Following Hatake Sakumo, they soon arrived at a vast, open training ground.
It was still deep underground.
Dim. Silent.
Carrying an oppressive, abyss-like atmosphere.
Yuya couldn't help but marvel at the perfection of Konoha's underground facilities.
They were enormous.
And not just large—
Their structure was astonishingly intricate and precise.
Something ordinary people could never hope to accomplish.
But for shinobi, it wasn't impossible.
With enough Earth Release specialists, constructing such an underground complex would only take time.
Accompanying Sakumo and Yuya were several squad leaders, team leaders, and a handful of ordinary ANBU.
The rest all had missions.
Even though many desperately wanted to witness Sakumo personally train Yuya, they couldn't abandon their duties—otherwise chaos would ensue.
"Alright," Sakumo said, stopping in front of Yuya.
"Attack me directly. Use your strongest technique—no, use any attack you believe could defeat me."
Yuya felt the urge to complain internally.
He honestly believed no attack he had could defeat Hatake Sakumo.
But the very next moment, Yuya struck without hesitation.
Up to now, nearly every opponent Yuya had encountered had been overwhelmingly crushed by him.
As a result, he didn't truly know where his weaknesses lay.
Sakumo was far stronger than him.
With someone like Sakumo acting as a sparring partner, Yuya could finally identify his shortcomings—and figure out how to grow even stronger.
Whoosh!
Facing Konoha's White Fang, Yuya had no intention of holding back.
The instant he moved, he went all out.
Yuya erupted with his full speed, turning into a blur as he appeared at Sakumo's right side—
Then threw a punch.
Boom!!
Sakumo showed a hint of approval.
At that speed, among chūnin, very few could rival Yuya.
Of course, to Sakumo, even if Yuya were twice as fast, it would still be easy to react.
With a flicker of movement, Sakumo casually avoided the blow.
Yuya didn't pause.
His punch detonated with shock-force chakra, and he immediately charged again.
Seeing this, Sakumo fell into brief contemplation.
He continued to evade or block, never counterattacking—allowing Yuya to press forward freely.
From the outside, it looked as though Yuya was pressing Sakumo back.
But in truth, Yuya felt helpless.
No matter what he did, he simply couldn't touch him.
Still—
He had to keep attacking.
Even if he couldn't win, he had to perform at his absolute best.
Boom! Boom! BOOM!!!
Explosions echoed throughout the field.
Most came from the ground shattering under Yuya's blows, though occasionally the sound came from direct clashes between the two.
The observing ANBU watched with flickering eyes, stunned by the power Yuya displayed.
Most of them hadn't witnessed Yuya's battle in the Forest of Death.
"Casual strikes with B-rank ninjutsu–level power?"
"And the chakra consumption doesn't even seem that high."
"A terrifying bloodline ability…"
The squad leaders remained composed, their masked expressions calm and restrained.
But the ordinary ANBU—and even some team leaders—were visibly shaken.
If they were facing Yuya themselves…
It would be extremely difficult.
Yuya's ability was simply too troublesome.
Unless one possessed A-rank or higher ninjutsu, there seemed to be no reliable way to break through his defense.
Strong.
Very strong.
That was the unanimous conclusion of everyone present.
Yuya's earlier feat—single-handedly defeating every ANBU candidate—had already proven it.
At the chūnin level, almost no one could stand against him.
After watching for a while, even several full ANBU silently admitted defeat in their hearts.
The spar continued.
Yuya's attacks were dazzling—
Every punch shattered the air, leaving mirror-like fractures behind.
Meanwhile, Sakumo continued to move fluidly across the field, clearly gauging the range, intensity, and behavior of Yuya's shock-force chakra.
Taking a deep breath, Yuya once again closed in.
This time, he clenched his fist tightly.
Chakra surged within him, gathering instantly at his knuckles.
Shock Release: Monstrous Strength Unleashed!
BOOM!!
The punch that followed was completely different from the previous ones.
Not only was it significantly stronger—
It was far more condensed, with its destructive power tightly focused.
Sakumo, who believed he had already fully grasped Yuya's strength, abruptly changed expression.
"Monstrous strength?!"
He had sensed something unusual the moment Yuya's chakra surged—but only now did he fully recognize it.
Surprise flashed across his face.
He hadn't expected Tsunade to teach Yuya this technique—
Nor that Yuya would actually master it.
As ANBU Captain, Sakumo was well-versed in secret techniques.
He knew just how difficult monstrous strength taijutsu was to learn.
Yuya had only been learning it from Tsunade for a few months at most—
And he had already succeeded?!
RUMBLE!!
The shock-force exploded outward.
Its range was slightly wider than before, causing Sakumo to misjudge by a fraction.
He was completely engulfed by the attack.
"Not good."
The instant the force struck his body, Sakumo's expression changed again.
This time—
He couldn't tank it head-on.
Even if he avoided injury, it would be far from graceful.
Yet even in this situation, Sakumo showed no panic.
Instead, the admiration in his eyes deepened.
Shing!!
No one present could clearly see when Sakumo drew his blade.
The short, white chakra saber—White Fang—seemed to materialize out of thin air in his hand.
Then—
He swung it toward the incoming shock-force.
Terrifying chakra surged along the blade.
Its brilliance was blinding, its edge seemingly capable of splitting anything in two.
This—
Was Hatake-style kenjutsu.(Hatake swordsmanship).
Through the advanced application of chakra flow, a single slash became nearly unstoppable.
Even ninjutsu could be cut apart.
There was no sound.
As if even sound itself had been severed.
Before this blade—
The world seemed to dim.
Slash!
In a single instant—
Yuya's shock-force was cleaved straight down the middle.
The chakra-flow–infused edge cut through everything.
"That's the captain's chakra blade—White Fang!"
"Chakra flow… this level of control is unbelievable."
The observing ANBU couldn't help but gasp in awe.
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