Crowley, the Hero-Emperor—humanity’s mightiest warrior, who vanquished the demon race and attained eternal youth through the fruit of the World Tree. Yet, at the pinnacle of his glory, he was slain by his closest friend, the archmage Raphael. Two hundred years later, he awakens—reincarnated as Faris, a slave to a ducal house. Even more astonishingly, his original body is not dead; it remains at the World Tree, continuing to battle the demons as the “Hero-Emperor.” Why was he killed? Why does his physical body continue to stand upon the battlefield? To uncover the truth behind these mysteries, Faris breaks free from his life as a slave and strikes a deal with the ducal family. The condition: he must become the butler and swordsmanship instructor to Rimul—a young noblewoman scorned as incompetent—and mold her into the family’s successor. All of this is to reach the summit of the World Tree and expose the truth of the betrayal from two centuries ago.