Rebirth in the End of the World and Become the Demon King in the Fourth Life

"Again, that's it." Cao Yuanxiu looked at the huge mutated monster in front of him that was taller than the city wall, knowing that today was the day he died. However, he showed neither an expression of fear nor relief, but an expression of extreme pain, saying in his heart that he had really... Had enough of this doomsday world.