Naruto Bond

Lu Fei and Naruto stepped into the dark castle, and a stench of rottenness and evil hit them in the face, making them sick. The interior of the castle was dark and damp, and the walls were flashing with a strange green light, as if countless pairs of eyes were watching them in the dark.

They walked carefully along the narrow corridor, and the stone pavement under their feet made dull echoes from time to time, as if every step was stepping on the bones of the castle. Suddenly, a group of dark soldiers appeared in front of them. They were wearing heavy black armor, holding sharp long swords, and their eyes were empty and full of malice.

"Prepare for battle!" Lu Fei shouted in a low voice, and the Thunder Flame Sword instantly ignited with blazing flames and dazzling lightning.

Naruto quickly formed a seal, "Shadow Clone Technique!" Dozens of shadow clones appeared instantly and rushed towards the dark soldiers. The shadow clones engaged in a fierce close combat with the dark soldiers, and the flashes of swords and sabers flashed in the dim corridor.

Lu Fei used the "Flame and Thunder Strike Slash". He shuttled between the dark soldiers like a flash of lightning. Wherever the Thunder and Flame Sword went, the dark soldiers' armor was easily torn apart, and their bodies were scorched by flames and lightning. However, these dark soldiers seemed tireless. Even if a group was knocked down, new soldiers would emerge from the depths of the castle.

"This is not a solution. We have to find their commander." Lu Fei shouted while fending off the attack.

Naruto nodded, he quickly formed seals with his hands and cast "Senjutsu Wind Style Rasenshuriken". A huge spiral shuriken flew towards the place where the dark soldiers were most densely packed. The powerful force knocked a group of dark soldiers away and temporarily opened up a passage.

They continued along the passage into the castle, encountering various traps and obstacles along the way. In some places, black flames would suddenly spurt out of the ground, and in other places, huge spikes would appear and pierce from the wall. Lu Fei and Naruto relied on their keen perception and agility to cleverly avoid these dangers time and time again.

Finally, they arrived at the castle's hall. The hall was spacious and gloomy, with huge black stone pillars standing around it, and the stone pillars were engraved with evil runes. In the center of the hall stood a dark wizard in a black robe, holding a staff that exuded a strong dark aura in his hand, with a hideous mask on his face, revealing only a pair of eyes that flashed red light.

"You are finally here, you stupid guys." The dark wizard said in a low and hoarse voice, "Today is your end, the artifact will belong to me!"

"Don't even think about it!" Lu Fei roared, pointing the Thunder Flame Sword at the dark wizard.

The dark wizard sneered and waved his staff. The dark aura around the hall quickly gathered and formed a group of dark ghosts. These dark ghosts were illusory and exuded cold air. They pounced towards Lu Fei and Naruto with their fangs and claws.

Naruto used the "Senjutsu? Lava Release? Rasenshuriken" and the high-temperature Rasenshuriken flew towards the dark ghosts, trying to disperse them. However, the dark ghosts easily avoided the Rasenshuriken's attack and continued to approach them.

Seeing this, Lu Fei combined the power of the Thunder Flame Sword with the artifact and performed the "Flame Thunder Holy Spirit Slash". A flame thunder sword energy containing divine power slashed towards the group of dark ghosts. Wherever the sword energy went, the dark ghosts screamed in pain and their bodies gradually dissipated.

The dark wizard was furious when he saw that the dark ghost he summoned was easily dispelled. He held the staff with both hands, muttered something, and began to cast a powerful dark forbidden spell. As he chanted the spell, the ground in the hall began to tremble violently, and huge dark cracks emerged from the ground. The cracks emitted a strong suction force, trying to suck Lu Fei and Naruto in.

"Be careful!" Lu Fei shouted, and he inserted the Thunder Flame Sword into the ground. The power of the artifact was injected into the ground through the Thunder Flame Sword, forming a stable energy shield that temporarily resisted the suction of the dark crack.

Naruto used the "Senjutsu Super Rasengan" and threw it towards the dark wizard, trying to interrupt his forbidden spell. The Rasengan grew larger as it flew, and the powerful chakra fluctuations made the surrounding air tremble.

The dark wizard had to temporarily stop casting forbidden spells and use his staff to block Naruto's Rasengan. The Rasengan collided with the staff, making a loud noise, and the powerful force pushed the dark wizard back.

Lu Fei took the opportunity to rush forward, and he used the "Flame and Thunder Tyrant Slash", which contained all his strength, and slashed towards the dark wizard's head. The dark wizard was in a panic and swung his staff with all his strength to resist. The Thunder Flame Sword collided with the staff, splashing a powerful energy spark.

In the fierce collision, Lu Fei and the dark wizard were both knocked back by the powerful force. Naruto quickly came to Lu Fei's side, "Are you okay?"

Lu Fei wiped the blood from the corner of his mouth and said, "I'm fine. We must defeat him as soon as possible."

After the dark wizard stabilized his body, he waved his staff again, and this time he summoned a huge dark beast. The dark beast was as big as a mountain, covered with black scales, and spewed black venom from its mouth. Every step it took made the ground shake.

"What kind of monster is this?" Naruto said in surprise.

"No matter what it is, we must defeat it!" Lu Fei said firmly.

They rushed towards the enemy again, and Lu Fei had a fierce head-on confrontation with the dark beast. He flexibly dodged the dark beast's attacks, and at the same time used the Thunder Flame Sword to continuously attack the beast's eyes, mouth and other vital parts. Naruto then performed the Shadow Clone Technique, and the shadow clones surrounded the dark beast, looking for opportunities to launch attacks.

During the battle, Lu Fei discovered that there was a scale on the belly of the dark beast that was slightly different in color, and the defense there seemed to be relatively weak.

"Naruto, attack its belly!" Lu Fei shouted.

After hearing this, Naruto immediately ordered his shadow clones to attack the belly of the dark beast. The real Naruto then used "Senpo-Wind Style-Nine-tailed Rasenshuriken" and threw this powerful ninjutsu towards the belly of the dark beast.

The dark beast sensed the danger in its abdomen and tried to protect it with its front paws, but Lu Fei increased the intensity of his attack and restrained its movements.

Immortal technique? Wind Style? Nine-tailed Spiral Shuriken successfully hit the dark beast's abdomen, and the relatively weak scale was shattered. The dark beast let out a painful roar and its body began to shake.

Lu Fei took the opportunity to perform the "Flame Thunder Final Slash". He increased the power of the Thunder Flame Sword to the extreme and slashed towards the heart of the dark beast. This sword contained a powerful force and successfully pierced the heart of the dark beast. The dark beast fell down with a bang, raising a cloud of dust.

The dark wizard was filled with despair and anger when he saw the dark beast he summoned was defeated. He waved his staff frantically, injecting all his vitality into the staff, preparing to launch the final desperate attack.

"You all must die!" the dark wizard roared.

A huge ball of dark energy gathered at the top of his staff, emitting an aura of destruction, and shot towards Lu Fei and Naruto.

Lu Fei and Naruto did not retreat at all. They completely integrated the power of the artifact with their own power and launched their strongest joint attack. Lu Fei's Thunder Flame Sword and Naruto's Rasenshuriken, which combined the power of immortal law and artifact, flew towards the dark energy ball at the same time.

With a thunderous roar, the attacks of both sides collided. Powerful energy waves spread in all directions, and the entire dark castle shook violently under the impact of this force. Cracks began to appear in the walls, and the stone pillars collapsed one after another.

In the fierce energy collision, Lu Fei and Naruto gritted their teeth and persisted. They had only one belief in their hearts, that is, to defeat the dark wizard and protect this continent. In the end, their power gradually prevailed, and the dark energy ball was suppressed back little by little.

With a huge explosion, the dark wizard was blown away by the powerful force and fell heavily to the ground, and there was no movement anymore. The dark castle also gradually collapsed in this fierce battle.

Lu Fei and Naruto successfully defeated the dark wizard and destroyed the dark castle. They stood tiredly in the ruins, but their eyes were full of the joy of victory.

"It's finally over." Naruto breathed a sigh of relief.

"No, this is only temporary. There may be other evil forces on this continent, but as long as we are here, we will not let evil succeed." Lu Fei said firmly.

They left the ruins with the artifact.