Reborn Naruto: Starting with its own system

As Grandpa Fukasaku spoke, he closed his eyes, and a layer of light that ordinary people could not see appeared around his small body. It was a manifestation of his connection with the power of nature.

Naruto watched Grandpa Fukasaku's demonstration and quickly concentrated. He did as Grandpa Fukasaku said, trying to let his consciousness capture the mysterious natural force around him. However, as he gradually deepened the process, he began to wonder, isn't this the spiritual energy entering the body during training?

Fukasaku continued to absorb the spiritual energy and explained: "Naruto, this is only the first step. The next step is to guide these natural forces into your body and merge with your chakra. But you must be very careful in this process. If you fail, you may be backfired by the natural forces. The natural forces integrated into the fairy technique have very special properties. It is not as relatively gentle as ordinary chakra. Natural forces are more primitive, powerful and difficult to control. Once you make a mistake in the process of introducing natural forces, you will easily transform into a frog."

Naruto nodded thoughtfully.

"Once the Senjutsu Chakra is successfully integrated, the power increase it brings is not comparable to ordinary chakra. Senjutsu Chakra can greatly enhance the power of your ninjutsu, and also allow you to have faster reaction speed and stronger endurance in battle." Fukasaku said seriously.

Then Fukasaku withdrew from the demonstration. He rummaged in his small pocket and took out a pot of oil-like substance, then quickly rubbed it on Naruto. Naruto was a little confused by this sudden action, but he knew that Fukasaku must have his reasons for doing so.

As Fukasaku applied the oil, he explained, "Naruto, this is toad oil. It can speed up your absorption of natural forces. This is our treasure of Myoboku Mountain, and it is not normally used easily. But you are a child with potential, and Grandpa hopes that you can master fairy arts faster, so I took it out to help you."

Naruto looked at the toad oil on his body curiously, and felt a cool and smooth feeling on his skin. He asked, "Grandpa Fukasaku, why can this toad oil accelerate the absorption of natural power?"

Fukasaku patiently explained, "This toad oil is extracted from our Myobokusan toads. But the first prerequisite is that they must live in a place with rich natural energy all year round. Their bodies have been influenced by it for a long time and produce this special oil. This oil contains some special ingredients that can resonate with the power of nature. When you apply toad oil on your body, it is like building a bridge between you and the power of nature, allowing the power of nature to enter your body more easily."

Naruto's eyes lit up: "So that's how it is, Grandpa Fukasaku, what should I do now?"

Grandpa Fukasaku jumped back to his original position and said, "Just like you did before, continue to sense the power of nature and try to absorb it. With the help of toad oil, you should be able to introduce the power of nature into your body more smoothly and begin to integrate it. But you must be careful. Although toad oil can help, you can't be careless. After all, the power of nature is still very dangerous."

Naruto nodded, followed Fukasaku's instructions, closed his eyes again, and concentrated. At this moment, he clearly felt the spiritual energy around him become active, as if attracted by the toad oil on his body, rushing towards him. Naruto carefully guided these spiritual powers, allowing them to slowly enter his body through his skin, just like a trickle of water merging into a river.

Before long, Naruto couldn't help but sigh at the wonderful uses of toad oil. It must be said that for practitioners, this toad oil is simply a rare treasure that can only be encountered by chance. Naruto can clearly feel that with the help of toad oil, the speed of absorbing spiritual energy at this time is completely different from that when he practices on weekdays. It's like the absorption process that was originally a trickle, now under the effect of toad oil, it has become a surging river, and its speed is several times faster than usual.

Naruto was filled with surprise. He could clearly feel the spiritual energy flowing into his body like a cheerful stream, guided by the toad oil, and then blending with his own spiritual power. This feeling was both novel and exciting. He had never experienced such a smooth energy absorption process.

Seeing that Naruto was making good progress, Fukasaku nodded with satisfaction, his eyes twinkling with satisfaction: "Little Naruto, you should be able to feel the magic of the toad oil now. But you can't be careless just because you are making good progress. In the process of practicing fairy arts, every step is full of challenges. Now you are just absorbing the power of nature. The key is to perfectly integrate the power of nature with chakra."

Naruto nodded, knowing that he couldn't let his guard down. Although the toad oil greatly accelerated the speed of absorbing spiritual energy, it also meant that he needed to be more careful in controlling the direction of the energy and the degree of fusion.

As more spiritual energy entered his body, Naruto felt his body gradually become lighter, as if every cell was cheering, and his perception became more acute. He could hear the sound of leaves falling in the distance and feel the activities of tiny creatures in the land under his feet. This close connection with nature was an experience he had never had before.

Fukasaku continued to remind him, "Naruto, you must always pay attention to the balance of energy in your body. The power of nature is strong and difficult to control. If your chakra cannot fully contain and transform it, it may cause danger. You must use your chakra to guide and tame the power of nature that enters your body like taming a wild horse." As he spoke, Fukasaku took out a long stick from somewhere.

Naruto took a deep breath and focused all his attention on the energy changes in his body. He carefully controlled his chakra, letting it wrap around the surging natural force like a gentle silk thread, bringing the natural force under his control bit by bit.

As time passed quietly, a faint golden color gradually emerged around Naruto's eyes. The golden color was like the first ray of light penetrating the clouds at dawn, spreading out in strands. At first, it was just a faint halo, and then it was like a golden veil blown by the breeze, slowly and gradually spreading around his eyes.

At the same time, his pupils also began to change gradually. Deep within the deep blue eyes, there seemed to be a mysterious force stirring quietly, like an undercurrent rising under the calm surface of a lake. The shape of the eyeballs began to change subtly, gradually turning into an elliptical shape, as if it was reshaped by some mysterious force. The pupils also gradually changed dramatically. The originally round black pupils slowly stretched, and finally turned into a thin vertical line, and the entire eyes gradually took on the appearance of frog eyes.