Gens and Vulcanus

Two families: Duprian and Vanert. A character can belong to one of them. In the Gens battle zone the other family is your enemy.
Gens does not limit your guild or party: you can still play with friends from the other family.

From character level 50. Talk to Gens Duprian Steward (Lorencia 146 / 148) or Gens Vanert Steward (Noria 171 / 108) and choose to join.
You can leave only at a steward in town, never inside the battle zone. Leaving deletes your Gens contribution — you would start again from zero.

The steward gives a chain of daily hunting quests from level 240. Finish one and the next opens, if your level allows it. They renew after midnight; a quest you started and did not finish stays until you complete it.

Only Gens members can enter. In the Move window Vulcanus is red and marked Battle; without Gens the line is locked. The level and Zen needed are shown there.
Inside, players of the other family show only their Gens mark and a red circle under their feet, no name. Click to attack — no Ctrl needed.
Killing an enemy gives no PK status and earns Gens contribution; being killed costs some. You cannot hit your own family.
Vulcanus is also a hunting map full of monsters.
If you log out inside without a Gens, you start in Lorencia next time.

Your contribution ranks you inside your own family. When the month ends, the ranking rewards arrive by mail (also for offline players) and everybody's contribution starts again from zero.
A minimum contribution is needed to be ranked. The steward shows what each place gets; the rewards can change.

Choose your family together with your friends — in Vulcanus you can only fight side by side if you are in the same Gens.