You have to walk from the NPC you got the quest at to the other NPC it tells you to go to. On your way walking there, the Slave Watchers will spawn one at a time to attack while your walking there.
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IGN: Angel Eyes
Build: Pure Bard
Guild: Freelance

Grace wrote:
First make yourself smile, then work on the rest of the world.
STATUS: Currently trying to figure out how to make myself smile.