Board Thread:Theories and Speculation/@comment-28323245-20160902000709/@comment-27924662-20160902003653

I think so about a week and about 2 days once he got shadow clone idea for rasenshuriken.(mind you he did all that training without using kurama's chakra) But after sage mode mastery and Tailed beast mode mastery I doubt that it would even take him 3 days to master all 5 nature transformation.