Moreover, through deeper research and personal experience, Shiyu Uchiha discovered there were two distinct methods of enhancing the dojutsu when combining both eyes. In the first case, one eye could assist the other in activating a dojutsu. Although the effect stayed the same, chakra consumption was cut in half.
After successfully executing the technique, the fatigue felt by the eyes also decreased. As long as it wasn't used repeatedly in a short time frame, the impact on vision was almost negligible. This method required high natural aptitude, as well as sufficient proficiency with the Mangekyou and its techniques to be truly understood and mastered.
The second situation was a hypothesis based on the first, though this method caused far too much damage to the body for him to dare try it easily. He treated it instead as a last-resort trump card.
This approach also involved one eye assisting the other during a dojutsu. With chakra consumption unchanged, it could double the power of the technique.
Privately theorized, Shiyu believed that with his current condition, if he truly used this move, the assisting eye would likely remain mostly unaffected, but the main eye performing the dojutsu would become extremely exhausted. It might even lose the ability to maintain the Mangekyou entirely until fully recovered.
At that point, the body's self-protection mechanism would activate, requiring rest and adjustment before full recovery. Even after returning to normal, there was a strong possibility of serious negative effects on his vision.
Shiyu also considered using both eyes simultaneously, amplifying each other. That way, his dojutsu could reach maximum potential. However, doing so required further mastery of the Mangekyou, and he estimated that his current [Mangekyou] might burn out completely in a single use—at most, he could probably use it twice.
Additionally, drawing from his deep understanding of Fire Release and unique insights into its ultimate techniques, Shiyu successfully integrated the foundational Fire Release ninjutsu passed down by his clan with his original creation, [Blazing Meteor].
He not only completed optimization and adjustments to the basic Fire Release ninjutsu of the Uchiha clan but also deeply refined [Blazing Meteor] into a fully developed jutsu. After this breakthrough, Shiyu created the second version of [Blazing Meteor].
This new technique allowed chakra within his body to undergo simultaneous nature and shape transformation the moment it left his mouth, forming into a massive fireball resembling a solid meteorite, which could then launch a powerful attack against enemies.
Because Shiyu infused this fireball with an extremely advanced shape transformation ability, its destructive power was vastly enhanced, while its volume was compressed to the extreme limit, making its impact feel almost solid.
In addition to the intense heat damage from the flames, this technique also delivered tremendous physical shock upon impact.
Perhaps most importantly, when this fireball hit its mark, it unleashed an incredibly powerful explosion and shockwave—dealing devastating damage.
Moreover, to make this jutsu more flexible for various situations, Shiyu Uchiha deliberately designed it with three different modes.
The first mode allows him to release a single Blazing Meteor with an extensive range and high speed. This Blazing Meteor resembles a simulated version of the Great Dragon Flame Technique but is even more powerful and better suited to Shiyu's own characteristics.
The second mode enables him to simultaneously launch four Blazing Meteors. Although their trajectories differ slightly, all will converge on the same point. This technique was actually inspired by Madara Uchiha's Dragon Fire Chorus Technique.
As for the final mode, Shiyu can launch nine Blazing Meteors one after another. In fact, after realizing that the attacks from Phoenix Fire no longer satisfied his needs in terms of power and speed, he had long been contemplating improvements. At that very moment, driven by a sudden spark of inspiration, he created this entirely new mode.
Since this jutsu was entirely self-developed by Shiyu, he has mastered every detail inside and out. When using this jutsu, only a minimal number of hand seals are required.
In certain special circumstances, Shiyu could even perform the seals with just one hand. Naturally, when forming one-handed seals, both speed and complexity would increase accordingly.
Furthermore, partly because of Ling's influence, Shiyu also acquired from Tsunade a secret technique combining Yang Release and Fire Release. Because the Senju Clan rarely had members who could wield Fire Release chakra, this technique became the only known fusion of Yang and Fire Release.
By studying this technique alongside the Mystic · Fire Release · Chakra Mode and [Kujaku's Art], Shiyu gained valuable insights. He had already begun integrating Fire Nature Transformation into [Kujaku's Art], though due to insufficient experience, progress remained limited and was still at an early developmental stage.
From this, it was evident that both the Senju and Uchiha were currently facing difficult situations. While the Senju possessed clan-exclusive techniques, no one was practicing them.
Conversely, within the Uchiha Clan, although there were people willing to learn, the clan's secret techniques had mostly been lost, which significantly impacted the clan's overall strength.
Ever since mastering the dojutsu, Shiyu noticed that his dōkuriki had barely recovered at all. This concerned him greatly regarding his eyesight—a concern he had considered before, but now it had intensified.
After all, if things continued like this, even if he used his eyes sparingly, his reserves were still limited and would eventually run out completely, leading to blindness. Therefore, he decided to delve deeply into the Mangekyou, hoping to find a way to overcome this problem—or at least slow its progression.
After working hard and digging deeper, Shiyu Uchiha finally made a major breakthrough by synthesizing all the research data he had gathered.
He believed the immense dōkuriki he gained when unlocking the Mangekyou for the first time was probably caused by a mysterious power. With the aid of this mysterious force, this power not only created a massive amount of regular dōkuriki, but also transformed his original reserves into abundant Mangekyou-grade dōkuriki.
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