Heart of Steel Half-Morph Sword Saint, Madara is willing to call me the strongest

After the White Snake Immortal left, Uchiha Yi was the only one left in the temple.

He raised his head and looked carefully at the contents on the black stone tablet.

The practice method recorded on the stone tablet is roughly that, based on the chakra in the human body, special energy from nature is absorbed and integrated in proportion to form fairy chakra.

The principle is very simple. If you want to use magic, you must enter the sage mode. If you want to enter the sage mode, you must control and absorb natural energy.

In short, the most important thing is the so-called natural energy.

"In the original work, Naruto successfully absorbed the natural energy dissipated in the air by applying toad oil. There is a difference between the Sage Mode in Ryuchi Cave and Myoboku Mountain."

Touching his chin, Uchiha Yi continued to ponder.

The chakra in a ninja's body is a fusion of physical and spiritual energy, while the fairy chakra is a fusion of these two energies plus natural energy.

Natural energy is everywhere. If you want to feel natural energy, you must become one with nature.

According to the description on the stone tablet, the so-called Sage Mode is not a fixed way of practice. As long as one can control natural energy, it can be considered Sage Mode.

Orochimaru later studied Jūgo's senjutsu physique and eventually developed a special curse seal that could also be called senjutsu.

What is certain at the moment is that Myoboku Mountain and Ryuchi Cave have their own ways of practicing immortal arts, and there is a high probability that another holy place, the Wet Bone Forest, also has unique immortal arts.

"Let's take it step by step and try to sense the natural energy first."

Uchiha Yi sat cross-legged under the black stone tablet, and began his journey of practicing Sage Mode according to the instructions on the stone tablet and the training methods provided by Orochimaru.

……

Three weeks later.

Deep inside the temple of Longdi Cave.

Uchiha Yi closed his eyes and meditated quietly.

There were strands of pure natural energy surrounding him, which were like trickles, slowly seeping into his body.

As time passed, more and more natural energy gathered in Uchiha Yi's body, and a faint dark purple light gradually emerged around him.

"I finally mastered the method of absorbing natural energy."

Uchiha Yi slowly exhaled a breath and a look of joy appeared on his face.

Practicing the Sage Mode is extremely difficult. Uchiha Yi does not have much chakra in his body, and it is barely at the entry-level Kage level.

In order to fuse the fairy chakra, a large amount of ordinary chakra is consumed. For more than twenty days in a row, he had exhausted all the chakra in his body.

The second key point in fusing natural energy is to have a strong physique. In this regard, Uchiha Yi has an advantage. His health points far exceeding those of ordinary people are enough for him to withstand the ravages of violent natural energy.

After more than ten days, Uchiha Yi finally mastered the absorption of natural energy, which was the most critical step in completing the Sage Mode.

It took another six days to fuse the fairy chakra.

"Kaka——"

Uchiha Yi closed his eyes tightly, his body suddenly changed, his muscles and bones crackled, dark purple light seeped out of his body, as if some power was about to penetrate his body.

"This... is the power of Senjutsu Chakra?"

Uchiha Yi felt a mysterious energy surging in his body.

Then, strange lines began to appear on his face, and these lines gradually spread to the skin all over his body.

At first, these lines looked like fine cracks, then they began to become clearer, and as the fairy chakra in his body continued to increase, the surface of his skin began to change, and the originally smooth skin was covered with a layer of hard and smooth scales.

The scales were a deep black with a slight blue sheen at the edges, making him appear even more gloomy in the dim light.

What shocked Uchiha Yi even more was that two sharp horns slowly grew out on both sides of his forehead. They were ivory white and extended upward in a semi-curved manner.

At the same time, his back also changed. A slender tail grew from the base of the spine. This tail was also covered with hard scales, and the tip of the tail was like a sharp blade.

His eyes also turned into the same cold snake pupils as Orochimaru, making people shudder at the sight of them.

"Is this the Sage Mode of Ryuchido?"

Uchiha Yi lowered his head and examined his new form, not knowing whether to be happy or sad.

His current appearance looks a little scary, and his original appearance is completely unrecognizable. If he returns to Konoha in this body, he will definitely be regarded as a monster.

However, the change in appearance was also within Uchiha Yi's expectations.

Practicing immortal arts will naturally change the user's appearance.

The magic of Myōbokusan will also give the user the characteristics of a toad, while the snake magic of Ryuchi Cave will give the user obvious characteristics of a snake, or a dragon.

Although his appearance had become so terrifying, Uchiha Yi could clearly feel the increase in his internal strength.

"Now, even if I don't open my Sharingan, I can still gain perception abilities far beyond the three-magatama form."

Natural energy itself has a special perception and can detect all changes and fluctuations in the surrounding natural world.

Of course, the most obvious improvement is in his strength and defense. The scales all over his body are so hard that ordinary swords and knives cannot hurt him at all.

Uchiha Yi sensed the condition in his body. After pondering for a moment, he stood up, looked down at his hands, clenched his fists, and prepared to test his strength.

After walking outside the temple, he came to an open space in the mountains and punched the ground.

"boom!"

As the punch landed, the ground suddenly shook and a huge crack spread out, extending for more than ten meters.

Within five meters of where the fist landed, all the rocks collapsed and turned into scattered dust, revealing a huge pit two meters deep.

"This power is simply terrifying!"

Uchiha Yi looked at his fists with shock in his eyes.

The improvement of Sage Mode far exceeds the effect of activating the Eight Gates.

At the same time, in the temple in the center.

The White Snake Immortal seemed to have sensed something and looked far away in the direction of Uchiha Yi.

"He succeeded so quickly? He really has a power that I can't fathom."

The White Snake Immortal exhaled a puff of smoke, and there was a hint of confusion in his huge snake eyes.

As a sage who has existed for who knows how many years, there are very few people and things in the ninja world that she finds difficult to see through.

And Uchiha Yi is the person she can't see through.

"His talent is much stronger than Orochimaru's back then."

Princess Ichikishima, who was standing on the left side of the White Snake Immortal, also opened her eyes with a hint of surprise in her eyes.

Over the past few hundred years in the ninja world, there have been only a handful of people who have been able to successfully practice the Ryuchido Senjutsu, and there has not been a single one in the past hundred years.

"You three, go test his magic."

The White Snake Immortal glanced at Ichikishimahime and the other two beside him.

"Yes!"