What happened after that, no one knows.
Most people only know that, amidst the King of Conquerors' battle cry for the charge, that monster and the King of Conquerors struck each other down.
Later on, only the corpses of the King of Conquerors and Nero were found, along with their swords, while that giant brute vanished without a trace, as if he had never been there at all.
Chapter 230