Board Thread:Naruto Discussions/@comment-24373005-20141013001519/@comment-25382671-20141013111808

@Seelentau & @Elveonora: So I find that both of your reasoning make sense... and ultimately, we can't actually be sure as to 'what' was the main source for Sasuke's Rinnegan and Naruto's TSB at this time, is that right?

So Sasuke's could be either because of Hashirama's cells that were given to him by Kabuto's healing or by Hagoromo's yin chakra infusion. In the same way that Naruto's TSB are the result of either Obito's "healing" or Hagoromo's yang chakra infusion.

Either way, I find it annoying that they can retain those abilities but Kakashi can't use(not sure about that, it might be that he's just too tired to reactivate it right now) Kamui.