Gamabunta says Kusagakure existed during the Sage of Six Path's time.
First, A still has both his hands in the movie and Naruto knows Bee but when Naruto meets Bee, A had cut off his left hand already.Prison Riot: Naruto and Ryuzetsu start one to serve as a distraction so Naruto can get into Mui's lab.Prison Episode: The first time Naruto has been sent to jail.Perpetual Frowner: The fact that Mui actually does do a Slasher Smile, it's a hint that it's an imposter.Painful Transformation: Muku's transformation into the Satori involves grotesque body contortions and his face is veined out just before the transformation completes itself.Muku before he transforms is a Walking Shirtless Scene Fanservice: Naruto is shirtless quite a bit in this movie. When the rest of the Konoha ninja (and Killer Bee) are fighting Satori while Naruto gathers nature chakra to reenter Sage Mode, they all attack one or two at a time instead of making any effort to overwhelm his mind-reading by attacking from too many directions at once for him to dodge everything. Malevolent Masked Man: The four masked figures who work with Mui, presumably the leaders of the Hidden Grass.Naruto figures that Sage chakra is still usable. Loophole Abuse: Mui's jutsu stops ninja from using chakra.The fact that Muku stabs Mui so callously comes across as both ungrateful and major Kick the Dog moment. Mui being stabbed by Muku after sacrificing the latter to the box would be karmic, had the former revive the latter out of his guilt as a father. Kick the Dog: Muku stabbing Mui after the latter went through much effort to revive him.Naruto realizes, Maroi was very willing to let him die. Jerkass: Maroi is Bee's friend and was asked by him to protect Naruto.