Even though full sex is forbidden, the girl surprisingly says OK!? When he calls a delivery health service, the woman who appears is his first love from school, his best friend's girlfriend, or even his married subordinate from work! Despite the shock of the unexpected encounter, the two feel their incredible chemistry through rule-abiding sexual services like showering together, kissing, and sumata. As the session ends and they reluctantly part ways, a passionate kiss causes both of their reason to collapse! Unable to hold back, the woman demands rule-breaking full sex, saying, "I just have to do it right now..." and an impulsive, intense session of sex begins!