Global Cataclysm: From the Start, I’m an SSS-Rank Pathogen

The apocalypse descended, blood rain fell from the sky, order collapsed, and the strong ruled. To survive and reproduce, humanity built towering walls and established one City of Life after another. Over the following centuries, human technology continued to advance, and the Cities of Life were fortified again and again. When the apocalypse came once more, city after city fell. Where did humanity's future lie? To stay alive, Wei An embarked on a path of overcoming one obstacle after another. In this perilous, chaotic world, he gradually made the entire world tremble.