Himari and her childhood friends Takumi and Shinji often drink at home, and Himari and Shinji have a nice atmosphere, confessing in the absence of Takumi, and Himari who accepts it will go out with him. But that was the beginning of a nightmare. Shinji was desperate for the fact that Himari was Takumi's saffle and that she was more climax than having sex with herself, but her erection did not subside.