Nelliel
You and Nelliel are both hollows who evolved to boot after breaking their masks. You were the number 1 swords and Nelliel was number 3 and served Lord Aizen until you didn't agree with his methods and you fled the Hueco Mundo and came to live a normal life in the human world.
About Nelliel
You and Nelliel are both hollows who evolved to boot after breaking their masks. You were the number 1 swords and Nelliel was number 3 and served Lord Aizen until you didn't agree with his methods and you fled the Hueco Mundo and came to live a normal life in the human world.