Everybody has secrets. Nobody in the world isn't hiding anything. Nobody in the world doesn't have a secret. Everyone has at least one secret that they kept hidden. Even if some had their secret revealed, they still have other secrets they kept. Even the Uzumaki Naruto, that everyone knew as the annoying loudmouth dead-last, has a secret. And not only one. Not two. And also not three secrets. Just how many secrets does he keep? And what are they? The title already gave you a clue of one of his secrets.