Принадлежащий:Rui single-handedly raised Tatsuya and sent him to university, and before he knew it, he was about to graduate from university and had even been offered a job in the real estate industry. This is the end of raising children. Thinking of this, she felt like a gaping hole had been left in her heart. When spring comes, Tatsuya ends up living alone in Tokyo. When he was feeling lonely, he was invited to a hot spring trip by Tatsuya. Rui and Tatsuya say, ``I want to go on a graduation trip with my mom who put me through college. They set off on a graduation trip just the two of them...