Quote Originally Posted by masamuneehs
Buffalo: I thought the same thing, that Anon shouldn't have been able to use Kisame's sword, Yuura not be able to do Sharingan. But as Kakashi mentions about the Fireball jutsu, it's a trademark of the Uchiha clan and the one made by the "sacrifice" was the real deal. It makes me think that chakra has some genetic, along with physical and mental aspect to it, since putting Itachi's in Yuura's body gave him Sharingan.
It's a trademark, but that doesn't mean others can't use it. Maybe some bad examples, but Kakashi and Sarutobi could use them too. I think if Naruto trained in it he could do it too. As it was explained, you concentrate the chakra in your throat or mouth (whatever) and blow it out.