Reborn Naruto: Starting with its own system

Fukasaku witnessed this change, his small green eyes full of shock and surprise. A smile spread across his wrinkled face, his beard trembling slightly, and he said excitedly: "Little Naruto, this is a very good sign. Your body is adapting to the fusion of Senjutsu Chakra in a positive way. The appearance of these frog eyes shows that you have successfully mastered Senjutsu. This is a realm that many ninjas dream of."

At the same time, Grandpa Fukasaku began to marvel at Naruto's genius. With just one attempt, Naruto successfully mastered the celestial art. You know, Jiraiya spent several years practicing the celestial art, but he still didn't master it perfectly, but Naruto achieved this achievement so easily.

Fukasaku widened his small green bean-like eyes and looked at Naruto in disbelief: "Little Naruto, you are truly an unprecedented genius. When little Jiraiya came to Myoboku Mountain to practice celestial arts, he experienced countless failures and setbacks and spent several years to master the celestial arts. And there were still many flaws. But you, with just this one try, have successfully mastered the celestial arts. This is simply incredible."

Naruto scratched his head and smiled sheepishly: "Grandpa Fukasaku, I don't know why it went so smoothly. I just followed the method you taught me, and I feel that with the help of the toad oil, the whole process has become much easier."

Fukasaku shook his head. "Although the toad oil is helpful, it only plays a supporting role. The key lies in your own talent and your superb ability to perceive and integrate the power of nature. Your body is like a container for immortal arts. It is very rare to be able to accept and transform the power of nature so quickly."

"Okay, now that you have mastered the magic, you should continue to practice using it. I have some things to deal with here, so I'll leave first. If you encounter any problems during this process, you can contact me at any time." After saying that, Fukasaku walked away from the square.

Naruto looked at Fukasaku's departing back thoughtfully. He knew that the reason why he could master the immortal arts so quickly was because he was already an immortal cultivator. He also mastered the complete immortal cultivation method, so he could absorb spiritual energy very quickly.

The reason why Naruto can quickly merge his own spiritual power with the natural spiritual energy is because his control over spiritual power has reached an extremely terrifying level. Since embarking on the path of cultivation, Naruto has been constantly exploring and honing his ability to control spiritual power. He has experienced countless battles and training. In this process, his perception of spiritual power has become more and more acute, and his use of it has become more and more precise.

Every bit of spiritual power in his body was like a tamed spirit, obeying his command. He could precisely adjust the speed, intensity and direction of the spiritual power flow, whether in fierce battle or in quiet cultivation. This terrifying control allowed him to quickly find the resonance point between the natural spiritual energy when he came into contact with it, and thus merge the two at an extraordinary speed. This was also an important reason why he could quickly master the immortal arts.

The reason why the immortal technique is called immortal technique is because it is the wonderful result of the combination of spiritual energy and spiritual power (in this world, it is chakra and natural power). Naruto remembered what Fukasaku said when he taught him. The practice of immortal techniques is not as simple as ordinary ninjutsu. It requires a special connection with the power of nature, and the establishment of this connection is inseparable from the precise control of one's own spiritual power.

When absorbing and fusing spiritual energy, one's own spiritual power will undergo a qualitative change. This is also an important reason why when the Sage Mode is activated, Ninjutsu, Taijutsu, etc. will be greatly improved.

However, Naruto was also very aware of the disadvantages of this. The duration of the immortal technique on him was too short. Moreover, once he absorbed too much natural power, his body would transform into a frog, which was a very dangerous situation in battle. Not only would it expose his weaknesses, but it could also lead to a sharp decrease in combat effectiveness.

Thinking of this, Naruto secretly made up his mind to modify the method of practicing the immortal arts. He knew that this was not an easy task. After all, the practice of immortal arts had been passed down for a long time, and the previous methods had been verified by countless predecessors. But Naruto firmly believed that with his unique understanding and control of spiritual power, he would be able to find a way to prolong the duration of the immortal arts and avoid the risk of frog transformation caused by absorbing too much natural power.

So, Naruto sat cross-legged in the center of the square and began to carefully recall every step of his previous practice of fairy arts, from the introduction of spiritual energy, to the fusion with spiritual power, to the performance of fairy arts. He tried to find out the links that could be improved.

He thought that the original method of fusing spiritual energy and spiritual power was too simple and crude. It was just to force the two together. It was like forcibly mixing water and oil. The two could not really merge into one. The human body was like a large water tank with limited capacity. There was not much space to store the fused immortal power. Although this simple fusion of immortal power could work in a short period of time, it could not last for a long time.

Because of this, once the immortal power in the body is exhausted, it must be re-integrated. Naruto remembered that when fighting against Pain's Six Paths in the original work, he had to leave behind several shadow clones as "power banks". This was the reason.

Originally, Naruto entered the realm of cultivation, and his practice of immortal arts was just out of curiosity. In his cognition, immortal arts are a powerful force full of mystery, and he has a strong desire to explore unknown powers in his nature.

But when he really learned the immortal arts, Naruto was pleasantly surprised to find that the development and improvement of immortal arts had great potential. Once he successfully developed a new method of training immortal power, his strength would definitely increase dramatically.

Then Naruto took out a enlightenment pill and swallowed it, and began to explore new ways to cultivate his immortal power. As soon as the enlightenment pill entered his stomach, it turned into a warm airflow that spread throughout his body. He felt that his thinking became clearer, and his perception of spiritual power and natural power became more acute. At this time, Naruto seemed to be sublimated.

His consciousness seemed to have transcended the constraints of his body, and he could observe every trace of spiritual power and spiritual energy flowing in his body in a more detailed manner. Each spiritual power was like a smart spirit, and the spiritual energy was like an all-embracing ocean. The two were inextricably linked in the microscopic world of his body. Naruto tried to guide them in an unprecedented way. He was no longer a simple commander, but tried to become a coordinator between the two.