There was indeed a fight unavoidable between the two of them. Zetsu looked closely at Uchiha Itachi, wondering what his plan was.
The challenge to fight was likely sent by him, and he had indeed been here for two days.
Uchiha Itachi had never liked Zetsu much, probably because he had monitored his clan members before and hated the feeling of being watched.
Every move was under someone else's gaze, unable to fully express his emotions or act freely.
However, he had managed to be careful all these years, and at this final moment, there wouldn't be any exposed weaknesses.
Sasuke probably wanted to call him "brother" but swallowed the word and instead coldly and fiercely called out Uchiha Itachi.
There was no backing down, nor any intention to let it slide. A private fight changed its nature when people were watching.
"I've already made it very clear in the letter. Since you're here, there's nothing more to say, right?"
Uchiha Itachi sat on the chair with a slightly proud expression.
He rested one hand on the armrest, propped his cheek, and looked down at Sasuke in front of him.
His long eyelashes drooped, concealing his crimson eyes, which appeared exceptionally striking.
In the letter, a challenge letter?
Zetsu's gaze flickered between the two. Although he knew Itachi had prepared things here, he hadn't seen him write a letter at all.
As expected, their presence here had long been noticed by Uchiha Itachi. Was it unavoidable even if they tried their best to hide their presence?
Black Zetsu's gaze flickered. White Zetsu seemed uninterested in letters and was still watching the two below with great anticipation.
"Ah, the matter between you and me should also be settled."
Sasuke suddenly raised his eyes, his pitch-black pupils instantly stained crimson, and his three-tomoe Sharingan was clearly displayed.
An almost invisible gust of wind swept by, and then Uchiha Itachi's figure instantly appeared next to Sasuke.
A kunai hidden within the Akatsuki robe suddenly emerged and flicked towards Sasuke to the side with a swift motion.
Starting with a genjutsu, one could say it was worthy of Itachi's style.
However, Uchiha Itachi's genjutsu had been used on Sasuke the most, so it was natural that Sasuke could handle it.
Sasuke lifted his robe, took a small step back, and firmly blocked the falling kunai with the Kusanagi Sword.
With a crisp "Ding~ clang," their faces were reflected in the cold light cast by the Kusanagi Sword.
Uchiha Itachi's face flashed, then he forcefully pressed the kunai down and sprang up, kicking at Sasuke twice in a row.
The Kusanagi Sword was not originally a defensive blade. Its slender blade could attack swiftly but could hardly withstand an enemy's attack.
Sasuke was kicked back two steps and pulled away the Kusanagi Sword that was pressed by the kunai.
Uchiha Itachi, with almost no hesitation, grabbed Sasuke's collar to support himself and then kicked at Sasuke's wrist.
With a crisp "Ding," the Kusanagi Sword was kicked flying. After the blade scraped against the ground with a few noisy sounds, it finally stopped.
As soon as the Kusanagi Sword left his hand, Sasuke quickly formed hand seals.
"Chidori Stream."
Sasuke frowned slightly, instantly gathering Chakra around him, and the blue electric light made crackling sounds.
Not only Sasuke's hands but also his entire body emitted bursts of blue electric light.
Uchiha Itachi let go and violently retreated the moment the bright blue electric light flashed.
As he retreated, Sasuke's figure suddenly appeared on the rooftop, still holding the Kusanagi Sword that had been kicked away earlier.
Taking advantage of his retreat, Sasuke was able to pick up the Kusanagi Sword that had rolled away; such a thing was clearly impossible.
He already realized this was a genjutsu.
Uchiha Itachi's thoughts paused slightly, but it was also certain. Sasuke had fallen victim to so many Tsukuyomi.
Uchiha Itachi often used a regular genjutsu on him for training, and if, in such training, Sasuke couldn't even distinguish a genjutsu, it would be quite unacceptable.
The tip of the Kusanagi Sword, flickering with electricity, pointed directly at Uchiha Itachi. Although the Kusanagi Sword had sacrificed its defensive ability, it was perfectly fine in terms of offense. Accompanied by lightning-type Chakra, it directly pierced Uchiha Itachi.
With a dull thud, Uchiha Itachi was firmly pinned to the ground, and blood seeped from the blade of the Kusanagi Sword.
Sasuke stood up by bracing himself with the hilt of the Kusanagi Sword and pulled it out of Uchiha Itachi's body on the ground without mercy.
Blood droplets continued to roll off the blade. Sasuke looked up indifferently at Uchiha Itachi, who was still sitting on the chair.
As expected, he hadn't moved at all.
As Sasuke looked at Uchiha Itachi on the chair, the corpse lying on the ground suddenly let out a rather eerie and hoarse crow's caw.
"Ugh—"
Then, a flock of crows squeezed out of the corpse on the ground.
"This level of genjutsu is no longer effective against me. If you want to test me, don't use this level of technique."
Sasuke slightly shook off the imaginary blood droplets from the Kusanagi Sword and turned to look at Uchiha Itachi on the chair.
There was a hint of pride on his face, as if he was proud that he could now do this.
Uchiha Itachi remained as impassive as ever. For him, this was just to test Sasuke's abilities.
If he couldn't even see through this genjutsu, he shouldn't have come to fight him; he might as well have gone back, lest there be a camera-like thing above his head.
"Completely still..."
At this moment, Zetsu, who was working as a cameraman on the wall, looked at the two. White Zetsu sighed, seeming a little bored.
He had thought he would see a fierce battle, but instead, he just saw the two standing facing each other.
After all, even if they were fighting fiercely within the genjutsu, to the two of them, these two brothers were just standing on the ground and staring at each other motionlessly.
"Since it's using genjutsu, they should test each other's strength first."
Black Zetsu wasn't in a hurry. Anyway, the Uchiha Clan was best at using genjutsu, so it was normal for them to fight in genjutsu.
Although the two of them were watching the show here, genjutsu only needed to see the final outcome, and there was no need for detailed analysis.
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