Uchiha Yū merely shook his head at Orochimaru's solemn invitation, refusing the offer.
"Sensei, immortality isn't as wonderful as you imagine. In this world, the boundary between life and death is very blurred. There isn't only one method—experiments and body-stealing."
Uchiha Yū casually revealed a piece of information that slightly surprised Orochimaru. He wanted to know what kind of ability could keep someone alive forever, and asked expectantly:
"Does such an ability exist in the current shinobi world?"
He could sense the urgency in Orochimaru's heart. It was because he lamented the fragility of life that he researched ways to protect his own, so that he could keep living. This was Orochimaru's next goal. He would keep experimenting for it until he succeeded!
"Impure World Reincarnation!"
Uchiha Yū named a ninjutsu with which Orochimaru was no stranger. He had encountered it before, but had never conducted any related research.
It was a forbidden technique created by the Second Hokage, Tobirama. It could summon the dead back, but the technique itself carried enormous negative effects. Orochimaru had only studied it superficially at the time. It differed greatly from the immortal resurrection he had envisioned, so he had not pursued further research.
"Sensei can begin a new round of research based on the Second Hokage's work. The terrifying potential of Impure World Reincarnation goes far beyond its current effects. After all, Orochimaru-sensei's abilities alone are limited. If you summon scientists you consider capable and have them conduct tireless research, it will certainly speed up the pace of development."
He felt that reviving powerful people through ninjutsu was the wrong path. Those brought back would not be of much use, other than continuing to fight in wars and bringing endless slaughter.
That single remark enlightened Orochimaru. As a scientist, he understood one thing: