Apocalypse: I Became a Girl

No one knew what had happened, and no one knew why this disaster had struck... Dark clouds of doom loomed over the people of Nors. Countless walking corpses and mutants poured into their cities, and what followed was the collapse of Nors. Countless people became one of them or their food. The people of Nors fell into despair... Yet even then, the human survivors managed to stay alive. At that moment, the world was irradiated by energy levels beyond its limits, and that too became sustenance for those creatures... The world turned into a vast yellow desert. Where could the people of Nors go from here?