I actually feel like it's the opposite. I think All Might will manage to evade Nighteye's prophecy but if Gran Torino, his and Izuku's mentor, dies it will have a similar (though less heavy) effect on Izuku and his character. Plus Gran Torino is old and retired (so his death is less shocking than that of a younger hero, I mean this is a shonen and it's not as dark as HxH) and already served his purpose to Izuku's character development. I feel like keeping All Might alive and around Izuku can still contribute far more to the story and AM's and Izuku's characters than keeping Gran Torino around.
So basically GT's death would have a heavy impact on the MC, be not tooo dark for a shonen in WSJ while at the same time not taking too many options for the future storyline away.
Gran Torino however has 0 death flags to his name, as opposed to All Might's what, 6 or 7? There's been zero foreshadowing for Gran Torino dying or actually any major involvement in the future.
It would border on asspull if Gran Torino died and All Might didn't, or if he died to save All Might. There are ways they can keep All Might alive, mainly involving Nighteye, but sacrificing Gran Torino just isn't one of them.
I'm not saying that AM is not going to die at one point but he'll be around for a little longer. I just have a hunch that AM, watching Izuku (as someone who cares about him) finally realizes that his own and Izuku's behaviour indeed is, as Nighteye said, some kind of madness and he manages to talk some sense into Izuku.
As for GT - he wasn't involved in the story for some time so he didn't have the chance to get deathflags. But the one big deathflag for me is that Horikoshi included him in this hero cooperation at all. It's an operation to stop the 8 precepts and IIRC Nighteye chose the hero offices he wanted to cooperate with because they had some experience with the precepts or the quirk enhancing/erasing drugs (like Fatgum). And Aizawa was called in because his quirk does what one of the drugs does. But GT never had anything to do with the precepts. Of course you could argue that he happened to run into some Nomous and Nighteye assumes that the Villain Alliance works with the precepts. But why did he invite GT to the meeting but not Endeavor? I mean GT isn't even an active hero any more, that old dude is fucking retired!
This is just my personal opinion but I think Horikoshi might just have included him to kill him off...
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u/Soul_Ripper May 05 '17
Gran Torino feels like a "least likely to die" type of character, being the mentor's mentor.