A broken, misunderstood devil who spends his days manipulating the "chess pieces" before him into his own little play ride of demons doesn't even realize it himself that he's desperately waiting for someone to come along and fill the unidentified void in his heart. ...And then, a girl by the name of Ritsuka Tachibana gets called into the third library... She's just another chess piece, or course! Another toy for the devil to take hold of! But that pendant around her neck is somehow giving her a strength and advantage over all other humans... But that's not the only thing that makes here different from all the rest... Something inside her smile, her laugh, and her bright face is a warmth and comfort unlike anything the devil has experienced. ...Can he even open up to her despite his frightening aura and psychotic intentions? •Cover and characters do not belong to me; all credit goes to Rejet and the artist•