He collapsed without warning.
One moment he was standing, stubbornly enduring the overwhelming strain—and the next, his body gave out entirely. Naruto hit the ground hard, his face drained of all color. Sweat soaked through his clothes, pouring down like rain, while his entire body trembled uncontrollably.
"Naruto-kun!"
Hinata Hyuga rushed forward in panic, her voice trembling as she dropped to her knees beside him. Her hands hovered helplessly for a moment before she carefully tried to support his shoulders.
But Naruto was already pushing himself through something far beyond ordinary endurance.
He had activated the Yin Seal: Release.
The immense chakra he had accumulated over time surged through his body like a raging tide. It began repairing the damage he had inflicted upon himself—but the process was anything but gentle. If anything, the healing only amplified the agony.
It wasn't just pain.
It was transformation.
Every cell in his body felt as if it were being torn apart and rebuilt simultaneously. The sensation resembled blood rushing back into a limb that had gone numb—but magnified thousands, millions of times over.
And it wasn't localized.
It was happening everywhere.
Every muscle fiber, every nerve ending, every single cell.
"Ugh—!"
Naruto clenched his teeth, his nails digging into the dirt beneath him. His entire body convulsed violently as he struggled to endure the unbearable sensation.
Nearby, Shizune watched with reddened eyes, clutching Tonton close to her chest. Even the small pig seemed unusually quiet, as if sensing the gravity of the situation.
"Naruto…" she whispered, her voice thick with emotion.
Tsunade stood with her arms crossed, her nails digging into her skin. Though her expression remained stern, her eyes betrayed her concern.
She understood exactly what Naruto was going through.
And she also knew—there was nothing she could do to ease it.
Nearby, Jiraiya let out a heavy sigh, his usual carefree demeanor nowhere to be seen.
Even Sasuke Uchiha, who rarely showed emotion, felt a chill run down his spine.
He remembered pain.
The night his clan was massacred.
The endless torment of Tsukuyomi.
But that had been mental agony.
What Naruto was experiencing now… was physical suffering taken to its absolute extreme.
"...Naruto."
At that moment, Naruto's entire being seemed to be undergoing a violent rebirth.
Cells shattered.
Reformed.
Strengthened.
Over and over again.
The pain doubled, then doubled again, until it surpassed what any ordinary human could endure.
Sweat dripped continuously from his body, soaking into the ground beneath him.
His arms trembled violently as he tried to push himself up.
"Damn it…" he growled through clenched teeth. "This… this hurts more than anything…!"
Tsunade's voice cut through the chaos.
"Can you handle it?"
Naruto lifted his head, his eyes blazing despite the pain.
"I can."
With sheer willpower, he forced his shaking body to rise.
His legs wobbled.
His muscles screamed.
But he stood.
"Again!"
Without hesitation, he plunged back into training.
The second wave came.
Then collapse.
Then recovery.
Then pain again.
The third.
The fourth.
The fifth.
The training ground echoed with Naruto's hoarse roars—each one filled with agony, but also unyielding determination.
Sasuke exhaled slowly, his gaze sharpening.
"Master," he said quietly, turning to Jiraiya. "Let's go."
Jiraiya blinked in surprise. "What's gotten into you?"
"We're training too."
For a moment, Jiraiya stared at him.
Then a small smile appeared.
"Yeah… you're right."
He turned toward Tsunade.
"I'm leaving Naruto to you."
Tsunade gave a short nod. "Mm."
As Jiraiya and Sasuke walked away, Jiraiya glanced back one last time.
For a fleeting moment, Naruto's silhouette overlapped with another.
A familiar figure.
"Minato…" he murmured. "Your son will surpass you."
Back at the training ground, Tsunade, Shizune, and Hinata continued watching.
Naruto's body repeatedly broke down and rebuilt itself in a brutal cycle.
Even just watching it made their skin crawl.
"Naruto-kun…" Hinata whispered, her fists clenched tightly.
She wanted to help.
But she couldn't.
All she could do… was watch.
And pray.
Tsunade turned away abruptly.
"Shizune," she said, her voice firm, "this is her first day of training. Stay here and supervise."
"Yes, Lady Tsunade."
"And Hinata—don't focus only on Naruto. Don't neglect your own training."
Hinata froze for a moment.
Then nodded firmly.
"…Yes!"
As Tsunade left, Hinata closed her eyes tightly.
She forced herself to look away from Naruto.
Forced herself to steady her heart.
Then—
She began training.
"Naruto-kun… I won't fall behind you."
"I won't be worthy of standing beside you otherwise."
Shizune watched both of them—the boy enduring hell and the girl pushing herself forward—and tears filled her eyes.
"You two…" she whispered, smiling through her tears. "You're both incredible…"
Tonton gave a small, sympathetic "oink."
From that day forward, Naruto's life became a living nightmare.
Everything he had endured before?
It felt like paradise in comparison.
If his past training had been like struggling against a river's current…
This was drowning in an endless ocean.
Every day, he pushed himself beyond his limits.
Every day, his body shattered.
And every day, it rebuilt itself stronger than before.
He would collapse into sleep immediately after training.
But when he woke the next morning—
He could feel it.
He was stronger.
Just like a bone that becomes tougher after breaking and healing…
Every single one of the trillions of cells in his body was evolving.
This hellish training continued for half a month.
One day, Tsunade returned to the training ground to evaluate his progress.
What she discovered left her stunned.
"Naruto… your cellular activity has increased to nearly 150 times that of a normal person."
Naruto blinked in surprise.
"That much?!"
Tsunade nodded, still visibly shocked.
"In just half a month… you've already completed half your goal."
"…That's unbelievable."
A rare smile appeared on her face.
"At this rate, you'll be ready in about another month and a half."
"To begin the true training."
Naruto's eyes lit up.
"The… Wind Release Chakra Mode?!"
Tsunade nodded.
Naruto clenched his fists, excitement surging through him.
After enduring such inhuman torture—
He was finally seeing results.
But then Tsunade's expression turned serious.
"However…"
Naruto looked up.
"The chakra you stored in your Yin Seal has been completely depleted."
"…!"
"From now on, your progress will slow significantly."
"You'll need to divide your time—one day storing chakra, the next breaking down and rebuilding your body."
Naruto nodded without hesitation.
"I understand."
Tsunade let out a quiet sigh of relief.
At least he wasn't reckless.
"But even so," she added, "you should be ready within a month."
Naruto's heart pounded.
A new power.
A new realm.
Something that belonged to him alone.
"I can't wait…" he murmured.
Watching him, Tsunade smiled faintly.
Since becoming Hokage, she had made many changes.
The oppressive, stagnant atmosphere left behind by Hiruzen Sarutobi was slowly being replaced.
She had begun promoting the younger generation.
Relying on them.
Trusting them.
Because she knew—
The future didn't belong to the old.
Even so, the so-called elders—led by Danzo Shimura—still held immense influence.
They obstructed her at every turn.
Progress was slow.
Difficult.
And time… was running out.
Outside the village, threats like Orochimaru and the Akatsuki lurked in the shadows.
War could come at any moment.
Tsunade looked back at Naruto.
Despite everything—
She felt hope.
"Naruto…" she said softly.
"You are the future of Konoha."
"And the future of the ninja world."
For a rare moment—
The Fifth Hokage allowed herself to feel emotional.
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