Realizing that this method of awakening the Tenseigan was ill-suited for his needs, Hyuga Lan began to contemplate other approaches.
Combining his knowledge of the Naruto story from his past life, he actually managed to conceive a new strategy.
In the Ninja World, major clans that have been passed down for thousands of years—such as the Senju, Uchiha, Hyuga, Uzumaki, and Kaguya—all trace their origins back to Otsutsuki Kaguya.
The Senju, Uzumaki, and Uchiha inherited the bloodline of the Sage of Six Paths, Otsutsuki Hagoromo, while the Hyuga and Kaguya clans inherited the bloodline of Otsutsuki Hamura.
If the bloodlines of these five great clans were combined, it would be roughly equivalent to the bloodline of Otsutsuki Kaguya.
The only known bloodlines of Otsutsuki Kaguya are those of the Sage of Six Paths, Otsutsuki Hagoromo, and Otsutsuki Hamura; Yin-Yang Release creations like Black Zetsu do not count.
In other words, if one could possess the bloodlines of all five great clans simultaneously and bring the purity of this bloodline close to that of Otsutsuki Kaguya, it would be highly likely to possess power approximating that of the Sage of Six Paths.
Of course, the probability of such a situation occurring is extremely slim. However, while he did not harbor delusions of directly obtaining near-Six Paths level strength, there was great promise in using this method of bloodline restoration to catch a glimpse of the true power of the Otsutsuki.
Therefore, Hyuga Lan's next step was to explore the genetic information of the Uchiha, Uzumaki, Senju, and Kaguya clans, all of which possessed Otsutsuki blood.
Through technological means, he intended to identify the Otsutsuki gene fragments deep within their bloodlines and, by integrating these fragments, reconstruct the complete Otsutsuki genome.
Afterward, through comparison, he would find a way to supplement his own genes, moving closer to the complete Otsutsuki genome and thereby achieving an atavistic evolution toward a true Otsutsuki.
The Otsutsuki bloodline holds incredible power; he believed that as long as the plan succeeded, it would inevitably cause a massive transformation in his physique and provide a greater opportunity to awaken powerful ocular techniques.
Of course, this experiment was far more volatile and dangerous than the method Hyuga Lan used to awaken the Tenseigan via Bio-Armor, so he certainly wouldn't be the one to serve as the initial test subject.
Furthermore, an ordinary person could never withstand such an experiment; they would likely collapse at the very start. Only someone with an exceptionally strong constitution would have even a glimmer of hope.
The person who best fit this criteria was Senju Hashirama, known as the God of Shinobi, but unfortunately, Hashirama had long since passed away.
Nagato, who could withstand the Rinnegan, also fit the criteria, but at present, he lacked the ability to capture him as a test subject.
Aside from Nagato, there was only one person currently available who met the experimental requirements, and that person was already in his hands.
That's right, it was that young Kaguya Clan Head.
Hyuga Lan had gone to great lengths to keep the Kaguya Clan Head alive precisely to use him as his experimental target, to have him pave the way and provide enough data to refine this plan.
Indeed, in his heart, Hyuga Lan believed the Kaguya Clan Head had no possibility of surviving this experiment; if the man could survive the initial stage and achieve a certain degree of Otsutsuki-fication, it would be a miracle.
Even then, it would require Hyuga Lan to pour immense effort into helping him cope with the various complications of the experiment.
This experimental plan was of vital importance; both the test subject and the various experimental materials were difficult to produce.
Especially since the Kaguya Clan Head was currently suffering from the Kekkei Genkai Disease, keeping him alive was a headache in itself.
Moreover, exploring the genetic mysteries of the Senju, Uchiha, and Uzumaki clans was not something that could be done in a short time.
The resources, scientific instruments, and materials required would take a great deal of effort to prepare. Fortunately, Pakura was currently raising funds for him, and he only needed to focus his efforts on sourcing the materials.
For the Senju clan's genetic material, he only needed Hashirama Cells, while for the Uzumaki clan, he had options like Nagato, Naruto, and Karin.
As for the Uchiha clan, there were Uchiha Shisui, Uchiha Itachi, Second Pillar, and Uchiha Fugaku.
He already understood the Hyuga clan's genes well enough, and as for the Kaguya clan, having the Kaguya Clan Head was sufficient.
After all, he was only looking for the most superior parts of the Senju, Uzumaki, and Uchiha genes that were complementary to the others, not the entire genetic sequence.
Having experienced awakening the Golden Tenseigan through genetic supplementation, Hyuga Lan realized that this method was a form of flawed evolution.
The Kaguya clan served as a prime example: if someone from the Kaguya clan were to supplement their Shikotsumyaku genes the way Hyuga Lan had supplemented his Byakugan genes, they would undoubtedly die.
This was because the power of the Shikotsumyaku likely originated from Otsutsuki Kaguya's All-Killing Ash Bone, a power that even Six Paths-level entities could not withstand. Only a Kekkei Mora existence, which is immortal and indestructible, could potentially endure the power of the All-Killing Ash Bone.
Simple genetic supplementation could never reach the level of a Kekkei Mora; therefore, the stronger the Shikotsumyaku power, the more likely one was to die from the Kekkei Genkai Disease.
Attempting to supplement the Shikotsumyaku genes to the level of the All-Killing Ash Bone would inevitably lead to death, as the body would be unable to bear it—not to mention the collapse crisis caused by the body's forced reorganization during genetic supplementation.
Thus, the path of simple genetic supplementation was dangerous and unpredictable, whereas restoring the Otsutsuki bloodline was theoretically more reliable.
However, as the Senju, Uzumaki, Uchiha, Hyuga, and Kaguya clans branched off from the Otsutsuki bloodline, their Otsutsuki blood had not only thinned over thousands of years of reproduction, but their genes had also mutated to the point where they were no longer mutually compatible.
An easy example to understand was the offspring of Senju Hashirama and Uzumaki Mito. As the children of the God of Shinobi and the Nine-Tails Jinchuriki, they remained obscure in the history of the Ninja World; there was no explanation for this other than poor talent and weak strength.
If even closely related clans were not compatible, it was even less likely for clans that hadn't intermarried for thousands of years to be so.
Therefore, simply gathering the genes of the Senju, Uzumaki, Uchiha, Hyuga, and Kaguya clans would result in a complete lack of compatibility, and any attempt to restore the Otsutsuki genome from that would be futile.
Thus, Hyuga Lan's next step was to analyze a vast amount of data to identify the interconnected and complementary genes among these clans, using this to create the Otsutsuki Bloodline Restoration Serum.
He would then test the results by injecting this serum into the Kaguya Clan Head, ultimately accumulating data to perfect the experiment and safely obtain the power of a complete Otsutsuki bloodline.
One must realize that every Otsutsuki that had appeared was at least at the Six Paths level; the Otsutsuki bloodline harbored immense energy.
The deeper one delved into the Otsutsuki bloodline, the more powerful one could become. Ultimately, the Naruto world was a world defined by bloodline.
Just as Hyuga Lan was staying up late to draft his experimental plan, an uninvited guest broke into his home.
Under the cover of night, a green venomous snake quietly slithered into his room and reached his side.
Hyuga Lan turned to look at the green snake, his gaze sharpening.
This was Orochimaru's snake!
How could he have learned so quickly that I returned safely?
It seems he still has quite a few hidden sentries in the village; his intelligence network is truly efficient.
The next moment, the snake's neck reared high.
A bulge rippled along the belly of the venomous snake, and soon, a scroll emerged from its maw, held firmly between its fangs.
Looking at the scroll still coated in the snake's viscous stomach fluids, Hyuga Lan frowned in disgust before reaching out to take it and opening it directly.
The Forest of Death?
To think he would come here directly; he really is as reckless and daring as ever.
Hyuga Lan stood there in thought for a moment, then, as if struck by a sudden realization, he rose to his feet, donned his robes, and began to walk outside.
At the same time.
At Anko's home.
Anko, who had been fast asleep, suddenly shuddered, bolting awake as if from a nightmare.
She then gazed toward a certain direction outside the village under the cover of night, a look of uncertainty and shock flashing in her eyes.
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