Global Mutation: Super Hardcore Survival Without System

[No system, no superpowers, no harem] Human nature is always greedy; the mysterious virus broke the peace of the past, and the infected people became bloodthirsty monsters. Their bodies were reshaped over time, their bones mutated, and their internal organs were exposed; For a time, the apocalypse came, biochemical changes occurred; the human social system collapsed, and the world entered an era of crisis; They have a simpler and easier-to-understand name that everyone knows - zombies. No one remembers who the first infected person was. They have become puppets of the virus, with only fresh flesh and red blood in their eyes. As the scale grew larger and larger, the scope of influence also grew, and different organizational forces benefited from it. Terror began to spread, even if the government still only said it was an ordinary riot. The power of the police is being suppressed at all levels, and the power of the army is being manipulated by the dark side. A bigger conspiracy has surfaced; no one can remain calm anymore. Civilized order is no longer there, and there will be endless chaos forever; welcome to a world of infinite change.