The question is not how, but when. It's taking forever. I stopped watching the anime because of all the fillers. I think it will end with cheap ass Naruto using the fox demon to battle Sasuke and win, Sasuke switches sides, fight together and kill Madara. I'm not following the manga, but I am caught up on some parts. I just don't know anymore. I used to love the anime, but after the battle with pain I started losing a large interest in it (except the battle with Sasuke and Danzo.)