Naruto: The Strongest Sage.

"Okay, Karin is back. Let's go upstairs."

Karin is now more and more adapted to the life in Konoha. The timid character she originally developed as a Kusagakure ninja has completely disappeared. She has become a carefree crazy girl.

Yumi was very worried about this, fearing that the girl would not be able to get married in the future. However, Aoba did not feel anything.

"Don't worry, the little girl will grow up and change naturally when she meets someone she likes. Parents don't need to worry too much. Generally speaking, the more you interfere, the worse it is likely to be."

"I hope so." Yumi was still a little worried.

"Mom, is the meal ready? I'm starving."

After going crazy all afternoon, Karin was clamoring for food. Yumi looked helpless, but still cooked lovingly.

Karin entangled Aoba.

"Brother Aoba, can you teach me some powerful ninjutsu? I have already practiced the Three Body Technique very well. I can also climb trees and walk on water."

"Really? Then let me see."

In the original manga, most of the descriptions of Karin are about her being crazy about Sasuke, and there are few plots describing the girl's growth process.

Later, she followed Orochimaru. According to Orochimaru's character at that time, he was probably on the path of pursuing immortality.

It was impossible to teach her seriously. But even so, Karin still grew up to become a manager of one of Orochimaru's bases.

Therefore, Aoba knew from the beginning that this girl was a genius that was not shown in the original work.

But Karin's performance still surprised her.

You know, it's only been about half a year since she started school. Even if she had some basics, she still surprised him that she finished the school curriculum so quickly.

Sure enough, under Aoba's gaze, Karin skillfully completed the Three Body Technique, as well as the demonstrations of climbing a tree and treading water.

"It's really good. We can start the next stage of practice now."

In fact, it's not just these basic skills. The chakra in Karin's body has surpassed the level of ordinary Genin in Konoha.

The physique of the Vortex Clan is so strong that it is shocking.

Overall, Aoba even felt that the Uzumaki clan was the closest to the immortal body. The Senju clan, except for Hashirama Senju, was a bit mediocre in terms of physical fitness.

Aoba had already prepared for Karin's next phase of training. He had previously tested Karin's chakra attributes. The girl's attributes were earth and water.

Aoba is not good at either of these two things. However, her plan for Karin's development is not just about being a simple ninja.

After all, it was shown in the original work. Karin has all the most prominent characteristics of the Uzumaki clan. Kagura's mind's eye has now awakened.

In addition, in the later period of Naruto, Karin also awakened the Diamond Seal, a sealing technique that requires talent to perform.

From this, it can be seen that Karin's real development direction should be sealing techniques. In fact, in the Naruto world, if high-end sealing techniques are used well, the combat effectiveness is no weaker than pure ninjutsu.

In terms of potential, it even far exceeds the conventional five-element ninjutsu. After all, the Uzumaki clan's sealing technique may have touched the god of death.

Aoba had obtained a lot of information about sealing techniques from Orochimaru during the last transaction, so he was also prepared for this. In the future, it was inevitable that he would face the tailed beasts.

Conventional ninjutsu has no good effect against the powerful brick-flying style of the tailed beasts. However, the Uzumaki clan's Diamond Seal and Eight Diagrams Seal can be said to be specifically designed to restrain the tailed beasts.

By then, Karin will be the trump card in his hand.

Soon, Karin regretted it because compared to climbing trees and treading water, this kind of physical training requires a lot of professional knowledge to practice the sealing technique.

In other words, Karin needs to start by learning a lot of theory.

God has mercy on her. What Karin fears most in school is these messy theory classes. She originally wanted to go home and learn some cool skills to show off to her friends.

I didn't expect that I needed to learn the theory class I hated the most. Moreover, the theory was obscure and difficult to understand, even more hypnotic than the Will of Fire in school.

But there was no other way. She asked and Brother Qingye agreed. It was too late to regret now. Her only way to resist was to play outside for a while after school.

Because once you return home, you will have to start a dark and gloomy study life.

Karin's studies were on the right track, and Aoba was also seizing every minute and every second to improve himself.

After completing the Sage Mode, his need for conventional ninjutsu also increased. After all, in the Sage Mode, some very conventional ninjutsu would become extremely terrifying.

There are very few ways for civilian ninjas to obtain ninjutsu. Generally speaking, they accumulate points by completing missions and then exchange them from the top leaders of Konoha.

After completing high-level tasks, you will also be rewarded with ninjutsu and trophies from battle.

But Aoba doesn't need either of these. He has his own channel, Kakashi.

As a famous elite jonin in Konoha, Kakashi's ninjutsu may be second only to the third generation, or even exceed that of the third generation.

In order to save chakra, Aoba used ninjutsu to fight mostly. After the Sage Mode, the power of ninjutsu increased significantly, so he learned a lot of ninjutsu from Kakashi to enrich his fighting methods.

Of course, he didn't take advantage of Kakashi for nothing. He gave Kakashi two life potions. This thing, if used well in actual combat, is like a second life. The key is that it has no side effects at all, and its value is enough to be worth some conventional ninjutsu.

At the same time, Aoba was also trying to learn one of the most famous ninjutsu in Naruto, the Rasengan.

The original concept of Rasengan actually comes from the Tailed Beast Ball, which is to compress chakra to the extreme and then release it.

But in reality, ninjas can't do this at all. Because humans can't really have as much chakra as the tailed beasts. Even if they do, they can't compress it to that extent.

The Tailed Beast Ball does not require any special skills, but a real powerful flying brick, which requires the ultimate chakra and the ultimate compression force.

If there is not enough compression force, the chakra ball cannot cause any harm, because once the chakra leaves the human body, it will quickly dissipate.

Therefore, ninjutsu came into being. Ninjutsu allowed chakra to change its form, presenting a state of matter or energy, and then it could be released remotely.

Minato Namikaze realized this and changed his mind. He tried to let the chakra rotate in his hand to keep it stable and achieve a compression effect.

This is the basic principle of the Rasengan. Knowing the basic principle, Aoba would naturally not let go of this technique.