Once a soul attack is encountered, it is the most pure agony!
In the past, whenever the evil-turning-demon Nightmare Demon Ancestor saw those young lives devoured by it, watching them scream in agony, a kind of sadistic pleasure would rise in its heart.
Selfish, cold-blooded, and cruel, the Nightmare Demon Ancestor had lived for so many years that it had completely developed those insane habits, including this time, it had absolutely no intention of passing on its heritage, its purpose was just to have these humans offer up a stronger White Nightmare Demon to gain strength and life.
However, the always rampant Nightmare Demon Ancestor never imagined that, just as its life was coming to an end, it would be bitten by its own practice, devoured alive by a soul of a young White Nightmare Demon that had been separated by innumerable generations from its lineage.