Board Thread:Boruto Discussions/@comment-1018594-20161222205643/@comment-1512913-20161230111359

I wonder how the form is described in the novel.

The tailed beasts being in any way related to six paths senjutsu is only mentioned in a novel I believe and they are not canon as of now. The databook states Naruto got six paths sage mode from Hagoromo, no mention of tailed beasts. Another way to get six paths senjutsu is to become the ten tails jonchuuriki