After a century of uneasy peace, the ancient balance between the human realm and the Netherworld begins to collapse. At the heart of this collapse lies a forbidden truth: the world is a shared realm between two ancient rulers—one human, one demonic—both born from the same cosmic essence.
These two lords, one rising in the form of Arsh, a tactician king enhanced by AI and human resilience, and the other awakening through Rose, his half-demon sister and the chosen vessel of the Demon Lord, are fated to determine the future of both worlds.
With humanity caught in fear and politics, and the demon world uniting under chaotic sin-commanders like Greed and Gluttony, the final war is not just about survival—but about deciding which reality deserves to exist.