C24 Evil cloud

Moral grievances were a type of injustice, their full name ought to be Sin of Moral Resentment.

Simply put, it was a grievance caused by the people who were buried in a place filled with resentment.

According to the records of 'Yun Sou', this kind of injustice had never appeared in history. Although it was not the most powerful one, it was still the rarest.

"Resentment is born from the heart