Konoha: Naruto, trained by Aizen

Finally, when Naruto asked again, Kakashi's mouth twitched slightly beneath his mask, and a look of helplessness appeared in his dead fish eyes: "There's another ninjutsu that suits you. Do you want to learn it?"

"Learn? Why wouldn't you learn? What kind of ninjutsu?"

"Thousand-Year Kill".

From then on, Naruto never sought out Kakashi to learn ninjutsu again.

Kakashi expressed his regret about this.

Imagine that even if Naruto, with a gentle smile, first uses Kyoka Suigetsu to control the enemy's vision, then uses Shunpo to get behind the enemy, and after a series of complex hand seals, uses Thousand Years of Death to enter the enemy's warmest and most vulnerable part.

This is the ultimate ninjutsu tailor-made for his bloodline limit.

pity.

He will not see this scene.

......

Inside the training field.

At Naruto's request, Sasuke prepares to awaken his Sharingan to break the Kyoka Suigetsu.

"Thank you for your help this time, Sasuke." Naruto still wore his signature gentle smile.

Sasuke, sitting opposite him, smugly said, "Hmph, bring it on. Before my eyes, all illusions are nothing."

The Sharingan has extremely strong resistance to genjutsu, so Sasuke was confident that Naruto's bloodline limit would be useless against him.

"Then be careful. Shatter, Kyoka Suigetsu." Kyoka Suigetsu in Naruto's hand fell to the ground, shattered into fragments, and disappeared from sight.

Sasuke felt a blur before his eyes, as if the world was rippling.

"This must be the 'Mirror Flower Water Moon' technique that I fell for before." Sasuke took a deep breath. He wasn't in a hurry to activate his Sharingan. He first used his normal eyes to sense Naruto's genjutsu.

"Using the refraction of natural elements such as water, fog, and light to control the opponent's vision, thereby creating visual distortions." Sasuke kept the ability of Kyoka Suigetsu firmly in mind and remained on guard.

"Over here." Naruto threw a punch straight at Sasuke.

A gust of wind blew as Sasuke's eyes widened: "Right in front of me!" He threw a punch, but it landed on nothing. Instead, he felt a sharp pain in his right shoulder and was knocked back several steps.

However, Naruto held back at the crucial moment, so Sasuke didn't feel too much pain.

"Impossible!!! Even if the vision is off, the wind from the punch is definitely coming straight at us!" Sasuke said, looking puzzled.

"Illusions aren't as simple as you think." Naruto walked up to Sasuke and waved his hand in front of his eyes.

A gentle breeze stirred the water, and Sasuke saw Naruto's hand fall directly towards his face. He instinctively took a step back.

“The human brain is amazing.” Naruto put his hands away and explained with a smile, “In your eyes, my bloodline limit is a pseudo-genjutsu illusion-type bloodline limit. It creates visual illusions by changing the surrounding environment. To a certain extent, it is not actually a genjutsu.”

Sasuke nodded: "True genjutsu should be able to affect all the senses."

"Wrong." Naruto shook his head.

"Wrong? Could a mirage affect other senses?" Sasuke asked doubtfully.

“That’s a misconception you’re having,” Naruto continued.

"Illusions can arise from two possibilities. One is the visual system. When there is a blind spot in the visual system, or if you are colorblind, the information you process may be incorrect. The other is that the visual system is correct, but because the brain and other areas exceed the neurovisual system, it will reorganize itself and create a completely new and correct story."

Naruto's words left Sasuke completely bewildered.

While the ninja world does have some courses that involve science, they aren't this hardcore.

Those who can calm down and delve into scientific research are generally very important laboratory members.

Orochimaru, one of the former Legendary Sannin of Konoha, was once an outstanding researcher.

"Simply put, besides the visual system, there is another crucial information processor: the frontal lobe. The frontal lobe is a region of higher-level thinking, and it is the part of the brain responsible for prediction and decision-making."

"This also means that all visual analysis, calculations, and predictions during observation will occur outside the visual system."

"In other words, the illusion I've created is so sophisticated that it has deceived your brain, thus affecting your other senses to some extent," Naruto said with a smile. Under his control, the world in Sasuke's eyes rippled once again.

"I can simulate the ripples created by the vibration of a punch in the air, and even the subtle changes that occur to the surrounding flowers and plants. This allows me to construct the scene I want in your mind through your eyes, and it can also affect your other senses to some extent. Is that explanation clear enough?"

"I understand now, that's why this bloodline limit is called a pseudo-genjutsu bloodline limit." Sasuke suddenly realized.

"That's roughly the idea, so closing my eyes can indeed effectively counter my bloodline limit." Naruto nodded. "But most ninjas rely heavily on their eyes."

"Then let's use the Sharingan." Sasuke's eyes transformed into Sharingan.

With the appearance of the Sharingan, Sasuke's confidence began to swell, and he covered his face and laughed wildly: "I saw it, I saw it again!! I saw the illusion you created."

“I’m not creating illusions right now,” Naruto said gently.

“Uh…” The air fell silent.

"That's not important. Use Mirror Flower Water Moon now, Naruto! I'll defeat you with these eyes!" Sasuke laughed wildly.

"As you wish." Naruto waved his Mirror Flower Water Moon, beginning to alter the surrounding environment.

Kakashi, who was watching from the sidelines, also watched all of this intently.

The true ability of the Mirror Flower Water Moon is to manipulate the five senses, but manipulating a single visual sense is also effortless for it.

Naruto chose this battle against Sasuke to test whether the visual manipulation of Kyoka Suigetsu was effective against the Sharingan, and also to demonstrate the details of the ability to the Konoha leadership in more detail.

Once the illusion was complete, Naruto lightly struck Sasuke with a palm strike.

Sasuke's Sharingan swirled wildly, chakra gathering in his eyes, and a look of surprise appeared in them.

"I saw it." Sasuke sidestepped Naruto's attack and threw a backhand punch at Naruto's face.

“A Sharingan with two tomoe can break through visual manipulation that isn’t being used at full power.” Naruto’s heart skipped a beat, and he exchanged a few blows with Sasuke.

Sasuke's eyes quickly showed signs of fatigue, his breathing became rapid, and his chakra was being rapidly depleted.

"Looks like this is my limit." Naruto forcefully pushed Sasuke's arms away and retreated from the battlefield.

"That's fine then."

"It's not over yet." Sasuke, supporting his knees and panting heavily, looked unwilling to give up. "I can still fight."

“You’ve done very well,” Naruto said, shaking his head.

The ability of "illusionary phenomena" has been understood to some extent through this experiment.

As long as Naruto uses all his spiritual pressure, Kyoka Suigetsu is enough to shield Sasuke, who has a Sharingan with two tomoe.

It's important to know that the Uchiha clan has a very high resistance to genjutsu.

As long as Naruto's spiritual pressure increases significantly, his fully activated Kyoka Suigetsu will be something even a three-tomoe Sharingan cannot withstand.

Chapter Sixty-Eight Training

"Huff, huff." Sasuke covered his eyes, panting heavily. The fatigue emanating from his Sharingan alarmed him.

He looked at Naruto, who still had a gentle smile on his face, was not out of breath, and didn't even break a sweat.

"What a terrifying bloodline limit," he couldn't help but mutter to himself.

"Oh~ it seems this bloodline limit is even better than I imagined." Kakashi's deadpan eyes showed a rare flicker of emotion.

"So Naruto, I'm curious about the principles behind your Kido?" Kakashi asked, voicing the question that the Konoha leadership had been wanting to know.

Despite being a kekkei genkai of the illusion type, it can use various different attributes of kendo, with fire and lightning being the only known attributes so far.

“You can think of it as an attribute transformation derived from light and water.” Naruto adjusted his glasses and replied, “Flowing water can generate electricity, light can generate heat, and many different movements can generate different attributes, thus giving rise to the application of Kido. These involve scientific knowledge and are quite complex, so you probably wouldn’t understand.”

Kakashi and Sasuke were both puzzled, but they coughed lightly, pretending to be cultured and already understanding.

"I see, that's quite a bloodline limit."

Kakashi tried hard to remember what Naruto had said, preparing to repeat it to the Third Hokage.

Naruto and Sasuke then continued their training for the rest of the day.

Recently, Sasuke has been asking Kakashi about the transformations of lightning-style chakra.

I heard they're learning the special ninjutsu called Raikiri.

As for Naruto, he continued his training in sword techniques and chakra, hoping to one day find a way to increase his spiritual pressure.

He had a premonition that this day was not far off.

"Now that I'm a full-fledged ninja, my future missions will surely witness the passing of various lives and the departure of souls. Perhaps I can find a way to reach the world where souls reside." Thinking of this, Naruto's eyes darkened.

......

The Third Hokage never imagined that Naruto would improve so much after receiving guidance from a good teacher. In less than a month, Kakashi was already running out of ideas.

For Naruto, the development of his bloodline limit and the training of his sword techniques were clearly more important than his ninjutsu.

This makes Kakashi, as a teacher, seem somewhat useless.

Unless... he takes up his swordsmanship again.

The swordsmanship lineage of Konoha's White Fang is truly astonishing.

Kakashi understood this as well. He returned home somewhat dejectedly, lost in thought.

After White Fang's death, he gave up swordsmanship.

Originally, as a renowned genius of Konoha, he not only possessed unparalleled ninjutsu and taijutsu throughout his life, but also had considerable swordsmanship skills.

but.

His proud father, Konoha's White Fang, chose to commit suicide because of rumors circulating in the village.

The pain of losing his only family member made Kakashi put down his sword.

Kakashi took out the knife left by his father from a hidden compartment, his eyes filled with complex emotions.

Having not used a knife for over a decade, he had even forgotten the knife skills he had once learned.

But when his hands touched the cold hilt of the knife again, deep-seated memories surfaced in his mind, and long-lost muscle memory reminded him.

He hasn't forgotten.

......

In the following period, Class 7 received several simple commissions, including some similar ones involving the suppression of mountain bandits.

The now much more skilled Class 7 showed no fear of blood, and even Sakura performed perfectly.