Now Devias is the capital of our continent. All NPC which you need, now are in this town. Devias - is the only one location, where you can get to the Blood Castle & Devil Square.
Only here you can buy a Chaos Castle Invitation, Angels and Large HP & Mana potions. Also here is Lahap, Trainer and Goblins for Refining stones and Harmony options clean
It is the main center for trading other player activity,
Here is a detailed map of the central part of the city and NPC coordinates