From Gangster to Supreme Demon

Zhou Yuan traveled to a gang disciple, and the gang was destroyed at the beginning. Fortunately, there was a system around him. At the end of the dynasty, the world is about to collapse, and all kinds of monsters and monsters appear. Under the devil's cave, endless demonic energy rolled. He took a sharp breath and turned into a glutton, swallowing it up. "Come on, let me see your limits..."