Originally Posted by Scarecrow
i was under the impression that sasuke invented kirin, its a pretty original jutsu maybe inspired by Nikola Tesla (real life inventor) and we dont know any ninjas that use lightning attacks like that so we cant be sure, but u need to have: strong fire affinity and strong lightning affinity and then combine it. how many ninjas could do that? my opinion is sasuke is the creator of that jutsu.
about orochimarus methods of training, oro probably had plenty of sparing partners for sasuke, one of them was prob suigetsu, but sasuke wouldnt kill his oponents and then oro was like:"what? as u wish but then u fight with a handicap", and sasuke was like:" i dont care, i am above these clowns"
If he created it then it should not have been given a name in line with the mythology titles that are used by the Uchiha. If he DID create it entirely on his own then one must wonder why were we never shown its development or explicitly told "I created this"? If he DID create it then what did he learn from Orochimaru? Apparently not much.
No, the likelyhood falls in the other direction.