Its true name was known to few, and the world simply called it—
The Three-Tails.
"Decisive! I thought there would be a chance to launch a sneak attack."
Uchiha Rēn sighed with regret. But truthfully, Kamui's ability was too difficult to counter; without absolute certainty, he would never rashly reveal his own dōjutsu. Otherwise, when Uchiha Obito first appeared, Rēn would not have used Susanoo to attack.
At that time, the distance between them was entirely sufficient for him to use Konohana-Sakuya.
However, he was uncertain how effective Konohana-Sakuya would be against another Mangekyō Sharingan wielder like Uchiha Obito. If it couldn't kill or cause irreversible damage in one strike, using it would only drive Obito further into hiding.
Therefore, he chose to wait, looking for a better opportunity.
At this moment, he looked up at the imposing, mountain-like Three-Tails. His gaze fell on the beast's single open scarlet eye, and he sincerely murmured, "Beautiful."
Naturally, he was not praising the Three-Tails itself.
Uchiha Rēn was admiring the beast's eye—this disaster-like creature also had to submit to the Uchiha clan's Sharingan. No wonder the clan carried such arrogance. Even Rēn himself could not help but take pride in this power.
The Three-Tails lowered its head, looking at Uchiha Rēn, who was protected by the deep crimson ribcage form of Susanoo.
"Roar!"
The Three-Tails let out a furious roar.
Its consciousness did not currently control this body; Obito was the true master. But, as if by instinct, upon seeing Rēn's Sharingan and the deep crimson Susanoo, its body trembled in anger.
Another Uchiha. Another set of those cursed red eyes!
Chakra surged and gathered.
A pitch-black Tailed Beast Ball appeared before the Three-Tails, swelling rapidly and preparing for launch in an instant.
Uchiha Rēn merely watched the Three-Tails eye silently, unmoving as stone.
The battle had already begun.
Genjutsu: Sharingan
This did not refer simply to the Sharingan itself.
It was genjutsu.
The Uchiha clan's most powerful illusion technique under the Mangekyō Sharingan, pushing the "hypnotic eye" ability of the Sharingan to its absolute limit. With just eye contact, one could project their ocular power directly into the opponent's will, seizing control of their body or disrupting their actions.
If pushed to its peak, even controlling a tailed beast was possible.
Just like now.
The Three-Tailed movements halted!
The Tailed Beast Ball, which had been ready to launch, gradually dissipated, transforming back into pure chakra that returned to the Three-Tailed body.
At this point, the battlefield no longer existed in the outside world.
This was now a clash of spiritual wills.
"This is the space where the Three-Tailed consciousness is sealed. Truly a cramped, dark, unpleasant cage." Standing ankle-deep in stagnant water, Uchiha Rēn looked up to see a ceiling as dark as stone or iron. The surrounding darkness was enclosed by similar walls.
Then, he turned his gaze toward the iron cage ahead.
However, he was not looking at the Three-Tailed, which sat motionless inside.
"Hey, the one claiming to be Uchiha Madara—you should show yourself now, right? We've come this far and you're still hiding. That only makes it harder to believe you're really that Uchiha Madara."
"Hmph! Arrogant brat. I've already said I have no need to prove my identity to anyone." Masked Uchiha Obito appeared atop the Three-Tailed's head, looking down at Rēn standing in the water. The contempt in his gaze was unmistakable.
"Is that so? It doesn't matter. Whether you are or aren't changes nothing between us. As long as I deal with you, most of these problems will be resolved."
"Deal with me, Uchiha Madara?"
Uchiha Obito laughed, his laughter full of arrogance and conceit. He looked at Rēn and said, "If you think you can, then by all means, try!"
Then,
Rēn narrowed his eyes slightly.
Demonic Illusion: Shackling Stakes
In this spiritual world, it was a stage where the Uchiha clan's genjutsu could shine to the fullest. Massive iron stakes appeared out of nowhere, piercing into Obito's limbs. The real, unmistakable pain deeply stimulated Obito's nerves.
"Not bad."
Obito twisted his neck and passed through those iron stakes as if moving through shadows. Behind him, the stakes fell onto the Three-Tailed's head and disappeared like illusions.
"But if this is all you can do, you won't be able to kill me."
As he spoke, flames suddenly appeared on Rēn's body. Blazing fire wrapped around his limbs and burned fiercely. Even though his feet stood in ankle-deep water, Rēn felt as if they were burning in an inferno—his flesh charring, his skin scorched, his bones almost boiling.
So this is what it felt like to be burned!
He had always been the one to set others aflame. This was the first time he experienced the pain of being burned himself.
Demonic Illusion: Shiranui (Unknown fire)
This was Obito's counterattack.
"Whether you are Uchiha Madara or not, this ocular power… is indeed strong."
Rēn acknowledged sincerely as he endured the burning pain.
This was his honest sentiment: Obito's genjutsu was extraordinarily powerful—whether it was due to his talents being cultivated by Madara or the changes from merging with White Zetsu's body. His genjutsu was truly formidable: controlling the Nine-Tails, controlling the Three-Tails jinchūriki Yagura…
The flames burned ever more fiercely, but the look of pain on Rēn's face gradually faded. In the end, he simply raised a hand and lightly patted himself, extinguishing the flames completely. There was not a single burn mark on his body.
This was the spiritual world. All harm here was inflicted on the mind. Victory depended on the strength of one's spirit.
When the Uchiha clashed in genjutsu, it ultimately came down to a contest of ocular power. Unless a technique was truly flawless, a duel between two Uchiha with three tomoe often devolved into a test of sheer dōjutsu strength. As long as the ocular power was sufficient, these genjutsu attacks could not truly harm them.
Just like how Obito had broken free from Shackling Stakes.
And just like how Rēn had patted out Shiranui.
This was clear proof.
"Let's see why you would dare masquerade as my ancestor!"
Demonic Illusion: Endless Swamp
Demonic Illusion: Dragon Sleep Technique
Demonic Illusion: Mirror Heaven and Earth Change
Demonic Illusion: Bubbles
Ordinarily, an outsider could scarcely perceive the intricacies of a genjutsu duel—especially when the Uchiha were involved. Their illusions began and ended in mere moments; before anyone could see clearly, their enemy had already fallen.
But now, observing this dazzling genjutsu battle unfold in the spiritual world was a rare spectacle even for Yagura's consciousness.
If not for his own miserable condition, he might have applauded!
"Uchiha… truly a terrifying clan."
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