Spirit entities have existed on the Xuanyi Continent since the beginning of the world. Humans appeared later, and spellcasters have suffered greatly at the hands of these spirits.
More than three thousand years ago, a man named Cangwu founded the Ritualist sect. It is said that Cangwu reached an agreement with the Netherworld Ghost Clan, agreeing to deal with the spirits left behind in the mortal world. In return, the Ghost Clan taught the Ritualists techniques for fighting spirits and allowed them to refine some spirits into ghost servants. However, after death, the Ritualists would have to serve the Netherworld for three hundred years.
A thousand years later, news spread across Beiyue that a mermaid maiden had been reincarnated. Spellcasters flooded into Yuncheng, and Ying Su was among them. Thus began her life as a spellcaster...
