If she refuses to have sex with her brother, Suzu will be hated by her brother. An abusive brother repeatedly commits sexual mischief by taking advantage of his brother's younger sister "Suzu's" admiration for him and recording it on a video camera. The distorted desires escalate. Delivery on the net, friends' peeing meat, vaginal cum shooting on a dangerous day... The younger sister is harassing her brother's child, saying that at least if she gets pregnant, she will prefer her brother's child.