Haku suddenly began to form hand seals with one hand, which greatly shocked Naruto Uzumaki and Uchiha Sasuke. Even Kakashi had only seen Chiba and the Third Mizukage fight during the Third Shinobi World War, where the Third Mizukage used one-handed seals.

"Secret Art! Thousand Flying Water Needles of Death!"

Haku stomped on the water on the ground, causing water to splash into the air, forming water senbon.

Seeing Haku's senbon about to shoot, Naruto Uzumaki and Uchiha Sasuke both closed their eyes, recalling their training over the past few days.

The Wind Breathing Full Sword Style that Naruto Uzumaki practiced could produce powerful cutting wind blades with each release. Skilled users could also wrap wind blades around their hands and feet to use as Taijutsu techniques.

After Kakashi answered some questions, Naruto Uzumaki had already slightly grasped how to wrap wind blades around his hands and feet, but he hadn't tested it yet.

Meanwhile, Uchiha Sasuke recalled tree climbing, refining Chakra to his feet in one breath.

Naruto Uzumaki and Uchiha Sasuke opened their eyes simultaneously.

Uchiha Sasuke refined Chakra to his right foot, stomping the ground fiercely to push Haku away.

At the same time, Naruto Uzumaki's right leg was wrapped in wind blades, and he kicked towards Haku.

Haku immediately dodged backward, but because of the wind blades wrapped around Naruto Uzumaki's right leg, the attack range increased, cutting a small gash on Haku's cheek, and a trickle of blood flowed down.

Simultaneously, Uchiha Sasuke leaped into the air and threw a large number of Shuriken at Haku.

Haku continuously retreated, dodging Uchiha Sasuke's Shuriken.

Naruto Uzumaki also gripped his Ninja Sword tightly and attacked Haku from the side.

"Wind Breathing First Form: Dust Whirlwind Cutter!"

Naruto Uzumaki approached Haku at an extremely high speed, leaving spiral wind blades that scraped the ground behind him, and swung his sword to cut at Haku.

Haku immediately formed hand seals.

"Ice Release! Ice Rock Dome of Nothingness!"

An ice wall rose in front of Haku.

Naruto Uzumaki's Ninja Sword struck the ice wall.

The ice wall was instantly shattered into ice shards by the wind blades. Because the attack was accompanied by a powerful shockwave, Haku was sent flying and landed next to Zabuza.

Uchiha Sasuke looked at Haku, who had fallen to the ground, and scoffed, "It seems... that's all there is to it."

Naruto Uzumaki looked at Zabuza: "Is your helper only this strong?"

Zabuza suddenly laughed.

Hearing Zabuza's laughter, Naruto Uzumaki and Uchiha Sasuke frowned simultaneously.

Because Zabuza's laughter was very disdainful.

Zabuza said to Haku, who had stood up: "Haku, get a little serious. If this continues, they'll turn the tables on us. Don't let them make a fool of you."

"Yes."

Haku's entire demeanor changed, making Naruto Uzumaki and Uchiha Sasuke's expressions turn grave.

Haku formed hand seals with both hands.

"Ice Release: Ice Spikes!"

Suddenly, a large number of ice spikes appeared on the ground beneath Naruto Uzumaki and Uchiha Sasuke's feet.

Naruto Uzumaki and Uchiha Sasuke immediately leaped to dodge.

Haku, using Body Flicker Technique, appeared behind them.

Haku kicked Naruto Uzumaki and Uchiha Sasuke, one with each foot, sending them back to the ground.

Naruto Uzumaki rolled over and stood up.

"Wind Breathing Second Form..."

However, before Naruto Uzumaki could unleash his sword style, Haku's Ninjutsu was already released again.

"Ice Release Secret Art: A Thousand Needles of Death!"

The temperature around Naruto Uzumaki suddenly dropped, and ice crystals rapidly formed on the Ninja Sword in his hand.

Naruto Uzumaki immediately stopped his sword style and retreated backward.

A large chunk of ice solidified at Naruto Uzumaki's previous position.

If Naruto Uzumaki had remained in that position, he would have been frozen in the ice.

Naruto Uzumaki and Uchiha Sasuke looked at Haku with some alarm.

The current Haku was completely different in strength from the Haku just now.

Kakashi's expression also became serious.

It seemed that Naruto Uzumaki and Uchiha Sasuke might not be able to handle the helper Zabuza found.

Just as Kakashi was about to step in to help, Zabuza used Body Flicker Technique to appear in front of Kakashi.

"Let the youngsters fight the youngsters. Your opponent now is me. If you had helped those two brats just now, that old man behind you would already be dead. I've given you one chance; there won't be another."

Kakashi narrowed his eyes, looking at Zabuza in front of him: "Since you know my speed, yet you appear before me like this, are you truly not afraid at all?"

"Afraid? Heh, why should I be afraid? Have you won against me?"

As he spoke, Zabuza unexpectedly spat several water needles towards Tazuna and Sakura Haruno behind Kakashi.

Kakashi's pupils constricted, and he immediately used First Form: Thunderclap and Flash, grabbing Sakura Haruno and Tazuna to dodge. However, Sakura Haruno's left arm was still hit by a water needle, though the injury was not severe.

Kakashi created a Shadow Clone to guard Sakura Haruno and Tazuna.

Then Kakashi looked at Zabuza in the distance and scoffed, "How despicable, Zabuza."

Zabuza smiled: "Despicable? What's despicable about it? Don't forget, we are Ninja. Aren't Ninja synonymous with using any means necessary? I told you, our decider is that old man. If I kill him, my mission is complete, and your mission fails, which means I win, and you lose."

Kakashi had already uncovered his forehead protector that covered his Sharingan.

Zabuza understood Thunder Breathing. This battle wouldn't end quickly, and he had just used a Shadow Clone. If he didn't unseal the seal, his Chakra might not be enough.

Kakashi formed a hand seal.

"seal: Release!"

On Kakashi's forehead, which was covered by his forehead protector, the diamond-shaped mark transformed into unique patterns.

The stored Chakra surged through Kakashi's entire body.

"Oh? Looks like you're getting serious! This is exactly what I've been waiting for!"

Zabuza formed hand seals with both hands.

"Water Style: Water Vortex Jutsu!"

After Zabuza clapped his hands together, he instantly summoned water that rapidly rotated and ascended like a tornado, spreading and crashing towards Kakashi, Sakura Haruno, and Tazuna like a waterfall.

Sakura Haruno and Tazuna, seeing the waterfall-like water rushing towards them, were instantly terrified.

Kakashi's Shadow Clone immediately formed hand seals.

"Earth Release: Earth Flow Wall!"

Kakashi's Shadow Clone erected two earth walls in front of him, blocking the incoming water.

Because Sakura Haruno couldn't walk on water yet, she stood on the earth wall with Tazuna.

A moment later, the entire bridge was covered in water.

Kakashi stood on the water, facing Zabuza.

Zabuza sneered: "Kakashi, your Thunder Breathing is fast, but what about in water?"

Zabuza completely submerged himself in the water.

Kakashi aimed his Ninja Sword at Zabuza, who was moving rapidly in the water.

"Thunder Breathing Fifth Form: Heat Boundary Thunder!"

Kakashi unleashed a high-heat, lightning-shaped slash to strike Zabuza in the water.

However, the lightning-shaped slash, upon entering the water, had its electrical current dispersed, and its speed and temperature drastically decreased. Zabuza, in the water, was even faster than on land, and the water around Zabuza was highly viscous, causing its conductivity to become extremely poor, allowing him to easily dodge Kakashi's attack.

Kakashi gave a difficult 'tsk': "It seems he came fully prepared."