Chapter 15: CHAPTER 15
"We will definitely redouble our efforts in the future to strive for your recognition as soon as possible!"
"Yeah." Might Guy nodded with a thumbs-up and a gleaming smile.
"Tenten, Lee, the two of you should continue training according to our previous regimen to further refine your endurance and agility," he instructed.
Upon hearing Guy's words, Rock Lee barely hesitated before responding enthusiastically, "Yes, Guy-sensei! I'll run around the entire perimeter of Konohagakure three times at top speed!"
Seeing Lee's determination, Tenten quickly chimed in, "Guy-sensei, then I'll go for a run too!"
With that, Lee immediately dashed off, his orange leg warmers kicking up dust, while Tenten followed close behind.
Meanwhile, Kazuki remained behind with Might Guy.
"Kazuki, you've already built a solid foundation. Basic stamina drills won't be enough anymore—you need to step up your regimen."
"What kind of adjustment, Guy-sensei?"
"Weight training."
Guy's tone was serious, his sharp eyebrows knitting together.
"I recall your family runs a ninja tool shop, right? When you go home, start using weighted gear. Begin with 30 pounds per leg, and increase by 10 pounds each time you adapt."
"Understood, Guy-sensei." Kazuki nodded firmly.
He had already considered asking about Guy's famous weighted training, but before he could, his sensei had anticipated it—truly the mark of a taijutsu master.
"Alright! Then I'll start by teaching you an essential taijutsu maneuver." Guy stepped onto the training ground, gesturing for Kazuki to mirror him.
"The Konoha Whirlwind is a fundamental technique in my fighting style.
To master it, you must use your waist as the pivot, harnessing the strength of your entire body while channeling chakra into your legs.
By reinforcing your kicks with chakra, you'll drastically increase both speed and impact. Additionally, you must…"
Time passed swiftly.
In the blink of an eye, more than half a year had gone by since Kazuki and his friends entered the Ninja Academy.
The New Year had come and gone, and Kazuki, along with his sister Tenten, had turned seven.
Before they knew it, winter break was nearly over, and the academy's reopening was fast approaching.
During these six months, tremendous changes had taken place within their team.
Of the three, Kazuki's progress was the most remarkable.
His leg weights had increased from 30 pounds to an astounding 100 pounds—equivalent to the weight of a full-grown kunoichi!
For a mere seven-year-old to bear such a burden…
If anyone heard about it, they'd never believe it.
BOOM! BOOM! BOOM!
Explosive shockwaves echoed across the training grounds.
From a distance, Rock Lee halted his own drills, sweat dripping from his forehead, as he turned toward the source of the sound.
It came from the training field where Kazuki was training.
"The level of Kazuki's strength…"
Lee looked to Tenten, who was perched on a wooden post, her legs swinging idly.
"How strong is he now?" he asked curiously.
Tenten smirked, her brown eyes gleaming mischievously.
"Take a guess."
With a knowing smile, she continued, "Aside from Guy-sensei, I doubt anyone really knows just how powerful my little brother has become."
…
Meanwhile, in the adjacent training ground…
Kazuki was under direct supervision from Might Guy.
"Kazuki, are you prepared?" Guy asked, his voice steady and intense.
"Ready." Kazuki nodded resolutely.
"Then let's begin!"
"Yes, Guy-sensei!"
Dusk had begun to fall, painting the sky in shades of crimson and gold.
A gentle spring breeze rustled through the training ground, lifting strands of Kazuki's long black hair, letting them dance weightlessly in the evening air.
Kazuki narrowed his eyes.
His gaze locked onto the wooden training post twenty meters ahead, the very same type used by the Konoha shinobi for refining their taijutsu.
In the next second—
He shot forward like a kunai fired from a taut wire trap!
From stillness to explosive motion, the transition was seamless—no hesitation, no wasted energy.
In an instant—
Kazuki's muscles coiled and expanded like steel cables under tension.
His heartbeat surged to its peak, pumping chakra-infused blood through his veins, which bulged across his forehead in stark blue-purple relief.
To an untrained observer, the sight of his strained expression might have been mistaken for the activation of the Hyūga clan's Byakugan.
Tread! Tread! Tread!
His footfalls struck the ground like hammer blows, compacting the soil beneath him.
The hardened training field cracked under the sheer force of his steps, webbing outward in jagged fissures.
Kazuki leaped, twisting at the waist—
His lumbar spine coiled like a serpent, generating a rotational force reminiscent of Lee's famed Konoha Senpū.
Every ounce of his momentum transferred into his right leg—
A whip-like extension of his body, laced with unrelenting speed.
Sharp as a lightning strike, his kick connected—
"Konoha Whirlwind!"
Boom!!
The impact detonated against the training post.
A shockwave rippled outward—
Sawdust and splintered wood sprayed through the air like senbon, the stake reduced to fractured debris.
But the real devastation lay beneath the surface—
Inside the post, a dense web of cracks spread outward, as if an internal explosion had erupted from the core!
A truly fearsome display of taijutsu.
Had this strike landed on a human body—
Capillaries would have burst, internal organs displaced—
If aimed at a skull, instant death would be inevitable.
"Clap! Clap! Clap!"
A rhythmic applause echoed from the side.
Might Guy stood there, his signature grin wide with approval, his arms crossed over his green jumpsuit.
Kazuki's progress had far exceeded expectations.
Training with him for half a year had yielded results even Guy hadn't foreseen.
To display such control over the Konoha Whirlwind at this age—
It was remarkable!
As Kazuki's mentor, Guy felt an overwhelming surge of pride.
"Kazuki! That was incredible!"
His booming voice carried his excitement.
"I initially believed it would take at least two years for you to grasp the essence of the Konoha Whirlwind, but you've done it in just half a year! Your youthful flames burn brightly!"
His enthusiasm was boundless, and neither was his praise.
Kazuki, still catching his breath, smiled.
"It's all thanks to your guidance, Guy-sensei."
His gratitude was genuine.
Then, he hesitated for a moment before asking—
"Sensei, does this mean I can start learning the Konoha Renge now?"
A weighty question.
The Konoha Renge, or Primary Lotus, was leagues beyond the Konoha Whirlwind.
The difference in their names was subtle, but their gap in power was vast.
Unlike the Whirlwind, which relied on precise strikes, the Primary Lotus demanded an immense level of physical conditioning—brute strength combined with perfect control.
Its impact rivaled even Tsunade-sama's monstrous strength, an undeniable testament to its lethality.
A B-rank forbidden taijutsu.
But Guy shook his head.
"No, Kazuki. Youth must never be reckless."
His expression, usually carefree, turned serious.
He explained patiently:
"The Primary Lotus is extremely demanding on the body. You need to reach a minimum endurance threshold—specifically, the ability to handle a constant weighted load of 200 jin before attempting it."
"I've studied the physical growth and training data of many shinobi. At your age, a child's maximum safe weight tolerance is 150 jin. If you exceed this, the strain of high-intensity training will permanently damage your skeletal structure."
His voice was firm.
"No shortcuts. No rushing."
"True strength is built with patience."
Gone was the playful, boisterous Guy—
In his place stood a mentor who understood the fine line between progress and self-destruction.
Kazuki clenched his fists—
And nodded.