Luna has been raising Tatsuya on her own since her divorce. After taking in her father, she quit her job, and Tatsuya, who was a student at the time, supported them with part-time work. Even after graduation, he did not pursue further education but worked in a factory instead. As for his father, he was bedridden and also suffered from dementia, often running amok. Luna took Tatsuya and set off on a journey. She thought about living their lives over again…
