Blood spurted out from Karin's shoulders. She gritted her teeth and maintained the Fuinjutsu posture, and her consciousness connection began to become unstable.
"Karin!" Naruto roared, Nine-Tails Chakra skyrocketed, but most of it was immediately absorbed by Soundless Wall.
The reformed prisoners are getting more and more crazy, not caring about their own injuries at all, and just mechanically executing the attack instructions. Sasuke and Kusanagi Sword have cut off more than a dozen enemies, but they are still crawling on the ground after losing their limbs, trying to grab anyone's ankles.
"Something's wrong." Yuki-onna observed the battlefield calmly, "The movements of these prisoners are too regular, as if they are controlled by some kind of rhythm."
She closed her eyes, and Ice Release Kekkei Genkai's perception ability was fully activated. Although Soundless Wall blocked the sound, the trace of energy fluctuations still existed.
After a while, Yuki-onna opened his eyes, a glimmer of understanding flashing through his pupils.
"Found it." She said in the conscious connection, "It's not that there is no sound, but the sound has been converted into infrasound waves. These prisoners receive instructions through infrasound waves!"
Sasuke pupils contracted. "Infrasound wave? What is that?"
"Low-frequency sound waves that are inaudible to the human ear can directly act on the brain." Yuki-onna explained, "The real function of Soundless Wall is not to shield the sound, but to convert all sounds into infrasound waves, forming a huge Resonance killing array!"
Naruto blocked the attacks of three prisoners. "Then how to crack it?"
Yuki-onna did not answer, but took a deep breath.
The power in her body began to surge - the pure energy of Spring of Life, the Six Paths Yang Release injected by Nagato, and her own Ice Release Kekkei Genkai. The three powers were perfectly integrated at this moment.
Her eyes turned pure ice blue, and lines like snowflakes appeared in her pupils. The surrounding temperature dropped sharply, and frost began to form on the ground.
"Ice Release·Time and space frozen!"
This time it is not simply freezing, but the "concept" itself.
Invisible infrasound waves propagate in the air, but when they come into contact with the Ice Release Chakra released by Yuki-onna, they actually condense into ice crystals visible to the naked eye!
Those invisible and intangible sound waves turned into countless tiny ice-blue crystals, forming a huge network in the air.
"This is impossible!" In the distant tower, a man wearing a sonic amplifier stood up in shock, "How can infrasound waves be frozen? They are energy fluctuations, not matter!"
The man is the fifth seat of Shadow Organization - Muon. His Kekkei Genkai "Sound Release" can control all sound waves, and combined with the special terrain of Hozuki Castle, formed this unsolvable killing array.
But now, his proud ability has been easily broken by a woman.
Yuki-onna raised his right hand, and the ice-crystalized arm exuded a biting chill.
"Broken."
She clenched her fist lightly.
The ice crystal network in the air exploded instantly, shattering together with the infrasound waves contained in it. Soundless Wall's energy field vibrated violently, and countless cracks appeared.
Those reformed prisoners who were not afraid of death suddenly stopped their movements, their eyes regained a trace of clarity, and then they fell to the ground one after another, losing their ability to fight.
"Successful!" Naruto pumped his fist excitedly.
Sasuke looked at Yuki-onna, shock flashed in his eyes. This ability to freeze immaterial energy has gone beyond the scope of ordinary Kekkei Genkai.
Karin covered the wound on his shoulder and smiled weakly, "Yuki-onna sister is so amazing..."
But before everyone could breathe a sigh of relief, a harsh alarm sounded from the tower - Soundless Wall was destroyed, and the entire Hozuki Castle defense system was activated.
"Damn it!" Muon pressed the red button on the console frantically, "Since I can't kill you, let's sink to the bottom of the sea together!"
The ground began to shake violently.
Hozuki Castle is built on an artificial island, and at the bottom of the island, a special sinking device for Shadow Organization is installed.
"Kakaka--"
The rocks at the edge of the island began to break, and seawater poured in from the cracks.
"No!" Sasuke's face changed drastically, "They are going to sink the whole island!"
Naruto picked up the injured Karin: "Escape quickly!"
But it was too late. The sea water poured in at an alarming speed, flooding the courtyard in less than ten seconds. What was even more frightening was that a large number of modified creatures emerged from the water - sharks, octopuses, and even giant jellyfish, all of which had been mechanically modified and exuded a dangerous aura.
"Underwater fighting is not good for us." Sasuke Hold Kusanagi Sword tight.
Naruto gritted his teeth. "Nine-Tails's Chakra will be weakened in water..."
Just when everyone was in dire straits, Yuki-onna took action again.
She stepped on the water, and the ice blue Chakra spread like ripples.
"Ice Release·Extreme cold field!"
With her as the center, the sea area with a radius of 500 meters froze instantly. It was not ice on the surface, but solid ice from the bottom of the sea to the sea surface.
Before those modified creatures could react, they were frozen in the ice and maintained an attacking posture.
Naruto opened his mouth wide. "This... is this too exaggerated?"
Rinnegan of Sasuke carefully observed the structure of the ice layer and found that every inch of ice crystal contained precise Chakra Control. This kind of large-scale precise freezing requires extreme control of energy.
"Kage Level peak." Sasuke whispered, "Her strength has reached Kage Level peak."
Yuki-onna turned around, his face a little pale, but his eyes were still firm. "Now, enter the inside of Hozuki Castle."
The four of them walked quickly on the ice. Muon finally panicked when he saw this scene in the tower.
"Second seat! Third seat! The target's strength exceeds expectations, please support!" He shouted into the communicator.
White Bone's cold voice came from the communicator. "It will take ten minutes for support. You hold them back first."
"Ten minutes? I can't even last a minute!" Muon roared in collapse.
But no one paid any attention to his complaints.
Naruto The four of them broke through all the obstacles and finally arrived in front of the main building of Hozuki Castle. The thick iron door was tightly closed, with complex Fuinjutsu patterns engraved on it.
"Get out of the way." Yuki-onna walked to the door and pressed his right hand on the iron door.
The ice crystallized arm released a terrifying cold air, the Fuinjutsu formula failed at low temperatures, and countless cracks appeared on the surface of the iron door.
"Click--"
The iron door shattered into countless ice cubes.
The four people rushed in, and the sight in front of them stunned everyone.
This is not a prison at all, but a huge creature Laboratory. Countless Culture Tank are lined up on both sides of the hall, filled with various failed experimental subjects - some have multiple arms, some have bodies twisted into irregular shapes, and some have no human shape at all.
But the most eye-catching thing is the giant Culture Tank in the center of the hall.
That Culture Tank was twenty meters high, filled with green Nutrient Solution. A huge figure was floating in the liquid - it had the body of a feline, with two burning tails on its back, but its whole body was covered with black blood vessels, like countless earthworms wriggling under the skin.
"Two-Tails... Nekomata?" Naruto looked at the monster in disbelief.
But not quite.
The real Two-Tails is a blue flaming cat, and the creature in front of you, although similar in appearance, exudes an ominous black Chakra.
Sasuke's Rinnegan observed Culture Tank.
"This is the prototype of Artificial Tailed Beast. They are trying to replicate the power of Tailed Beast."