A few years ago, the seal placed by the Fourth Hokage showed its first signs of "weakness" in Kyūbi's eyes.
Of course,
This "weakness" was merely a tiny crack at the edge of the seal, leaking a minuscule portion of his true power.
When the beastly orange chakra enveloped little Naruto within the mental space, Kyūbi stretched his lips into a wild, savage grin.
Everything has a beginning, and Rome wasn't built in a day.
But Kyūbi knew that once the seal had been compromised, his release was only a matter of time.
So now… would the kid lose control under the influence of his power, or be completely devoured by it?
In the real world…
Sitting on the balcony, Naruto's eyes suddenly snapped open.
His blue pupils were now tinted blood red, with a vertical slit like a fox's.
It changed his entire aura.
His once somewhat naïve, youthful face now bore a slightly fierce expression.
Clack.
Standing up, Naruto gazed beyond the balcony, taking in the view of Konoha.
A steady stream of foreign chakra was seeping through the cracks of the Eight Trigrams Seal on his stomach.
Chakra was the source of everything—the foundation of power.
In this world, the more chakra you had, the stronger you were.
Under Kyūbi's eager gaze, Naruto leapt off the balcony, jumping a good 7 to 8 meters without hesitation.
Swish.
Landing steadily, Naruto quickly made his way to the small forest where he often trained.
This peaceful spot, marked by targets and wooden posts, was his secret garden, where he practiced taijutsu.
Facing a post that had once barely dented under hundreds of hits, this time… would be totally different.
Boom!
The small fist struck, and the post exploded as if hit by a high-caliber bullet, splinters flying everywhere.
"…"
Naruto nodded in satisfaction.
Then he continued his punches and kicks, training in the woods.
Each clumsy move unleashed powerful shockwaves and destruction.
Such was the power of a Jinchūriki under Kyūbi's influence.
Yet to Kyūbi, all of this was utterly incomprehensible.
Kyūbi: "This kid… he didn't lose control?!"
He had received Kyūbi's unfiltered chakra directly—saturated with hatred for humans—and yet, he wasn't affected in the slightest?!
"Impossible…"
Kyūbi couldn't help but groan.
Even Kushina, the previous Jinchūriki from the pure Uzumaki clan, had suffered uncontrollable rages from the negative emotions carried by his chakra.
Was it because of the Eight Trigrams Seal?!
Confused, Kyūbi simply watched in shock as the boy practiced his so-called "pathetic taijutsu."
"Tch…"
The morning passed quickly.
Naruto wiped the sweat from his forehead and went to bathe in the nearby river.
"I'm starving, time to head back…"
Under Kyūbi's still-dumbfounded gaze, Naruto, whose eyes retained their crimson slits, calmly made his way home.
---
In the days that followed…
Naruto continued to adapt to Kyūbi's power.
Under the beast's gaze, which shifted from shock to confusion to regret, his strength only grew.
One kick could shatter a mid-sized tree; one punch obliterated a boulder the size of a kettle.
Kyūbi felt like he'd been tricked, offering his chakra for free to this brat.
But eventually, the opportunity Kyūbi had long awaited finally came.
"Mmm…"
That morning, Naruto struggled to sleep.
Constantly using Kyūbi's power didn't just give him more strength, but overflowing energy too.
No matter how tired he was the day before, a little rest was enough to return him to peak condition, thanks to Kyūbi's regenerative chakra.
However, prolonged exposure to Kyūbi's chakra—especially its overflowing vitality—eventually led to unexpected side effects…
Especially for a young human child exposed to it 24/7.
In front of the mirror, Naruto noticed that his body had slightly changed since the previous month.
His eyes stayed red and feline, and his physique was more muscular.
And above all…
"It's swelling…"
Naruto stared at a certain part of his body that was pulsing strangely.
For his age, he was already… exceptionally well-endowed.
"Why is it doing that?"
Naruto thought he might be sick.
He asked his inner tenant, but the beast refused to explain.
"Maybe he doesn't know either…"
In any case, feeling uneasy, Naruto decided to go for a walk.
Maybe visit a doctor, or just move around a bit.
---
Konoha, outside the Uchiha district, in an alley near a shop.
Three children surrounded another kid.
Upon closer inspection, the child had delicate, refined features and bore the Uchiha crest on their clothes.
"You want something, you three?"
She looked up at them.
Her graceful face, typical of the Uchiha, was at that age… incredibly cute.
Just looking at her made you feel inferior.
The three boys, with their hard, plain faces, pointed accusing fingers.
"An Uchiha summoned the Kyūbi, right? How dare you still walk around the village like this?!"
The Kyūbi disaster, a few years ago, had caused unimaginable suffering for Konoha's residents.
Rumors were spreading, blaming the Uchiha.
"My brother was killed by the demon fox back then!"
"The Uchiha are everyone's enemies!"
The three boys began to hurl vicious insults.
The girl, initially calm, felt anger rising within her.
"Unstable posture, weak arms…"
As an Uchiha and daughter of the Military Police Captain, she had been trained by her brother from a young age.
She could tell immediately these three were nobodies.
A proud Uchiha could crush them in an instant.
But the consequences could bring trouble to her parents, even her entire clan.
So…
She looked around, scanning her surroundings.
It was a dark alley, hidden from view.
If no one saw…
"Huh?!"
Suddenly, a strange expression appeared on her face.
The three boys, too focused on insulting her, didn't notice anything.
"It's not nice to bully people~."
A childish voice echoed behind them.
"!"
The three brats spun around instantly.
In front of them stood a boy in a tacky orange tracksuit, with messy blond hair.
He looked totally stupid.
But two scarlet lights gleamed in his vertical pupils.
A fierce aura radiated from him.
Two seconds later, the three boys were trembling, sweat dripping from their foreheads.
"Don't move."
The young Uchiha crossed her arms, watching the scene with amusement.
"Him… he's not someone you can handle."
"Shut up, filthy Uchiha!"
The leader, red with rage, shouted at her.
But the moment he turned to Naruto—
Smack.
Naruto reached out, his cold fingers clamping down on the boy's face.
Crack… snap…
The skull's bones creaked under the pressure.
"Ugh… ugh…"
Terrified, the three froze.
Bang!
In the next instant, the kid was flung like a garbage bag—
—To the other end of the alley.
"!!??"
Seeing their friend literally launched, the other two panicked.
But before they could react, Naruto sent them flying as well.
"You okay?"
After dispatching the three in a flash, Naruto gave the girl a bright, innocent smile.
This Uchiha… she's truly beautiful…