After a series of brutal devil battles, Denji meets a seemingly kind and ordinary girl named Reze and quickly develops feelings for her. As the two grow closer, Denji gets a glimpse of the normal life he has always wanted. However, Reze is hiding dangerous secrets, and their relationship pulls them into a violent conflict involving powerful enemies, impossible choices, and the harsh realities of the world of devil hunters. The story blends action, romance, tragedy, and suspense while exploring Denji’s desire for love and freedom.