Board Thread:Naruto Discussions/@comment-3568954-20140625232535/@comment-3568954-20140626144409

Elveonora wrote: The upgrade crackpot theory has no basis in the manga either.

the fact is that my theory about him developing his eye is the logical assumption since it is a fact that the Rinnegan is superior to the sharingan and its also a fact that she had the sharingan not the Rinnegan if she did hagoromo would have said so

either that or he was simply born with an the Rinnegan and never had to train it