Despite being a doctor, Nao, who has a son, carries the past of having broken off her engagement with Ohshima. One day, Ohshima suddenly reappears as a salesman, stirring emotions within her. The moment she sees him—the man she nearly married three years ago—intense feelings surge inside her. The next day, Ohshima visits again, revealing he's been fired due to poor performance at work. Seeing him depressed, Nao gently moves closer and kisses him, reigniting their passionate connection. But their moment is witnessed by her stepson, leading to a new conflict.