i think that 1. onoki 1st , then tsunade will kill him cus shes a senju and probably knows susanoo weakness etc. although at the cost of her death , then naruto maybe become hokage after war
Tsunade, Onoki, A.... All these people dieing make sense because Bee is going to be the Raikage, Naruto is going to be the Hokage, and Onoki just old as hell lol.
with no plot no jutsu they all die madra seems insanely powerful but because of plot no jutsu the only kage that will die are the ones that need to be replaced like possible a because bee i think will be the next raikage and tsunade so naruto can finally take over and also possible onooki ut jus cuz he old and looks like hes ready to die b4 the battle started who will replace him i dunno it all depends on who naruto makes a bond with in that village cuz it seems all of narutos bonds will end up being important ppl and that is why he will be able to bring peace cuz all the leaders of the world will trust and respect him