Hyuga Yu carefully flipped through Tanuki Shigaraki's notes from beginning to end.
During this process, Tanuki, standing to the side, felt a strange and long-forgotten sense of trepidation. It was as if he were back in the Ninja Academy, about to submit an assignment to his teacher.
In a way, it truly was like that.
The theory had been pushed as far as it could go, but the reality of the technology suffered from a gap of at least three generations. He could only watch helplessly as the project he had spent years painstakingly researching was scrapped by Orochimaru, who claimed it was impossible to achieve at the current stage.
His position within Root was precarious, and his meetings with Lord Danzo were becoming fewer and farther between...
What Tanuki Shigaraki didn't say explicitly to Hyuga Yu was this:
Joining Root as a partner who shared secrets was naturally feasible. However, as the secrets one carried grew more numerous while one's own "value" failed to keep pace with the value of those secrets, then...
The more you knew, the faster you died!
Tanuki Shigaraki already had a premonition of this. Hashirama cells, the Sharingan, prosthetic limb transplantation, the Cursed Mandate of Heaven... he had already participated in far too many research projects that he shouldn't have.
At this moment, he was standing on the edge of a cliff, liable to be abandoned at any time.
If he wanted to live, he either had to rely on heaven's mercy or immediately produce newer, stronger, and more valuable research results...
This was Root.
Every shinobi who joined this place used their "value" to constantly race against death.
This silent anxiety lasted for a full hour and a half until Hyuga Yu finished the last page of the notes. He closed the notebook with both hands and slightly shut his eyes.
Tanuki Shigaraki looked at him with piercing eyes. "How is it?"
"We can give it a try," Hyuga Yu said, taking a deep breath and opening his eyes, lying through his teeth without a hint of hesitation.
"However, genetic molecular transplantation is impossible at this stage. Also, the technology regarding the Zero-Tails requires more detailed theoretical support. The principles behind the conversion of Dark Chakra must be completely demystified."
In this sentence, the first half was true, but the second half was purely Hyuga Yu's own "private goods" smuggled into the deal.
One point that needed to be clarified was that the Zero-Tails was not within the Hidden Leaf Village. There were only partial specimens of the Zero-Tails; the actual living Zero-Tails was in the hands of "Shinno," the leader of the Land of the Sky. The reason Shinno would attack the Leaf in the future was precisely to seize the technology the Leaf had researched for the Zero-Tails project—
Dark Chakra Conversion.
This was an application technology based on Zero-Tails cells, capable of converting the dark emotions in a person's heart into violent Dark Chakra.
Only with this technology could the living Zero-Tails be applied to the Sky Ninja's fortress, allowing the Ancor Vantian to fire laser cannons comparable to Tailed Beast Bombs.
Hyuga Yu also had his sights set on this technique.
Aside from the "dyeing" effect of Dark Chakra, which could mask the cyan chakra in his body, having this technique would also alleviate much of the embarrassment of running low on chakra during battle.
At this moment, hearing Hyuga Yu's words, Tanuki Shigaraki frowned slightly.
"At this stage... it's impossible?"
Hyuga Yu spoke frankly. "Chakra needles and Chakra Scalpels can perform surgery at the cellular level, but they cannot perform surgery at the molecular level."
"I need to develop a new jutsu to achieve microscopic control at the molecular level."
Tanuki Shigaraki asked in a heavy voice, "How long will it take?"
"About a month."
"Fine. I will wait for you for one month. Within that month, I will demystify the principles of the Zero-Tails."
Speaking to this point, Tanuki paused and narrowed his eyes.
"But if you can't do it..."
Hyuga Yu looked at him calmly, interrupting with a tone that was flat yet as decisive as a blade:
"I can."
Hearing this, Tanuki Shigaraki said nothing more. He only gave Hyuga Yu a deep look before plunging his head back into the messy laboratory.
The number of tasks piled up in Hyuga Yu's hands suddenly increased.
Under Furofuki's supervision as a medical ninja, he had to learn the three major A-rank medical ninjutsu: the Palm Sage Jutsu, the Chakra Scalpel, and the Healing Resuscitation Regeneration Technique. He also had to work in the Corpse Processing Squad, heartlessly using the lives of fellow villagers to refine his medical ninjutsu.
Secondly, he himself needed to master the Rasengan, the Wind Style: Rasengan, and develop the [Wind Style: Chakra Scalpel] based on them.
Finally, regarding the Zero-Tails and the future "Nue" project, he needed to repeatedly pore over Tanuki Shigaraki's notes, constantly simulating the entire process of molecular-level surgery in his mind, and mastering the conversion and application principles of Dark Chakra.
To put it simply, he had to memorize research papers...
Might Duy would also occasionally inform him of the movements of that female spy hidden within the Medical Corps.
It seemed like a lot of things, tangled together like a thousand threads, as if splitting himself in two wouldn't be enough.
But with a bit of organization, it became very clear.
Hyuga Yu only had one thing to do—
Develop the [Byakugan: Wind Style Chakra Mode].
Starting from this point, Hyuga Yu quickly arranged his schedule:
4:00 AM: Wake up, head to the Corpse Processing Squad to work, and rapidly improve medical ninjutsu.
12:00 PM: Eat, chat with Might Duy for a while, and learn about recent events in the camp from Master Duy.
2:00 PM: Finish work at the Corpse Processing Squad and begin working overtime to research how to fuse Wind Style into the Rasengan until his physical strength is exhausted and he can no longer refine chakra.
(PS: The Rasengan, a jutsu every transmigrator must replicate, was already mastered by Hyuga Yu when he was ten. He just didn't use it much due to insufficient chakra and its lack of synergy with his combat system.)
Because the cyan chakra existed, it could directly and forcibly decompose a Rasengan that started to go berserk when filled with Wind Style chakra. Therefore, this step posed no risk to Hyuga Yu; it was merely a matter of building up proficiency.
6:00 PM: Eat, simulate surgery, and research Zero-Tails technology.
1:00 AM: Sleep.
Hyuga Yu had thought about using Shadow Clones for the "EXP glitch" training, but unfortunately, he was not Naruto Uzumaki, nor did he have the Nine-Tails. When the multiplied fatigue hit him, he would sleep for 18 hours straight, which actually hindered his overall training efficiency.
And so,
As the days passed, Hyuga Yu—who had already laid a foundation for thirteen years—showed impressive progress in all aspects after initially resolving the constraints of his chakra.
One week later:
Hyuga Yu mastered the Wind Style: Rasengan. He attempted to perform shape transformation on it, trying to mold it into the Wind Style: Rasenshuriken.
Then,
Unsurprisingly, he failed due to insufficient chakra.
Hyuga Yu later molded it into a green, swirling, slightly smaller miniature form, successfully replicating "Boruto's" signature move. However, the chakra consumption was still too severe, so he stowed the Wind Style: Rasengan away in his backup ninjutsu library to gather dust.
Another 10 days passed:
Hyuga Yu's training results in the three major A-rank medical ninjutsu received high praise from Furofuki. Hyuga Yu took this opportunity to discuss the feasibility of the [Wind Style: Chakra Scalpel] and the [Byakugan: Wind Style Chakra Mode] with Master Furofuki.
Of course, he did not explicitly state that these were ninjutsu intended for combat, which would have worried Furofuki for nothing. Instead, he steered the conversation toward the construction of an accelerated metabolic circulatory system.
Furofuki offered many insightful suggestions.
Day 29—
The date reached November 12, Year 49 of the Leaf.
The situation on the Eastern Front began to deteriorate rapidly.
The clouds of war began to loom over the head of every Leaf shinobi on the Eastern Front.
————
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