Board Thread:Naruto Novel Discussons/@comment-25319479-20150725151541/@comment-3279282-20150725152530

Na, not like that. The Katon, Doton, Suiton etc techniques come from the real world, where ninja used fire to escape => Katon (Fire Escape). These techniques were called tonjutsu (Escape Techniques). The same term is now used in the book. Usually, seishitsuhenka/nature transformation would've been used.