Des：Yuko and Kojis parent-child relationship is strained, and they end up cursing each other whenever they see each other. When they get into an argument that day, Yuko insults her with words that stimulate her sexual complex, such as ``I dont have much experience and ``Im not popular. Yuko looks down at Koji, who cannot say anything in response. Seeing her triumphant expression, Koji trembles with anger and decides to take revenge. The way to do that was to mount him through sex and sexually dominate Yuko...