Naruto Bond

They continued along the corridor on the second floor of the castle, the torches on the wall flickering, as if they would go out at any time. Suddenly, a gust of cold wind blew, making their backs cold, and a door not far ahead slowly swayed, making a creaking sound, as if something was calling them.

Lu Fei and Naruto looked at each other and walked towards the door cautiously. When they approached the door, the carvings on the door flashed a strange light, as if warning them not to get close. Lu Fei took a deep breath and reached out to push the door open.

Behind the door was a spacious room filled with a strong stench of decay. In the center was a huge coffin, which was engraved with strange symbols and patterns, and surrounded by ghost lights emitting a faint green light. The ghost lights flickered, reflecting the eerie and terrifying scene in the room.

"Is there some powerful monster sealed in here?" Naruto whispered, with a hint of nervousness in his eyes.

Lu Fei tightly grasped the Thunder Flame Sword, looked at the coffin vigilantly, and said, "No matter what is inside, we must deal with it carefully."

As they were talking, the coffin suddenly shook violently, and the will-o'-the-wisp became more vigorous, as if a powerful force was about to break through the seal. Then, the coffin lid was blown away by a huge force and hit the ground heavily, making a dull sound. A tall demon covered in black mist slowly rose from the coffin. Its eyes were like blood-red lanterns, emitting a bloodthirsty light. Two sharp fangs grew out of its mouth, and its hands had sharp claws, and its nails were like black blades.

"Foolish human, how dare you break into my territory? You will become my sacrifice!" The demon roared, the sound shook the whole room, and then it waved its claws and pounced towards Lu Fei and Naruto.

Lu Fei immediately used the "Flame Thunder Flash Slash" and the powerful sword energy slashed towards the demon. However, the demon simply waved its claws lightly to disperse the sword energy and continued to approach them.

Seeing this, Naruto used the Shadow Clone Technique, and many of the Shadow Clone Techniques rushed towards the demon, trying to distract it. The real Naruto quickly formed hand seals, preparing to use a powerful ninjutsu. "Senjutsu? Wind Style? Nine-tailed Rasenshuriken!" Naruto shouted, and a huge Rasenshuriken flew towards the demon, and the powerful force exploded on the demon, raising a cloud of dust.

The demon walked out of the smoke and dust. Although it had some scars on its body, it was not seriously injured. Instead, it roared even more angrily. During the battle, Lu Fei discovered that every time the demon swung its claws to attack, a black energy vortex would briefly appear on its chest. The energy fluctuations there were the most violent, which might be its weak spot.

"Naruto, attack the black energy vortex on its chest, that's its weak point!" Lu Fei shouted loudly.

After hearing this, Naruto ordered his shadow clones to change the direction of attack and attack the vital part of the demon's chest. The real Naruto used "Senjutsu? Lava Release? Rasenshuriken". The high-temperature Lava Release Rasenshuriken with blazing flames accurately hit the black energy vortex on the demon's chest. The demon roared in pain, and his body shook, disrupting the rhythm of his attack.

Lu Fei took the opportunity to perform the "Flame Thunder Demon-Breaking Slash", increasing the power of the Thunder Flame Sword to the extreme, and slashed at the vital part of the demon's chest with all his strength. A cut was made on the demon's chest, and black mist poured out of the wound, and its body began to become weak.

After a fierce battle, they finally repelled the demon. The demon turned into a black mist and returned to the coffin. The symbol on the coffin lit up again, sealing the demon.

They panted and rested in the room for a while before continuing to explore the rest of the castle. Deep in the castle, they found a hidden basement entrance. The entrance to the basement was blocked by a huge stone slab engraved with mysterious runes. Lu Fei and Naruto pushed the stone slab open together, and a stale and damp smell came to their faces.

They walked slowly down the stairs into the basement, which was dark and damp, with mosses and unknown insects crawling on the walls. At the end of the basement, they found an ancient treasure chest inlaid with various precious gems, emitting a faint light, as if attracting them.

"There must be some treasure in this treasure chest. Let's open it carefully and take a look." Lu Fei said, with anticipation gleaming in his eyes.

Naruto nodded, and the two approached the treasure chest carefully. When they opened the treasure chest, a strong light shot out from the treasure chest, illuminating the entire basement. Inside the treasure chest was an ancient book and a crystal ball that exuded mysterious power.

Lu Fei picked up the book, opened it, and found that it contained some long-lost magic and powerful skills. This knowledge was undoubtedly a huge fortune for them. Naruto picked up the crystal ball. The crystal ball was cold to the touch. He could feel that it contained a mysterious and powerful force that seemed to be able to be used to enhance his own strength or break some mysterious restrictions.

"This time the harvest is really not small!" Naruto said happily.

"Well, these things will definitely be of great help to our future adventures. Let's put them away first and continue exploring." Lu Fei said, putting the books carefully into his arms.

With their newly acquired treasure, they left the basement and continued their search for other secrets and treasures in the castle.