Board Thread:Naruto Discussions/@comment-24165784-20151108230957/@comment-25122992-20151114210403

Personally, I think it's still possible for Izanagi to undo the effect of the Reaper Death Seal. I know it's hard to explain, but Izanagi's main task is to turn all the negative effects the user sustained into an illusion. Yes, Edo Tensei can't be used with the souls trapped inside Shinigami, yet this restriction was discovered only when an attemp to reanimate sealed soul actually happened, so we can't say for sure if this rule really applies to Izanagi. Morever, it's still a different technique with different mechanics. Edo Tensei just brings the soul of a certain individual back from the afterlife and puts it into new body with some additional benefits and drawbacks, but it doesn't make so as if their death has never happened (which is rather the case of the Rinne Tensei), that's why reanimations are often called the walking dead - they are forcefully bound to their unnatural vessel, and when the technique is released, their soul is released too, and it comes back to the Pure Land, leaving the said vessel. As I already said, Izanagi makes it as if the death of the user has never occured, thus making it as if their soul has never left the body, wherever it had previously gone. In turn, this effect is considered as natural cause the soul doesn't leave the body when Izanagi is turned off. The reason - actually thanks to this justu there was no user's death at all.