But this business about a "sacrifice"...
It sounded ominous right off the bat.
The thought had only just crossed Tsunade's mind when she heard Uchiha Minamoto continue.
"...to revive the Fourth Hokage."
"What!?"
Tsunade could not help crying out.
The nearby members of the Analysis Division involuntarily looked their way.
Tsunade quickly quieted down and gave Uchiha Minamoto a look.
He understood immediately, activating his [Eternal Mangekyō Sharingan] and transporting them both into the [Kamui] dimension.
"So on and so forth... and that's how it works..."
Uchiha Minamoto delivered the relevant information about the [Reaper Death Seal], the [Shinigami Mask], [Impure World Reincarnation], and the rest to Tsunade in a "compressed package."
Tsunade rubbed her slightly throbbing temples and spoke with a complicated expression.
"You can actually bring the dead back to life..."
If Uchiha Minamoto could revive the Fourth Hokage, Minato Namikaze...
Then could he also revive the other Hokage? Or even other people?
Granduncle, Second Granduncle, and Nawaki...
"This doesn't really count as 'revival.'"
Uchiha Minamoto corrected her.
"Only the souls of the targets are summoned through [Impure World Reincarnation]. Their bodies died long ago.
"But as far as I know, there are actually ways to truly revive a dead person."
After thinking back for a moment, Tsunade suddenly asked a question.
"Do you mean... [Izanagi]?"
Tsunade had only just witnessed Uchiha Minamoto's public execution of Obito Uchiha.
And now their conversation happened to touch on the concept of "revival."
Naturally, Tsunade thought of Obito Uchiha's ability to revive himself multiple times-[Izanagi]!
Shimura Danzō had also used [Izanagi] to revive himself repeatedly.
"Uh... [Izanagi]?"
Uchiha Minamoto had not expected Tsunade to suddenly mention that ninjutsu. He spoke uncertainly.
"Although [Izanagi] can also achieve 'revival,' its 'revival mechanism' is different from what I was just thinking of.
"By 'revival,'