Chapter 306: Foundation of Immortality
In Boruto canon, Uchiha Shin's Mangekyō ability proved utterly mediocre—merely controlling weapons after physically touching them to leave marks.
Mangekyō Sharingan abilities originated from the Uchiha's deepest desires.
As Orochimaru's test subject, Uchiha Shin's identity was tool, was weapon.
This positioning severely influenced Shin's self-perception.
When Uchiha Shin later betrayed Orochimaru, attempting to rebuild the Akatsuki, what he needed were massive subordinates usable as weapons.
Under such circumstances, awakening Mangekyō abilities for controlling weapons proved unsurprising.
But now things differed.
Yasushi positioned Shin not as a weapon, but as clan member.
Influenced by this, Shin's heart's deepest desire wasn't becoming Yasushi's weapon, nor controlling more weapons serving Yasushi, but diligently studying cloning knowledge for Uchiha revival—completing this monumental responsibility.
Under such expectations, Shin's awakened Mangekyō abilities all related to this purpose.
Shin's left eye ability was called "Reverse Engineering Reconstruction." His right eye ability was "Causal Analysis Myriad Phenomena."
"Reverse Engineering Reconstruction" used Yin chakra as probe. When gazing at ninja tools, forbidden techniques, or biological bodies, it could reversely strip underlying logic, clearly exploring compositional principles, understanding core sequences—even reverse engineering fusion order and ratios.
"Causal Analysis Myriad Phenomena" skipped processes, reaching results directly. When activated, it constructed experimental sandboxes within the eye, simulating experimental processes multiple times, precisely capturing core data from genetic fusion and technique operation. More simulations meant higher accuracy.
This pair of eyes—one analyzed physical objects through reverse engineering, deducing scientific principles and related knowledge. The other enhanced scientific research efficiency, making experiments more productive.
With these eyes, Shin—originally requiring massive time for learning and experimentation—completely ascended in one step, skipping tedious processes while immediately becoming a super scientist, not limited merely to biology.
After briefly demonstrating these abilities, Orochimaru's eyes practically glowed green with greed.
These eyes were born for researchers—supreme treasures.
Orochimaru nearly wanted trading his Tenseigan for Shin's eyes.
"Truly enviable!" Orochimaru flicked his long tongue, licking saliva back from his lips. His gaze toward Shin filled with greed.
"Haha, Lord Orochimaru—our Uchiha clan's Mangekyō Sharingan are just this unreasonable. You've known this from day one."
Yasushi laughed loudly while patting Orochimaru's shoulder, half-joking, half-warning.
"Hmph!" Orochimaru snorted coldly without saying more.
Yasushi then grinned while appeasing him:
"But no need envying. Worst case, after Shin produces cloning results, I'll give you a pair of such Mangekyō too."
"You know me—always generous about these matters."
"Is that so..." Orochimaru's gaze flickered toward Yasushi before sneering. "Your gifts aren't easily accepted, Uchiha Yasushi. Speak plainly—what do you want me doing now?"
Yasushi didn't answer directly, instead grinning:
"Lord Orochimaru has possessed the Tenseigan for some time. How does it feel?"
After listening, Orochimaru immediately snorted displeasedly, glaring at Yasushi:
"Though these eyes granted tremendous enhancement with formidable power, I've carefully examined my strengthened cellular structure. These eyes at most provide longevity effects—still far from the immortality realm you promised!"
"Moreover, I recently heard the Tenseigan's ancestor, Otsutsuki Hamura, also died."
"Is the Tenseigan truly immortality technique?"
"Are you deceiving me?"
Previously Yasushi had indeed deceived Orochimaru to make him trouble Konoha Village.
Then his mind was full of revenge thoughts—where would he consider consequences?
He'd figured even if Orochimaru later discovered the deception, worst case they'd turn against each other fighting.
But now he and Orochimaru had developed some rapport, with many matters requiring his help. Couldn't break relations now.
So Yasushi grinned while coaxing him:
"Who said Otsutsuki Hamura truly died?"
"The Otsutsuki clan can travel through space, moving between different worlds planting trees. Such lifespans can't be this short."
"Otsutsuki Hamura's mother Kaguya Otsutsuki didn't die. His brother the Sage of Six Paths didn't die either. Why should he die?"
"I absolutely don't believe Otsutsuki Hamura died."
"Most likely he's like his brother—faking death while hiding behind scenes, plotting some conspiracy."
"Regarding your cellular activity not achieving immortality effects—that's purely because your eyes were stolen, not your own, so they don't match your body sufficiently."
"Faking death?" Orochimaru stared at Yasushi with suspicious expression. "You're certain?"
"Absolutely!" Yasushi spoke decisively. "Let me ask you—after transplanting Tenseigan, did you obtain Yin-Yang Release?"
Mentioning Yin-Yang Release, Orochimaru's expression immediately softened considerably.
"Correct. After activating Tenseigan Chakra Mode, Yin-Yang Release abilities indeed appeared in my body."
"How's that ability's effectiveness?"
"Very good." Orochimaru snapped his fingers. A puppet outside opened the door, walking before them before picking up laboratory instruments and beginning experiments.
Orochimaru watched the puppet's operations with satisfaction, boasting:
"Though these puppets' souls prove rather simple—unable to perform overly complex tasks—they excel in mechanical precision, never making mistakes."
"Moreover, they possess certain intelligence, understanding simple commands. Having them perform basic routine operations proves extremely convenient and effortless."
"In my current laboratory, ordinary assistants have been eliminated. Only these puppets remain."
"With these puppets, I completely don't need those foolish subordinates—only retaining a few capable assistants while discarding the rest as test subjects."
Seeing Orochimaru extremely satisfied with this puppet control technique, Yasushi smiled:
"Yin Release creates form, Yang Release grants life. Yin-Yang Release encompasses all things—this is immortality technique's foundation!"
"You can already grant puppets simple life and souls. Proceeding further—making your own life and soul preserve eternally—wouldn't that be true immortality?"
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