And what on Earth dictates that? This is exactly why I called it a coward's easy way out: Kill 'em all and you will never need to worry about anything again, in good and in bad - except that history books may call you a bloodthirsty monster and tyrant if you don't succeed perfectly with your scapegoat. Now it's pretty much up to Naruto and the very few others who know the truth to decide how it will all end. Will they have forged history books or will they face their past.