Naruto: Master of Yin chakra

Screech!

In the sky, Sai held the mission given by the Hokage and headed towards the Valley Country.

"Who would dare to attack the Hokage? And Hokage-sama hasn't even notified the Ninja Alliance. Could there be a mole within the Ninja Alliance as well?"

He looked at the scroll in his hand, lost in thought.

Only a few years had passed since the Fourth Shinobi World War, and peace had just arrived. Why were there still people who couldn't stand peace and wanted the world to fall into chaos?

Why?

Whoosh!

The flying bird carried him, along with his heavy thoughts, towards the distant Iwagakure.

Technology Research Institute.

In the massive laboratory, countless experimental instruments were arranged, and the facilities were very complete.

"Grandpa, it's an era of peace now, why do we still need to create such things?"

Kurotsuchi pointed at the slowly growing human body in the center, an embryo created from Ōnoki's cells.

"The Artificial Human Project was decided upon when Scientific Ninja Tools first appeared. It's meant to replace the Village's Ninja and fight for the Village.

As for an era of peace, this old man believes in temporary peace, but not eternal peace.

Currently, three Glorious Ninja are holding things down, and with their credibility, they can barely maintain world peace. Once they die, the great nations will once again ignite wars. We must think of future generations."

Ōnoki flew in mid-air, speaking to Kurotsuchi.

"Now that you are the Tsuchikage, what you need to consider is not just current matters, but also preparations for the future development of the Village."

Ōnoki's body could no longer withstand the high-intensity Tsuchikage work of Iwagakure, and he had already handed the Tsuchikage position over to Kurotsuchi.

However, he did not stop there.

Instead, he took on the role of leader for a new project, wanting to develop a power to protect the Village, even if it wasn't needed for the time being.

Just as he said, the world would not enter true peace.

It would only enter a brief period of peace under the leadership of absolute power. When the possessors of absolute power fell, the world would once again plunge into conflict, just like when Konoha Village was founded by Senju Hashirama and Uchiha Madara.

Kurotsuchi: "However, isn't this Artificial Human Project too dangerous? They not only possess bodies that ordinary Ninja don't have, but they can also use Ninjutsu, Taijutsu, and Genjutsu. If their minds go awry, Iwagakure might suffer heavy losses, even worse than a Tailed Beast rampage."

"Tsuchikage-sama, please do not doubt this old man's technology. This will be this old man's highest research achievement. Secret doors have long been set up, so the situation you described will absolutely not occur." Dr. Iwamura, who was responsible for introducing data and other information to them, heard Kurotsuchi's words and showed dissatisfaction on his face.

White hair, sparse stubble, wise eyes—all indicated that he was the foremost expert in Scientific Ninja Tools in Iwagakure, Dr. Iwamura.

Kitsuchi: "I'm just worried about problems arising. After all, humans and artificial humans are still different."

"No need to worry. This old man's technology is among the best in the entire world. It's impossible for there to be a better scientist than me." Dr. Iwamura was very confident.

As the world entered peace, the field of Scientific Ninja Tools gained importance, and he finally got a chance to showcase his talents. He would not miss this opportunity, nor did he want to be disturbed.

Ōnoki: "Kurotsuchi, don't worry. I'll keep an eye on things here. If it really comes down to it, I'll resolve the matter."

He was still very confident in his own strength.

Kurotsuchi was also very confident in this regard.

At the same time, after her grandfather's words, she also realized that war truly could not just cease like this.

Because she had recently received news that undercurrents were surging in various countries.

According to investigations, all the undercurrents were concentrated among the high-ranking officials of various countries, as well as in emerging Scientific Ninja Tools experiments.

It seemed an unknown force was exerting influence.

However, Kurotsuchi had not yet been able to grasp their existence for the time being.

She only vaguely sensed this from various intelligence reports, and she believed that the Kage of other Villages had the same feeling.

Therefore, the Artificial Human Project truly could not be stopped.

Anyway, they were just artificial humans cultivated with cells and tools, not like Orochimaru who directly experimented on people. Iwagakure could afford this level of loss.

"Alright, that's it then, Grandpa. I'll leave this to you. I have to go back to work. Seriously, why does the Tsuchikage have so much to do? I never felt it was this troublesome before!"

Kurotsuchi, with her long legs, sighed and slowly walked out of the laboratory.

Leaving behind a smiling Ōnoki.

"Nonsense, I used to handle everything myself. Otherwise, with my strength, how could my back have been strained so severely? Now I've finally found a successor and gotten rid of it."

As he spoke, Ōnoki even laughed.

Crack~

But in less than a moment, his back let out another groan under the strain.

"Ōnoki-sama, how about this old man creates a lumbar support device for you? The technical difficulty isn't high." Dr. Iwamura spoke.

Perhaps he could even get more research funds.

Ōnoki's expression darkened upon hearing this: "Do you think this old man is someone who needs such a thing?"

"Yes, yes, Ōnoki-sama, I was presumptuous."

"Make me a good one. I am someone who needs that kind of thing."

Ōnoki spoke immediately after saying that.

Isn't it foolish not to enjoy good fortune?

He was almost a hundred years old; no one would dare say anything if he enjoyed himself a bit, especially since he was the Third Tsuchikage.

"Is that so? I will immediately go and give the order." Dr. Iwamura was stunned; this reversal was too quick.

But soon, he happily ran out. As long as he completed Ōnoki's mission, it would definitely advance his future scientific research.

Among the laboratory staff, a person typing code data in front of a computer had a glint in his eyes... "This is the Valley Country, the last place Lady Tsunade disappeared. How could the Weiling Medical Technology Company be established in this country? There's definitely something wrong."

Sai landed outside the capital of the Valley Country, slowly descending.

Bang!

He used the Transformation Jutsu to turn into an ordinary resident of the Valley Country, then released countless black mice to advance in all directions.

Only then did he slowly start walking towards the capital of the Valley Country.

The Valley Country was a nation rich in grain, with fertile land, mostly plains.

Compared to the distant Spring Country, this place relied entirely on the land to produce abundant grain.

However, as he walked the roads here, Sai also saw many Ninja from the Spring Country, using their unique Ninjutsu on the cultivated land where grain was grown.

"No matter how I look at it, this shouldn't be a suitable place for a medical research company to be established."

This place was rich in grain but not in medicine, which was very contradictory.

Now was a time of peace, and all countries had channels for passage. Even the World Ninja Association had official channels for passage.

Moreover, countries were now very fond of companies establishing themselves in their territory.

Because that could bring huge economic benefits to the company.

So, a medical company operating here was problematic.

Along the way, Sai had not seen any places where medicinal herbs were grown, which clearly confirmed that both the intelligence and his suspicions were correct.