Yui, who was kidnapped by half breed vampires, the Mukami Brothers, Kou, Auza, Ruki, and Yuma, she was kidnapped with someone else who was also a human. Ruki is the oldest of the Mukami Brothers and Yui stays locked up in his room. Kou looks after the other one. Ruki walked into the living room, he sees them standing there, looking outside of the floor to ceiling windows that night.