Yuri's boyfriend's uncle has an image of being a mass of sexual desire, and Yuri has a physiological dislike for him. But this uncle lures Yuri into orgasmic hell. He has trained in the sex industry and has studied the portio and positions to seduce even women who are disliked! Yuri, who has become the victim, is developed to the point where she urinates in pleasure in front of a man she hates... A man from the sex industry develops the sexual sensitivity of his nephew's busty girlfriend in the portio position! Having discovered the joys of sex, Yuri is made to cum over and over again by a cock other than her boyfriend's, and urinates in a climax!