So I’m the type who doesn’t like to write long threads so I’ll make it short. As we know back in Wano Oda acknowledged that Kaido can’t be left alive otherwise he would come back to Wano to kill its citizens as well as had Luffy pretty much kill him so this should mean by eos Luffy would go on to kill Akainu by punching him into the bottom of the sea floor only to die cuz he can’t be left alone otherwise will come back for revenge.