Ryoko, who divorced her husband 10 years ago, raised Hironori single-handedly. In an effort not to make him feel pitiful, she desperately raised him, and as a result, Hironori graduated and secured a job. With child-rearing somewhat settled, she felt relieved, but on the other hand, she felt like her life had lost its purpose, leaving a hollow feeling in her heart. While embracing this loneliness, Hironori invited her on a hot spring trip. 'I want to go on a graduation trip with my mom who got me into college.' Ryoko and Hironori set off on their two-person graduation trip...
