The Wedding

Ning went on to help the demons revert back their body to a human forms again. They decided to not remain as demons, mostly so they could not be trapped in the icy hell forever.

The process of sending mana through their body and slowly pushing out the magicules would take a lot of time, at least a few years or so, so Ning let them get settled in for now.

There were two ways for him to help them get rid of the magicules in their body.

The first was the method Ning used to help Hyesi. That was to have him absorb mana from a mana stone and circulate it throughout his body while trying to push it to every part of his body, including the wings, horns, and tails. 

Even the red skins resulted from magicules, so he had to push it there too.

Ning could not use that method with these demons. Given the millions of them that were there, that was just an impossible task.