One's Own Life Reincarnation transformed the caster's Chakra into a corresponding soul based on the target's body, achieving the effect of resurrection----
Kotoamatsukami, on the other hand, worked by perfectly disguising the power of genjutsu as the target's mental energy, making them believe from the bottom of their heart that it had always been their own "thought"----
What if these two techniques were combined?
When One's Own Life Reincarnation converted Chakra, it could directly alter it according to the actual requirements, "resurrecting" a perfectly integrated, fine-tuned soul----
After hearing Wu Yu out, Tsunade pondered briefly and asked curiously, "But Kotoamatsukami is a Mangekyō Sharingan ocular technique. How could it be combined with Chiyo's One's Own Life Reincarnation?"
As for why they did not split it into two steps—first having Right Mysterious Chiyo "resurrect" Kimimaro, then having Right Mysterious Shisui use Kotoamatsukami—Tsunade understood that easily enough. Using Kotoamatsukami on a Kimimaro who had already come back to life carried the possibility that the genjutsu's effects would weaken over time, or even be undone later by someone else, such as Orochimaru.
But if he was already a brand-new Kimimaro at the moment of his "resurrection," then there would be no genjutsu involved in the first place. If he had never been placed under genjutsu, what was there to dispel?
Wu Yu smiled. "Kotoamatsukami is indeed a Mangekyō ocular technique, but at its core, it still follows the fundamental principles of ninjutsu. As long as its essence is completely deciphered, naturally, its core can be applied to other ninjutsu."
Tsunade teased, "I didn't know your understanding of ninjutsu had reached such heights."
Wu Yu waved at the empty air beside him.
Tsunade's smile gradually faded.
Was this brat really planning to borrow Mysterious Kaguya's power?
Tsunade had personally witnessed Mysterious Kaguya derive elementalization