Naruto Bond

After successfully defeating the dark beast, Lu Fei and his companions continued to explore the castle. They climbed up a winding staircase, with worn-out oil lamps hanging on the walls on both sides of the staircase, the weak flames flickering in the darkness.

When they finally reached the end of the stairs, a tightly closed stone door appeared before them. Lu Fei gently pushed the stone door, but found that it did not move at all.

"Let me try." Flame Demon Hall Lu Lu walked forward, holding the flaming sword in both hands, and slashed at the stone gate with force.

There was a sound of "clang", sparks flew, and a shallow sword mark was left on the stone door, but the door still did not open.

Just when everyone was at a loss, some mysterious runes suddenly appeared on the stone gate and began to flash strange light.

"What is this?" Naruto frowned.

Lu Fei observed the rune carefully, "Perhaps this is some kind of seal, we need to find a way to unlock it."

At this moment, the surrounding walls began to tremble violently, and the ground began to shake. From the cracks in the walls, huge spiders crawled out.

These spiders are covered with hard hairs, their eyes flash green, and white spider silk sprays out of their mouths.

"Be careful!" Huaye Hongxu shouted and swung her magic sword to cut off the spider silk that was shooting towards her.

Lu Fei quickly formed seals with his hands, "Ten Tails? Lightning Release? Thunder Punishment Chain!" The lightning turned into chains and flew towards the spiders.

The spiders nimbly dodged the lightning chains and quickly crawled towards the crowd.

Naruto waved his hands, "Senjutsu? Wind Style? Vacuum Rasengan!" A huge wind style Rasengan flew towards the group of spiders, instantly blowing away several spiders.

However, more spiders kept coming.

The environment at this time became extremely bad. Stones on the walls kept falling, the oil lamps went out while shaking, and the entire space fell into darkness.

Huaye Hongxu's spiritual sword emitted a faint light, illuminating a small area around it.

Flame Hall's Lu Lu continued to wave his flaming sword to resist the attacks of the spiders.

Lu Fei's lightning flashed in the darkness, and every time it hit the spider, a dazzling light burst out.

The spiders' attacks became more and more fierce, and their spider silk shot towards everyone like raindrops.

"This is not a solution. We must unlock the seal of the stone door as soon as possible!" Lu Fei said loudly.

While resisting the attacks of the spiders, everyone tried hard to study the runes on the stone door.

After some intense thinking, Lu Fei finally discovered the pattern of the runes.

"Touch the runes in this order!" Lu Fei shouted.

Everyone followed Lu Fei's instructions and touched the runes one by one.

As the last rune was touched, the light on the stone door disappeared instantly and the door slowly opened.

Everyone quickly rushed into the room, closed the stone door, and kept the spiders out.

The room was filled with an old-fashioned atmosphere, and various strange instruments and books were placed around.

"This looks like a laboratory." Naruto said.

Suddenly, a figure rose from a huge container in the center of the room.

This is a monster made of machinery and magic, its body flashing with electricity and its eyes emitting red light.

"Get ready to fight!" Lu Fei shouted.

The monster waved its mechanical arms and attacked everyone.

Lu Fei formed seals with his hands, "Ten Tails? Lightning Release? Thunder Punishment Heavenly Power Explosion!" A powerful lightning struck the monster's arm, splashing sparks.

Naruto waved his hands quickly, "Senjutsu? Wind Style? Continuous shooting of super large jade spiral shurikens!" Several wind style spiral shurikens flew towards the monster.

The electric current in the monster's body instantly increased, forming an electromagnetic field that deflected the Wind Style Rasenshuriken.

Huaye Hongxu shouted, "Spirit sword? Spiritual light piercing!" The spirit sword released a ray of light and shot towards the monster's eyes.

The monster dodged sideways and the light hit its shoulder, leaving a scorch mark.

Flame Demon Hall's Lu Lu took the opportunity to rush forward, "Sword of Flame? Yanyan Burning Sky Slash!" The flaming sword chopped on the monster's body.

The monster roared and launched a more violent attack.

The instruments in the room were destroyed in the battle, the books were set on fire, and the room was filled with thick smoke.

Lu Fei and others fought fiercely with the monster in the thick smoke.

After a hard battle, everyone finally found the monster's weakness.

Lu Fei concentrated all his power of thunder and lightning, "Ten Tails? Thunder Release? Thunder Punishment Heavenly Might Destroy!" A powerful bolt of lightning struck the monster's weak spot.

The monster fell to the ground with a bang in a flash of dazzling light.

After the battle, the room was in a mess. Everyone was exhausted, but they knew that they were one step closer to the secret of the castle.

They continue to explore the castle and meet new challenges...