Kaede, who divorced her husband 15 years ago, raised Hiroaki on her own. She didn't want Hiroaki to feel sorry for her, so she worked hard to get her Hiroaki to go to college. Hiroaki graduated from university and got a job at a beverage manufacturer. Even after Hiroaki got a job, they continued to live together, humble but happy days continued. Meanwhile, Kaede complained of her physical condition. Hiroaki has been working hard for herself, so she wants her to rest for a while, so she invited Kaede to a hot spring trip.
