In the manga, Tobi stated that he could use the Human Path to steal a soul and store the soul in the King of Hell for later purposes.
Let's say Tobi takes Kakashi's soul and stores it in the King of Hell, would Kabuto still be able to use Edo Tensei to revive Kakashi even though his soul is stored and practically sealed in the King of Hell, or is the King of Hell equivalent to the Shinigami/Death God?:shrug:
Let's say Tobi takes Kakashi's soul and stores it in the King of Hell, would Kabuto still be able to use Edo Tensei to revive Kakashi even though his soul is stored and practically sealed in the King of Hell, or is the King of Hell equivalent to the Shinigami/Death God?:shrug: