Only a single town can be called as such in the entire demon world. is the Demon Capital, Xaos.
The entire populace has inherited the blood of the First Demon Lord.
It’s not unusual to encounter people of other races who have migrated here as the capital accepts anyone, regardless of race. There are no average people here. There are even some bizarre freaks lurking about.
The Demon Lord of Xaos plotted to destroy the Humas and Gabranth. He seemed to think that only his race was suited to rule over a united Edea with their superior strength. So he tried to make a world solely for the Evila by eliminating the Humas and Gabranth.