Xavier awakens to a world where supernatural power flows through multiple forms of existence: Hunters who track demons and cursed spirits, Espers with dormant attributes, Arcanists wielding Arcana through the Arcane Ascension, and Transcenders consuming divinity potions at the price of sanity. Born into a hunter family, Xavier and his brother Klaus each receive a system as the pathways reawaken, casting them into the Dark Era—the paradoxical age known as the Golden Age. Empowered by their systems, the brothers must battle resurgent evil gods and the fanatic cults that serve them, defending humanity from annihilation. In this perilous journey, churches and prophets, seers and oracles, angels and demons become shifting allies and enemies alike. A legendary tale of mystery, fantasy, mysticism, and Lovecraftian horror, their saga explores the shadowed intersection where belief shapes reality and salvation masks oblivion.