Himari and her childhood friends Takumi and Shinji often drink at home together. Himari and Shinji developed a good atmosphere, and Himari confessed to him when Takumi was not around. Himari accepted the confession, and they started dating. But that was the beginning of a nightmare. Himari is Takumi's sex partner, and Shinji despairs over the fact that she orgasms more with him than with himself, but his erection does not subside.
