honestly he didnt betray us, its just that hes only running out of ideas thats all (no new-real characters, no new conflict). i mean to use edo tensei for the nth time!!! whewww! must be hard on the 1st and 2nd hokage being played upon while they are supposed to be resting in peace. a writer or author may revive one or two crucial characters but to make the idea of reviving and having zombie ninjas a main thing in the plot - well that is close to re-inventing your title to "naruto: the zombie ninja chronicles". you use and stretch one conflict or aspect too much in the story gives you a redundant if not boring part on the saga.