So, the big question now was how to activate this mysterious power again. Shiyu Uchiha lost himself in thought.
Ultimately, he concluded that only when the channel formed by the hypnotic ability of the Sharingan was completely opened, allowing the inner spiritual energy to continuously pour forth, could they ensure the Mangekyou's Dōkuriki (ocular power) wouldn't deplete.
At the same time, Shiyu also discovered why the Mangekyou's ocular power bore the title of Ultimate Yin Release (Gokkaton no Kyōin)—it was due to its extremely high power level, which exerted tremendous pressure on the user's body.
If the body wasn't strong enough, using the dojutsu would instead erode one's physical form, potentially causing bloodline sickness (Kekkei Shō). Take Itachi Uchiha from the original story as an example—because he awakened the Mangekyo Sharingan too early, before his body had fully matured, he eventually developed a severe case of bloodline sickness.
Obito Uchiha and Kakashi, however, presented different circumstances. According to his speculation, Obito might have used Hashirama Cells to compensate for certain deficiencies in his Uchiha lineage, thereby enhancing the power within his bloodline.
This not only effectively avoided potential risks but also allowed Obito to utilize the tremendous vitality contained within Hashirama Cells and the power of Yin-Yang Release (In-Yō Doton) merged into the All-encompassing World (Shinra Banshō), continuously nourishing both his body and eyes. Therefore, he avoided the problem of Dōkuriki depletion within the Mangekyou and prevented blindness.
This enabled Obito's Mangekyo Sharingan to be used continuously. Combined with the unique ability Kamui, it endowed Obito with self-defense capabilities regardless of any situation he might face.
As for Kakashi, his situation was even more special. Lacking the pure bloodline of the Uchiha clan, the challenges he faced became increasingly severe. In the original story, Kakashi's chakra reserves were far below what his extraordinary talent and formidable strength demanded.
Remember, at just twelve years old, he was already a Jonin-level ninja, meaning his chakra reserves were absolutely substantial. In the following years, which should have been the golden period for rapid chakra growth, his chakra practically stopped increasing.
Even after awakening the Mangekyou Sharingan, he still needed over a decade to finally master its usage. However, this very situation allowed him to avoid the Kekkei Genkai sickness that could have resulted from overusing the Sharingan.
Regarding the Eternal Mangekyo Sharingan, Shiyu's hypothesis was: when two similar eyes merged, the bloodlines dramatically strengthened each other through overlapping, completely clearing that mysterious channel. This mysterious force allowed the bloodline to refine itself while greatly amplifying the associated spiritual energy.
Since in the original story the two people who possessed the Eternal Mangekyo were both incarnations of Indra, Shiyu believed that the evolution into the Eternal Mangekyo Sharingan must have involved Indra's chakra—just like the Rinnegan required the Sage of Six Paths' chakra. Thus, he felt the chances of others achieving this would be extremely low.
Regarding the power of inner consciousness, since he had personally awakened the Mangekyou Sharingan and experienced the process firsthand, during this period Shiyu Uchiha speculated that the Sharingan interfaced with self-awareness. According to Buddhist philosophy, consciousness was the root of the five senses, known as the sixth sense above the other five.
Through this "root" of consciousness, one should easily master the other four senses. However, without the blessing of bloodline inheritance and sufficient development, special abilities could not arise. Its capabilities were far inferior to those of the eyes, but it served as a significant enhancement to the eyes' abilities.
The reason Madara could distinguish Hashirama Senju's wood release clone—a physically manifest form—was because these four perception systems worked in harmony with his eyes. When Madara made this statement, he expressed great pride in his ability. Obviously, identifying wood release clones was extremely difficult, yet he had managed it, indicating he possessed unique methods somewhat aligned with Shiyu Uchiha's theories.
Because of this, even after Madara Uchiha was recently revived without his eyes, he still maintained significant control over his surroundings. After all, besides his eyes, he still had four highly developed senses at his disposal. Although, having his heart ripped out twice was admittedly an awkward experience.
Shiyu Uchiha didn't believe that over the thousands of years prior to Madara, no member of the Uchiha Clan had ever attempted to regain their vision through eye transplants. On the contrary, such events likely occurred many times and may have even become commonplace.
As the number of eye transplants increased, certain unusual circumstances would inevitably arise, such as transplanting eyes from siblings. Based on Black Zetsu's reaction, it was obvious Madara was the first successful case.
If that weren't true, Black Zetsu wouldn't be unaware of this and would have already been pushing others along similar paths repeatedly. Therefore, it could be inferred that Madara Uchiha was the only person who successfully acquired eternal Dōjuriki through eye transplantation.
As for the theory about genetic completion, Shiyu Uchiha found it utterly implausible. If two brothers' genes were not highly similar, they simply wouldn't be brothers.
After thoroughly studying the Mangekyou, although Shiyu Uchiha hadn't made major progress in replenishing Dōjuriki, he hadn't come away empty-handed either. In fact, he achieved something very important—he upgraded the Sensor Secret Jutsu originally based on the Sharingan.
Through painstaking effort, he further integrated his previous Sharingan-based sensing jutsu with knowledge and research records related to the Kagura Mind's Eye from the Uzumaki clan, greatly expanding and sharpening his sensory capabilities.
Now, his perceptual range had vastly expanded, its effectiveness almost rivaling the Byakugan of the Hyuga Clan main house. More astonishingly, he could even achieve internal sight, clearly perceiving the 361 acupuncture points within his body. However, this ability still lacked clear definition and required further refinement.
Yet even so, this advancement instantly elevated Shiyu Uchiha into one of the most powerful sensor ninja in the entire Ninja World. Undoubtedly, this was an extraordinary achievement—an invaluable skill for controlling battlefield conditions on the eve of the coming great war.
Moreover, Shiyu Uchiha also possesses the ability to fly. However, while in flight, he cannot channel chakra to perform other ninjutsu techniques. That's why this move is mainly used for self-defense.
This is also why he is so determined to complete the final chapter of Kujaku's [Maru]. Only by mastering this technique can he truly enhance the practical combat value of his flight. Otherwise, even if he takes to the skies, he becomes a soft target—only useful when fleeing for his life.
<><><><><><><><>
Thank you for reading! Your support will keep me updating!
~ Every 50 Powerstones = **4 Bonus Chapters** this weekend!
<><><><><><><><>
Want to read the subsequent content in advance?
Please follow my Patreon:patreon/Tansnovel
Tans Novel - The Fastest-Updating Naruto Fanfiction Account
Read 100+ chapters in advance, with at least 3 new chapters updated every day! More free chapters! 20+ Naruto fanfictions!
Just three steps:
1. Download and open the "Patreon" app
2. Search for "Tans Novel"
3. Click on the collection and enjoy to your heart's content
<><><><><><><><>