Seat of Last Demon

Qi was once the breath of life. Now it spreads death. Ten years ago, the Great Fracture tore open the sky. From the void beyond it came the Black Death. It is not magic. It is disease. A hyper-aggressive plague that binds to Qi and moves through touch, blood, and breath. A cough can doom a street. A shared room can wipe out a clan. The stronger a cultivator is, the faster it kills them. Their own Qi feeds the infection. Great Sects sealed their mountains and died behind quarantine arrays. Immortals fell first, their lungs hardening into black rot as their power turned inward. Louis, a medical student from Earth, awakens in this broken world as the Last Demon. He carries modern medical knowledge—and the Celestial Three-Ways Constitution. He is immune. The Black Death enters his body and fails. Through the forbidden art of Grave-Pulse Cultivation, he breaks the pathogen down and consumes it as fuel. Where others fear contact, Louis hunts it. To him, a locked-down city is not a grave. It is a feeding ground.