This role-play is performed by adults. ``Why did something like this happen?'' A proud girlfriend who participated in the summer training camp of her track and field club gets taken advantage of by the erotic club members. In the group life of training camp, the coach and the male club members have become just perverts and lewd men. Power harassment and sexual harassment take advantage of the absolute hierarchical relationship, and play with Miyu's athletic muscular body. Her boyfriend ends up in the depths of misfortune when his girlfriend's NTR video, where he feels his cock being fucked, is streamed live for no good reason...