The World of Ice & Fire (mentioned)|
A Clash of Kings (mentioned)
A Storm of Swords (mentioned)
A Dance with Dragons (mentioned)
The legend of Azor Ahai states that Azor Ahai, during his third try to forge a sword to battle the darkness with, called Nissa Nissa to him after working on his sword for a hundred days and nights. To finish his sword, he drove it through Nissa Nissa's breast. Her blood, soul, strength, and courage went into the steel of the sword, creating Lightbringer. Following this sacrifice, Lightbringer was as warm as Nissa Nissa had been in life. Nissa Nissa's cry of anguish and ecstasy left a crack across the face of the moon.