Ten years ago, Renmi divorced her husband and raised Tatsuaki on her own. Before she knew it, Tatsuaki was about to graduate from university and had secured a job in the printing industry. With child-rearing seemingly over, she felt an emptiness in her heart, wondering what she should live for now… While feeling lonely, Tatsuaki invited her on a hot spring trip. He said he wanted her to take a break from work and relax. The two set off towards the hot spring town.
