"The creature called human is an intelligent one, a resilient one , but it is also a greedy and vengeful one, hehehe....."
That may sound as a bad thing, but for Roy who had accidentally stepped into the demon realm and became a demon by that bittersweet chance, it was the best.

"Aye, another man's trash is really my treasure, and what a treasure that is." quietly muttered Roy as he absorbed the soul energy from a soul he had just gained from one of his customers. He slowly sunk his nonexistent fingers into the soul and a feeling of warmth enveloped him.

This will also be in RoyalRoad.