Board Thread:Versus Debates/@comment-2245550-20160522071949/@comment-25122992-20160522181301

Actually, Sharingan copying ability doesn't make 5 natures mastering easier. To copy a natured technique, you must already possess the nature of it, otherwise you won't be able to do this. Copying ability surely extended Kakashi's arsenal of natured techniques, but him mastering all the 5 natures is the same feat as the one of Hiruzen.