"Sure enough, the Spirit Transformation Technique isn't Living Corpse Reincarnation. Although I can occupy this body, I haven't truly changed bodies. I can still sense the existence of my original body."
"Even this specially made clone without a soul feels a slight rejection. Is that because of chakra?"
"Confirmed. The Spirit Transformation Technique should have a time limit, but if I increase the chakra carried by the soul body, the technique's duration will increase accordingly."
"What if the chakra runs out?"
Uchiha Ensei controlled his chakra consumption. Once it was depleted, he quickly sensed his original body calling his soul back, along with a faint discomfort coming from within the clone.
Then, two pulling forces appeared at once, as though demanding that Uchiha Ensei make his own choice.
But Uchiha Ensei could tell that if he remained in this body, although he could achieve something similar to body-snatching, the body would eventually begin rejecting his soul.
In the Ninja World, this phenomenon was difficult to describe.
But according to the memories of his previous life, this was clearly a case of the soul and flesh being incompatible. He just needed to find a way to increase the degree of fusion between soul and body.
Ignoring it would work too. He would only need to change bodies every few years.
The Spirit Transformation Technique plus some secret technique that devoured souls... that should be Living Corpse Reincarnation, right?
Uchiha Ensei guessed wildly without the slightest concern. It did not matter if he was wrong anyway.
After all, what he was doing now had already achieved an effect similar to Living Corpse Reincarnation. Moreover, he could withdraw at any time, and it would not harm his soul.
However, Uchiha Ensei had no reason to abandon his original body anytime soon. After trying it out, he returned to his original body.
Afterward, Uchiha Ensei used the Spirit Transformation Technique again and carefully analyzed the clone's data.
After moving his body around a little, Uchiha Ensei activated the Byakugan. Sure enough, veins bulged at the sides of his eyes.
That should confirm it. The reason he had been able to use the Byakugan without warning before was because the Byakugan within his body had borne the strain of activation.
And now...
Uchiha Ensei stared at his original body for a long while, then placed his palm on the Eight Trigrams Seal on his abdomen. He drew the Byakugan's ocular power from the seal and used it to nourish his eyes.
In the original story, the Tenseigan was the simplest path to power that Uchiha Ensei could imagine, one that he had the conditions to complete.
But unlike the Rinnegan, although the Tenseigan was immensely powerful and possessed a state similar to the Sage of Six Paths, as well as Truth-Seeking Orbs—
Fundamentally, the Tenseigan should be considered a half-finished product.
After Otsutsuki Toneri was defeated...
No, rather, after that Giant Byakugan was destroyed, the Tenseigan regressed back into the Byakugan. It did not remain permanently in that state like the Rinnegan.
Still, Uchiha Ensei only wanted power. Those hidden dangers were not important.
He had no intention of stopping there. His future enemies were powerful. At the very least, he needed strength equivalent to a Ten-Tails Jinchuriki before he could feel somewhat safe.
As for Kaguya Otsutsuki...
If Black Zetsu did not stab him through the heart, he probably would not so easily become Kaguya Otsutsuki's vessel, right?
His mind wandered through a mess of thoughts until a faint swelling sensation came from his eyes, snapping Uchiha Ensei back to his senses.
These Byakugan seemed to have begun evolving.
Over the next month, Uchiha Ensei waited for the Byakugan to evolve. But after that first twitch, the pace of evolution slowed.
"Clearly, Otsutsuki Toneri's Tenseigan evolved very quickly in the story. Is it a matter of talent, or is it because I lack the chakra of Hamura Otsutsuki's lineage?"
If it had been before, Uchiha Ensei might have needed to put in some effort. But now, it was much easier.
After releasing the Spirit Transformation Technique, Uchiha Ensei returned to his original body.
Glancing at the corpse on the ground, Uchiha Ensei raised his hand slightly. The body identical to his climbed up from the ground like an ordinary person.
Unlike those artificial humans, Uchiha Ensei had injected a great deal of his own chakra when cloning this body. Therefore, it did not possess the faint soul that every other clone had.
Though there was still a slight sense of discomfort, that should have been caused by the spiritual energy contained within chakra.
As for the method that allowed this body to stand, it came from the Tenseigan's puppet-control ability.
Uchiha Ensei did not understand why his original body had gained some new power when the clone's Tenseigan had only been awakened halfway.
Perhaps it was because the hundred thousand Byakugan were sealed within his body. His original self did not possess the Byakugan Kekkei Genkai, so he could not activate the power of those hundred thousand Byakugan and could only use them as a massive chakra reserve.
And now, the potential of those hundred thousand Byakugan had been developed?
Not bothering with such a trivial matter, Uchiha Ensei communicated with the three-meter-tall Little Ten-Tails behind him for a moment, then had the body he had cloned gradually merge into the Little Ten-Tails' body.
Next, Uchiha Ensei took out another pair of pure Byakugan and continued what he had been doing.
After finishing everything, joy and conflict intertwined in Uchiha Ensei's heart as he walked out of the laboratory.
After heading to the Cat Ninja Village and chatting with Cat Granny about recent intelligence, Uchiha Ensei asked for a map to Sunagakure. Then, carrying a giant scroll nearly half a person tall on his back, he left the Cat Ninja Village.
As for the Natural Energy research plan he had promised Chachamaru...
Next time... he would deal with it next time!
Besides, the place Uchiha Ensei was heading to this time was filled with dense Natural Energy anyway, so it was not really breaking his promise.
Uchiha Ensei traveled quickly. Since Sunagakure itself was hidden in a sparsely populated desert, he did not draw the attention of any White Zetsu.
That left him somewhat disappointed.
The White Zetsu he had captured before had nearly all been used up. Although he still had some samples left, White Zetsu did not truly count as living beings, and ordinary cloning techniques had no effect on White Zetsu Cells.
Therefore, Uchiha Ensei had been hoping to encounter a few White Zetsu to capture.
But it was fine. It was better that White Zetsu had not discovered his trail. The place Uchiha Ensei was going to was somewhere he did not want anyone to know the exact location of or his movements toward.
With the Byakugan's powerful observation ability, Uchiha Ensei soon found his final destination—Rōran.
Of course, it had now become ruins.
In fact, there were many such ruins in the Ninja World.
For example, the Empty Zone where the Ninja Cat Clan lived, the place where Yugito Nii was captured in the original story, and the location of that Gelel Stone were all types of ruins.
This showed that the Ninja World was capable of nurturing powerful civilizations.
Unfortunately, under the influence of chakra, an external power, these forces native to the world had become incredibly fragile and could be easily destroyed.
Though he felt somewhat emotional, Uchiha Ensei still advanced toward the Dragon Vein without hesitation.
Along the way, the Byakugan's penetrating vision allowed him to easily avoid traps, and he finally arrived before a Flying Raijin Kunai.
Beneath that Flying Raijin Kunai was the Dragon Vein Seal.
"I wonder whether this world still has that incident where Naruto Uzumaki traveled back in time."
Uchiha Ensei spoke with some emotion, then used his understanding of Sealing Jutsu to open a small gap in the Dragon Vein Seal.
The Dragon Vein's power was extremely formidable. A fully unleashed Dragon Vein could even travel through time and space, so Uchiha Ensei could not allow such a thing to lose control.
Taking down the giant scroll from his back, Uchiha Ensei released the Little Ten-Tails.
The huge lump of white matter immediately wriggled impatiently toward the Dragon Vein Seal, looking exactly like a mass of white slime.
"Stop!"
Seeing the Little Ten-Tails make such a move for the first time, Uchiha Ensei's heart stirred and he suddenly shouted.
Although he could sense the connection between them, as well as his authority over it—
Uchiha Ensei still wanted to test it and see whether it would disobey his will.
Sure enough, the moment Uchiha Ensei spoke, the Little Ten-Tails finally stopped wriggling.
Then, an eager thought was fed back to Uchiha Ensei. It wanted to absorb the power leaking from the Dragon Vein Seal.
"No!"
Uchiha Ensei refused decisively. Upon receiving the command, the Little Ten-Tails wriggled back to its original position at the same speed and remained completely still.
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