A new day.
Team Seven, led by Kakashi, gathered in the training ground.
The sky today was clear once more, the sunlight warm and gentle.
Perhaps due to Kakashi's presence, no ninja were monitoring Naruto today.
This actually made Naruto feel a bit unaccustomed to it.
"The weather is so nice, perfect for a spring outing~~" Sakura closed her eyes, tilted her head up to smell the scent of fresh grass on the breeze, and murmured softly to herself.
"After being accustomed to training that pushes beyond the limits, occasionally relaxing the mind and body is also a good choice." Naruto also closed his eyes and said softly, "Sometimes, a moment of tranquility is enough to heal all fatigue."
"Hmph, let's start training quickly," Sasuke snorted coldly, completely ruining the mood.
"Well then, follow me." Kakashi, still looking like a slacker, created two clones, which then led Sasuke and Sakura away separately.
He would assess Sasuke and Sakura's abilities according to the plan he made last night, and then designate the next steps for their development.
"Naruto, what ninjutsu have you mastered so far?" Kakashi asked Naruto once Sasuke and Sakura were out of sight.
"I'm not particularly skilled in ninjutsu; I know more Kido." Naruto began to form hand seals, demonstrating the ninjutsu he knew.
Only the very basic Three Academy Jutsu and a few Wind Style ninjutsu.
After performing the set of jutsu, Naruto wasn't even flushed or out of breath, and his internal chakra had barely diminished.
Setting aside the Nine-Tails' chakra, Naruto, with his Uzumaki clan constitution, also possessed considerable chakra reserves.
Compared to the "chakra-deficient Kakashi."
The "chakra-tons" Naruto possessed were truly terrifying.
However, Naruto didn't rely on the Nine-Tails' chakra.
After all, it wasn't truly his own power; it could be used in emergencies.
The most important thing was still to increase his own chakra and Reiatsu.
That way, if the Nine-Tails were to leave his body one day, he wouldn't be reduced to a cripple.
After watching Naruto's ninjutsu demonstration, Kakashi couldn't help but feel a bit envious.
Though he was known as Kakashi the Copy Ninja, his own "mana pool" was pitifully small.
After using just a few ninjutsu, he felt completely drained.
This was also related to the Sharingan Obito had given him.
How he wished he could experience the feeling Naruto had—of wantonly expending chakra, feeling completely full and overflowing with it.
"Your Kekkei Genkai is indeed quite good, and you also have Kido, which is similar to ninjutsu, but its power is still insufficient."
"Next, I will teach you an offensive ninjutsu."
"However, you need to be mentally prepared. The training method for this ninjutsu is extremely difficult and requires a vast amount of time to accumulate. You might experience a great sense of frustration." Kakashi began to embellish the difficulty of the ninjutsu.
As the supervising instructor of a genius, Kakashi was already eager to see Naruto's frustrated expression.
At that moment, he would give a slight smile and teach him step-by-step.
"Oh? What ninjutsu is so difficult?" Hearing Kakashi's words, Naruto's interest was immediately piqued.
"A self-created ninjutsu of the Fourth Hokage, the Rasengan," Kakashi stated resolutely.
"Oh, so it's this one."
Minato had long since shared this self-created ninjutsu with Naruto.
It was indeed quite suitable for Naruto.
However, because Naruto was still under surveillance at this stage, he hadn't learned this jutsu from Minato.
He hadn't expected Kakashi to bring it up now.
In that case, he could only respectfully comply.
"Then I'll have to trouble you, Kakashi-sensei."
"Before we begin learning, let's first understand this ninjutsu." Kakashi led Naruto under the shade of a tree and began his instruction seriously.
"The Rasengan is an A-rank, no-hand-seal ninjutsu that my teacher, the Fourth Hokage, spent three years developing."
"The principle is to concentrate chakra in the hand, make it flow continuously in irregular directions, and then compress it, forming a palm-sized, non-elemental chakra sphere." "Next, I'll demonstrate it for you."
Kakashi extended his right palm, facing upwards.
"Voom." A powerful airflow mixed with chakra swirled and condensed in his palm, gradually forming a beautiful small blue sphere.
The energy contained within it was not to be underestimated.
"This is the Rasengan." Kakashi pressed the Rasengan against the trunk of a tree.
"Bang!" Smoke filled the air. A large tree that even an adult couldn't wrap their arms around had a huge hole directly blasted through it.
If that hit a person, wouldn't they be blown to bits?
"Its power is decent enough. At least it can make up for your deficiencies in ninjutsu." Kakashi withdrew his hand, his dead-fish eye still calm.
"A very powerful ninjutsu. Then I'll be in your care, Kakashi-sensei." Naruto elegantly brushed past the tree. The tree slowly toppled, kicking up a large cloud of dust.
Possessing such focused destructive power, it was indeed a decent offensive technique.
"Next, I'll explain the principle to you," Kakashi nodded.
"The most difficult point of the Rasengan is controlling the irregularly flowing chakra, making it form a balanced Rasengan in the palm without injuring oneself."
"This ninjutsu requires extremely high chakra control."
Kakashi broke down the key points of practicing the Rasengan and explained them.
This was the essence he had repeatedly summarized over one night.
"It certainly is difficult. Kakashi-sensei, to be able to explain such a complex ninjutsu so clearly, you've really worked hard." After listening to Kakashi's explanation, Naruto couldn't help but praise him.
He extended his right palm, facing upwards.
"Voom."
Before Kakashi's astonished gaze, chakra flowed and formed a small blue sphere.
"Looks like it's a success." A faint curve touched Naruto's lips as he gently tossed the Rasengan out.
"Bang!" The Rasengan landed on the ground. The chakra swirling within, seemingly gentle, instantly erupted like water dropped into hot oil, churning up the earth and unleashing violent energy.
With a loud bang, smoke filled the air, directly blasting a crater in the ground.
"The power is quite good. But indeed, just as Sensei said, the difficulty of this ninjutsu is very high," Naruto said in an extremely calm tone, as if stating a fact from a god's perspective.
"This..." Kakashi was suddenly at a loss for words, no longer able to maintain his calm, slacker-like demeanor.
The Rasengan is very difficult?
Is it really that difficult?He seemed to have spent a very long time mastering the Rasengan back then.
Those days had been rather painful.
But Naruto, how did he just... Kakashi began to deeply doubt his own talent.
Then he saw Naruto flash a perfect smile, facing the morning sun, extending his right palm.
"Perhaps I can also create a Kido similar to the Rasengan, also by controlling irregular energy."
As his words fell.
A rapidly rotating small white sphere appeared in Naruto's right palm. The terrifying energy contained within it made Kakashi's eyes widen even further.
"Is it chakra? No, it's not just chakra. This is a new development of his Kekkei Genkai!"
Kakashi's expression gradually shifted from shock to numbness.
"Boom!" A large tree was engulfed by the white Rasengan and instantly blasted into flying ash, 'not even bones remained.'
Naruto's magnetic voice echoed in the air.
"Let's call it Seal-less Kido: Shadowless Rasengan."
At the same time, Minato's voice resounded in the seal space: "Innate Infinite Kido's Seal-less Apex: The Infinite, Shadowless, Non-Evading, Daylight-Illuminating Rasengan!"