Black Naruto: Shadow Moon

The cooperation between Tobirama Senju and Orochimaru officially began in a quiet laboratory.

Although Senju Tobirama's mastery of the Impure World Reincarnation technique was almost impeccable, he soon realized that his understanding might not cover all of the Impure World Reincarnation technique's potential, and Orochimaru's improvements and research also gave him a new understanding of the limitations of this technique.

Orochimaru explained in detail the progress of his research on Impure World Reincarnation.

"Master Tobirama, although the Impure World Reincarnation is your masterpiece, I found that if this technique can be improved, it can better preserve the strength of the body before death. In addition, I have tried to make the Impure World Body retain a clearer consciousness to a certain extent, so that the strength of the Impure World Body can be improved."

"Yingyue mentioned that the Impure World Reincarnation Technique has some flaws, which may allow the Impure World Body to use some methods to break free from the control of the caster."

Senju Tobirama was silent for a while, his hands crossed in front of his chest, a trace of disdain flashed in his eyes: "Orochimaru, I understand that you have your own understanding and improvement of the Impure World Reincarnation Technique, but as the creator of this technique, I know clearly that this technique is perfect. The Impure World Reincarnation that I designed originally can revive the dead, but it does not allow the resurrected to escape from my control. This is natural. How can the Impure World Body take the initiative to escape from the control of the caster? This is simply impossible."

His words were full of confidence, as if he firmly believed that his theory was impeccable.

However, Orochimaru was not discouraged, but still responded calmly: "Lord Tobirama, I understand your point of view. After all, you are the founder of the Impure World Reincarnation, and your understanding of it is impeccable. However, the improvements I made are not simply in pursuit of 'perfection', but to break those potential limitations and explore its deeper potential. You mentioned that the 'Yin Yang Release' involved in the Impure World Reincarnation technique is extremely complex. If we can adjust the balance of Yin and Yang on the original basis, we may be able to achieve results that you have never thought of."

A glimmer flashed in Senju Tobirama's eyes.

He pondered Orochimaru's words silently, and obviously felt a little admiration for Orochimaru's talent.

After all, Orochimaru is Sarutobi Hiruzen's disciple. Although the path he takes is different from his own, the talent displayed by Orochimaru can't help but move him.

"What you said does make sense." Senju Tobirama finally spoke, "Immortal Reincarnation does have some potential, which is beyond my original assumption. I had not fully considered whether the 'Yin Yang Release' you mentioned could play a key role in controlling the Impure World Body. But since you are confident, I would like to see your ideas."

Then, Orochimaru took out his previous research results and showed them to Senju Tobirama: "Look, these are some methods I improved based on the principles of the Impure World Reincarnation Technique. Through the improved ritual, I can better restore the spirit and chakra of the Impure World Body, and the Impure World Body can recover more of its pre-life abilities in a short period of time. In addition, I also added fine-tuning for 'control' to the ritual, so that after the Impure World Body is resurrected, it will not be too dependent on the direct control of the caster."

Senju Tobirama looked at Orochimaru's research results and couldn't help showing some praise in his eyes: "Indeed, being able to maintain the strength of the Impure World Body while also improving control is a direction worthy of my in-depth research. Sarutobi Hiruzen was right about you, your talent is undoubtedly outstanding."

At this moment, Senju Tobirama's mind began to work rapidly.

He realized that although the original purpose of the Impure World Reincarnation technique was to revive the dead and control them, its potential was far from being fully realized.

The complexity of Yin-Yang Escape brings infinite possibilities to Impure World Reincarnation.

It now seems that whether the Filthy Earth Body can "escape control" is not a simple technical problem, but a goal that can be achieved by adjusting the yin and yang balance of magic.

"If we can develop a way to remove the control of the Impure World Reincarnation, it will indeed allow the potential of this technique to be further improved." Senju Tobirama said slowly, "Although this is an extremely difficult challenge, we have enough confidence to deal with it. After all, the Impure World Reincarnation technique is very complicated. A slight adjustment may be able to achieve the effect we want."

Orochimaru also smiled: "I believe we can succeed."

"In that case, let's get started." Senju Tobirama made up his mind, "We have enough time and wisdom to achieve this goal."

As the threat of the Impure World Reincarnation was gradually dealt with, Uchiha Kagezuki finally had some rare free time.

As the current emperor of the ninja world, Shadow Moon implemented drastic reforms and successfully achieved the democratization of the ninja world.

Most of the government affairs, economic affairs, military affairs and daily governance work were handed over to trusted subordinates, and Yingyue only needed to make key decisions.

As a result, his life became more leisurely, and he would only occasionally handle some urgent matters personally.

However, for Uchiha Yingyue, idle days always make him feel an inexplicable emptiness.

As a Six Paths-level being, Yingyue's abilities have long surpassed ordinary people's cognition. Not only can he easily deal with threats from his enemies, but he can also be at the top in a world where the strong are respected.

However, this omnipotent state gradually made him feel a little tired of the changes and stability in the ninja world.

He began to yearn for some new challenges, perhaps new discoveries, or perhaps a deeper understanding of the ninja world.

So, Yingyue made a decision - to go out and visit the border of the ninja world in person to see the unknown desolate places on this planet.

Yingyue started with the surrounding areas of the five major countries, because he had traveled almost every inch of land in the five major countries before, and these places, both in terms of scenery and resources, had been developed.

The five major countries are the heart of the ninja world. The natural energy in the central area is the most abundant, making it suitable for the habitat and development of living things.

However, Yingyue knew very well that the Ninja World was not just these areas, but the entire planet.

The resources and energy possessed by the five major countries may only be a small part of this planet.

With the help of his Flying Thunder God Technique, he easily crossed those long-abandoned areas and came to some desolate places far away from the central civilization.

Most of these places are sparsely populated, with few biological organisms, and even ordinary plants find it difficult to grow.

Yingyue could sense that the natural energy here was extremely scarce, as if everything had been exhausted.

As they walked, Yingyue gradually figured out the reasons for the desolation of these areas.

The Ninja World was once a planet with extremely rich resources. However, the arrival of Kaguya Ōtsutsuki and her actions of planting the sacred tree almost consumed most of the natural energy on the planet.

The sacred tree not only absorbed the vitality of the planet, but also continued to expand its control over the ninja world, making it impossible for the natural energy in many places to recover.

Because of this, the five major countries and the small countries around them have become the only areas suitable for human survival, and other places are almost lifeless.