One day, Quon Alfein, a young boy from the countryside, is attacked by a being called a "Hexenbiest. Then Alpina, a girl who claims to be the Devil, appears and makes a contract with him in exchange for time. As he follows her orders and continues his journey, he becomes entangled in a conspiracy that transcends the barriers between races. *This novel has been translated from Japanese into English using DeepL. So, some sentences are some wrong. Sorry.