Board Thread:Theories and Speculation/@comment-27260817-20160203170532/@comment-10330822-20160203222339

The real question is why does the Six Paths Sage Mode in the Gaiden look differently than the Six Paths Sage Mode in Boruto the Movie, especially since his is wearing the exact same outfit, Hokage cloak and all.

Naruto seems to develop a black undershirt under his cloak when his actual jacket is opened, i.e. during the war and during the battle with Momoshiki. The exception being when he enters Kurama Mode.

My only guess is along the lines listed above. The reason Naruto doesn't have a black undershirt at first during his fight with Momoshiki, is because he was using a combination of Nine-Tails' Chakra Mode and Six Paths Sage Mode, or perhaps Chakra Mode and Kurama Mode. However, during the fight with Momoshiki he was only using a fusion of his Nine-Tails' Chakra Mode. The only problem with that is the eye slit.

Honestly, I sort of feel like the animators don't care nearly as much about this as we do. Hence all the confusion. I was willing to accept as new "Tailed Beast Sage Mode" during the Last, because Kurama was whole again, but it's getting kind of stupid at this point with the lack of consistency. They need to either state he's using fusions of other forms, or keep it consistent, one or the other.