Board Thread:Theories and Speculation/@comment-3001903-20151205022433/@comment-4912646-20151206063748

I still wonder about whether Obito taught the Rinnegan powers to Nagato or he simply discovered them on his own over the years. Obito claims he's the one who told Yahiko to found Akatsuki, unbeknownst to Konan, making it reasonable to assume he could have also trained Nagato in secret sometime before the confrontation with Hanzō. Yet when we actually saw Obito's flashback the orphans appear to have already started their organization and there's no indication Obito had anything to do with it. Doesn't help that Black Zetsu later claims he was the one to tell Obito to tell Yahiko to form Akatsuki.