Board Thread:Fanon Canon 2/@comment-2001574-20140921163723/@comment-6003865-20140923042607

one, he entirely may get the rinnegan, it took madara a while to awaken it. The fact he hasn't yet doesn't actually mean anything.

Two, from what i can see, the sage put all of the tailed beast's chakra into naruto, as evidenced by him creating all the beasts within that spectral realm of his. Sasuke's stuff could have been all the sage's chakra instead.

Three, the rinnegan could not have evolved from the sharingan, it came first.

There have been exactly 3 rinnegans, since i don't really count kaguya's since it came from madara essentially, in the series. 1 of them was from the sage, who definitely did not get it from the sharingan. the other two were made by people who recreated his chakra. Since the only definitive thing is that it is stated that his chakra is needed, it is not unreasonable to assume that is what you need.

Four. Indra's line was known for it's obsession for power, Asura's line was not. It makes sense to warn them not to do it, as Asura's line would have no predisposition to do so.

Five. you mean this research that was conducted on the rinnegan they never had? they never actually obtained a sharingan outside someone's skull, let alone a rinnegan. How can they prove this? there is no dna to prove it with.