Kakashi was stunned for a moment.
Then he raised his hand, and in his palm appeared a Rasengan.
When Naruto saw this sphere, curiosity flashed in his eyes.
Kakashi looked at Naruto with a somewhat complicated expression.
He pressed the Rasengan down onto the ground, and instantly a pit was blasted out.
Rengoku curled his lips, "This power is way too small. You'd better teach Sasuke Chidori."
"If Sasuke learns Chidori, I won't bother arguing with you about your eyes."
"Yes, Elder Rengoku," Kakashi answered honestly.
After all, with the Anbu standing nearby, he still had to put on an act.
"Sasuke, this jutsu is very suitable for you. Learn it well," At Rengoku's command, Sasuke's eyes lit up as he looked at Kakashi.
Kakashi formed hand seals, lightning chakra surging wildly.
Blinding white light burst forth in Kakashi's hand, accompanied by a sizzling sound like birds chirping.
"Raikiri!"
Kakashi charged forward at full speed toward the target ahead.
Crack!
The target instantly shattered.
Without stopping, Kakashi's steps carried him further, piercing a hole into a tree behind before he finally halted.
This ninjutsu, filled with such dazzling sound and light effects, in Sasuke's eyes could only be described in two words: So cool!
Rengoku explained from the side, "This jutsu's current is so strong it produces a sound like a thousand birds crying, hence the name Chidori."
"But Kakashi once cut through lightning with this move, so he calls it Raikiri."
Sasuke's mouth opened slightly, "Cut through lightning? It's that strong?"
Rengoku tapped Sasuke's forehead with a finger, "Stupid, of course not. That was Kakashi bragging. I told you to read more books, but you don't."
"Don't you even think about how fast real lightning falls, what kind of thing lightning actually is, how could ninjutsu cut it apart?"
"Uh… I'm sorry, Shishou, I was wrong," Sasuke covered his forehead, feeling a little stupid himself.
Just then Kakashi walked back, hearing this. He opened his mouth but didn't know how to refute.
"But this jutsu really does suit you. Even though the clan has the Chidori, learning it directly from its creator will naturally be faster."
Sasuke asked curiously, "The clan also has this jutsu?"
Rengoku replied, "Kakashi's Sharingan comes from our Uchiha clan, and he also passed Chidori to us, so our clan has had Chidori for years."
"But there aren't many lightning-nature experts in the clan, so no one chose to practice Chidori."
Normal people's chakra is actually limited, as long as it's enough for ninjutsu, that's fine.
After all, just fire release alone was enough for the Uchiha.
"Then Shishou, am I really suitable?", Sasuke had always used fire release, but had never touched lightning release.
Rengoku made an ok gesture, "Don't worry, you're suitable."
Saying that, he handed Sasuke over to Kakashi.
"Naruto, come here, I'll teach you the Rasengan Kakashi just used."
Naruto glanced toward Kakashi's side, "Principal, Rasengan's power doesn't seem as strong as Chidori."
Rengoku waved his hand, "That's only because Kakashi has little chakra."
"The Rasengan was created based on the principle of the Tailed Beast Bomb, so the more chakra you put in, the stronger it becomes."
"And this is a no-seal ninjutsu, best suited for a ninja like you who makes shadow clones and gang-fights others."
"While fighting, just raise your hand and throw out a Rasengan."
Naruto imagined it. When his shadow clones all rushed together, each one raising a hand to release a Rasengan.
"That looks awesome!", Naruto's eyes shone. He really liked simple things.
Like the Shadow Clone Jutsu and Multiple Shadow Clone Jutsu, they only needed a single seal.
"Use your talents reasonably, don't just suffer pointlessly. Sasuke has strong lightning nature, so he learns lightning release."
"You have a huge amount of chakra, so you learn Rasengan."
As Rengoku spoke, he took the water balloon Naruto had brought over.
"Before, climbing trees was to make you maintain chakra at the necessary point."
"Training to walk on water was to force you to continuously release a fixed amount of chakra."
"Combine both, and release it from the palm."
As he spoke, the water balloon in Rengoku's hand began to ripple.
"Naruto, what's your family name?"
Naruto stared at the balloon that kept bulging and instinctively answered, "Uzumaki."
"Right, whirlpools rotate water currents to produce powerful force."
"Then, a chakra whirlpool…"
Pop!
The balloon suddenly burst in Rengoku's hand.
"The hard part of this jutsu is controlling the chakra's rotation."
"When forming chakra, you must mix energy. No matter who it is, they instinctively spin energy inside their body to create chakra."
"Each person's energy rotation direction is either left or right."
"If you rotate in the wrong direction, the chakra's flow will break up and interfere with itself."
This was all simple knowledge, and Naruto immediately understood, "Then Principal, how do I check which way my energy rotates?"
Rengoku pointed at Naruto's head, "Look at the direction your hair swirls."
"Mm, yours is clockwise."
Naruto touched his own hair. He had never noticed before.
"Principal, so now I practice starting with water balloons?"
Rengoku shook his head, "Forgot the shadow clone knowledge I taught you before?"
Naruto slapped his head, "Oh right! Shadow Clone Jutsu!"
Bang! Bang! Bang!
After a puff of smoke, ten Narutos appeared.
"Now everyone start practicing with water balloons!"
"Yeah!"
Naruto threw himself into training with fiery enthusiasm.
Rengoku wasn't idle either. He raised his hand, and a Rasengan quickly formed.
He had just learned it.
Learning sealing jutsu required extremely fine chakra control.
So when he turned around to learn Rasengan, he grasped it instantly.
While Naruto was struggling with the water balloons, Sasuke on the other side was sprinting back and forth nonstop.
To increase Chidori's power and hit rate, this was necessary training.
Meanwhile, the nearby Anbu had already quietly reported to the Third Hokage.
———
[Hokage's Office]
"Rengoku is teaching Naruto Rasengan?"
"And Kakashi is teaching Sasuke Chidori?"
Upon receiving the report, the Third Hokage narrowed his eyes.
As the ninja academy principal, Rengoku had set up the elite class and even arranged for his people to train them.
The Third Hokage already understood Rengoku's intentions.
Now he was directly bestowing favors on Naruto, which made the Third Hokage feel immense pressure.
Moreover, Rasengan was created by Naruto's father, the Fourth Hokage, Namikaze Minato.
The Third Hokage suspected that Rengoku intended to use this as the starting point, ready at any moment to reveal Naruto's identity.
Compared to the first piece of news, the second was far less important.
The Anbu repeated all of Rengoku and Kakashi's conversation.
Naturally, the Third Hokage also knew that Rengoku had, by virtue of Kakashi's Sharingan, let him teach Sasuke Chidori.
He wondered whether Kakashi would come report himself.
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