Doomsday Purgatory Ceremony

Since the Cataclysm, seven types of purgatory creatures have appeared on human lands. Creatures from an unknown world call themselves monsters. Their body structure and physical laws are very different from those of the earth. After completely destroying human resistance, they occupied large tracts of land, but did not launch further attacks on the remaining humans. However, something is quietly changing. Magic energy poured into the earth from the void. Normal animals undergo a large number of mutations, the waters become polluted, and sometimes mindless monsters pass by human cities and destroy vast tracts of land.