Animenewsnetwork - If there's one thing Naruto Shippūden makes clear, it's that long-running arcs aren't served well by frequent side stories wedged into the wrong places. Flashbacks and fillers can entertain, but they work best between arcs of the overall story. Even though there are smaller arcs within this overall larger one, the end is at hand, and the next arc will be a direct continuation of these events. Sticking multiple episodes of Obito's backstory right before the climax of his role as the ultimate villain is not working well. All the momentum built up over the rest of the Obito fight was lost several episodes ago.