Board Thread:Theories and Speculation/@comment-26894845-20151212061943/@comment-25122992-20151212125416

TheOneWhoLovesNaruto wrote: If rinnigan requires both Indra and Ashura’s chakra, then if Kakashi or Danzo or even Itachi had had some sort of say blood transfusion from Naruto could they have developed the rinnegan? They have the sharingan which is directly Indra's chakra, especially in the case of Itachi. I understand that it might have taken much more time than it did for Madara since he was the actual reincarnation, but if they could survive for the time it would take, would it be possible? I don't think so. Yes, possibly, every Sharingan contains a bit of Indra's chakra, but only his direct reincarnate has suitable chakra to develop the Rinnegan cause his chakra is the closest one to Indra's chakra (although they're obviously not identical). For example: Obito had both MS and Hashi's cells (which made up the entire half of his body), both were perfectly under his control, yet nothing suggests he could've awakened the Rinnegan. That's why I think only reincarnate is able to accomplish that, with the help of the opposite reincarnate's chakra.