In 2083, an unexpected comet struck Earth. Its immense, unknown energy destabilized space, and monsters surged forth like a tide, driving the prosperous human world to the brink of destruction. Yet as the old order collapsed, new individuals with special abilities appeared in the shattered world. They were called parasites. They were human, and yet not human.
By 2213, the crisis had passed. Though many places remained dangerous, the rebuilding and development of civilization had once again become the world's focus. But the scars left by the cataclysm were far from healed.
