The Shinigami created by the sealing technique Dead Demon Consuming Seal intercepted souls that should have gone to the Pure Land and even used them in conflicts within the Shinobi World.
No matter how one looked at it, that was poaching from the Pure Land. The Uzumaki Clan's extermination was truly deserved by heaven's justice. This was far more egregious than One's Own Life Reincarnation's exchange of one life for another, or Impure World Reincarnation's temporary borrowing.
"So, my conclusion is that Yin-Yang Release itself was a contingency left behind by the Sage of Six Paths. One must always leave some room for possibility; one cannot block off every path completely. Even the founder of eternal peace and order understood that stagnant water would lead to no good outcome. If Kaguya Otsutsuki broke free of her seal, she would need the chakra reincarnations of Asura and Indra to use Yin-Yang Release against her."
"Wouldn't that cut off any ordinary path to mastering Yin-Yang Release? Chiyo died outright after using One's Own Life Reincarnation, and the Uzumaki Clan that developed Dead Demon Consuming Seal was wiped out. If even these opportunistic methods won't work, what are we supposed to do?"
Gongzhi smiled.
"Now that we know the underlying principles, putting it into practice is a little easier than imagined. Let's return to the original question. In the Shinobi World, the forms life took were far too ambiguous, to the point that the boundary between ** and the soul was unclear. Chakra could temporarily alter them, or even cause permanent changes. Haven't we discussed before why the condition of an Impure World body was always so difficult to determine? Because there were simply too many influences. Most Impure World bodies retained the appearance they had at the moment of death. At the