Board Thread:Boruto Discussions/@comment-30168130-20170527042428/@comment-732150-20170529002833

No bs whatsoever. Call unintentionally then, Boruto still didn't actively mean to add nature transformation to the Rasengan, and Boruto himself at no point indicates he did. Also, nature transformation isn't necessarily harder to learn than shape transformation. Naruto learned Rasengan, which Kakashi considered the most advanced shape transformation, before nature transformation, and did it without the aid shadow clone to train faster. The fact Boruto added it unintentionally could also be a consequence of the fact Boruto can already do nature transformation, so whatever training he did on nature transformation already primed him in a way that he added a bit without the intent to do so.