In a chamber filled with intricate instruments, sealed scrolls, and rows of petri dishes glowing with faint chakra, a young man in a white coat stood silently before an ice mirror. Mizuki Ryosuke stared into his own reflection—one eye untouched, the other now a swirling pool of power.
If Kakashi Hatake's Sharingan was a silent thief that siphoned chakra endlessly, then the Rinnegan was an insatiable glutton, draining not only chakra but one's vitality. Kakashi, not being an Uchiha, lacked the chakra reserves to sustain even a single Sharingan without excessive strain. That's why he sealed it, resorting to archaic measures like sealing tags to slow its constant drain.
But Ryosuke's case was far worse.
Rinnegan's load wasn't just chakra-based. It bled the life force—the essence of yin and yang—from its host. Kakashi could barely manage a Three Tomoe Sharingan; imagine forcing an aircraft engine into a motorcycle. That was Ryosuke's burden.
Madara Uchiha had orchestrated every part of his plan with terrifying precision. Every step—from implanting his Rinnegan into the unsuspecting Uzumaki Nagato, to manipulating events through Black Zetsu—was deliberate. The Rinnegan was never meant to be wielded freely. Only a true Uchiha, born with a perfect balance of powerful chakra and spiritual resolve, could bear it without wilting.
And Nagato wasn't one.
Nagato, though a descendant of the Uzumaki clan with strong life force, still suffered the toll. In the original manga, his emaciated appearance, confined to a mechanical walker, reflected the eye's unbearable drain. Like Kakashi, Nagato could not deactivate the dojutsu. It was always open. Always consuming.
Unlike Uchiha who could activate or suppress the Sharingan at will, both Nagato and Kakashi had no such control. They had to live with eyes that devoured their strength day by day. Nagato, with his Rinnegan permanently active, was bound to decline before fulfilling Madara's plan to revive himself through Rinne Tensei no Jutsu.
Madara's greatest fail-safe wasn't just the eye—it was Black Zetsu, his will incarnate. Zetsu's ability to manipulate, possess, and alter history itself ensured that even in death, Madara's "Eye of the Moon" project continued. Zetsu would manipulate Obito, ensuring that Rinne Tensei was used when the time came.
And now, that legacy had been passed to Mizuki Ryosuke.
When Ryosuke implanted the Rinnegan—Madara's right eye—into his socket, he immediately understood why Madara never truly feared Nagato. The power radiating from the eye surged through his body like a storm. The pupil, now glowing lavender with concentric ripple patterns, carried not only strength but overwhelming responsibility.
Ryosuke wasn't born Uchiha, but his chakra was modified—amplified. His spiritual constitution had been forged through hardship, experimentation, and raw will. Still, the Rinnegan's demand was nearly unsustainable.
He thought of Kakashi. The way he had to seal his Sharingan behind a forehead protector. The way he had to rely on ninken and tactics to compensate for his draining eye. Even so, Kakashi became the Sixth Hokage. His willpower had defied biology.
But Ryosuke was not merely enduring the Rinnegan. He was evolving through it.
Still, the burden was immense. Using Rinnegan required mastery over Yin and Yang Release—spiritual energy and physical vitality in harmony. The Sage of Six Paths, Hagoromo Ōtsutsuki, divided this power between his sons: Indra (spiritual power, Yin) and Asura (vital force, Yang). Without this equilibrium, no one could truly master Rinnegan.
No wonder Nagato never unlocked the full spectrum of its power. Even with the Uzumaki's longevity, he was a vessel—not the master.
And Ryosuke… Ryosuke walked a razor's edge.
"Is this the price?" Ryosuke muttered, hand brushing the cool glass. "The price of holding the eye of a god?"
His reflection stared back. One normal eye. One rippling with divine fury.
This eye—this so-called "Fairy's Eye"—was no myth. It was the culmination of generations of battle, loss, and manipulation. Just like the Sharingan lured Danzo, Orochimaru, and countless others, the Rinnegan was a siren call for gods and madmen alike.
Ryosuke's thoughts sharpened. Madara used Nagato because he needed a puppet. A disposable carrier. If Nagato died, the eye could be reclaimed. But with me? He fears I might surpass him.
This was why Madara's specter still loomed—why Black Zetsu remained active. The original plan: collect the Tailed Beasts, revive Madara via Rinne Tensei, make him the Jinchūriki of the Ten Tails, then cast Infinite Tsukuyomi.
But what if the Rinnegan host refused?
What if the plan derailed?
That's where the Uchiha "heir" came in.
Madara gambled that only an Uchiha could restore order. And now, Ryosuke stood outside that equation.
Still, the parallels were undeniable.
If Kakashi was a genius non-Uchiha who awakened the Mangekyō, then Ryosuke was an anomaly—a non-Uchiha using Rinnegan and living through it. Perhaps it was his unique chakra constitution. Perhaps it was the training under Orochimaru, the infusion of multiple chakra natures, or even the recent awakening of Senjutsu pathways.
But one thing was certain: Ryosuke was not Nagato.
He didn't intend to become anyone's puppet.
Inside his body, the balance of Yin and Yang pulsed with each heartbeat. He could feel it—an unstable equilibrium. The more he pushed, the more likely his life would burn out. But to walk the same path as the Sage of Six Paths, he had no choice.
"I understand now," Ryosuke whispered. "The eye… it isn't just a tool. It's a gate."
Practice was the only standard of truth. The Uchiha knew this. Orochimaru lived by it. And now, Ryosuke did too.
Behind him, the glass rattled from the pressure of his chakra. The air grew heavy. His body trembled slightly—not from fear, but the overwhelming realization:
He was now part of the final war.
In this moment, Mizuki Ryosuke understood not only Madara's plan, but why the gods of the shinobi world feared the eye. It was the power to create, to destroy, to rewrite reality.
And now, it was his.
JOIN MY PATREON YO READ ADVANCE 100+ CHAPTERS
Patreon.com/Kora_1