she was called to her empty clubroom almost every day, she rubbed my erect penis against her crotch through her swimsuit...