All preparations had been completed, and Uchiha Yue, having long resolved to move forward, did not hesitate for even a moment. The instant he returned to his secluded quarters in the Uchiha compound, he immediately immersed himself in the illusory world—his personal spiritual domain—and began the long-awaited fusion of his Eternal Mangekyō Sharingan.
As for the specifics of the fusion process, they require little elaboration. Thanks to the absolute control he wielded in the illusory world—capable of reflecting his will and manipulating soul-level structures with precision—the integration proceeded far more smoothly than any conventional transplant. The resistances that would typically arise in a standard Mangekyō fusion were nullified.
Thus, when Uchiha Yue's physical body, which had temporarily dematerialized within the illusory realm, re-emerged in the real world, his eyes had undergone a striking transformation. A new, transcendent pair of Eternal Mangekyō Sharingan now sat within his eye sockets—pupils gleaming with power that defied comprehension.
The pattern of the new eyes bore a unique design, resembling a fusion between Obito Uchiha's Kamui Mangekyō and Yue's original pupil technique—intertwining spirals and the flame-like etchings that were exclusive to his spiritual signature. Meanwhile, although the ocular remnants of Uchiha Itachi and Uchiha Shisui had been absorbed into the fusion process, their Mangekyō designs left no visible imprint on the resulting eternal pattern, hinting at their lesser compatibility.
"What a staggering surge of pupil power," Yue muttered to himself as he gazed into a polished obsidian mirror prepared in advance. "It feels at least seven or eight times more potent than before… Could this be the combined effect of fusing three complete Mangekyō and integrating the spiritual origin of Obito's soul? This power… it's overwhelming!"
More astonishingly, the illusory world he had crafted over the course of his awakening—once a semi-real space bound by perception and mental constructs—now possessed unmistakable spatial weight. It was no longer just a conceptual domain but a true, independent dimension, much like Obito's Kamui space. The transformation defied traditional limitations of Genjutsu, surpassing the framework even high-level Yin Release techniques operated under.
Staring into the mirror, sensing the layered depth of his new Eternal Mangekyō, Yue's voice was tinged with awe and excitement. "So this is the evolution I've been seeking… not just an eternal flame of chakra, but a genuine convergence of soul, space, and illusion."
He analyzed the results in silence, reflecting on what had brought him here. "Obito's Mangekyō must've been deeply compatible with mine. Not only did I acquire his ocular technique, but I also absorbed the part of his soul stripped from his spiritual body—something close to the very root of his Mangekyō's origin. That's the key. Itachi and Shisui's Mangekyō were beneficial, but they only served to enhance the fusion—mere adornments compared to the foundational power I derived from Obito."
Sharingan, Yue theorized, was birthed through the bloodline of the Uchiha, but its true source lay in Yin Release and the soul. Prior to the Mangekyō's awakening, the Sharingan functioned mostly as a bloodline tool. But once it evolved, it became an imprint of the user's inner world—a direct mirror of their mind and spirit. That meant the soul held dominance over ocular expression from that point forward.
His understanding had only deepened after his mastery of the Spiritualization Technique—a forbidden Leaf jutsu that separated the soul from the body. While in soul form, Yue had still been able to access his Mangekyō powers, despite being unable to utilize elemental ninjutsu. He recalled how Obito, even in his disembodied soul state, had used both variants of Kamui. That fact only strengthened Yue's conviction that ocular abilities were fundamentally soul-driven.
Then the revelation struck: if transplanting Mangekyō from blood relatives could awaken the Eternal Mangekyō by stabilizing the chakra drain and preserving vision, what would happen if one merged Mangekyō directly at the soul level instead of through surgery?
And more critically, what if those fused Mangekyō included not only the physical eyes but also the source spirit behind them?
After all, in the manga, Uchiha Madara had taken his brother Izuna's eyes to awaken his Eternal Mangekyō, while Uchiha Sasuke inherited Itachi's eyes—but neither showed evidence of inheriting the exact visual design or the specific Mangekyō techniques of the donor. That suggested a limitation—external transplantation preserved longevity but not total essence.
So then, Yue reasoned, if both the soul-origin Mangekyō and the ocular vessel were merged simultaneously, could one achieve a superior form of the Eternal Mangekyō—a truer fusion that could not only preserve but also evolve the original techniques?
Once this idea took root in his mind, Yue couldn't resist testing it. And with Obito's captured soul and eye in hand, the experiment became inevitable. In hindsight, Obito's fate had been sealed from the moment Yue confirmed this hypothesis.
Now, with the results evident, Yue was vindicated. The new Eternal Mangekyō was not merely immune to blindness or chakra drain—it had sublimated his original techniques, evolving them into something beyond the scope of normal ocular ninjutsu.
His illusory world had now become a real-space domain—a complete sub-dimension that could physically store people and objects at will, just as Obito's Kamui space had done. Yet unlike Kamui, Yue's world still retained its illusory properties. It didn't need to activate a separate teleportation process—it was the realm itself.
Even the spatial compression and warping techniques Obito used were now accessible to Yue without flaw—yet now bolstered by the illusory foundation that made Yue's technique far more deceptive and fluid.
In essence, Yue had inherited everything from Obito's Mangekyō—and more.
That said, the transformation of the illusory world did not come at the cost of its prior functionality. The "physicalization" was merely a spatial layering; within the domain, it still functioned as it had before. The illusion could overlay reality—or vice versa. In fact, Yue discovered he could temporarily reverse the transformation, restoring the illusory qualities completely.
The evolved realm was not diminished; rather, it had become both space and illusion, capable of functioning as either at will.
However, compared to Obito's overwhelming contribution, the Mangekyō abilities of Uchiha Itachi and Shisui were notably underwhelming. While they did augment Yue's total chakra capacity and pupil strength, their techniques lacked the compatibility necessary for full integration. Yue's unique illusory world, being a manifestation of his mental landscape, did not resonate naturally with their ocular powers.
He could imitate or utilize those skills within his domain—such as Itachi's Tsukuyomi or Shisui's Kotoamatsukami—but they remained external, supplementary techniques rather than intrinsic extensions of his own Mangekyō.
In truth, they resembled supplementary jutsu learned through Sharingan mastery rather than exclusive soul-bound techniques. Though they expanded Yue's repertoire, they lacked the cohesion and amplification of his original powers.
Still, Yue harbored no dissatisfaction. The core experiment had succeeded far beyond expectations. Any further gains would be gratuitous.
With this evolved Eternal Mangekyō—empowered by soul fusion, spatial manipulation, and spiritual illusion—Yue was confident he had reached a tier that could rival even the Rinnegan. Perhaps it lacked the breadth of technique offered by the Six Paths, but in terms of personal technique, dimensional control, and soul-level manipulation, his eyes were in no way inferior.
JOIN MY PATREON TO READ ADVANCE 30+ CHAPTERS
Patreon.com/Kora_1