Raised as Heaven’s princess, she has always obeyed one sacred rule: never speak a devil’s name, for names bind souls. Loyal to her parents—the King and Queen of Heaven—she believes in order and purity without question, until her mother arranges her marriage to a man twenty years older for the sake of political balance. Trapped between duty and disgust, her faith in Heaven begins to fracture. Then a voice finds her—the devil’s son, unseen and patient—asking her to do the one forbidden thing: say