Naruto Bond

After defeating the giant monster, Lu Fei and Naruto took a short break before continuing their journey. They walked along another passage in the cave, which was filled with a mysterious atmosphere that made people alert.

"Lu Fei, I don't know what dangers are waiting for us ahead." Naruto said as he walked, with the golden Nine-Tails chakra surging slightly around his body.

Lu Fei held the Thunder Flame Sword tightly, the flames and lightning flickering on the sword. "No matter what danger there is, we must face it bravely. Our mission is to protect this world."

They moved forward cautiously in the passage, each step full of vigilance. Suddenly, they heard a faint buzzing sound, which seemed to come from deep in the passage.

"What's that sound?" Naruto asked curiously.

Lu Fei frowned, "I don't know, but this sound is very unusual. Let's be careful."

They walked in the direction of the sound, and soon came to a huge cave hall. Strange lights flickered in the hall, and countless magic runes flowed on the walls and the ground. In the center of the hall, there was a huge magic crystal, which emitted a strong light and a buzzing sound.

"What is this?" Naruto looked at the magic crystal in surprise.

Lu Fei observed the magic crystal carefully, "This magic crystal must contain powerful power. But we don't know whether it is good or bad."

Just as they were thinking about how to deal with this magic crystal, the magic crystal suddenly emitted a strong light, enveloping them. Lu Fei and Naruto immediately felt a powerful force surging into their bodies, and their source power was also stimulated by this force to become more active.

"What's going on?" Naruto asked in surprise.

Lu Fei tried to stay calm, "It seems that this magic crystal is testing us. We must deal with it carefully."

They began to try to control the power in their bodies and not let this powerful force overwhelm their bodies. After some effort, they finally succeeded in stabilizing the power in their bodies.

However, this was just the beginning of the test. The magic crystal then launched a series of magic attacks, including fire, lightning, ice and other elemental attacks. Lu Fei and Naruto had to use all their strength to deal with these attacks.

During the battle, they gradually discovered that these magical attacks were not random, but had certain rhythms and patterns. They began to dodge and counterattack according to these rhythms and patterns.

After a hard battle, they finally succeeded in resisting the attack of the magic crystal, and the magic crystal also stopped attacking and emitted a soft light.

"We did it!" Naruto said excitedly.

Lu Fei also showed a relieved smile, "But we can't let our guard down. This magic crystal may have other tests."

Sure enough, the magic crystal emitted another ray of light, and some ancient words and patterns appeared in the light. Lu Fei and Naruto carefully observed these words and patterns, trying to understand their meaning.

After some research, they finally understood the meaning of these words and patterns. It turned out that this magic crystal is an ancient artifact that has a powerful power that can help people protect the world. But to obtain the power of this artifact, one must pass a series of tests and challenges.

"It seems we still have a long way to go." Lu Fei said.

Naruto nodded, "But we will not give up. We will definitely gain the power of this artifact and fight to protect the world."

They continue to be tested by the magic crystal.