Himari, Takumi, and Shinji, who are childhood friends, often drink at home together, and Himari and Shinji become close, and Shinji confesses in a place where Takumi is not, and Himari, who accepted it, decided to date. but that was the beginning of a nightmare. himari is takumi's sex friend, and shinji, despite despairing at the fact that she had orgasmed more with him than with me, his erection never subsided.