Yuruo Verrast was born in a noble family. She was assassinated when she was 5 years old. Therefore, her mother pushed her into the family's secret treasure "Mirror" and fell into the world of the second dimension. She survived as Yuko's adopted daughter, Yuruo Asagure. He has his mother's only relic "Chain of Rain" left on him, and the price for using it is. . .