After living separately from her husband by herself, her only son Ken's behavior began to worsen and Hako was hurting her chest. He was dissatisfied with everything, and Ken's quick-to-fight character was smoked by his classmates and eventually caused a "revolt". Ken, betrayed by his friends who he believed in, was so shocked that he moved to his father's place of appointment. But the tragedy didn’t end there, and when Hako was alone at home, her chime rang.