Fics like When in Doubt, Go to the Library

"I am Wan Shi Tong, He Who Knows Ten Thousand Things, and this is my library, my domain," he answered instead, "Who are you, mortal?" The boy hesitated but answered, "I... was Prince Zuko of the Fire Nation. My... the Fire Lord has banished me, with no recourse to return." aka Wan Shi Tong adopts Zuko AU

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