From the Start, the Virus Infection Works for Me

(Also known as: Apocalypse: I Was Infected with the Virus in Advance from the Start)

Humanity’s excessive development has left Earth severely polluted. In 3076, a mysterious virus breaks out on Earth and spreads through the respiratory tract. Those infected turn into zombies, and some even become mutant zombies capable of flying through the sky and burrowing underground. These zombies are known as Rampagers...