This is a novel about a former human who becomes a demon because of a game. He lives his life as a demon from the Abyss, crossing into other worlds. (There will be different systems in use, different plots, and different powers. Expect cultivation systems, game systems, magic systems, and much more.)
His main objective is to destroy and cause chaos throughout the multiverse. This novel also uses a ranking system that affects both anime and comic universes.
Void becomes a Primordial Demon and, step by step, changes the views of all races about demons. Demons are not weak; demons are beings of pure chaos.
Note that the MC is cruel and indifferent to life. This is a dark novel, so don't expect a Son of Destiny. In fact, Void isn't a villain...he is far, far crueler.
Do not read if you are weak-minded.