"An eye that has used Izanagi will lose its light and never open again."
"However, the number of eyes and Izanagi's duration vary from person to person. This is an experimental subject Orochimaru created to forcibly extend its duration."
With Obito Uchiha's explanation, Hatake Kakashi and Uchiha Sasuke finally learned that this ninja technique was called Izanagi. It was actually an ultimate Genjutsu, one powerful enough to alter and distort reality.
Hatake Kakashi's eyes widened. Was this reasonable?
Even death could be reversed?
Was this still Genjutsu?
Just what secrets were hidden within the Sharingan?
Susanoo and Amaterasu had already been outrageous enough. It was obvious that they were special Dojutsu unique to the Sharingan, yet now Izanagi had appeared. It did not even require an evolved or mutated Sharingan; Three-Tomoe was enough.
That was way too unfair.
Although using it would cause permanent blindness, it could bring someone back from death. That was way too unfair.
Who could possibly compete with that in the future?
For a ninja, how important were a few extra lives? Danzo was proof enough. If he had not had those lives to burn while wearing down Uchiha Sasuke, he probably would have been strung up and beaten senseless long ago.
Uchiha Sasuke had simply Piloted Gundam without any regard for reason. Even a Wind Release expert like Danzo could not break through Uchiha Sasuke's Susanoo. It could be said that at the Kage Level, the Uchiha Clan's advantage had not diminished at all—it had instead grown even greater.
The Sharingan could Pilot Gundam, wield special Dojutsu, and even hypnotize and control Tailed Beasts. It was practically perfect.
Though both were Kage Level, Danzo had been beaten like a dog. If not for the wondrous effects of Izanagi, he would have been beaten to death