"Chakra is an energy produced by the perfect fusion of the energy of the various components controlled by the human body...."

"This energy is not only taken from one of the 130 trillion cells in the human body. You can also experience a lot of spiritual energy that has been exercised by cultivating and accumulating experience...... After the chakra is extracted, it can be used only after the seal is sealed."

These are the last two classes of the afternoon, and because there will be exams later, Iruka on the podium has set aside a special class for students to review the basics.

Naruto propped his chin on his hand and ignored the passionate teaching of his own homeroom teacher on the podium, who was using his perception to lock onto the Uchiha Shisui in the Hokage's office.

Another half a month has passed.

In the past half a month, Uchiha Shisui has been running very diligently to the side of the three generations of Hokage, almost once a day, and occasionally meeting Uchiha Itachi many times on the cliff on the side of the Minamiga River late at night.

For this reason, Naruto went to the bottom of the cliff over there several times, but each time he ran in vain.

However, he estimated that the day when Uchiha stopped sui and committed suicide was not far away, after all, he and Uchiha Itachi had stepped on the cliff of Nangagawa so many times.....

"Father, do you think Iruka's explanation of Chakra is reasonable?"

"Naruto, do you think there's something wrong with him?"

Naruto's consciousness sank directly to the side of the sealed space, and he planned to find Bo Feng Shuimon to discuss the issue of chakra while he was bored.

"I have a question I'm curious about, do you think that if a ninja who successfully extracts chakra from his body dies and becomes a corpse or leaves a part of his body, will his chakra still exist in the world?"

"Naruto, why did you remember to ask this?"

Bo Feng Shuimen's expression was solemn, he had been a Hokage.

Naruto's question immediately reminded him of some confidential documents he had read in Konoha during his lifetime, all of which were Konoha's research on the body cells of the original Hokage.

Moreover, the Nine Lamas also specifically told him in the sealing space that under the call of the three generations of Hokage, the remnants of the Thousand Hands clan also volunteered to transplant the cells of the first Hokage, wanting to stimulate Mu Dun's human experiments.

"Don't be so serious, I'm just suddenly curious to ask" After Naruto finished speaking, he turned his gaze to the Nine Lamas who were lying on the side and continued, "Actually, this has something to do with the Nine Lamas"

The Nine Lamas opened their crimson vertical pupils slightly, and said in a somewhat unhappy tone: "What's the matter with me?" ”

"My head teacher said that chakra is a kind of energy that can be used by the control of physical ability and mental ability, so the situation of the Nine Lamas is a bit unreasonable."

"You once told me that you tailed beasts are the aggregate of chakra, but you are also living beings, but you tailed beasts are immortal and immortal, even if they are killed, they will be reborn in the ninja world after a period of time"

"And all the memories of your rebirth will be preserved, and you are in a sense eternal"

"This situation makes me feel like the whole world is protecting you, no! It's you tailed beasts that are part of this world, and part of the rules."

"Why aren't people in the ninja world curious about this?"

"What kind of power can make such rules, your existence is like guarding..."

"Naruto, stop talking about it!" Hearing this, the Nine Lama's pupils shrank, and he sat up directly with his tail, "Although I'm glad you can think of this, I can't solve your confusion right now!" ”

"It's not that the rest of the ninja world hasn't been curious about this question, but they prefer to believe another fact about the existence of tailed beasts, am I right, four generations of Hokage!"

Facing the question of the Nine Lamas, Bo Fengshuimen nodded with a somewhat ugly face.

"Since it is inconvenient for the Nine Lamas to continue to reveal it for the time being, then father, let's go back to the question at the beginning, if a person dies, can the chakra in the body stay and remain in the world for a long time?"

Naruto's gaze was straight at the wave of the wind and water, waiting for his answer.

"Yes!" Bo Feng Shuimen said solemnly, "Except for my case, through the Nine Lamas, you actually know that although the original Hokage died very early, his body cells have unimaginable activity and retain Chakra, the village once wanted to regain Mu Dun through human experiments, but the experiments were not only not successful but also very bloody and cruel."

"In addition, during the Third Ninja World War, we found out from the information we gathered from the Sand Ninja Village that there were people in their village who could make human puppets, and they made people's corpses into puppets, saved the person's chakra, and then used their ninjutsu during their lifetime."

"These puppets are made from living people, and as long as they are successfully crafted with their pre-mortem chakra, they can completely retain all the ninjutsu of this person's life, including the blood inheritance."

Naruto's eyes flashed, he didn't expect his father to know that Sand Ninja Village could create human puppets.

"Father, what you said is very detailed, but the information about Konoha is outdated, and someone in the village has mastered Mu Dun again"

"What do you mean?"

Bo Feng Shuimen was shocked, could it be that there were really people in the village who succeeded in the Mu Dun experiment, but the people of the Thousand Hands clan were obviously all....

"Father, I can tell you for sure that there are people who have succeeded, and there are more than one, but that's not the point of your concern, let's go on with Chakra"

Bo Feng Shuimen's face changed, and he immediately wanted to ask who had mastered Mu Dun now, but Naruto shook his head to stop him.

"In my opinion, there is a big problem with the nature of chakra, people can use chakra, but chakra seems to be parasitic on the human body from the birth of each person"

"Its definition is a person's physical ability and mental ability, as long as you master the refining method, you can refine the chakra, but people have a soul, and chakra has almost nothing to do with the soul, except for the original Hokage, after the person died, the chakra also dissipated, which you can also prove by the fact that the soul was taken away by the god of death after the ghoul was sealed, and now the one who is talking to me is a part of the chakra you left"

"The principle of this part of the chakra is similar to that of the shadow clone, so to some extent, the shadow clone can be said to actually have chakra and spirit and life, but no soul, you must know this"

"Naruto, what do you know from the mirror world, do you have any plans in place..."

The more he listened to it, the more he felt that something was wrong, and he always felt that Naruto suddenly said this today.

"I was attracted to the subject and had some ideas, and I admittedly knew something, but I was just discussing it with my father."

"But I feel like you're interested in the cells of the original Hokage..."

Looking at his father's worried eyes, Naruto smiled slightly and shook his head again.

"I'm a little interested, but it's not what you think, I'm thinking about how he died, cells can survive, but people die inexplicably, it's very unreasonable"

"I don't know about this, the question of the death of the first Hokage in the village is still a mystery."

Naruto nodded and withdrew from consciousness from the spirit world, Iruka had just sent out the test papers.

Taking the answer sheet that Shikamaru passed to him, Naruto picked up the answer as he thought about it.

In his previous life, when he watched the Hokage, he found that the Thousand Hands Pillar was too special, and the struggle between the Immortal Eye and the Immortal Body was only depicted three times in the entire anime.

The first time Indra fought Asura.

The second time between Madara Uchiha and Senju Pillar.

The third time was Naruto vs. Sasuke.

The picture of the battle of the three Indra Vs Asuras, the first time is similar to the third time, it is all the nine-tailed mode with the Seeker Jade vs. Susa Nenghu, and there is no Mu Dun at all.

Only the second Asura Chakra reincarnation of the Thousand Hands Pillar summoned Mu Dun, so he is an extremely special existence.

And the cells left behind after his mysterious death still have deadly virus-like activity, which only has two manifestations, allowing people to have a huge chakra and use Mu Dun!

This is more like the characteristics of the Ten Tails or the Sacred Tree in the manga.....

(I'm sorry,TV original Asura Mu Dun I think it's a bit ridiculous.,I really haven't seen Asura use Mu Dun in the comics.... ）

Ding Zero Zero –

After the exam, Naruto felt that the Uchiha Shisui had gone to the Hokage's office again after handing in the papers.

~~~~~~~~~

Time passed quietly, and soon it was dark night.

Naruto sat on a chair on the second floor with a book in his hand and was silent, his gaze wandering.

Uchiha Shisui has been in the Hokage's office since the afternoon.

"Huh? Where did he go with this man? Why did the three generations of Hokage leave suddenly? ”

Just when Naruto felt that he was waiting for nothing tonight, Uchiha Shisui suddenly left with a person, and not long after that person left, the three generations of Hokage also left with a group of people.

"Huh? There are so many people in ..... Wrong! This chakra fluctuation! It's a fight! ”

Naruto sensed that as soon as Uchiha Shisui and a group of people met, Chakra suddenly climbed sharply to another height, and immediately formed a shadow clone, then took out a scroll from his body and slapped it, reached out and grabbed the mask and the ink-black robe, and disappeared in an instant.

Swish!

When Naruto reappeared, he had already arrived at a reef under a waterfall next to one of the cliffs in the Minamiga River, and he had sealed again, forming six shadow clones.

Except for his feet, he has cast a sturdy net under every waterfall, and now he just has to wait quietly.

After about ten minutes, he sensed Uchiha Shisui and Itachi's chakra on another cliff, and Naruto immediately moved to the bottom of the cliff they were on to wait for the signal.

Poof!

A huge splash of water was stirred up under the waterfall.

Here comes the signal!

Naruto was relieved to be sure that Uchiha Shisui had fallen into the net, but the next moment he sensed that Uchiha Itachi's chakra was falling rapidly towards his position

With a pang in his heart, Naruto immediately beckoned the other shadow clones to put away the nets in their respective hands and disappeared into the night in an instant.

Swish!

When he reappeared, Naruto was already in the Forest of Death.

"Who are you?"

As soon as he landed, Uchiha Shisui actually spoke out loud.

"Oh? You're not dead yet? ”

"I... Belch! ”

Before he could say anything, Naruto directly plunged into his heart with the kunai that wrapped the wind attribute chakra.

"You'd better be dead...."