|
Ok, honestly, nobody ever thought the multi-tailed beasts are like a virus? A chakra virus that is. They are pure chakra but need a material host to manifest in the material world. Without one, they don't die, in the same way that energy is never lost but simply turned into another form of energy. So, if the host dies, they are disolved until summoned again into another body. A method that is apparantly very rare and hard, since the Akatsuki never tried to kill the hosts and then simply summon the monster anew.
|