Long ago, there was a monk named Myoue who could make everything he drew come to life. He lived quietly with his wife, Koto (a black rabbit in human form), and their three children, Yakushimaru, Kurama, and Yase. One day, the land's high priest judged that Myoue's paintings were causing too many issues for the residents and directed him to find a remedy. As a result, the family discreetly escaped to the Looking Glass City, an alternative reality created by Myoue. Everything was calm until Myoue and Koto abruptly departed. Their three children are left to care for the city, and Yakushimaru takes over Myoue's name and responsibilities. When they are stranded in this parallel universe, their concerns are exacerbated when a little girl, also named Koto, falls from the sky.