Souls were like seeds; after sowing them they would provide food.
Demons didn't know how to cultivate souls like devils, getting souls from other better races. That was why the demon army was made up of creatures of the lower class. Dretch was a kind of humanoid dog. They always liked to run around in a swarm and always had a powerful leader. They were afraid of powerful enemies but liked to bully weak ones. Finally, under the cruel law of survival of the fittest, these creatures gradually became stronger.
The Plain of Infinite Portals, as the first layer of the Abyss, was a place easily disturbed by the wars in Abyss.
This place was large.
