Minori Kuwata is a full-time housewife who successfully overcame her first childbirth and was smoothly adjusting to motherhood. Though satisfied with her ordinary, comfortable daily life, she harbored one major frustration: after the baby was born, her husband grew distant toward her. With everything revolving around the child, she felt neglected and unfulfilled. One afternoon, the doorbell unexpectedly rang. Opening the door, she found a bright, youthful salesman standing there. This was the moment Minori's encounter with Aikawa began.