I Learned to Behead in the Mad God Era Mental Hospital

In this world, the only ones who are not afraid of divine pressure, the only ones who can touch the rules of gods, the only ones who can compete with gods with their mortal bodies, and even kill gods, are not the fully armed army, not the strong men who have practiced hard for hundreds of years, not the elites who have mastered the top technology, but a group of mentally ill patients who have been abandoned by the world and are defined as insane, deranged, and insane.