This ninja in Naruto is unscientific

Chapter 10 Water-Treading Training and Fugaku's Extra Training

"Now that we've tested the attributes, let's move on to the next exercise."

The Land of Rain is crisscrossed by rivers and dotted with swamps. Fighting on water is not as effective as fighting on flat ground; otherwise, you're a sitting duck.

"Climbing trees utilizes fixed chakra to absorb energy, while treading water..."

Fugaku Uchiha took a step forward and stood steadily on the undulating water.

The water rushed at his feet, but he remained motionless, as if nailed to it, rising and falling with the waves.

"Water is fluid and shapeless. You must continuously adjust the amount of chakra released from the soles of your feet to adapt to the changes in the water's surface."

He looked at the two of them: "You must learn this."

"Yes."

Minato Namikaze looked at the river at his feet, a thoughtful glint in his azure eyes.

He tentatively stretched out one foot, lightly touching the water's surface, feeling the force of the current.

"So that's how it is, not grasping, but supporting..."

The next second, Minato Namikaze stood on it.

Although he was a little unsteady at first, like walking on a tightrope, he was able to jog on the water after just ten minutes.

"..."

Nishikawa Tetsu had just taken out his notebook but hadn't even opened it yet.

He glanced at Minato Namikaze, who was already running on the water, and then at Fugaku Uchiha, whose expression was complicated.

Is this what they call a genius?

"Don't look at him, look at the water!" Fugaku Uchiha's stern voice rang out. "If you don't learn it before dark, you're not eating dinner tonight."

Nishikawa Tetsu sighed and walked to the riverbank.

"Surface tension, fluid mechanics, buoyancy formula..."

He was building a model in his mind.

"Unlike the static friction of climbing a tree, this is about balancing power. What's needed is not a constant output, but high-frequency pulse-like adjustment."

Pfft!

On his first attempt, Nishikawa Tetsu missed a step and fell halfway into the icy river.

"Too heavy," Fugaku Uchiha remarked coldly from the shore, arms crossed.

Pfft!

The second time, the chakra output was too strong, causing a splash. Nishikawa Tetsu was flipped over by the reaction force and fell backward into the water.

"That's incredibly stupid." Fugaku Uchiha frowned.

Nishikawa Tetsu spent almost the entire afternoon "taking a bath".

As the sun set, Nishikawa Tetsu, soaked to the bone and with lips turning purple from the cold, finally stood shakily on the water.

Although he still needs to concentrate fully and can't walk on flat ground like Minato Namikaze, at least he won't fall in.

"It's barely usable."

Fugaku Uchiha glanced at the sky and tossed a dry towel to Toru Nishikawa: "Go back to camp and rest."

……

It was late at night, at 2 a.m.

The sound of rain in the Land of Rain never stops, like natural white noise.

Inside the tent, Minato Namikaze was breathing evenly, clearly showing signs of fatigue from the intense training he had undergone during the day.

Nishikawa Tetsu suddenly opened his eyes.

As a researcher, he had developed a habit of light sleep and irregular schedule in his previous life, and the urge to urinate just now forced him to crawl out of his warm sleeping bag.

He got up quietly, only to find that the innermost bed was empty.

"Fugaku-senpai?"

Nishikawa Tetsu glanced at the neatly folded blankets, somewhat puzzled.

It's so late, could it be that you're having a meeting with Jiraiya?

Or is it...?

Nishikawa Tetsu put on a raincoat and quietly walked out of the tent.

Using the dim lights of the camp and a sliver of moonlight peeking through the clouds, he didn't head towards the toilet, but instead, as if possessed, walked towards the rocky riverbank area where he had been training during the day.

Before you even get close, a wave of scorching heat mixed with the damp, cold rain and wind hits you in the face.

"call--"

"Cough cough cough!"

A muffled cough came from behind the boulder.

Nishikawa Tetsu quietly peeked out from behind a tree.

Fugaku Uchiha was standing by the river, with his back to the camp.

He wasn't wearing the iconic Uchiha high-necked robe, but only a black, tight-fitting combat vest.

At this moment, the young Uchiha clan leader was facing the river, his hands forming a hand seal.

"Compress...compress again..."

Fugaku Uchiha muttered to himself, a ruthless glint in his voice: "According to that kid, we need to increase that oxygen... what's going on..."

"巳－未－申－亥－午－寅".

"Fire Release: Great Fireball Technique!"

A burst of flame erupted.

At first, it was a normal orange-red color, but then, Fugaku Uchiha suddenly puffed out his cheeks, as if he was forcibly squeezing out the chakra in his mouth.

The flames contracted instantly, and their color began to change to blue.

However, this transformation is extremely unstable.

"puff!"

A muffled thud.

Before it could turn completely blue, the flames exploded into a cloud of black smoke near his mouth.

"Cough cough cough! Cough!"

Fugaku Uchiha coughed repeatedly from the smoke, and a string of blisters appeared on the corners of his mouth, making him look quite disheveled.

"Damn it, it's theoretically possible."

Fugaku Uchiha wiped the black ash from the corner of his mouth, his eyes filled with an unyielding stubbornness.

"Could it be that the chakra isn't rotating fast enough? Or is the timing of the mixing wrong?"

He took a deep breath, preparing to form the hand seal again.

During the day, in front of his two juniors, in order to maintain the aloof image of the Uchiha clan, he only tried it once and only briefly.

But in reality, as a ninja who pursues power, Nishikawa Tetsu's theory of complete combustion scratched at his heart like a cat's claws.

Since I can't bring myself to ask for advice during the day, I can only practice secretly at night.

"Compression is not about brute force, senior."

A calm voice suddenly came from the woods behind them.

"Who?!"

Fugaku Uchiha was startled, his body tensed instinctively, he gripped the kunai in his hand instantly, and turned around abruptly.

When he saw Nishikawa Tetsu standing calmly under the tree, a series of wonderful expressions flashed across his usually icy face, including surprise, embarrassment, and annoyance.

It's like a primary school student secretly getting extra tutoring but getting caught by a top student.

What are you doing here?

Fugaku Uchiha quickly put away his kunai, trying to put on a dignified appearance, but at this moment his face was covered in soot and there were blisters on the corners of his mouth, so he was not very convincing.

"I'm just out on patrol, yes, on patrol."

"Does patrolling require spraying fire at the river?"

Nishikawa Tetsu walked over, not with any mocking intent, but with a serious expression, he pointed to Uchiha Fugaku's throat: "Senpai, your direction is correct, but your method is wrong. You are trying to physically compress chakra using your oral muscles, which will cause backfire and easily burn your respiratory tract."

Fugaku Uchiha originally wanted to tell him to go back to sleep, but after hearing this professional analysis, he swallowed back the words that were on the tip of his tongue.

He paused for two seconds, then turned his head somewhat awkwardly, his voice barely audible, "So what should we do?"

Nishikawa Tetsu chuckled inwardly; this arrogant attitude was truly hopeless.

He picked up a twig and drew a simple spiral on the damp mud.

"Turbocharging."

Nishikawa Tetsu said.

"You need to create a chakra vortex in your throat, allowing the chakra to spin at high speed and be expelled, using centrifugal force to draw in outside air, completing the high-pressure mixing the moment it leaves your mouth. Instead of holding it in your mouth."

"To make chakra rotate?"

Fugaku Uchiha looked at the map on the ground, lost in thought.

"Try it, don't hold your breath, just exhale with the force of the rotation."

Fugaku Uchiha nodded and formed hand seals again.

This time, instead of using brute force to squeeze, he controlled his chakra to form a spiral at his throat, as instructed by Nishikawa Tetsu.

"Fire Release: Great Fireball Technique!"

"Buzz—!!!"

A beeping sound, similar to the start of a jet engine, rang out.

A pure, stable, and extremely concentrated dark blue line of fire instantly pierced through the river, directly evaporating the water along its path and leaving a deep, red-hot hole in the rocks on the opposite bank.

There was no black smoke or backfire.

perfect.

Fugaku Uchiha gazed at the beautiful blue flame, his eyes reflecting a light of excitement.

It worked!

Its power has increased by at least two times, while its chakra consumption remains the same.

He stopped using his ninjutsu and turned to look at Nishikawa Tetsu.

In the rainy night, the two looked at each other.

After a long while, Fugaku Uchiha cleared his throat somewhat awkwardly. The soot on his face made him look a little comical, but he tried his best to maintain his dignity.

"Ahem... I just happened to refer to your suggestion while developing a new ninjutsu, not specifically to practice your theory."

"I understand." Nishikawa Tetsu readily offered a way out.

"As a genius of the Uchiha clan, our senior practiced diligently late into the night, striving for perfection. This spirit is something we younger generations should learn from."

Fugaku Uchiha's expression softened slightly.

He walked over to Nishikawa Tetsuya, reached out and patted Tetsuya's shoulder, much lighter than during the day.

"What happened tonight."

"I didn't see anything."

Nishikawa Tetsu immediately replied, "I just came out to use the restroom. It was too dark, and I couldn't see anything."

Fugaku Uchiha nodded in satisfaction, and a faint smile finally appeared on his lips.

"Go back to sleep, we have practice tomorrow."

"Yes."

Nishikawa Tetsu turned around and walked back.

Just as he was about to enter the woods, he heard Fugaku Uchiha's seemingly casual yet warm voice behind him:

"Oh right, we did some wading today."

"My training was passable; it wasn't too embarrassing."

Nishikawa Tetsu paused, but without turning around, he simply waved his hand with his back turned.