Re: Fate of Hidan
it depends on just how "immortal" Hidan is. We know his head alone can keep living, for how long though we don't know. But if it was indeed for eternity then he's gonna suffer for all of existence buried under a pile of rocks.
of course it also depends on how much the Akatsuki wants Hidan with them, because they could just as well dig him up and give him a new body