The battle could already be declared over the moment the dense fog swallowed everything.
Vision was sealed to a range of less than one meter.
Sound dispersed and vanished once it traveled more than five meters.
Even when shinobi skilled in Wind Release used ninjutsu with all their strength, they could only barely blow away a little of the fog shrouding the area. Then, the surrounding mist would immediately surge into the cleared space and envelop everyone once again.
No one could fight an enemy who possessed senjutsu under such an extreme disadvantage.
Even if some among them carried the Uchiha name and had awakened the dojutsu that reflected the heart—the Sharingan—it was still impossible.
Rei Kaguya strolled leisurely through the deathly silent fog he had created, easily killing all the Konoha shinobi apart from those of the Uchiha clan.
After that, he broke the limbs of the Uchiha jonin who tried to resist. Using Earth Release: Double Suicide Decapitation Technique, he firmly trapped them in the ground.
Then, Rei Kaguya walked up to the last two Konoha shinobi who were still standing.
"The head of the Uchiha clan, Fugaku Uchiha. And Shisui Uchiha, who recently earned the title Shisui of the Body Flicker, right?"
Fugaku Uchiha gripped the kunai in his hand tightly, shielding Shisui Uchiha, who was far from fully grown, behind him.
His pair of Mangekyo Sharingan stared fixedly at Rei Kaguya as he appeared from the fog, maintaining a posture that seemed ready to launch a desperate strike at any moment.
"I never expected… our luck would be this bad."
"Is that so? I think your luck is pretty good."
Rei Kaguya placed his gaze on Shisui Uchiha, who still looked completely like a child, and answered casually,
"Although I planned to give you Konoha shinobi an unforgettable lesson as a parting gift, I have no intention of forming an irreconcilable blood feud with the Uchiha clan…
"So, including you and this brat, all of you can return to Konoha with your bodies intact. Happy?"
"Who would believe your words!?"
Fugaku Uchiha gritted his teeth.
The Mangekyo Sharingan in his eyes erupted with astonishing light as he activated the Mangekyo dojutsu residing in his right eye against Rei Kaguya, who was right in front of him.
Sole Self Cognition.
It was a genjutsu-type dojutsu somewhat mismatched with Fugaku Uchiha, who specialized in ninjutsu.
Its effect was to construct a small genjutsu world using the information he knew. After pulling the target inside, time within the genjutsu world would rapidly advance in the direction expected by the caster.
Then, after the target experienced the amount of time the caster had set inside the genjutsu world, everything in that entire illusion would launch an attack against the target.
The terrifying part of this technique was that the mental damage suffered inside the genjutsu world would be reflected onto the physical body outside.
And because the entire genjutsu world was under Fugaku Uchiha's control, he could even forcibly create adult versions of Shisui Uchiha and Itachi Uchiha possessing Mangekyo Sharingan by investing a large amount of chakra.
Although, due to a lack of information and the incompleteness of the genjutsu world, the two Uchiha advanced to adulthood by the fast-forwarded illusion world did not possess their exclusive Mangekyo dojutsu, the addition of two Uchiha skilled in genjutsu was absolutely enough to completely crush an enemy already struggling to move within the genjutsu world.
"Hmm. So this is the future world reflected by your Mangekyo Sharingan?"
Looking at the Hokage Rock in the distance, where the faces of Shisui Uchiha and Itachi Uchiha were carved, then at the other Konoha ninja clans in the surroundings who all followed the Uchiha clan's lead, Rei Kaguya sighed in slight disappointment and shook his head as he criticized,
"Not good enough. The bearing of the Uchiha clan head…
"You actually think that with two imagined Mangekyo Sharingan wielders and most of Konohagakure lacking agility and autonomy, you can challenge me?"
Fugaku Uchiha's ambition was not limited to this.
But his chakra reserves truly did not allow him to fill the genjutsu world with more detail.
"Go."
Standing behind the phantoms of Shisui Uchiha and Itachi Uchiha, Fugaku Uchiha gasped heavily as he ordered,
"Let that guy witness the power of the Uchiha clan!"
"Ooooohhh!"
Hyuga, Senju, Sarutobi, Shimura, Aburame, Nara, Akimichi, Yamanaka, Yuhi, Uzumaki…
The members of Konoha's famous clans released an incomparably unified battle cry.
Then, under the leadership of the Uchiha clan's jonin, they activated their respective secret techniques and Kekkei Genkai, charging toward Rei Kaguya, who stood alone, like an endless tide.
"Fire Release: Dragon Flame Release Song!"
"Fire Release: Great Dragon Fire Technique!"
The phantoms of Shisui Uchiha and Itachi Uchiha rushed at the front, forming Fire Release hand seals at dazzling speed.
Then, the two who had grown up together since childhood spat out raging flames that surged like mountains and overturned seas.
Using the glow of the flames, they appeared behind Rei Kaguya with the Body Flicker Technique and launched a coordinated attack with the Uchiha clan's secret shurikenjutsu.
"Sage Art: Inorganic Reincarnation."
Rei Kaguya clapped his hands together.
The ground beneath his feet immediately came alive with incredible agility.
Rampaging stone spikes forced the two Uchiha "Hokage" to retreat, making them give up the chance to launch the first attack.
Then Rei Kaguya bit his finger, slammed his hand onto the ground, and shouted,
"Summoning Technique!"
Manda, with dragon horns on his head and fatal poison in his fangs.
Garaga, with red scales, one eye, and petrifying venom in his mouth.
The two giant snakes known as the most ferocious and insane summons in Ryuchi Cave descended here.
With a single charge, they smashed the Konoha shinobi, who lacked flexible change, into complete disorder. Their destructive power was so great that even the two Uchiha "Hokage" had no choice but to turn back and defend.
"That is… Manda!?
"Why? Why would even Orochimaru's summon obey you!?
"In the world of Sole Self Cognition, you should only be able to use abilities you already possess in reality!"
Seeing Manda's massive body rampaging across Konoha's land, Fugaku Uchiha widened his eyes and could not help letting out a question filled with incomprehension.
In response, Rei Kaguya merely smiled easily.
He formed the hand seal to activate Sage Mode and answered lightly,
"Of course it's because I'm stronger than him."
Fang-like facial markings appeared. Horns symbolizing transformation into a dragon grew from his forehead.
Rei Kaguya, now transformed into sage form, loosened his neck and turned his entire right arm into a massive bone blade.
Then he grinned at Fugaku Uchiha, whose expression had changed drastically.
"Try your best to hold on a little longer, Uchiha clan head…
"If your Mangekyo dojutsu cannot even let me finish warming up in this form, then those few Uchiha jonin who could have kept their lives and bodies intact will have to say goodbye to this world."
Boom!
A burst of dust larger than the ones caused by Manda and Garaga's attacks exploded outward.
Rei Kaguya's speeding figure was like a god swinging a sword, dragging a deep scar through the earth.
Then, as Fugaku Uchiha suddenly coughed up a large mouthful of blood, Rei used only a single slash to turn nearly half of the Konoha allied force into bubbles scattered across the sky.