Kanae, who divorced 10 years ago, raised Kota single-handedly. Because he was from a fatherless family, he worked hard and made him go to college so that he would not feel sorry for him. Before he knew it, Kota had decided to graduate and had a job. As soon as he finished raising his children, he felt empty of his goals. At that time, Kota invited him to a hot spring trip, and he left for a graduation trip with Kanae and Kota alone.
