Naruto Bond

Lu Fei and Naruto bypassed the frozen lake and continued to move deeper into the cave. The cave became increasingly colder, and the breath they exhaled condensed into white mist in the air. Strange ice crystals began to appear on the surrounding walls. These ice crystals took on various shapes, some like sharp swords, and some like blooming flowers. As they passed by, they flashed cold light.

After walking for a while, they heard a clear bell sound. The bell sound echoed in the silent cave, ethereal and mysterious, as if there was an invisible magic that attracted them to the source of the sound. As they approached, the bell sound became clearer and clearer, and at the same time, a portal flashing with strange light appeared in front of them.

The door frame was carved from a huge block of ice. Something seemed to be flowing in the ice, emitting colorful light. The door frame was inlaid with countless small silver bells, and it was these silver bells that made the crisp bell sound. In the middle of the door was a vortex-like light curtain, and there were faint images flashing in the light curtain, like a scene from another world.

"This portal looks so mysterious, it seems like something is calling us from inside." Naruto said, unable to resist reaching out to touch the flickering curtain of light.

Lu Fei hurriedly stopped him, "Don't be impulsive. We don't know where this portal leads to. It might be dangerous if we rush in." He carefully observed the area around the portal, trying to find some clues.

At this moment, the light curtain on the portal suddenly fluctuated violently, and the sound of the bells became rapid and noisy. Several transparent arms stretched out from the light curtain. These arms were as clear as crystal, exuding a cold breath, and grabbed Lu Fei and Naruto.

Lu Fei reacted quickly. He swung the Thunder Flame Sword, and the flames and lightning on the sword burst out instantly, slashing towards those transparent arms. The flames burned on the arms, and the lightning shuttled through the arms. After those arms came into contact with the power of Thunder Flame, they quickly retracted into the light curtain.

"It seems that this portal does not welcome us." Naruto said with a frown.

"We have to find a way to get through this portal. I feel there is something very important behind it." Lu Fei stared at the portal with a firm look in his eyes.

They began to think about ways to get through the portal. Lu Fei tried to use the Thunder Flame Sword to attack the ice on the door frame, hoping to break the seal of the portal. When the sword blade touched the ice, cracks appeared on the ice, but soon healed automatically, as if it had the ability to self-repair.

Naruto used the Shadow Clone Technique and let the shadow clones try to pass through the light curtain. As soon as the shadow clones touched the light curtain, they were bounced back by a powerful force and disappeared in a puff of smoke.

"The defense of this portal is very strong, we have to try it together." Lu Fei said.

They decided to attack at the same time. Lu Fei inserted the Thunder Flame Sword into the ground, and the source power spread along the ground, trying to disrupt the energy around the portal. Naruto used the Immortal Technique Super Large Rasengan and threw the Rasengan towards the light curtain of the portal. At the same time, he also rushed towards the light curtain, preparing to break through the light curtain with the impact of the Rasengan.

The Rasengan hit the light curtain, causing a violent explosion. At the moment of the explosion, Lu Fei and Naruto rushed towards the light curtain together. Their bodies were under tremendous pressure, but they still gritted their teeth and persisted. Under their combined impact, a crack appeared on the light curtain, and the surrounding bells became sharper, as if the portal was screaming in pain.

"Try harder!" Lu Fei shouted, and he poured all his source power into the Thunder Flame Sword, slashing towards the crack in the light curtain. Naruto also raised his chakra to the limit, and once again used the Immortal Technique? Super Large Rasengan, smashing towards the crack.

Under their continuous attacks, the cracks in the light curtain became bigger and bigger. Finally, they successfully broke through the light curtain and entered the portal.

After passing through the light curtain, they found themselves in a world of ice and snow. There was heavy snow in the sky, thick snow underfoot, and towering icebergs around. The coldness here was much colder than the previous cave, and they felt that their blood was frozen.

"It's so cold, we have to find a way to get out of here quickly." Naruto said shivering.

Lu Fei's face turned pale from the cold, but he remained alert. "Look, there's a glowing spot over there." He pointed to the light halfway up an iceberg in the distance.

They walked towards the direction of the light, each step took a lot of effort, the snow almost reached their knees. After a difficult trek, they finally arrived at the shining place.

It was a cave covered with ice and snow. At the entrance of the cave there was a huge crystal that emitted a warm glow, and it was this glow that attracted them. They walked into the cave, felt the warmth from the crystal, and gradually regained some consciousness.

The walls of the cave are covered with ancient murals depicting battle scenes, various strange creatures fighting, and some people who look like magicians casting powerful spells. The colors of the murals are still bright, as if they were just painted.

"These murals seem to be telling a story. Perhaps we can find clues to leave here." Lu Fei said as he carefully observed the murals.

They walked along the walls of the cave, looking at the murals one by one. Deep in the cave, they found a mural that was different from the others. It showed a huge eye with a mysterious glow in it, surrounded by some strange symbols. Below the eye, there was a pattern that looked like a keyhole.

"This eye and keyhole look important. Could they be related to leaving here?" Naruto guessed.

Lu Fei reached out to touch the eye on the mural. When his fingers touched the mural, the light in the eye suddenly brightened, and a beam of light shot out from the eye and shone on the other side of the cave. They walked over to check and found that a small groove appeared where the light shone, and the shape of the groove was exactly the same as the keyhole on the mural.

"It seems we need to find a key." Lu Fei said.

They searched everywhere in the cave, turning over every corner, but could not find any trace of the key. Just when they were a little frustrated, Naruto suddenly found a small box covered with ice and snow under the crystal. They carefully cleared the ice and snow and opened the box. In the box was a crystal clear ice key, which was engraved with the same symbols as those on the mural.

"That's it!" Naruto picked up the key excitedly.

They took the key to the groove and inserted it into the groove. As the key was inserted, the entire cave began to shake violently, and the light on the surrounding murals became brighter and brighter. A crack began to appear on the top of the cave, and a bright light leaked out of the crack.

"We're going out!" Lu Fei shouted.

They ran towards the crack and successfully escaped from this icy world before the cave completely collapsed. They found themselves back in another passage of the cave, which was no longer cold, but had a warm air current flowing through it.

"I wonder what's waiting for us ahead." Naruto said, his eyes full of anticipation.

"No matter what, we keep moving forward." Lu Fei gripped the Thunder Flame Sword tightly and walked towards the depths of the passage. Naruto followed closely behind him. Their figures gradually disappeared into the depths of the passage, heading towards a new unknown.