Emiko, who divorced her husband 15 years ago, raised Tatsuya single-handedly. Not wanting to make people feel sorry for her because she was from a motherless family, Emiko worked hard and Tatsuya was able to graduate from college. After graduating, Tatsuya got a job at a beverage manufacturer, and he lived a modest but happy life. Meanwhile, Emiko complained of physical discomfort. Tatsuya has been pushing himself too hard, so he invites Emiko to the hot springs to relax for a while.
