The priest of death will do his job

Priest of death is a Class in the World System that is responsible for appeasing malice that lingers on the earth after a creature of the System - be that a monster or a member of intelligent races - dies while harboring strong negative feelings.
Zorey is a bright twelve-year-old human boy with the ambition to marry one of his village's guard - an older girl, Vernlily, with a bound guardian knight Class.
When Zorey leaves the village so he can get registered in the World System in the Temple in the city so he can receive a Class...
...that he hopes would allow him to support Vernlily the best way possible...
...he could never even dream of how their fates would become intertwined forever.

But not exactly in a way he hoped for.