Originally posted by: w455up
When reading chapter 153, when Jiraiya teaches Naruto how to focus his concentration using the piece of paper, then walks off to gather info, he says to himself that Naruto could potentially become the 4th master of the jutsu. Now, we already know that Jiraiya and the 4th have mastered it. Then who is the 3rd person to master it?
It seems weird for Kakashi to know, since it is most likely he would use it instead of chidori, especially vs. Zabuza when the speed and precision didn't matter since Zabuza was held down by his dogs. It might have been the 3rd, especially since he was known as "the Professor" and knew every jutsu in the village. But why didn't he use it vs. Orochimaru, especially if he wanted to kill him? One good hit, and BOOOM! Bye bye Orochimaru.
And pure utter speculation, maybe it was Kakashi's friend Obito, and thus being unable to copy it because he can't simply copy chakra control, he developed chidori to try to mimic it?
Post your theories here!