Angels protect us from the escaped creatures of the Netherworld.Demons seek to destroy the balance and treaty between vampires and humans.One half-blood vampire is torn between the two worlds in this action-packed paranormal thriller. Introducing Koa Ryeo-won, a half-blood vampire with an enchanted sword and a membership to the most elite vampire castle in Europe. A vengeful demon threatens everything Koa has worked hard to protect. Not even Halston...