The Last Of The Sage
Tsunade is pretty much dead, if she isn't dead.
By "Sage" I mean "Rikodou Sennin" ( Sage of the Six Paths )
So as of now the situation in the war is mainly Madara,Obito and Juubi VS Naruto and the Allied Forces. While Sasuke is somewhere else, unknown. Tsunade and the Kage is pretty much dead and I bet that Tsunade will die, if she hasn't already. So as of right now 3 of 4 of the Rikodou Sennin's heirs that are left are on the battlefield facing each other, if Sasuke joins the battle then all 4 will be gathered there.
We all know that Naruto said to Sasuke the last time they saw each other that Naruto wouldn't become the Hero who saved the leaf and killed Sasuke, nor would he lose to Sasuke and be known as a loser. Naruto said that Sasuke wouuld die, but that he himself would die there at the battlefield right next to him. In other words Naruto said he would die, now he never said specifically that he would kill Sasuke. So in other words they can just both die on the battlefield when they are fighting with each other or against each other.
If Sasuke were to join the battle against Madara, Obito and Juubi then I think ( and bet ) that he would help out Naruto, for his own reasons ofcourse. If that happens then the 4 last heirs of the Sage will be on the battle facing each other in a 2 VS 2 battle. My theory builds on that they will all 4 die in the battle and end the long line of the Sage Family. The reason why this would make sense in some eyes are because Kishi early killed of the Uchiha, Senju and Uzumaki only leaving some left.
Now he might have done that because he wanted Sasuke and Naruto to be the last of the Sage, or so that when they fought the line of the Sage's family would die. Now that is my theory, I know its not the most stable or accurate one, but it is still a theory non-the-less!
Share your thoughts on the matter!