Naruto: Rebirth of the Supreme Demon.

[System Notification]

Emergency Event Triggered: "The Reaper's Gambit"

• Objective: Protect Akeno Himejima from Nyx's Veil attack.

• Bonus Objective: Confront the Night Reaper directly.

• Rewards: 6,000 XP, Evolution of Destruction Magic, Special Title Unlock.

Kuoh Academy – Under Siege

The moment Naruto and Rias teleported into the school grounds, chaos greeted them.

The once peaceful Kuoh Academy was now a battleground. The sky was shrouded in dark clouds, lightning crackling ominously. The air was thick with demonic energy, and faint screams echoed in the distance.

Nyx's Veil assassins swarmed the grounds, clad in dark cloaks, their faces hidden by masks etched with the same cursed sigil Naruto had seen before. Their movements were swift, precise—trained to kill.

But Naruto didn't care about any of that.

His eyes were locked on one thing:

Akeno Himejima.

She was surrounded, her usual calm and playful demeanor replaced by sheer determination. Despite the odds, she fought fiercely, her lightning magic crackling violently, frying multiple enemies at once.

But even Akeno couldn't hold out forever.

A massive assassin—clearly a commander—stood before her, his weapon a black glaive dripping with cursed energy, prepared to deliver the finishing blow.

"AKENO!"

Naruto's roar echoed through the battlefield as he vanished, his speed surpassing what even devils could track.

[System Notification]

New Battle: "Protect Akeno Himejima"

• Primary Objective: Defeat the commander before Akeno is fatally wounded.

• Bonus Objective: Eliminate all enemy operatives without assistance.

"Demonic Compression Blade!"

Naruto's weapon materialized mid-stride, its black-red aura surging with deadly energy. In a blink, he was between Akeno and the assassin, his blade clashing with the glaive in an explosive burst of light.

CLANG!

The impact sent shockwaves through the academy, shattering windows and throwing debris into the air.

Naruto didn't hesitate. His fury fueled him.

"Frozen Calamity!"

A burst of freezing magic exploded from his free hand, encasing the commander's legs in ice, locking him in place.

With a feral grin, Naruto's blade found its mark—piercing through the assassin's chest with brutal precision.

The commander gasped, his body disintegrating into ash.

[Battle Complete!]

• Objective Achieved: Protected Akeno.

• Bonus Achieved: Defeated the commander without external help.

• Rewards: +6,000 XP, Unique Skill Unlock: "Abyssal Surge," Increased Relationship with Akeno.

Aftermath

Naruto turned to Akeno, breathing heavily.

"You okay?"

Akeno, her face flushed from both exertion and relief, managed a shaky smile. "Ara~ You always know how to make an entrance."

Naruto smirked, but his expression softened as he noticed the faint cut on her cheek, blood trickling down.

Without thinking, he reached out, gently brushing the blood away.

For a brief moment, everything else faded—the battle, the chaos—leaving only the two of them.

Akeno's breath hitched.

"You… saved me."

Naruto's grin faded into something softer. "I always will."

Before either could say more, Rias arrived, her eyes quickly assessing the situation. Relief flickered across her face when she saw both of them safe.

But that relief was short-lived.

The sky above them ripped open, as if reality itself had been torn apart.

Descending from the rift was a figure clad in shadow, his form indistinct, yet his presence undeniable.

The Night Reaper.

His aura was suffocating, a mix of darkness and something ancient—something wrong.

Naruto's grip on his blade tightened.

"So, you finally showed up."

The Night Reaper's voice was a whisper, yet it echoed as if spoken from every direction at once.

"You've become quite the nuisance, Uzumaki."

Naruto smirked. "And you're uglier in person."

The Night Reaper didn't react to the taunt. "Your power isn't yours to wield. You are a mistake—a glitch in the fabric of this world."

Naruto stepped forward, unafraid. "Funny. I was just thinking the same thing about you."

[System Notification]

Boss Battle Initiated: "The Night Reaper"

• Objective: Survive the Night Reaper's assault.

• Bonus Objective: Unlock a fragment of your true power.

• Rewards: 10,000 XP, Evolution of Destruction Magic, Title: "Reaper's Bane."

The Battle Begins

The Night Reaper moved like a shadow given form—faster than anything Naruto had faced before. His attacks weren't just physical; they ripped through space itself, creating voids that tried to consume Naruto whole.

But Naruto wasn't backing down.

"Abyssal Surge!"

A newly unlocked ability surged from within him—a combination of Destruction Magic and chaotic energy. His aura flared violently, pushing back the Reaper's attacks with raw force.

They clashed in the sky above Kuoh Academy, their battle illuminating the night like a second sun.

Naruto's strikes were fierce, each one fueled by a mixture of rage, determination, and something deeper—something ancient stirring within him.

The Night Reaper finally faltered, and Naruto saw his chance.

With a roar, he unleashed everything.

"DEMONIC NOVA!"

A sphere of pure destruction, infused with chaotic energy, exploded outward, engulfing the Reaper.

When the light faded, the Night Reaper was gone—but not dead.

His voice echoed from the shadows.

"This isn't over, Uzumaki. You cannot outrun fate."

Naruto landed beside Rias and Akeno, breathing heavily.

"Good," he muttered. "I'm done running."

[Boss Battle Complete!]

• Objective Achieved: Survived the Night Reaper's assault.

• Bonus Achieved: Unlocked a fragment of your true power.

• Rewards: +10,000 XP, Evolution of Destruction Magic (Tier 2), Title Unlocked: "Reaper's Bane."

Later That Night – Gremory Mansion

Naruto stood on the balcony, staring at the moon. His body still burned from the fight, but it wasn't the physical wounds that bothered him.

It was the truth the Night Reaper had hinted at.

"I'm more than just a reincarnated devil. But what am I really?"

Akeno approached quietly, standing beside him.

"Thank you," she whispered.

Naruto glanced at her, his usual grin softer. "You're welcome."

Akeno hesitated, then leaned in, pressing a gentle kiss to his cheek.

"For saving me."

Naruto blinked, then chuckled. "I could get used to this."

Akeno smiled, her eyes shining in the moonlight. "Good."

As she left, Naruto's system flashed one final message.

[New Main Quest Unlocked: "The Truth of the Catalyst"]

• Objective: Discover the true source of your power.

• Bonus Objective: Confront the Night Reaper's master.

• Rewards: Unknown.

Naruto's smile faded as he stared at the stars.

"Whatever I am… I'm going to find out."

To Be Continued…

Next Chapter Teasers:

• The origins of Naruto's reincarnation are revealed.

• Rias and Akeno's feelings come to a boiling point.

• A betrayal within the Underworld shakes the foundation of power.

• Naruto faces a truth that changes everything.