In the process of studying the meteorite, the ancestors of the four great families, who were still peasants at the beginning, accidentally aroused a certain mysterious power on the meteorite. All the people present at that time were infected by this power and gained various various abilities.

These people are the first generation of exorcists.

Apart from them, the power radiated in a very wide range, and some exorcists also appeared in many places, but their strength was as weak as ants compared to the ancestors of the four great families who were present at that time!