By recalling past memories, Uchiha Madara found that Shirakawa Yu's words seemed to make sense.

During the Warring States Period, even if some ninjas in the family were able to survive the war, they themselves began to age rapidly when they reached middle age, and their energy and energy were far from what they used to look like.

However, some tribesmen who do not have chakra talents live longer.

In Madara Uchiha's memory, there seemed to be an old man in the Uchiha family during the Warring States Period who had no chakra talent but lived to be 101 years old.

At that time, some of the sacrifices and rituals in the family were conducted by the eldest man, and everyone in the family also respected him.

On the contrary, even if some of the old people who lived at the same time as the eldest man survived, they did not live as long as he did.

Some even died peacefully at the age of sixty or seventy.

The only difference between the two seems to be that one has chakra talent with the three magatama sharingan activated, while the other has no chakra talent and is an ordinary person.

When he thought of this, Uchiha Madara was shocked.

It is such a simple logic, why has no one been able to discover it before?

Even he and Senju Hashirama seemed to have normalized all of this.

Now it is Shirakawa Yu who explains it, which makes Uchiha Madara wary of chakra.

"Young kid, continue your research!"

After coming back to his senses, Uchiha Madara crossed his arms and said with trust in his tone: "If it's you, maybe we can really discover the energy about the essence of chakra in the future!"

In response, Shirakawa Yu scratched his hair and looked a little troubled. He found that Madara-sama seemed to believe in him more than he did.

But it is clear that he has not taken a single step towards the actual research on chakra at this stage.

In fact, regarding the existence of chakra, Shirakawa Yu's own tendency is that it is a power suitable for the Otsutsuki clan, not for humans.

Because the physical structure of Otsutsuki and human beings are simply two kinds of creatures from heaven and earth, it is impossible to compare them.

And what is suitable for the Otsutsuki clan may not be suitable for humans.

“Do you know about natural energy?”

"..."

Listening to Uchiha Madara's inquiry, Shirakawa Yu shook his head, saying that he didn't know.

Although he had the understanding of natural energy in the original work, this is a real world and still requires practice and previous knowledge.

As if he was sorting out his thoughts, Uchiha Madara spoke after being silent for a while: "In nature, there is a kind of natural energy. They are everywhere and exist in every corner of this world."

"In the ninja world, Senju Hashirama can create something called senjutsu chakra and sage mode by absorbing natural energy and mixing chakra!"

"In this sage mode, the human's own injury healing speed, body, spirit, and chakra will all be enhanced in all aspects!"

"..."

Along with Uchiha Madara's explanation, Shirakawa Yuu also discovered that the natural energy described by Madara was no different from the natural energy that appeared in the original work.

There are some slight differences in some details and other aspects, but the basics are still the same.

"According to what you said, Madara-sama, there are only three holy places in the ninja world where immortals and natural energy can be practiced?"

Shirakawa Yu raised his hand to ask his question.

He simply couldn't believe that in the entire ninja world, the only psychic beasts from the three holy places, toads, slugs, and snakes, had natural energy and sage-mode cultivation methods.

Don’t other psychic beast races have ways to practice?

Aren't they all the same psychic beasts, or are there some differences?

Or are there huge differences between beasts?

"Yes, there are only three holy places in the ninja world. They have methods of practicing the sage mode and natural energy."

At the beginning, because Senju Hashirama had obtained the power called sage mode and natural energy, Uchiha Madara also personally searched for it and wanted to practice it.

But the three holy places didn't seem to welcome him, so Uchiha Madara searched for a long time but couldn't find any trace.

"Madara-sama, how did the first Hokage Senju Hashirama learn the sage mode?"

"As a former friend, has he ever told you about the cultivation methods of natural energy and sage mode?"

"..."

Facing Shirakawa Yu's curious, exploring, and expectant eyes, the corners of Uchiha Madara's eyes twitched unnaturally.

As a former good friend, after his inquiry, Senju Hashirama naturally told him the method of practice.

But the so-called cultivation method of Senju Hashirama is not something that people can learn at all.

Look what he said:

"Just like this...and then...and then I succeeded inexplicably."

The stupid teachings and Versailles remarks above are the answers given by Senju Hashirama himself.

This made Madara Uchiha who wanted to practice at that time dumbfounded. He once wondered whether Senju Hashirama deliberately did not want to teach him and fooled himself.

But after going back and thinking about it, Uchiha Madara felt relieved again.

After all, Hashirama didn't have the intelligence or brains to fool him.

"Hmph, Hashirama's sage mode is self-taught, not from the three holy places!"

Although he didn't want to admit it personally, Uchiha Madara was still a little envious of Senju Hashirama's talent in sage mode and natural energy.

After all, when fighting the two of them, this power called Immortal Mode showed unparalleled performance in the battle.

Self-taught!

After receiving the answer from Madara Uchiha himself, Shirakawa Yuu's eyes couldn't help but light up.

Since Senju Hashirama is able to teach himself, does it mean that natural energy is also adaptable to humans, but it just needs guidance.

Thinking of this, Shirakawa Yu couldn't help but feel full of motivation.

It seems that in the future we will not only study chakra, but also have an additional natural energy.

…

More than half a month passed quickly.

Shirakawa Yuu was living a fulfilling life every day, and the time came to October 10th this year.

Over the past few days, he has not only been studying but also practicing.

Yu Shirakawa, an S-level ninjutsu, has not yet fully learned the Raikiri ninjutsu, but Chidori, an A-level ninjutsu, has already learned it and can use it freely.

There are still some problems with dynamic vision and direction correction, but Shirakawa Yu feels that as long as he uses it a few times, it should be fine.

At the same time, in the process of practicing for thousands of years, Shirakawa Yu also made further achievements in the changes in the nature of thunder attribute chakra.

In addition to the training of Raikiri and Chidori, as well as the information and encyclopedia of medical ninjutsu, Shirakawa Yuu has learned most of it through self-study. As long as he is given some time, he will be able to master it.

Um?

Uchiha Madara, who was silently watching Shirakawa Yu's training, raised his head and looked at a corner of Konoha Village, his three Magatama Sharingan turning slightly.

This familiar fluctuation of time and space and pupil power...
Chapter completed!