Naoya was always praised and told by others that he was a genius. He was severely spoiled as the youngest and most promising of the Naobito's children. He was conditioned to view himself as his father's successor and as a result, Naoya's arrogance grew to unbridled levels even as a small child. He looked down on all those he views as weaker than him, which is the vast majority of the people Naoya came across.