Ten years ago, Reiko lost her husband in a traffic accident and raised her son Tatsuya alone until he became an adult. After the child-rearing phase had settled down, she met a man named Fujimura through a friend's introduction. Reiko was drawn to Fujimura, who was sincere and kind. Considering remarriage, Reiko invited Tatsuya to join her on a hot spring trip to Yamanashi where Fujimura was.
