Pack Dynamic

The demon world is different from the human realm. Shocker. Despite being under the control of a personified flame, unless he traps you in his flames, it's not hot. Warm. But not the boiling pits of hell most people would expect. For the most part, the demon realm is an empty mountainous void. Except for Gwi-ma's place, and dozens upon dozens of overpopulated, rundown towns. Gwi-ma claims there's no need to maintain them, as soon they'll be inhabiting the human's realm. That isn't the worst part. The hardest part isn't actually living there, it's the adjustment period. Not to the environment, or the constant, insatiable feeling of hunger. It's the instincts.
Demons are...different from humans. In more ways than the clear ,visual differences. Instinctually, they're pack animals. All of demon society is technically one large pack under Gwi-ma control, but can choose to form more intimate, smaller packs. These are usually formed from leaving a mark on the members of the pack's neck. These marks will scar, leaving white bite marks on a demon's neck, symbolising their place within a pack. These bonds, while marked physically, are spiritual, and can be severed. If done so, the white scars will darken into the same deep purple colour of a demon's patterns. This knowledge is innate within demons, even those who become demons through Gwi-ma manipulation.