[Reborn Background]
Former identity in the Immortal Realm: Ruler of the Central Domain of the Immortal Realm, the Nine Heavens, and wielder of the Law of Burning Heaven. He tried to stop the Heavenly Dao from turning all living beings into energy puppets, but was attacked by the Heavenly Dao and the other eight heavens. After his soul shattered, he fell into the Hokage world.
Circumstances of possession: During the Second Great Ninja War in Konoha Year 32, he inhabits the body of a three-year-old Uchiha child named Uchiha Xuan. The child's parents were killed by an Iwagakure shinobi using Dust Release: Detachment of the Primitive World Technique. As the child lay dying, his fierce will to survive awakened his Three-Tomoe Sharingan, which resonated through their bloodline with the soul of the Immortal Emperor.
Fused memories: He retains the Immortal Emperor's advanced understanding of the nature of energy, causality, and spatial laws, but has lost all his immortal power and the divine artifact, the Burning Heaven Sword. He must start from scratch and transform chakra into Xuan Qi.
