At certain points in the story, it seemed like Edo Tensei revived Shinobi in the state they were in at the time of death. Yet, characters like Hashirama, Madara, Kakuzu,etc. were brought back in state that were ALMOST close to their primes. How does the caster decide in which state to bring the body back, since the Reanimation deals only with souls, per se.

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