Without the cursed seal chakra boost, it was purely Sasuke's own chakra.
Although Sasuke's chakra had increased significantly, and his control over three nature transformations had strengthened his power, it was still no match for Naruto's tailed beast chakra.
However, Sasuke didn't retreat.
He continued to swing his Chidori, crashing it toward the Rasengan that Naruto had released.
When the lightning and the rapidly spinning chakra collided, a loud boom echoed. However, this time, Sasuke's Chidori was easily overwhelmed.
Crack!
Sasuke was sent flying backward.
The powerful impact made Sasuke lose his balance mid-air, causing him to spin wildly for several meters before regaining his footing.
He slid back nearly ten meters before gradually coming to a stop.
Looking at the cloud of dust rising from the ground, Sasuke stared toward Naruto.
"The power of tailed beast chakra... It's not something that can be blocked just like that!"
Even though Sasuke knew he wasn't a match for Naruto, he still continued because he wanted to experience firsthand the true power of tailed beast chakra.
Now, he had truly felt it.
Sasuke glanced at his arm, relieved that he wasn't injured.
He looked up!
Naruto was rapidly charging toward him.
"Sasuke… You're not as strong as you were during the Chuunin Exams!"
"What's wrong? Aren't you going to use that power of yours?"
Whoosh!
Naruto's attack was easily dodged by Sasuke.
Turning to look at Naruto, who had charged up behind him, Sasuke smirked. It seemed like Naruto could feel the power of the cursed seal.
However, against Naruto in his current state, the cursed seal's effect wasn't as effective as a lightning-fast strike.
What Sasuke wanted wasn't to defeat Naruto, but to… anger him.
"No need!"
"Even now, you still can't touch me, can you?"
"Do you need even stronger power to deal with me, Naruto?"
As Sasuke spoke, Naruto had already turned around and was charging back.
He threw a punch toward Sasuke's face, but unfortunately, Sasuke was faster. With the Mangekyou Sharingan, he easily dodged Naruto's attack.
His heightened perception allowed Sasuke to almost effortlessly see every move Naruto made.
He even predicted Naruto's next actions.
And Naruto's chakra-enhanced attacks were also under his control.
In this situation, Sasuke had nothing to worry about.
However, hearing these words, Naruto's expression darkened further.
His attacks became more frantic as he swung his chakra hands, seemingly trying to prove that he could hit Sasuke.
But Sasuke, wielding the Kusanagi Sword, calmly struck again and again, slashing at Naruto.
Though the sword couldn't break through Naruto's chakra cloak, each small jolt of lightning carried a numbing effect, irritating Naruto's nerves.
No matter how fast or unexpected Naruto's attacks were, no matter how much he seemingly cornered Sasuke, Sasuke still managed to dodge them with bizarre agility.
His casual manner only made Naruto's anger grow stronger.
Sasuke raised his Kusanagi Sword slightly, and with a horizontal slash, easily cut through Naruto's chakra hand.
Then, using the blade to block Naruto's punch, Sasuke spun and evaded a series of follow-up attacks.
To Naruto, Sasuke's behavior felt like this whole battle was a game.
Despite Naruto unleashing everything, Sasuke still wasn't taking it seriously.
It was as if Sasuke had never been fully engaged from the start.
The more this happened, the more Naruto's fury boiled over.
"Why… why did you leave Konoha?!"
"Why… why are you so strong?!"
"Damn it… I've already mastered this kind of power!"
"Am I always going to be the weak one… always going to disappoint everyone?!"
Naruto's eyes gradually turned red.
This was exactly the reaction Sasuke wanted.
"Let your rage out! Let the Nine-Tails chakra go wild!"
Sasuke was preparing to add fuel to the fire!
The next moment, lightning vanished instantly.
Naruto's attack surged toward Sasuke, with two enormous chakra hands coming from each side, slamming down on Sasuke.
Even before they made contact, Sasuke could already feel the intense air pressure pushing against his face.
When Naruto saw the lightning around Sasuke disappear, he was momentarily stunned.
But he didn't know what Sasuke was planning to do.
Whoosh!!!
Naruto's chakra hands were about to strike Sasuke.
Suddenly, Naruto noticed Sasuke's breathing.
This strange breathing seemed unusual.
At that moment, Sasuke suddenly looked up.
He swiftly drew the Kusanagi Sword from his waist.
"Breath of Thunder!"
"First Form!"
"Thunderbolt Flash... Divine Speed!"
This move is the most powerful strike in the First Form of the Breath of Thunder.
The speed is an extreme burst, and the power of this attack is equally astonishing.
However, the side effects are severe; if used more than twice in a row, Sasuke's legs might be permanently damaged.
In that instant.
Naruto's movements were almost nonexistent to Sasuke.
It was as if time had stopped.
Kusanagi Sword!
The Kusanagi Sword, imbued with thunder, instantly appeared before Naruto's eyes.
Seeing the blade glowing with lightning, Naruto's eyes slightly narrowed.
In the next moment, the sword slashed fiercely across his chest, cutting from his left shoulder to his right ribs.
Sasuke's figure passed by Naruto's.
A streak of thunder erupted from Sasuke's previous position, extending all the way behind Naruto.
Crack!
The instant the thunder roared, Sasuke stopped and slowly sheathed the Kusanagi Sword.
Naruto stood there, stunned, realizing that his attack had completely missed.
He looked down.
A sharp pain struck his chest, and a red blood mark appeared.
Although the wound wasn't deep, it was quickly healing thanks to the Nine-Tails chakra.
Yet, this strike deeply impacted Naruto once again.
"How could this be…?"
Nearby, Jiraiya, who was watching the fight, was equally shocked.
"Is that the forbidden technique, the Breath of Thunder?"
"It's even faster than last time…"
If Jiraiya had thought the first time was comparable to the Eight Gates Forbidden Jutsu, now he felt that the Breath of Thunder might eventually surpass the Eight Gates in Sasuke's hands!
"No! I can't let Naruto face Sasuke alone…"
Jiraiya's expression turned serious.
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