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The Roost is a community of Tengu located in Xaquang Skyway. The land was granted to the Tengu during peace talks at the conclusion of the Tengu Wars. The quest, Raze the Roost, begins there as you arrive and discover that the Celestial Ministry is planning to demolish the location in favor of a refugee camp.
The Roost is easily identified by the tall, hexagonal, birdcage-like huts that house the Tengu. To reach the village, exit Senji's Corner and follow the path north.