Seriously, the manga has NOT been very memorable for several years now. All I remember is that there was a sage dude who sealed the juuubi and split the bijuu, was the original possessor of the rennegan and he had a couple of disciples, one of whom was a prick and the other of whom was presumably not. Were they Uchiha and Senju? I honestly don't remember any more, nor do I much care.
On reflection, I DO remember something about the Sage being the first ninja, or somthing to that effect. That's about the best I can do.