So she quickly tried to talk Might Duy and his son out of using this power recklessly, urging them to be careful—or better yet, not use it at all.
Then Shiyu Uchiha interrupted Ling Uzumaki and briefly explained the secret behind the Sharingan bloodline ability within the Uchiha clan. He said that the true power of the Sharingan could only awaken after losing someone dear, triggered by intense, painful regret.
He also emphasized that if giving their lives could protect what mattered most, members of the Uchiha clan would unhesitatingly make that sacrifice. It was a truthful statement indeed—for without such determination, there wouldn't be such deep regret in the first place.
These words deeply moved Might Duy and immediately won his approval, as they closely matched his own understanding of the Will of Fire.
It was worth noting that the version of the Will of Fire followed by father and son wasn't the same as Hiruzen Sarutobi's—it came from Hashirama Senju, the First Hokage. Though in Shiyu Uchiha's view, even this original version had many flaws, its core principle focused on self-restraint.
Shiyu believed that Hashirama Senju's Will of Fire meant igniting oneself to illuminate others, without forcing everyone to do the same. It gave each person the freedom to choose rather than imposing strict standards—unlike the selfish path taken by Hiruzen and his successors, which demanded others' sacrifices while protecting themselves.
When she heard these words, Ling Uzumaki couldn't help but recall the night her entire clan was wiped out. Back then, many elders from the Uzumaki clan bravely used the forbidden technique "Dead Soul Seal (Shikigami Sealing)," sacrificing themselves alongside Kiri ninja to give the children—including her—a chance to escape. At that moment, she found herself unable to speak out against them any further.
Later, Might Duy demonstrated the [Eight Gates]. After watching it, Shiyu Uchiha raised a critical question: "Is there any possibility of controlling the chakra unleashed by the Eight Gates?" This question drew everyone's attention because it directly affected the technique's practicality and safety.
Might Duy looked serious, sighed heavily, and replied, "This force is simply too wild to control. Every gate opened increases its intensity dramatically!"
Yet he soon showed a trace of satisfaction: "Still, there's some upside to all that raw power—it grants immunity to Genjutsu Control, which actually removes a major weakness for us Taijutsu users."
Shiyu Uchiha nodded slightly in agreement before adding, "That certainly is an advantage. However, since that chakra doesn't tear your body apart, it suggests that it might still be possible to bring it under control. It may just require chakra control beyond our current abilities,
or alternatively, if one strengthens the physical body sufficiently, it might also become possible to contain such wild chakra—for example, the successive Raikages from Kumogakure possess remarkably strong physiques." Even Shiyu couldn't help but think of the Seven Wounds Fist from martial arts novels—where injuring oneself precedes harming enemies—recognizing that bodily damage usually results merely from insufficient foundational strength.
Upon hearing this, Might Duy didn't immediately know how to respond. Deep down, he recognized the truth in Shiyu Uchiha's words, yet he promptly replied, "Since you see it that way, Lord Shiyu, perhaps you could assist us in figuring this out? I beg you."
Might Duy couldn't help but have a bit of personal interest in the matter. He hoped that Shiyu Uchiha and Ling Uzumaki could further improve the Eight Gates, which would reduce the risks for Might Guy during future training. He wasn't too hung up on whether it was labeled a forbidden technique or not.
After all, both of them came from prestigious clans—the Senju Clan and the Uchiha Clan—who had jointly founded Konoha Village. Their family martial arts ran deep in the Ninja World, making them highly likely candidates to achieve this goal.
Shiyu Uchiha figured out Might Duy's intentions and decided not to refuse. Truth be told, he was actually pretty curious about this forbidden art—it nearly pulled off something legendary in the original story. Therefore, with great interest, he accepted the scroll handed over by Might Duy. After opening it, he saw the famed Eight Gates known across the Ninja World.
While Shiyu Uchiha examined the scroll, Might Duy gave them a detailed explanation, quickly familiarizing him with the general concept behind the Eight Gates.
To his surprise, the current version of the Eight Gates appeared far more rudimentary than what he remembered. There were no established "safe zones" among the first three gates, nor was there any semi-open buffer state at the sixth gate yet—those concepts still remained theoretical and had not yet been practically implemented.
The entire technique exuded an aura of danger, fitting the definition of a standard Kinjutsu. No wonder Konoha never pursued it after Might Duy's sacrifice.
As Shiyu studied the initial version of the Eight Gates—before Might Duy had refined it through practice—he felt as if it was less like a forbidden art and more like a suicide technique.
This made it clear that the Eight Gates everyone later knew had gradually been perfected by the father and son duo—Might Duy and Might Guy. Since both had eventually mastered the technique, they must have developed their own insights along the way. Especially Guy, who somehow survived after fully unlocking the Eight Gates, undoubtedly led to systematic improvements in this Kinjutsu, even going so far as to train an Eight Gates squad.
Furthermore, many supporting taijutsu techniques were also still limited to only Primary Lotus and Reverse Lotus. Clearly, at this point, the Eight Gates Kinjutsu was nothing more than a massive unrefined ore—an untapped resource requiring continuous excavation and refinement before revealing its true brilliance.
There were two main reasons why Shiyu Uchiha wanted to learn the Eight Gates:
Firstly, it was for research purposes—to broaden his understanding. This technique offered a framework quite different from the current chakra system.
Secondly, he intended to use it as a form of training resistance, increasing the intensity of his chakra so that he could then work on refining his chakra control. By improving his chakra control, both the nature transformation and shape transformation of his chakra would naturally see progress as well. These three aspects followed a natural progression.
Through careful study, he realized that in terms of boosting combat effectiveness, the Eight Gates and his personal battle system were completely incompatible. Shiyu primarily relied on ninjutsu and combined ninja-taijutsu techniques, and once the Eight Gates were activated, those abilities would be disabled.
Unless he built an entirely new fighting style around the Eight Gates, it'd be nearly impossible to unlock their full power.
However, doing so would mean undoing all the efforts Shiyu Uchiha had made since traveling through time until now, which is absolutely not worth it.
Moreover, relying primarily on the Eight Gates would most likely result in a brief moment of brilliance—dazzling yet fleeting, like fireworks. That doesn't fit with his philosophy at all. Still, it has tremendous value when it comes to helping others cultivate.
To further strengthen their relationship, Shiyu Uchiha warmly invited Might Duy to join the training unit of the Police Department as a Taijutsu instructor.
Since the job wouldn't involve much responsibility and wouldn't disrupt his daily routine too much, Might Duy happily accepted the offer.
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