I Became Narutos Blackened Personality

Inside the Sarutobi Clan Mansion, Hiruzen exhaled a long breath, his expression dark and unreadable as he clenched his pipe between his teeth.

His eyes glowed coldly as he watched the events unfold through his crystal ball.

"This fool, Mizuki… He really has a death wish, doesn't he?"

A deep frown settled on his face.

"Daring to pit Naruto against me? Spreading the truth like this?"

Hiruzen had already planned to eliminate Mizuki, but now?

Now, he wanted the man to suffer first.

"Let Ibiki have his fun before disposing of him. Let him stay in T&I for as long as possible."

Hiruzen's fingers tightened around his pipe, a flicker of irritation passing through him.

In hindsight, he should have had an Anbu test Naruto instead—someone he could control.

But it was too late to change things now.

The damage was done, and the only option left was to patch up the cracks.

Luckily, his decades of careful manipulation still held strong.

Naruto was a pariah, a village-wide scapegoat.

With no other attachments, he would cling to the only light available—Hiruzen himself.

"Naruto… let's see what you do next."

He leaned forward, watching the crystal ball with sharp eyes.

"Don't disappoint me."

…

In the forest, the air turned frigid.

The very temperature plummeted, sending an unnatural chill creeping through the trees.

Naruto was no longer in control.

Fengxu had taken over.

His eyes burned cold, brimming with raw, murderous intent.

A wave of suffocating pressure radiated from his small body, distorting the air around him.

Mizuki—still trapped in Fengxu's iron grip—felt the shift instantly.

The brat's entire presence had changed.

The trembling, devastated child from moments ago?

Gone.

In his place stood something else entirely.

Something monstrous.

A force of pure, boiling hatred.

Mizuki snarled, forcing himself to ignore the creeping fear slithering up his spine.

"You still have some fight in you? Not bad."

Even though Fengxu's grip was like steel, pinning his arm in place, Mizuki refused to panic.

"A brat is still a brat."

At the end of the day, this was just a child.

Naruto was nothing more than a rampaging fool having one last fit before death.

This was nothing to be afraid of.

And the seal wouldn't break.

Everyone knew that.

The Nine-Tails was locked inside Naruto—not just with the Four Symbols Seal, but with Hiruzen's constant monitoring.

If Kyuubi could have escaped from inside, it would have done so years ago.

No—the only way to break the seal was from the outside.

Which meant Naruto still needed to die.

Mizuki's lips curled into a sneer.

Fengxu inhaled deeply, letting the crisp scent of trees and night air fill his lungs.

His grip tightened around Mizuki's arm.

"You were smiling just now."

The words were calm, but the weight behind them was deadly.

And then—

A crack echoed through the forest.

Ding!

[ Exchanging Chunin Taijutsu (Iruka) – 50 Blackening Value ]

[ Exchanging Chunin Taijutsu (Mizuki) – 60 Blackening Value ]

[ Exchanging Elite Jōnin Taijutsu (Hiruzen Sarutobi) – 800 Blackening Value ]

(Includes enhanced physical fitness. Due to old age, Hiruzen's base strength is below Kage-level.)

[ Current Blackening Value: 3010 ]

Originally, Fengxu had planned to exchange for the One-Tailed Chakra Mode.

But he changed his mind.

The real threats weren't Mizuki.

They were the watchful eyes of Akatsuki, of Konoha, of other villages.

Revealing too much power too soon would paint a target on his back.

"No need to rush."

For now, he would wait.

Follow the original timeline.

"I'll claim the Nine-Tails when we reach the Land of Waves."

But until then…

Taijutsu first.

"Now…"

His fingers clenched down hard.

Mizuki screamed.

His arm snapped at an unnatural 90-degree angle, bones jutting beneath the skin.

The sound was sickening, echoing through the trees like the crunch of broken twigs.

"AAAAAGHHH—!"

His body jerked violently, his breath coming in ragged gasps.

But he wasn't done yet.

His free hand flew up, reaching for Fengxu's neck.

"DIE, YOU DISGUSTING FOX DEMON—"

Snap.

A kunai flashed in the moonlight.

And in an instant—

Mizuki's left arm was gone.

Ding!

[ Blackening Value +2 ]

[ Blackening Value +3 ]

Fengxu's smile widened.

"Mizuki-sensei…"

He twirled the bloody kunai, stepping closer.

"You're weaker than I expected. How disappointing."

Mizuki staggered backward, his face twisted in horror.

This wasn't the brat he had taunted earlier.

The cold, calculating hatred in Fengxu's gaze terrified him.

"You're not Naruto… You're… You're a demon…"

Mizuki's breath hitched.

"You broke the seal!"

Fengxu laughed.

"Seal? No, no, no."

He tilted his head, mocking.

"The real fox demon wouldn't be playing games with you."

Mizuki's hope sparked, desperate to grasp any lifeline.

"Games? I-I can play games! Let's play anything you want—just let me live!"

Fengxu knocked his kunai against a nearby tree, his smile widening.

"Alright. Let's play… Tag."

Mizuki froze.

"If I count to 100 and don't catch you, you win."

"The prize? Your life."

His mocking, childlike tone sent ice down Mizuki's spine.

"Now run."

Mizuki didn't hesitate.

He turned and sprinted into the forest, ignoring the pain of his mutilated arms.

"100… 99… 98…"

The counting began.

"Faster, Mizuki-sensei."

"I'm catching up~"

A flash of silver—

A kunai sliced across Mizuki's back, searing pain igniting his nerves.

"AAAGH!"

"75… 74… 73…"

Mizuki bit down a scream, pushing forward, desperation fueling his every step.

But the next attack—

"AHH!"

His right leg snapped, sending him crashing to the ground.

"40… 39… 38…"

Tears streamed down his face as he dragged himself forward.

"I… I'm still alive…"

His eyes widened with hope.

"3… 2…"

A long pause.

Silence.

Mizuki's lips curled into a shaky smile.

"I… I won…"

Shhk!

A kunai pierced through his chest.

Fengxu's voice whispered in his ear.

"Hehe, Mizuki-sensei… you lost."