Prophecy

Twin Blades. Black and white. Yen Yang. Life and death. Train them. You must find the boy with jet black hair and a soul of good possessed by power. Find the girl with sand blond hair and a soul of evil possessed by light. Find the twins, find the blades.

Meaning

The two blades are the blades from Legend of Akuryo by turquoiseinsanity.

Black and white, Yen Yang, Life and death: the colors and meaning of the Yen Yang.

You must find the boy with jet black hair and a soul of good possessed by power: Sensei Wu must find Sam, the wind master.

Find the girl with sand blond hair and a soul of evil possessed by light. Find the twins, find the blades: Sensei Wu must find Clair, the air master.