Nether World

"A cataclysmic event has destroyed 80% of the human population, and the world has fallen under the dictatorship of the Illuminati, a global government that rules with an iron fist and is in pact with otherworldly sinister forces and demonic entities. In this chaotic, disaster-ridden world, a brutal war rages between the Illuminati and resisting forces, and humanity's very survival is at risk."