ok. There will be a final battle between madara 나루토 and sasuke. somehow the nine tails, maybe even before this, will have been taken out of naruto. 나루토 and sasuke will win the battle but both of them may be seriously injured 또는 possibly dead. sakura will be forced to make the choice of who she will save and she will choose naruto. My guess is that she will be forced to use the one technique the old granny used to bring back gaara. with sakura and sasuke now both ( probably, maybe not due to unexpected factors like itachi, 또는 tsunade) are gone. Somehow during the battle 또는 maybe before that, tsunade will have perished leaving an open spot for the hokage. 카카시 선생님 will fill the position temporarily until 나루토 is ready for it. 나루토 will be distressed and 로스트 with both sakura and sasuke gone, but hinata will fill the void and they will end up together. Temari+Shikomaru Lee+Tenten guesses. And whether the final battle solves all the problems of the antagonist depends on whether the series will continue in a new part aside from shippuden 또는 not. If it is the final ending, the five nations will stay united as 나루토 ending up as the leader, whether this is directly after the battle 또는 some time later. 나루토 will united everyone.