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 seeing Lilith open World Gates and summon these clones, Roy had already understood what she wanted to do.

These 666 clones would fuse together again with the help of the Red Sea Egg! At that time, the original Lilith would reappear!

This was also why Lilith had expanded the Red Sea Egg so much. Six hundred and sixty-six individuals needed the Red Sea Egg to have a large space. But Roy was a little puzzled now. Did the fusion ritual require 666 clones to complete, or was it possible to have more or less?

Perhaps this number has some special meaning…

Fusion Begins