Disaster-class

Creatures in the world were classified according to their level of danger, divided into five ranks from E to A.

Among dangerous creatures, ghosts formed from humans who died harboring resentment or intense obsessions made up a large portion.

The most elementary ghosts belonged to the lowest rank, E, and were academically referred to as the "Ghost Rookie Stage."

After passing the rookie stage, ghosts began to grow. They still displayed no special abilities, and were academically known as being in the "Ability Excavation Stage." At this point, a ghost's consciousness was basically intact, and it possessed ordinary abilities in various areas, posing a fatal threat to ordinary people.

At the next level, the ghost's core underwent a qualitative change, producing a unique, individualized ability and making it outstanding in one particular area. Generally speaking, only ghosts with "Excellent" potential or higher could reach the C rank—the "Personality Maturation Stage."

By constantly developing and perfecting their personalized abilities, they pushed those abilities to their absolute limits. Tu Tianchong, who had completely mastered death, had reached the B rank, commonly known as the "Perfected Form."

For a ghost with "Excellent" potential, reaching the "Perfected Form" generally meant that all its potential had been exhausted, leaving no room for further growth.

However, a ghost in the "Perfected Form" was already powerful enough to destroy ordinary towns and small urban districts.

Yet in the world's danger classification, there were beings that surpassed ghosts in the "Perfected Form." They were classified as the dangerous A rank, symbolizing the highest level of danger in the real world.

At present, fewer than thirty A-rank ghosts were known to exist worldwide. A small number had been controlled or sealed, such as the lake female ghost serving as a guardian outside the Confinement Building of the Dihua Ability