Dark Old Demon

Roy's life was nothing special. The only thing commendable was the last few moments when he saved a mother and her child from a drunk driver.
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It's really an egg! Damn it, what kind of monster have I become? Did I fall into Hell instead of making it to Heaven??
Join Roy as he ventures through various worlds with the Custom Made Demon King System—a system that allows Roy to draw anything he can imagine and create it through exchanging souls!

Custom Made Demon King

The battle on the Plains of Despair ended very quickly.

The deaths of Andariel and Duriel caused the demon army under them to collapse. Under Julia and Benia's lead, Roy's army slaughtered all the way, killing these Hell demons until they fled in all directions.

When they returned, Roy had just finished extracting the divine sparks of Andariel and Duriel.

After losing their divine sparks, their souls experienced a large-scale decline. A divine spark would promote the growth of the soul, and after losing the divine spark, the soul would naturally decline. At this moment, the souls of Andariel and Duriel, who were imprisoned in Kanai's Cube, had degenerated to the level of ordinary demon lords.

Looking at these two souls, Roy frowned because they really surprised him. It felt like… two demon lords who had been forcibly promoted.

Could these not be the souls of Andariel and Duriel?

Battle Between Seers