Naruto Bond

Lu Fei and Naruto continued to move deeper into the cave with the mysterious blue gem. Although their steps were a little tired, their hearts were more excited because of the new treasure.

The cave became deeper and deeper, and the light became dimmer. Only the faint light from their hands could barely illuminate a short distance ahead. The air around them seemed to be frozen, so dull that it was hard to breathe. Only the sound of dripping water was still ringing slowly, which seemed particularly abrupt in this silent environment.

As they walked, they suddenly heard a faint whisper. The voice seemed to come from a very far distance, but it also seemed to be whispering in their ears. It was erratic and the specific content could not be heard clearly, but it exuded a mysterious and strange atmosphere.

"Did you hear that? It sounds like someone is talking." Naruto said in a low voice. He looked around vigilantly, his hands unconsciously forming seals, ready to deal with any possible danger at any time.

Lu Fei also nodded solemnly, "Well, this sound is very strange, everyone be careful." He gripped the Thunder Flame Sword tightly, and the source power flowed slowly on the sword, ready to launch an attack at any time.

As they continued to move forward, the whispers became clearer, but they still could not tell what they were saying. At the same time, some vague figures gradually emerged in the darkness ahead. Those figures were erratic, like ghosts, looming in the darkness, which was creepy.

When they got closer to the figures, Lu Fei and Naruto finally saw what they looked like. They were a group of humanoid creatures wearing tattered robes, their faces hidden under their hoods, and their specific appearances could not be seen. All they could see were pairs of eyes emitting a faint green light, flashing strangely in the darkness, like will-o'-the-wisp.

"What are these guys? They look scary." Naruto couldn't help but say, and even though he tried to remain calm, a hint of nervousness could still be heard in his voice.

Lu Fei did not answer. He stared at these mysterious creatures intently, ready to respond to their attacks at any time.

At this moment, those mysterious creatures suddenly moved. They rushed towards Lu Fei and Naruto like a tide, at an extremely fast speed, and their movements were very uniform, as if they were under some unified command.

Lu Fei took the lead in launching the attack. He swung the Thunder Flame Sword, and the flames and lightning power on the sword instantly burst out, slashing towards the mysterious creatures in the front. The Thunder Flame Sword cut through the air, making a sharp whistling sound. Wherever it went, flames burned blazingly and lightning crackled. However, when the sword blade chopped on those mysterious creatures, it seemed as if it was slashing in the air, only causing a slight fluctuation, and those creatures did not suffer any substantial damage.

Seeing this, Naruto also used the Shadow Clone Technique. Countless Shadow Clone Techniques rushed towards the mysterious creatures. They tried to fight these creatures with fists, feet and ninjutsu, hoping to find their weaknesses. Some of the Shadow Clone Techniques used physical techniques to punch and kick the mysterious creatures; others used wind escape technique, fire escape technique and other ninjutsu to spray flames and strong winds at them. But the result was the same as Lu Fei's. These attacks seemed to have no effect on the mysterious creatures. They continued to surge like a tide, with no sign of stopping.

"These guys are not easy to deal with. They don't seem to be physical entities." Lu Fei shouted loudly. While he continued to wave the Thunder Flame Sword to resist the approach of the mysterious creatures, he was thinking about how to deal with them.

Naruto also noticed this, he frowned and said: "What should we do? Normal attacks are useless against them."

Just when they were getting anxious, Lu Fei suddenly thought of a way. He remembered that he had used energy collision to break some special defenses when fighting other enemies before. So he decided to give it a try.

Lu Fei inserted the Thunder Flame Sword into the ground, muttering something. The source power spread rapidly along the ground, forming energy chains interwoven with flames and lightning. These chains flew towards the mysterious creatures like spirit snakes, and instantly entangled them. Then, Lu Fei exerted his strength suddenly, continuously injecting the source power into the chains, trying to use the conflict of energy to affect these mysterious creatures.

Sure enough, when the energy chains wrapped around the mysterious creatures, their bodies began to fluctuate, and the originally illusory figures became a little blurry, as if they were disturbed by something.

Naruto saw this and immediately understood what Lu Fei meant. He quickly formed seals with both hands and used the immortal technique - the Super Large Rasengan. He threw the Rasengan towards the mysterious group of creatures entangled by energy chains. The Rasengan continued to grow larger during the flight, and the powerful chakra fluctuations made the surrounding air tremble.

When the Rasengan hit the mysterious creatures, it caused a violent explosion. The energy shock generated by the explosion spread in all directions, interacting with the flames and lightning on the energy chains, causing a greater impact on the mysterious creatures. This time, obvious cracks appeared on the bodies of the mysterious creatures, like broken glass, and a green light continued to seep out of the cracks, and their movements became slower.

"It works! Let's continue the attack!" Lu Fei shouted.

They continued to attack, and Lu Fei swung the Thunder Flame Sword again, slashing at the mysterious creatures with cracks on their bodies. This time, the Thunder Flame Sword could actually chop them, and every strike of the sword could chop some mysterious creatures into countless tiny fragments, which flashed in the air and then disappeared.

Naruto also used the Wind Style Nine-tailed Rasenshuriken. He combined this powerful ninjutsu with his own senjutsu chakra, making the Rasenshuriken even more powerful. The Rasenshuriken was surrounded by nine tails formed by chakra, like nine agile dragons.

Each tail contained powerful chakra, which made the power of the entire spiral shuriken several times higher than before. He threw the spiral shuriken towards the densest area of ​​the mysterious creatures. The spiral shuriken continued to grow larger during the flight, and the powerful wind attribute chakra cut through the air, making a sharp whistling sound.

When the Wind Style Nine-tailed Rasenshuriken hit the group of mysterious creatures, it triggered another violent explosion. The energy shock generated by the explosion spread in all directions, smashing more mysterious creatures into pieces. Under their joint attack, the number of those mysterious creatures gradually decreased, and their originally neat and uniform actions became chaotic.

However, just when they thought they were about to completely wipe out these mysterious creatures, the remaining mysterious creatures suddenly stopped. They stopped attacking and slowly retreated, gathering together again to form a huge circular array. The green light on their bodies became stronger, as if they were accumulating some kind of power.

"What are they doing? It seems like they are preparing some big move." Naruto said with a frown. He looked at those mysterious creatures and felt uneasy.

Lu Fei also looked at the scene in front of him with a serious expression. He clenched the Thunder Flame Sword and said, "No matter what they want to do, we must be prepared and not let them succeed."

At this moment, the mysterious creatures simultaneously opened their arms and let out a low and strange roar. As they roared, the dark green light on their bodies gathered together to form a huge green energy ball. The energy ball slowly rotated above their heads, emitting a strong evil aura, as if it was going to devour everything around it.

"This looks dangerous, we have to find a way to destroy it!" Lu Fei shouted.

Naruto nodded, "Okay, let's go together!"

They rushed towards the huge green energy ball. Lu Fei raised the Thunder Flame Sword above his head, and the source power flowed into the sword like a river, and the Thunder Flame Sword burst into a dazzling light. "Flame Thunder Explosion Slash!" He shouted and slashed towards the center of the energy ball. This sword contained the momentum of destroying the world, and the energy on the sword turned into a huge fire thunder dragon, which pounced on the energy ball with its fangs and claws.

Naruto used the immortal technique, Lava Release, Rasenshuriken! He shouted, and a huge Rasenshuriken made of lava appeared in his hand. This Rasenshuriken emitted extremely high temperatures, and the air around it was distorted by the high temperature. He threw the Rasenshuriken towards the bottom of the energy ball, and the Rasenshuriken left a burning trail during its flight, and hit the energy ball like a meteor.

Flame Thunder Explosion Slash and Molten Release Rasenshuriken hit the green energy ball one after another. The powerful force caused a violent explosion. The energy shock generated by the explosion spread in all directions, and the powerful impact made the surrounding air tremble. However, to their surprise, the green energy ball was not completely destroyed, but just shook a little, still spinning slowly, emitting an evil aura.

"This thing is so stubborn!" Naruto said with some annoyance.

Lu Fei also frowned and looked at the green energy ball. He found that after the energy ball was attacked, some strange runes appeared on the surface. Those runes were absorbing the surrounding energy and seemed to be repairing themselves.

"There's something wrong with these runes. We have to find a way to crack them before we can truly destroy this energy ball." Lu Fei said.

They approached the green energy ball again, this time more carefully. Lu Fei tried to touch the runes on the surface of the energy ball with the Thunder Flame Sword to feel their power. When the blade touched the runes, a powerful message flooded into his mind. It was some ancient knowledge and the secrets of magic, but the information was disorganized and needed time to sort out.

Naruto stood by to protect Lu Fei. He used the Wind Style Rasenshuriken to cut off the approaching energy shock. But as time went on, the energy ball became stronger and stronger, and their situation became more and more dangerous.

"I think I have some idea." Lu Fei suddenly said, and he began to draw some corresponding runes on the ground with the Sword of Thunder and Flame according to the information sorted out in his mind. After these runes were drawn, they emitted a faint light, which echoed with the runes on the surface of the energy ball.

As Lu Fei drew more and more runes, the rune light on the surface of the energy ball began to become disordered. The absorbed energy also became unstable, sometimes strong and sometimes weak.

"Naruto, let's attack again!" Lu Fei shouted.

Naruto nodded, and they attacked the green energy ball again. This time, their attack was more precise, and they went directly to the place where the rune light was the most chaotic.

Under their joint attack, the green energy ball finally couldn't bear it. With a loud bang, the green energy ball exploded, and the powerful energy wave swept everything around it. Lu Fei and Naruto were hit by the energy wave and flew backwards. They rolled on the ground for several times before they stabilized their bodies.

When the dust settled, they found that the mysterious creatures had disappeared, leaving only a messy battlefield. The surrounding cave walls had also been damaged to varying degrees, with cracks in some places and even collapse in some places.

"Finally got rid of these guys." Naruto wiped the sweat and blood from his face.

"Well, but there must be other dangers in this cave, we have to keep moving forward." Lu Fei responded.

After a short rest, they gathered themselves together and continued to move deeper into the cave.