I guess there had to be some downside to using the Kyuubi for Naruto. After 291 we now know (or at least can verify) that there is some backlash for the mode. We aslo know that it will "shorten his life span." I'm pretty sure this means Naruto's Demon Fox is going to have to be taken out of him sometime in the manga. To be honest, a Naruto without kyuubi is... a piece of junk ninja. And the whole chakra think around him was so cool too. I hope it doesn't come to taking kyuubi away but I think it will.
Well, but we all no he's not going ot be hokage so he has to die someway.