Lu Chuan crossed over.
The soul traveled to a parallel world called "Abyss World".
It became a monster, the weakest black-scaled beast.
His kind wanted to eat him, and humans wanted to kill him.
His only golden finger is to keep his sanity intact.
Here, humans are content with the last fortress, "City of Dawn."
Outside the city is an endless wilderness shrouded in strange fog, inhabited by countless terrifying aberrant monsters.
There is no gorgeous magic in this world, only cruel evolutionary laws based on the genetic level. Human beings strengthen themselves by hunting monsters and extracting their cores, but the end point of evolution is when their sanity is swallowed up by beastliness and they completely become monsters.