Konoha: Unable to learn ninjutsu, they had to develop their own.

Kakashi hesitated for a long time.

In the end, he took it anyway, wanting to give it a try.

Then, a few seconds later, Kakashi returned the ninja tools to Chiba and said calmly, "I think things are fine as they are now."

"Uh, can't do it? Indeed, simulating pupil power is quite difficult. I had a headache for a while before I figured out a way."

Chiba fell into deep thought.

Kakashi's mask twitched, but he didn't say anything in the end.

He meant to say it had nothing to do with eye power; it was simply that he couldn't get past the first hurdle.

Kakashi is unable to simulate neural electronics.

He thought he could imitate the simulation process since he had just observed it with his Sharingan, but in reality, the first challenge stumped him.

This level of chakra control...

too difficult!

"It's okay, I have another one that suits you."

Chiba sat down, took out his notebook, and handed it to Kakashi, asking him to look at the contents.

Improved version of Yin Seal.

Kakashi understood how precious this technique was after reading only half of it.

Store chakra!

This might not be of much use to others, but for him, the extra chakra stored up allows him to use the Sharingan a little longer in crucial moments.

In addition, this technique can be used in conjunction with absorption barriers and chakra tools.

"This technique..."

After thinking it over, Kakashi said, "To be honest, I really want it, but I don't think I have any special techniques that I can exchange with you."

"It's alright. I haven't properly thanked you yet for helping me create the Breathing Activation Technique. Consider this technique as compensation, provided that you get Tsunade's permission."

Chiba laughed.

Kakashi nodded. Of course, the source of the Yin Seal is Tsunade, so he definitely needs to go to Tsunade to get her permission.

Then, he couldn't help but sigh.

Chiba is really...

There are all sorts of techniques; if one doesn't work, there's always another that does.

It's like a treasure bag.

However, the original purpose of this technique was probably not to store ordinary chakra, but rather sage chakra?

Kakashi's eyes widened instantly after he realized what was happening.

This!

Doesn't that mean the duration of Sage Mode can be more than doubled?

not only that.

The Yin Seal can also store other types of chakra, such as...

Tailed beast chakra.

It has so many functions.

Kakashi, trying to figure out the secret, couldn't help but admire Chiba's creativity.

"By the way, that Kimimaro from the Anbu, I think you released him and he agreed to help you?"

"Ah."

Chiba nodded.

He recounted the whole story, omitting a few details about Kabuto and the Sound Village working for him.

Kakashi's expression turned serious after hearing this.

"You really want to rescue Orochimaru?"

"Save them, but not now."

Chiba narrowed his eyes. "Orochimaru used to be a member of the Akatsuki organization, and he has a lot of information that we need, but I can't guarantee that I can control him right now."

"Do you have a way to control him?"

"This eye was left to me by Danzo. I read the information about Root. It comes from Uchiha Shisui and its ability is called Kotoamatsukami, which can briefly control others."

Chiba shared his thoughts.

Kakashi could understand it at first, but the more he listened, the more confused he became.

What about spirit, pollution, and personality?

This ninjutsu...

How come I can't understand it anymore?

Chapter 204 The Roots Disband from Today Onwards

Kakashi ultimately couldn't understand what Chiba meant by the use of "Kotoamatsukami," but he did understand two things.

One is that even if you don't understand it very well, it definitely involves the spiritual realm, and it seems very impressive.

The second is...

It seems I should calm down and study medical knowledge properly.

He hadn't felt this way before, but ever since Chiba created all sorts of ninjutsu related to the human body, he had a feeling that he couldn't get by without medical knowledge.

In the less than half an hour he had been discussing with Chiba, he had been unable to keep up with the conversation several times, making his teacher look bad.

Kakashi sighed softly.

"Kakashi, my eternal nemesis, what's wrong? Why are you sighing!"

"Kai, it's you."

"..."

It's practically impossible.

Kakashi looked puzzled.

Good guy!

I never expected Kai, with his thick eyebrows and big eyes, to have learned to use this method to trick me.

but.

He smiled and said, "Under the Eight Gates, the chakra is extremely violent, and normally it is impossible to use that kind of chakra to perform ninjutsu."

"As expected of you, Kakashi, you always come up with new and exciting duel ideas."

Matt Kai remained silent for a long time.

Kakashi asked with a hint of a smile, "How exactly does the human nervous system control the body?"

Matt Kay said seriously, sitting down, "Will you go first or should I?"

Kai was ready for battle.

However, I thought about my own problems.

"Hahaha, my eternal nemesis, have you finally been influenced by me and realized the importance of frequent duels and mutual progress? Come on!"

We definitely won't lose this time!

"No, Kai, academic studies are equally important for ninjas. The creation of each ninjutsu is often the result of the accumulation and fermentation of a lot of knowledge."

"My question is very simple."

"Well, it just suddenly occurred to me, could I exchange a ninjutsu with Chiba using the Eight Gates?"

Kakashi turned his head and saw Guy climbing up from below. He narrowed his eyes, then smiled and said, "A duel?"

"Oh? Rock-paper-scissors? Okay, I won't lose to you this time."

Kai scratched his head, then looked at Kakashi, "Go ahead and ask."

"The simplest ninjutsu?"

?

Kakashi held up a finger. "Let's ask each other a question, and whoever can't answer it loses, okay?"

Matt Kai pondered for a few seconds, then looked up, changed his posture, and thought for a long time again.

"Yes, you can try techniques like Wind Release: Great Breakthrough and Great Fireball, but why do you need to pursue ninjutsu? That's putting the cart before the horse."

Is it really this difficult to think of a problem?

This question was much more normal than his, but precisely because it was a normal question, he couldn't answer a single word.

They're holding back a big surprise!

Kai thought for a few minutes, then said, "How do I use ninjutsu while in the Eight Gates state?"

"No, I want you to learn medical knowledge."

Kakashi reached out his hand.

Matt Kai was full of confidence.

Kakashi thought for a moment and said, "Normally, it's impossible, because the chakra in that state is too violent and cannot be controlled by human power, unless you use the simplest ninjutsu."

? ?

Kakashi squinted.

Kai nodded.