Iron Hunter Dark World

In the year 2000 on the Sky Planet, human beings were forced by nuclear war to go underground to avoid disaster. Two hundred years later, human beings began to slowly come out of the underground and return to the earth. But the first thing humans did when they returned to the ground was not to create human civilization, but to build high walls against those unknown and terrifying mutant monsters. Gunpowder, rifles, steel, human body modification, cell evolution, living metal... All weapons that can be used to kill those monsters are used by humans unscrupulously on themselves. Family affection, benevolence, love, philosophy, countless great human beings have pushed mankind into despair with their greatest ideas. Don't close your eyes, it's coming.