Crushed by dissatisfaction in her marriage and the pressures of raising children, Saryu Usui secretly yearned for excitement deep inside. One day, she met a man on her way home and instantly fell for him. Their night together became her first experience with another man's cock, delivering profound shock not only to her body but also to her heart. Even after returning home, the physical sensations and lingering aftereffects refused to fade, leaving her unable to believe that this affair was truly over. Taking the initiative to contact him again, Saryu seeks to build a new relationship—what will become of her fate?