when a hero is reincarnated as a demon king
Once, Arven was humanity's strongest hero, a symbol of hope, a guardian of peace, and an exterminator of darkness. However, after the betrayal of those he protected, his life was taken on the holy battlefield. When he opened his eyes again, Arven had been reincarnated... not as a human, but as the new Demon King named Raelzar Valladolid, ruler of the world of darkness he had always hated. With the power of overwhelming demonic magic, burning memories of the past, and unresolved grudges, Arven faces a great dilemma: should he avenge the world that destroyed him, or create a new world from the ruins? In the midst of the conflict between light and darkness, Arven must choose to remain a monster in the eyes of humans, or prove that even demons can bring justice.