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

After staying for half a day, Mephisto left Roy's territory in satisfaction.

Yes, Mephisto had achieved his goal for this trip. Roy had agreed and planned to go to the Diablo world.

After Mephisto left, Julia and Benia came to Roy's sides and asked worriedly, "Darling, are you really planning to go to that world?"

"Why? Are you worried about me?" Roy raised Julia's chin and smiled.

He was still in his human form, so this smile was not sinister but rather gentle. It made Julia feel a little dazed for a moment, but she quickly returned to her senses. "Of course I'm worried. I keep feeling that Mephisto seems to be deceiving you!"

My Title?