Dunggullecha!

Each generation, successors of the Four Deities are born to protect the barrier between the Heavenly Realm and the human world, wielding the powers of the Blue Dragon, Red Phoenix, White Tiger, and Black Tortoise. These chosen individuals gather at Doonggule, a traditional tea house in a small country, to train before ascending to heaven. Their purpose is to prevent the sacred spirits from causing chaos in the human world.