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"It seems that the hope of awakening a second MangekyĹŤ Sharingan is currently very slim."
Even so, Uchiha Kiyo did not allow himself to become overly concerned with gains and losses. After all, this wasn't something he had set his hopes on for long. The thought had occurred to him before, but he never expected that his ocular cells would lose so much vitality.
The discomfort caused by this was still present—especially when compared to the full vitality present in other parts of his body. The contrast made the damage even more apparent.
Fortunately, it was during his study of the Hero Water—specifically its absorption of natural energy—that he discovered a critical insight into this issue concerning ocular cells. This gave him a sliver of hope toward making up for the lost vitality and perhaps re-approaching the idea of a second Mangekyō Sharingan.
But even if he couldn't awaken a second one, it wasn't a major loss.
After all, he already possessed a MangekyĹŤ Sharingan. It hadn't blinded him yet, and with his current understanding, the risk was lower than ever. Therefore, he didn't have a pressing desire for a second pair.
Yes, his vision was intact. He wasn't going blind.
Once he identified the real cause of discomfort in the eye cells, Uchiha Kiyo also grasped the root reason why Mangekyō Sharingan caused blindness. The evolution and usage of the Mangekyō required energy—negative emotions being one of them—but more crucially, it consumed vitality, especially in regenerating its chakra-intensive pupil powers.
As for the Eternal MangekyĹŤ Sharingan, Kiyo still didn't fully understand the mechanism behind it. He lacked any samples or firsthand data.
"Maybe it just absorbs vitality from natural energy or some alternative source…"
With this uncertainty, his motivation to pursue the Eternal Mangekyō had waned. After all, his current Mangekyō did not cause deterioration, and he was already researching advanced ocular techniques…
In the following days, Uchiha Kiyo stayed in close communication with Earth and Stone, awaiting updates and memory transfers from his shadow clones.
They were reintegrated in the following sequence: Shin, Hui, Yun, and Maga.
Among them, the memory merge from Shin and Hui had the smallest psychological and chakra impact. Over the past three years, they had been training under Uchiha Kiyo's newly developed Kekkei Genkai framework, which greatly reduced conflict between clones and the original.
Cloud's reintegration caused moderate ripple effects, similar to the Earth and Stone fusion previously endured. However, thanks to Uchiha Kiyo's thorough preparation, the memories and chakra were stabilized successfully.
Ma Jia's case, however, was the most severe. The sheer impact from the reintegration struck Uchiha Kiyo hard—so much so that it took him considerable time to fully suppress the feedback.
For the past two years, Ma Jia had focused his efforts on developing the Sand Release (Suna no Jutsu). His chakra system had diverged the most. While his core chakra nature remained stable, the overdevelopment of secondary chakra elements drastically increased internal conflict with the main body's chakra during reintegration.
Despite extensive research, Ma Jia hadn't yet mastered a complete Sand Release technique. This wasn't due to lack of understanding—on the contrary, Ma Jia had significant development experience thanks to the main body. Even without access to Shukaku's chakra as a base reference, he had managed to reverse-engineer Sand Release fundamentals.
The reason he hadn't activated it earlier was clear—his physical body couldn't handle it yet.
Now, with the clone refreshed, development could resume at full pace.
Sunagakure
Residence of Elite JĹŤnin Ma Jia
In the last two years, Ma Jia had made great strides in Reanimation Jutsu development and had accrued numerous contributions to the village. His mission count and successful records were enough to merit his promotion to Elite JĹŤnin.
No one questioned his strength—after all, he had defeated the Fourth Kazekage, Rasa.
Even if his strategy was unorthodox, it was still his ability. In terms of speed and battlefield mobility, Ma Jia ranked among the best of the elite jōnin. His promotion was well-justified—at least from the perspective of Sunagakure.
But the reality was that Ma Jia had already reached the Kage-level.
Not just in mobility—he had achieved devastating offensive capabilities and increased chakra volume. Like all other clones, his chakra had skyrocketed.
What made him particularly formidable was his partial success in developing a prototype of Sand Release based on the Bloodline Limit (Kekkei Genkai) theory. With inspiration drawn from the Third and Fourth Kazekage's Magnet Release and their control over metallic sand, Ma Jia's version went even further.
Using lessons from the Mokuton humanoid technique and the Melting Release Gundam developed by Earth and Stone, Ma Jia created a Sand Release Gundam prototype.
While it lacked the polish and precision of the Melting Release version, the nature of Sand Release made Ma Jia's version far superior in terms of defense and endurance.
Overall, Ma Jia's Sand Gundam could stand on equal footing with Earth and Stone's Lava Gundam.
Of course, chakra cost remained a drawback. Ma Jia's techniques required slightly more chakra than their counterparts.
"Sand Release—whether manipulating sand or metals—I initially confused it with Magnet Release, but it deserves its own classification."
The force that manipulates metal in Sand Release isn't rooted in electromagnetic fields or magnetism per se, but in direct manipulation akin to elemental control. It could be compared to Metal Release (Kinton), but it lacked the ability to generate metal from nothing.
Thus, he chose not to rename it Kinton.
Still, its limitation lay in sourcing. Sand or iron particles had to be prepared in advance or refined on-site.
Now, with the updated body, Ma Jia could handle Sand Release's strain. He planned to refine it quickly and prepare it as a reliable trump card.
Uchiha Kiyo's main body also intended to train in Sand Release eventually. As a Kekkei Genkai, it would still enhance his physical capabilities and broaden his combat repertoire.
Unknowingly, Uchiha Kiyo had transformed far beyond his earlier expectations. He had successfully developed and integrated multiple Kekkei Genkai—Lava, Ice, Wood, and now Sand Release…
Still, his main body would hold off on training in Sand Release until the MangekyĹŤ adaptation phase concluded.
The signal for this would be the completion of his MangekyĹŤ's unique pupil technique.
Without external stimulation, once the technique stabilized and took form, his body would naturally adjust to its demands.
Three days later, Ma Jia finally harmonized with Sand Release chakra and entered the adaptation phase.
At this point, nearly all of Uchiha Kiyo's clones—except Cloud—possessed distinct Kekkei Genkai.
Even more impressively, each clone had developed a matching Gundam-style technique based on their respective elements. With that kind of power and versatility, no one would believe they weren't an organized group or elite faction.
"Cloud's progress must speed up. Eye modification research is already at an advanced stage. Should I use a regular eye or a pre-evolved Sharingan as the base?"
Uchiha Kiyo was still weighing this.
A modified eye built upon a three-tomoe Sharingan would be more potent, but it came with drawbacks—chakra consumption, and the eye's physical traits could expose the user's identity.
More importantly, Uchiha Kiyo only had one spare pair of three-tomoe Sharingan. If he used it for modification, it would be unavailable for future research.
He couldn't just dissect his own eyes.
And deep inside, he hadn't entirely given up on awakening a second Mangekyō. While the original soul of the clone had dissipated, the clone itself—cultivated for over a decade—might still achieve evolution.
There was no proof a clone couldn't attain MangekyĹŤ.
Keeping a three-tomoe Sharingan in reserve preserved that possibility—and offered valuable material for further ocular studies.
"Damn, I forgot to prep this in advance."
A realization hit Uchiha Kiyo.
The eye meant for modification wasn't prepared. He'd have to personally deliver it to the Cloud clone.
"Sigh… I guess I'll have to step out."
Whether it was annoyance or excitement, Uchiha Kiyo gave a dramatic sigh.
Earth and Stone: "Ignore him. He just wants to go outside and mess around."
Back in his lab, Uchiha Kiyo selected the best spare eye in his possession—one with the highest clarity and dynamic vision tracking. It was perfect as a foundation for ocular reconstruction.
He placed the eye inside a nutrient-filled culture pod, fixing it beneath the micromanipulation lens.
Focusing with his own eyes on the microscopic interface, he could clearly see the internal structure. He injected his chakra into the machine, which filtered it to only 1% of its original intensity.
Kiyo couldn't manually control chakra at that precision yet. The smallest chakra unit he could handle was around 100 units. This instrument handled ultra-fine chakra filtration and manipulation.
"Chakra truly is an extraordinary energy source…"
Every time he conducted micro-level experiments, Kiyo was left in awe.
With chakra, operations that required surgical tools became simple. It could cut, extract, rebuild—all with precision.
Guiding microscopic threads of chakra into the eyeball's inner structure, Uchiha Kiyo began the transformation.
His concept revolved around a double pupil layout.
The first step: reshaping the physical structure of the pupil into a dual configuration. Even neural connections were altered to align with this structure. The goal was to allow each pupil to capture and interpret light separately, significantly boosting dynamic visual acuity.
For enhancing perception, he used chakra frameworks to amplify both pupils' light reception and light processing capacities. This also improved nutrient flow into the eye, stabilizing the new structures.
This area had been the crux of his earlier research—identifying the ideal shapes and structural compositions to enhance light capture and dynamic perception…
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