After remarrying, Asuka found herself wed to Mamoru, seeking happiness but instead enduring his violent abuse. Mamoru's son, Satoru, also suffered constant physical abuse, silently agonizing without anyone to turn to. One day, triggered by a minor incident, Mamoru flew into a rage and handcuffed Asuka's right hand to Satoru's left hand, ordering them to remain together at all times. From that moment on, they were forced to eat, sleep, and live side by side. As this stepmother and stepson shared the same torment, their emotional bond gradually deepened, forging an intimate connection through their mutual suffering.