Test Area No. 0

AD 202X Bloody cracks tear apart the sky, abyssal energy pours into the earth, and everything becomes digital. The abyss game system is implanted in the retina of all living things, humans awaken supernatural powers, and animals and plants are transformed into zombies and mutant beasts. The earth has become a testing ground for the "Reaper" of high-dimensional civilization, known as "Test Area No. 0".