Gritting his teeth, he lifted his head and met Arata's gaze directly.
When Arata had previously copied Kakashi's ocular power, he had already activated this connection once. He knew the process well.
The moment their eyes locked, Arata focused his Mangekyō, channeling his ocular power toward Kakashi's Sharingan.
Of course, this worked only because Kakashi allowed it.....without his consent, even Arata's Eternal Mangekyō couldn't have influenced it.
Their gazes linked—Mangekyō to Sharingan.....and a silent current pulsed between them.
The tomoe in Kakashi's eye began to spin, faster and faster, until it blurred into a whirlpool of scarlet light.
Kakashi felt it....his Sharingan straining against a boundary, then suddenly shattering through it. Heat surged through his left eye.
The world around him shifted in an instant, like a man who had been near-blind finally putting on a perfect pair of glasses.
Every detail, every movement, every shimmer of chakra came into focus.
And within that clarity, he sensed something new...a mysterious force slumbering deep within the eye.
It wasn't ninjutsu or genjutsu, but something older, stronger... a power uniquely its own.
Then Arata's earlier words echoed in his mind, and Kakashi understood.
This was the Mangekyō's personal ocular ability...its exclusive jutsu.
Just then, Arata weaved a quick string of hand seals. "Water Style: Water Wall!"
A shimmering wall of water rose between them, smooth as glass. Its surface rippled faintly, forming a mirror.
"Look," Arata said with a faint smile.
Kakashi turned toward the watery reflection...and froze.
His Sharingan had changed. The familiar three tomoe were gone, replaced by an intricate new pattern....shaped like a three-bladed windmill, elegant yet menacing.
It pulsed faintly with a power that sent a chill down his spine.
When Arata saw Kakashi finally grasp what had happened, he slowly released his chakra.
The spinning Mangekyō in his eyes faded, and the connection between them snapped.
Kakashi immediately felt his own Mangekyō's energy ebb away.
The world dimmed; that perfect clarity retreated.
The strange power lurking within him fell silent again, and soon, his eye reverted back to its original three-tomoe form.
Arata waved a hand casually, dispersing the water wall. His voice carried a hint of laughter.
"So? You felt the power of the Mangekyō and its unique jutsu, didn't you? Do you believe me now?"
Kakashi remained silent for a moment, staring at his reflection in the fading puddle. He felt an odd sense of loss.
That brief surge of power had been intoxicating—a glimpse of something greater.
To have it vanish so quickly left him strangely hollow.
But when he looked back at Arata, he managed a faint smile and nodded firmly. He believed him completely now.
"Good," Arata said with satisfaction. Then his expression sobered once more.
"I've never encountered a case like yours before. Even within the Uchiha, Mangekyō eyes are exceedingly rare.
I never imagined that the Sharingan Obito gave you would evolve to this stage. I can't even tell how it happened."
Then his tone turned grave, carrying a quiet warning.
"Kakashi-senpai, under normal circumstances, as the Uchiha clan's vice leader, I could never overlook a Mangekyō Sharingan existing outside our bloodline.
But right now, our clan is preparing to leave the village....troubles are piling up.
And since this eye was already given to you with the Third and Fourth Hokage's approval, reclaiming it would only cause political chaos.
So, for now, I'll pretend I know nothing of this."
He fixed Kakashi with a stern gaze.
"But listen carefully....never reveal that this eye is a Mangekyō.
If word spreads, even I may not be able to protect you.
The elders would demand its return, no matter the cost."
Kakashi's eyes widened slightly. He hadn't expected such candid honesty.
But after a moment of thought, he realized Arata was right.
If it had been just an ordinary Sharingan, the Uchiha clan could have overlooked it out of respect for the Hokage.
But a Mangekyō Sharingan....that was different.
A treasure of the clan. If the elders learned of it, they'd stop at nothing to reclaim it, even if it meant bloodshed.
Understanding that, Kakashi felt a deep sense of gratitude toward Arata.
It wasn't the power of the eye he was grateful for....it was the chance to keep the last piece of Obito he had left.
He straightened his posture and bowed his head slightly.
"Uchiha Arata," he said sincerely, "thank you. Don't worry...I'll keep this secret. No one will know."
Arata gave a faint smile, eyes glimmering with quiet approval.
He said nothing more.....but in that moment, the bond of trust between the genius of the Uchiha and the Copy Ninja of Konoha silently deepened.
Uchiha Arata was quite pleased with how cooperative Kakashi had been.
He had chosen to leave that Mangekyō Sharingan with Kakashi for two reasons.
First—to see whether Kakashi, after discovering the eye's hidden power "Kamui" years earlier than in the original timeline, could sense the shadow manipulating events from behind the scenes....Uchiha Obito.
And second, well… since Arata still hadn't tracked Obito down, he figured he might as well have some fun.
Every time Kakashi used Kamui, Arata could toss a few jutsu into the dimensional space just to "test the waters.
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