Board Thread:Theories and Speculation/@comment-3568954-20160718112245/@comment-734582-20160719103323

BeyondRed wrote: It's unfortunate, because Hidan maintaining his immortality through ritualistic killing would've been a way better explanation than "he's slowly dying from lack of nutrition" when the man's been buried underground with no means of eating for months and yet apparently hasn't died by the war. It could simply be both. Although he can't die, his body still functions normally (e.g. he feels pain) so it stands to reason he needs food. It's not clear how much killing he would need to maintain his immortality, but he's pretty reckless in combat yet can fulfill his apparent requirements with such a single kill.

It's also not clear if his killings refreshes his immortality or he accumulates extra years. In the latter case, he may still have enough immortality juice after eradicating the Fire Temple to die of starvation before his immortality stops.

Lastly, it's not clear what Jashin exactly is, but it refers to a god. We've already seen the Uzumaki bind a Shinigami, a god of death (or so it seems). We've seen Nagato beckon the King of Hell which has similar powers (whereas the Shinigami trades a soul to take a soul, the King of Hell trades a life to give a life). It's possible Jashin is a third, similar creature which grants immortality as long as lives are taken.