Board Thread:Theories and Speculation/@comment-3568954-20150530220024/@comment-25549954-20150601095016

Of course it does see it in the manga, he improved in chakra control, which means he is also physically fit cuz physical +spiritual, what is the benefit of training then I can't 100 % understand what the argument is about. It's Kinjutsu- life threatening for its use but not for Naruto.