Board Thread:Naruto Discussions/@comment-3965545-20170209160500/@comment-734582-20170211114218

QuakingStar wrote: Yup. He can also use Hiden jutsu's and knows the weaknesses of all jutsus.. or something like that. I think that refers specifically to Konoha's jutsu. Basically, it seems he studied the various clan jutsu in the village and figured out how (and why) they worked.