Tyrant Yin Yang Upgrade

He holds the Zhuxian sword in his hand and the Pangu ax on his shoulder. Wearing Jiuxiao armor and supreme boots. My goal is to conquer all the worlds: "Become the strongest man in history. Who is dissatisfied?" Not convinced? Trample them all! Du Yuesheng, an otaku, came back through time with an unparalleled system. He upgraded his monsters and killed people, crushing all the worlds, destroying all those who disobeyed, and creating a monster legend. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.