Some time before Cain and his companions arrived at the excavation site. Chaos was already unfolding at one of the long-stretching fortresses made of concrete and steel, standing between two towering hills.
It was a wall that defended the monster from reaching out to the people at the construction site. And of all the fortresses built by humans, this place was currently the worst, not because of its fragility, but because of the never-ending war.
Countless people stood atop the hills, wielding rifles or bows, raining fire upon a battlefield that showed no sign of calming down.
Humans clashed relentlessly with machines devoid of consciousness, creating a symphony of death, its trumpet of terror eroding the sanity of everyone present.
The virus beasts continued their assault on the defensive perimeter, showing no signs of stopping.
"Fall back! Fall back!"
