Black Naruto: Shadow Moon

Uchiha Yingyue stood in his training ground, feeling the flow of natural energy around him.

Yingyue took a deep breath, slowly guided the natural energy to merge with the chakra in his body, and gradually entered the Sage Mode.

As his Sage Mode body evolved, Shadow Moon was able to absorb natural energy more easily, but he still hadn't fully mastered the power, and the mask of Sage Mode appeared on his face, covering a slightly irregular area.

"Sage Mode isn't stable enough yet," Shadow Moon thought to himself, "It looks like I need more practice."

Uchiha Kagezuki decided to test his control over the mixture of natural energy and chakra through a powerful ninjutsu.

Uchiha Yingyue formed seals with his hands, and his chakra and natural energy quickly merged together, preparing to perform Fire Style: Great Fire Annihilation.

"Immortal Technique. Fire Escape. Great Fire Extinguishment!" Yingyue shouted in a low voice, and a huge flame burst out from his mouth, sweeping in front like a sea of ​​fire.

In an instant, flames with a width of more than 40 meters rushed towards the forest like a tsunami. The fire spread rapidly, and the hot tongues of fire licked the trees. In an instant, the forest turned into a sea of ​​fire.

However, Uchiha Yingyue immediately realized that he had underestimated the power of the mixture of fairy technique and chakra. "Oh no, the power of this fire is beyond my expectation!" Yingyue was shocked. Seeing the sea of ​​fire expanding, he knew that if he didn't take action immediately, the whole forest would be burned down.

Uchiha Yingyue quickly changed his hand gestures, transforming his chakra from fire jutsu to water jutsu, and performed the Water jutsu: Great Waterfall Technique.

A large amount of water fell from the sky like a waterfall, rushing towards the raging flames.

Fire and water intertwined, thick steam rose into the sky, and the surroundings were shrouded in white water vapor.

The huge water flow gradually suppressed the fire, and the flames were eventually extinguished, but a large area of ​​the forest had been burned.

Uchiha Yingyue stood at the edge of the destroyed forest, staring at the white smoke that had not yet completely dissipated, feeling a little helpless.

"It seems that the power of immortal arts cannot be underestimated, but it will take time to control the balance between chakra and natural energy." He thought to himself, although the immortal body allows him to easily absorb natural energy, how to better utilize this power obviously requires constant practice and training.

Not long after, Uchiha Yingyue felt several chakras approaching rapidly from a distance.

The ninjas of Konoha Village have already sensed this huge chakra fluctuation and are rushing towards Shadow Moon.

Uchiha Yingyue quickly regained his composure and already had a plan in mind.

"It seems that the commotion was too big," Yingyue sighed to herself, "I have to find a reasonable explanation."

Several Konoha ninjas quickly arrived at the scene, and when they saw the surroundings destroyed by fire and water, they looked nervous.

One of the ninjas stepped forward and asked, "Master Yingyue, what happened here? We sensed an unusually strong chakra fluctuation."

Uchiha Kagezuki smiled faintly and said calmly: "Don't worry, it's just that I couldn't control myself well when practicing the new ninjutsu. It has been resolved, you don't have to worry about it."

When the ninjas heard that it was Yingyue's training that caused the noise, they were still a little shocked, but they had heard of Yingyue's strength long ago, and they all expressed their concern to him: "Master Yingyue, this kind of training is indeed extraordinary, you have worked hard."

Uchiha Yingyue nodded and waved his hand to signal them to leave.

After the ninjas left, Yingyue thought to herself, "It seems that I need more practice to fully master the immortal technique."

This training made Yingyue clearly realize the power of Sage Mode, and also understood that he must control this power more carefully.

"If this kind of loss of control occurs during a battle, the consequences will be disastrous. Not to mention the consumption of chakra and natural energy, it may easily hurt our own people." Yingyue secretly reminded himself that he must master more sophisticated chakra and natural energy control techniques as soon as possible.

Yingyue took a deep breath, put away the anxiety in his heart, and prepared to continue practicing, honing the balance of fairy skills and chakra fusion, and pursuing higher power.

As night fell, Uchiha Yingyue sat quietly on the top of the cliff, his eyes deep, as if penetrating everything in front of him.

Yingyue pondered for a long time, and memories of the many times he activated Sage Mode flashed through his mind.

Every time he activated the Sage Mode, Yingyue could feel the powerful natural energy in his body, but it was also accompanied by a hint of disharmony and weirdness - the feeling as if his body was transforming into an inhuman direction made Yingyue feel vaguely uneasy.

Yingyue recalled the magic of the three holy places, the toad magic, the snake magic, and the slug magic. Although these powers were extremely powerful, whether it was the characteristics of the toad, the scales of the snake, or the slipperiness of the slug, all these animal characteristics would involuntarily appear on the body of the practitioner.

Yingyue was keenly aware that this showed that these magic arts were essentially powers suitable for the animals in these holy lands, and were incompatible with humans.

"Immortal arts...are not suitable for ordinary humans." Yingyue whispered.

Ordinary humans do not have such a high-level immortal body as himself. They cannot easily absorb natural energy, let alone perfectly integrate with nature.

Therefore, many people who practice immortal arts will develop certain animalistic characteristics, and even pay a heavy price. However, this does not mean that there are no humans who are naturally adaptable to natural energy.

Uchiha Yingyue thought of the clan that Jūgo belonged to near the Ryuchi Cave - the clan that could naturally absorb natural energy.

Although they are extremely adaptable and can absorb natural energy with ease, this power is also a double-edged sword.

Once they absorb too much natural energy, they will lose their sanity, fall into a state of frenzy, and completely lose themselves.

This made Yingyue realize that although the talents of the clan that Shigeo belonged to were extremely powerful, they were not perfect.

"Although Chongwu has the talent of natural energy, he still cannot fully control it. That's because their bodies cannot balance this power." Yingyue whispered to himself, his eyes gradually becoming firm.

A bold idea emerged in Uchiha Yingyue's mind: "I have a high-level immortal body, maybe I can develop a new method of immortal art training that is truly suitable for humans."

Uchiha Yingyue stood up and looked up at the starry sky.

Mastering the magic arts by one's own strength will ultimately not be enough to deal with future threats.

Especially when facing the Otsutsuki clan, the limitations of ninjutsu are obvious.

Chakra, as the core power of the ninja world, essentially comes from the Otsutsuki clan.

The Otsutsuki clan not only has a natural ability to control chakra, but can also easily absorb chakra, rendering many ninjutsu useless in front of them.

Facing such a powerful enemy, ordinary ninjas have no chance of winning at all.

"If the Otsutsuki clan descends upon the Ninja Realm again, relying on the power of chakra, we will have no chance of winning." Uchiha Kagezuki analyzed calmly.

I have to find a completely new path. "Chakra is essentially an external force, and the Otsutsuki clan controls the source of this power. If you want to fight them, chakra and ninjutsu alone are not enough."

Uchiha Yingyue's thoughts gradually became clear. Since Chakra is the source of power for the Otsutsuki clan, the people of the Ninja World should rely on a more fundamental and purer natural force - natural energy.

As long as a system of fairy arts suitable for human practice is developed, it will be possible to get rid of the dependence on chakra and completely change the landscape of the ninja world.