United States of America & Super AI 'Abyss'

United States, somewhere in the state of Georgia near what was once Atlanta City.

It had been almost a year since the world changed when the Soul Record arrived on Earth, and during that year the world's inhabitants changed along with the world. Everyone tried to adapt in the best way they could to survive, and humans were known to be a very adaptable species despite being physically weak.

At first, as for any human in the world, surviving amidst waves of zombies and rampaging mutant beasts had not been an easy task at all for American survivors. However, as the days turned into months and more and more powerful soul evolvers began to appear, the human bases began to become stronger and stronger; strong enough to shelter hundreds of thousands of humans and withstand waves of zombie attacks or mutant creatures whose numbers sometimes exceeded two or three million.