He was a bird that lived in the forest with his doe companion, who was killed by the war. The lone surviving bird sacrificed everything for a chance to protect the forest.
Reincarnated with the help of Guiguzi, he lost his wings, eyes, and memories. Trapped in a human body, his bird spirit desired freedom, until Donghuang reforged his wings and he became Cirrus the Seer.
He has been looking for his identity and freedom ever since, and a sliver of memory awakened during his quest.