Naruto: Rebirth of the Supreme Demon.

[System Notification]

Main Quest Active: "The Truth of the Catalyst"

• Objective: Discover the true source of your power.

• Bonus Objective: Uncover the connection between the Night Reaper and the Underworld's ancient past.

• Rewards: ??? (Unknown), Potential Divine or Abyssal Awakening.

Gremory Mansion – War Room

The war room inside Gremory Mansion was filled with an oppressive silence. Naruto sat at the head of the table, arms crossed, his crimson eyes sharp and unreadable.

Rias, Akeno, Koneko, and Kiba sat around him, each of them aware that the battle against Nyx's Veil was no longer just about survival—it was about uncovering the truth.

The recent clash with the Night Reaper had shaken even Rias. The way he spoke to Naruto, as if he were something more than just another devil, had left lingering questions.

"Let's go over what we know," Naruto said, breaking the silence.

Kiba nodded, his fingers tapping lightly against the table. "Nyx's Veil isn't just an assassin organization. They're an ancient cult tied to something older than the Devil Clans."

Akeno's violet eyes darkened. "And the Night Reaper… he's not a normal entity. His power is unnatural—void-like, almost like an absence of existence itself."

Koneko frowned. "And he seems obsessed with Naruto."

Naruto leaned forward. "Not just obsessed—he called me a glitch in this world."

The words hung in the air like a death sentence.

Rias folded her arms. "That's what bothers me the most. If this is just about power, there are other strong devils in the Underworld. Why you?"

Naruto clenched his jaw. "Because I don't belong here."

Silence.

Kiba frowned. "You mean…?"

Naruto exhaled, running a hand through his hair. "Think about it. I'm a Bael with no recorded history, no real past. I have powers that shouldn't exist, a combat instinct beyond anything a noble devil should have, and now we have a shadowy organization treating me like I'm the end of the world."

Akeno's expression tightened. "You think your reincarnation wasn't natural?"

Naruto's system chimed, a new notification flashing in his vision.

[Hidden Data Unlocked]

• Your soul is not entirely from this world.

• You were not just reincarnated—you were brought here for a purpose.

• Nyx's Veil considers you a "Catalyst"—a force capable of rewriting fate.

Naruto stood abruptly, his chair scraping against the floor.

"Yeah," he said quietly. "And I think the Night Reaper knows why."

Scene Change – Underworld's Forbidden Archives

If there was any place that held the truth about Naruto's existence, it was the Forbidden Archives deep within the Leviathan Family's territory.

Naruto and Rias traveled through a portal, stepping into a massive underground vault, filled with ancient tomes, artifacts, and records hidden from even the Great Satans.

Waiting for them was Serafall Leviathan, her usual playful nature replaced with serious intensity.

"Naruto-kun, Rias-chan," she greeted, her sapphire eyes calculating. "You sure about this? Once we go in… there's no turning back."

Naruto smirked. "I don't do half-measures."

Serafall sighed. "Figured you'd say that. Alright, follow me."

The Truth Revealed

The deeper they ventured, the colder the air became.

Serafall led them into a sealed chamber, where an ancient mural covered the walls—depictions of gods, devils, and a battle that shook reality itself.

Naruto's eyes locked onto a particular figure in the mural—one that bore a striking resemblance to him.

A warrior wreathed in flames and shadows, standing at the center of a cosmic war.

Serafall's voice was quiet but firm.

"This is a record of the Great Fracture—an event so ancient even Lucifer himself didn't know its full history."

Rias's breath hitched. "The Great Fracture? That's a myth—something scholars debated but never confirmed."

Serafall shook her head. "It's real. And Naruto… you were a part of it."

Silence.

Naruto clenched his fists. "Explain."

Serafall pointed to the warrior in the mural. "This man… was a being known as the Catalyst of Chaos. A force neither divine nor demonic, but something beyond both."

Naruto narrowed his eyes. "And what happened to him?"

Serafall's gaze darkened.

"He was erased."

Naruto's system flared with red warnings, data flooding his vision.

[System Alert!]

Your Soul's Fractured Memory Is Awakening…

• You were once a being of unimaginable power.

• The gods feared you. The devils sought to control you.

• In the end, they erased your existence from reality itself.

Naruto staggered, gripping his head as flashes of fragmented memories hit him like a tidal wave.

Memory Flashback – The War Before Time

Fire. Shadows. Screams.

He stood alone against a pantheon of divine and demonic beings, his body wreathed in a power that defied existence itself.

They called him the Catalyst of Chaos.

And they betrayed him.

The last thing he remembered was a searing pain as reality itself collapsed around him.

Then—

Oblivion.

Back to the Present

Naruto gasped, his breathing ragged, sweat dripping down his face.

Rias rushed to his side, gripping his shoulder. "Naruto!"

Serafall looked at him with something close to fear.

"You're not just a reincarnated devil," she whispered. "You're a reset anomaly—a being that wasn't supposed to come back."

Naruto clenched his jaw, his magic surging uncontrollably, shaking the entire vault.

"And the Night Reaper?" he asked, voice low.

Serafall hesitated. "…He was one of them."

Naruto's system flashed again, revealing the final piece of information.

[Final Truth Unlocked]

• The Night Reaper was once a servant of the gods, tasked with ensuring the Catalyst of Chaos never returned.

• Now that you are back, he will stop at nothing to erase you once more.

• You are not just his target—you are his greatest threat.

Naruto exhaled, his crimson eyes flashing with newfound resolve.

"Good," he muttered.

Rias and Serafall both stared at him in shock. "Good?" Rias repeated. "Naruto, this means you're being hunted by something beyond even the Great Satans!"

Naruto smirked.

"Then it's time I start hunting back."

[Main Quest Updated: "The Truth of the Catalyst"]

• Objective: Prepare for the inevitable clash with the Night Reaper.

• Bonus: Begin awakening your original power.

• Rewards: ??? (Unknown).

To Be Continued…

Next Chapter Teasers:

• Naruto begins training to awaken his true abilities.

• A confrontation with Azazel, who knows more about the war than he's letting on.

• The Night Reaper makes his next move—this time, targeting Rias.

• A shocking betrayal shakes the Underworld to its core.