Naruto: The Strongest Sage.

The scale of Konoha Research Institute is now getting bigger and bigger.

The Chakra Coat has been developed to the fifth generation. Although it is still not universally available, the adaptability rate of civilian ninjas has increased several times. The gap with bloodline ninjas is rapidly narrowing.

At this rate, within two generations, we should be able to reach a complete parity, and then we can fully promote the assembly of the chakra coat.

Currently, Sakura is in charge of the development of the Chakra Coat. She is the research assistant and the user of the first generation Chakra Coat.

In Konoha, no one except Aoba is more familiar with this area than Sakura.

Senju Tobirama is responsible for more in-depth research.

The previous research on Black Zetsu's body tissue has been temporarily sealed because there is really no progress.

The research on the Aoba Kaleidoscope Fusion was also suspended because it was obvious that Liudao was secretly doing something to prevent him from succeeding.

Therefore, Aoba gave Tobirama a new research topic, Pure Land.

As the developer of Impure World Reincarnation, Tobirama thought that no one knew this ninjutsu better than him. But what he didn't expect was that Aoba wanted to study not the jutsu itself, but the dead world.

"Any progress?"

In the laboratory, Aoba asked Tobirama.

"A little bit, but it's far from enough." I asked at least twenty ninjas who were resurrected by the Impure World Reincarnation, and their descriptions of the Pure Land were... quite different.

Tobirama had a troubled expression. It seemed that this result was also a little incomprehensible to him.

Although he died, he did not go to the Pure Land. Instead, he was sealed in the belly of the god of death. Therefore, he never saw the real Pure Land.

The descriptions of the reincarnated ninjas are varied.

Some said that the Pure Land was a void, and they wandered there in a daze until they were summoned by a ninjutsu and regained consciousness.

Some say that the Pure Land is dark and they struggled in it until they were called and saw a glimmer of light.

Others said they had no recollection of it at all. They lost all consciousness after death and only remembered they were dead when they were summoned.

There are many different versions like this. I have listened to dozens of them, but still have not gotten a definite answer.

However, Aoba never gave up, but asked Tobirama to continue the experiment, and then recorded all the information, and compared them one by one from the massive amount of information, trying to find the required information from it.

However, Senju Tobirama still doesn't know what Aoba wants to know.

"I don't know myself. To put it simply, I'm looking for some kind of disharmony."

"Disharmony?"

"Yes, there is something wrong with the Pure Land of the Ninja Realm. Birth, aging, sickness and death are common to all human beings. After death, life will either completely dissipate or enter reincarnation. Why would it stay in the Pure Land?"

"why not?"

Unexpectedly, Senju Tobirama did not agree with him as he had imagined. Instead, he seemed a little puzzled by Aoba's question.

Qingye was stunned for a moment. He didn't expect that Senju Tobirama didn't notice this question. But he thought about it and understood it.

My own concept of death comes from my past life, or rather, the theory of my past life. After all, there is no definitive conclusion about the world after death.

But there are only a few possibilities: disappearance or reincarnation. But no matter what, it is impossible to stay in a certain world.

Even hell is just a punishment. After the punishment, you will still have to reincarnate.

But in the ninja world, there is no such concept. Going to the Pure Land after death is a matter of course.

The lack of information led to the difference in ideas between Senju Tobirama and Aoba.

Qingye thought about it and changed his angle.

"Let me put it this way. If all the dead are in the Pure Land, then over the past thousand years, there should be more and more people in the Pure Land.

According to this concept, how big does the Pure Land need to be? Because as long as the Ninja Realm does not perish and civilization continues, more and more people will go to the Pure Land. The simplest question is, how big is the Pure Land to accommodate so many people? What if one day in the future it is not big enough? "

"......" After Aoba finished speaking, Senju Tobirama looked at him with a strange look.

"Why are your thoughts so strange? Is this the kind of question that humans should think about?"

"Originally I didn't need to. But now I have to consider it."

"...to deal with him?"

"That's right, and there's no need to be too secretive. In fact, I don't think he can grasp everything in the ninja world. To be more direct, he should only be able to grasp the information of the ninja world through the reincarnations of Ashura and Indra."

"...I'm sorry, I can't be as calm as you when it comes to him. Also, are you sure my brother won't come back?"

"About ninety-nine percent sure."

"...get out of my lab, I need to get back to work."

Aoba was kicked out, but he was not angry. He could understand the feelings of Tobirama and Tsunade.

After all, that was Hashirama Senju. The God of the Ninja World, a being who conquered the Ninja World by himself. He disappeared without a sound, and he might even have lost himself. It was good enough that the two of them did not have cognitive collapse.

Back at the training ground, Hinata and Neji had already woken up, and were now exchanging experiences.

"How is it, did you gain anything?"

"Yes, teacher. I have begun to feel the subtle changes in the muscles. And I have noticed some hidden injuries left by previous training. With this perception ability, we can perfectly control the training volume during training and master our own body information.

I always train and improve myself in the way that suits me best.”

"That's a good summary, but it's still just the surface. You still need to understand your own body more deeply, from muscles, to bones, to internal organs, to every tiny organ, and even to the cellular level."

The two did not understand why they had to do it to this extent, but since the teacher had spoken, they naturally had to work hard in that direction.

Qingye had no intention of explaining it for the time being. The intention behind this was actually a bit complicated.

The most basic requirement is that Aoba wants to know the secret of the Byakugan. The Hyuga clan doesn't know, but Aoba does. The Byakugan can be fused. But the technology is in the hands of the descendants of Otsutsuki Hamura on the moon.

What Qingye wants to do is to study the composition of the Byakugan in depth and find out this method. And hope it can bring some inspiration to the fusion of his own Sharingan.

The deeper reason is that he has reserved Neji and Hinata, and they may become important fighting forces on his side in the future.

I drew Hinata of the future more than a dozen times, and I barely got it close enough...