Board Thread:Episode Discussions/@comment-1018594-20150402131426/@comment-1251315-20150403181219

ItachiWasAHero wrote: Not entirely true, they collabed with Kishi on the Shadow of the Anbu Arc for certain key parts. It's very rare, that's probably the only filler arc that had minor involvement from Kishi. Other than that, fillers are just random storylines that the directors make up themselves.