The Guard Corps: The Zombie Era

[No System, no cultivation, from fighting through a zombie-infested city to a world war]

“When faced with natural disasters, humanity often stands united. But what about disasters caused by people?”

An accidental incident caused a large-scale outbreak of the zombie virus in City A. However, thanks to military intervention, the situation remained somewhat under control.

Though progress was slow, the tide of war had been steadily turning in humanity's favor. Just as they were about to capture the villains' headquarters, assault team leader Qiu Huan suddenly realized that the true apocalypse had only just begun.

A major mid-story twist. Two protagonists in the early story. No harem, and the protagonist isn't a saint. He gradually improves under the guidance of his superior. No System, no cultivation. A growth-focused story with advancing plot and technological upgrades.