Tsubaki, who divorced 10 years ago, raised Kota single-handedly. Because he is a single parent, he worked hard to avoid making him feel sorry for him, and before he knew it, Kota was old enough to get a job offer in the printing industry. After raising his children, he felt relieved, but he lost his purpose in life. When he was feeling empty, he was invited by Kota to take a break from work and relax on a hot spring trip. The two headed for the hot springs.
