Just a thought...
So, it occurred to me randomly that if you look at it, it might be possible that Yugito is resurrected by Hidan's ritual. Of course, you might have to look further into what is happening in the canon for an explanation, but I think I can cover that too in this theory.
Remember when Yugito gets caught by Hidan and Kakuzu, and Hidan does his sacrifice/ritual thing? Well, wouldn't it be interesting if by doing his ritual and dying, Hidan inadvertently as part of dying in lieu of Yugito (even if it was his ritual to ask forgiveness from Jashin for not killing her outright, because he says that anything other than outright slaughter is a sin) that acts like Chiyo's death to save Gaara? So, wouldn't it be possible that after the Niibi is extracted, Yugito is brought back to life because of Hidan's previous ritual? I think it might be reasonable.
You might be wondering, 'okay, well that didn't happen because clearly we see Yugito is summoned back by the edo tensei', meaning she is dead/was dead after the extraction of her demon. Alright, I'll concede that point, but that doesn't exclude the possibility that she can re-enter the mortal realm on a permanent basis (like Itachi) by retroactive salvation because of Hidan's ritual. In other words, she died but now by edo tensei she is on earth and BAM ends up turning corporeal on a permanent basis because that sacrifice allows her to be alive for real. XD I dunno, just a thought. Maybe it is because I want her to be alive and Hidan too and Kakuzu as well. Speaking of which, if we take Hidan dying along with another person allowing them to be made live again after edo tensei, then kakuzu could be alive too because Hidan dies along with him in the forest when he eats his blood instead of Shikamaru's. Okay, that's a bit fanciful, but through the power of fans anything is explainable. Besides, Kishimoto does so many unbelievable random things this at least goes a bit further into being legit. *nod nod*
Wow, that came out a lot less coherently than I hoped. I blame it on the migraine.
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