White-haired shadow dancer, flowing shadow under the moonlight. She is a thief, a girl who hides between the light and darkness in the world of Elsovi. However, she has a lineage and identity that even she herself doesn't know about. A chaos twenty years ago overturned the most powerful empire on the continent. It is said that except for the queen who was kidnapped a few years ago, no one in the royal family survived. But the girl is not alone, because there is a sister who has the same fate as her, hiding her life experience, waiting to meet her.