Harem Startup : The Demon Billionaire is on Vacation

Chapter 667 – Abyss Overlord

Finally, Lux said, ”I’ll handle it.”

Sira frowned. ”You can’t handle everything, Lux.”

He looked at her, eyes flashing.

”Yes,” he said simply. ”I can.”

She was quiet for a long beat.

Then... ”I’m coming back.”

”I know.”

That almost made Sira smile.

Almost.

”Stay alive until I get there,” she said.

Lux winked. ”What’s the fun in dying before the end of the vacation?”

The call ended.

Silence returned.

Corvus fluttered down to the table, eyeing him carefully. ”So?”

Lux downed the rest of his drink.

Then smiled... slow and dangerous.

”So,” he echoed. ”Let’s clean the mess. And then we’re still in vacation mode.”

Corvus blinked. ”How?”

Lux grinned wider, teeth sharp.

”If old demons want to poke the monster,” he said, cracking his neck, ”then I’m going to remind them exactly what Greed looks like in a three-piece suit.”

Lux turned away from the hologram, half a plan already forming in his mind, but he didn’t even get a step toward the stairs before he felt it.

That pressure.

Not emotional. Not magical.

Something older.

Something that made the polished marble floor feel like it was vibrating. Like reality itself had swallowed a deep breath and wasn’t sure it could exhale again.

The windows began to fog slightly, condensation forming along the glass edges like sweat down a trembling back. The sunlight that had lit up the Beberly Hills skyline dimmed unnaturally, like clouds had rolled in, but there were no clouds. Just weight.

Heavy.

Impossible.

[WARNING: Infernal-class aura detected.]

[Location: Front gate. Origin: Ancient-class demon. Title: UNKNOWN.]

[Power Class: Abyssal Overlord Tier.]

Lux muttered without missing a beat. ”...F*ck me.”

Corvus let out a dry caw from the stair railing. ”Should I make preparations for that?”

Lux didn’t even glare. ”I was talking to myself, not offering.”

The system pinged again.

[Aura Analysis Complete: Entity registered under dormant records. Title: Abyss Overlord Zehar.]

Oh. Perfect.

He didn’t even have time to strategize before...

”Luxy...”

The soft voice came from nowhere.

Then everywhere.

Then right beside him.

Lullaby.

One blink, and she was there, curled in oversized fuzzy pajamas, with her pale hair unbraided, floating slightly from residual teleport shimmer. She looked sleepy as hell, barefoot, barely upright, but her wide eyes were open.

And that was bad.

Very bad.

Because if a daughter of Sloth was awake before 8 AM?

This was a capital B Big Deal.

Lux turned, his smirk gone.

”Lulla...”

She looked up at him, lip trembling slightly. ”That aura woke me up.”

She hadn’t even brushed her hair. She was still holding her plush void-bunny in one hand.

Lux downed the rest of his juice like it was whiskey and didn’t flinch at the burn.

”Let’s go.”

They didn’t use the door.

The moment they teleported, their forms rippled.

Lux shed the pretense of his mortal glamour.

His horns unfurled like coiled obsidian, curving backward like a crown. Greed’s bloodline shimmered across his skin in gold-tinted runes, luminous against his sharp black suit. Wings of midnight, laced with thin gilded veins, tore into existence behind him, elegant, dangerous, beautiful.

Lullaby shifted beside him, her Sloth aura gently flowing like slow fog. Her wings were translucent, dreamy, shifting between shapes like liquid smoke. Her horns were small, more ornamental than functional, and her aura curled protectively around Lux like she couldn’t help it.

They hovered just outside the mansion gates.

And froze.

Because standing, if you could call it standing, on the other side was something that did not belong in this realm.

Or maybe any realm.

The air distorted around it. Its presence pulled shadows toward it like gravity. The demon’s shape was vaguely humanoid, but only in the same way a tidal wave was ”vaguely like a wall.” Its body was wrapped in robes that looked like they were made of screaming faces, stitched together by threads of abyssal black fire. Its head was hornless, but its eyes...

No.

Not eyes.

Holes.

Two endless voids, glowing faintly red at the edges like the dying embers of a star. Beneath those, what might’ve once been a mouth was lined with sharp fragments of bone that moved when it ”spoke.”

Even if no sound came.

The aura alone made the pavement beneath Lux’s demon-leather shoes crack slightly.

”... Lord Zehar,” Lux said slowly.

He adjusted his cuffs. Straightened his spine. Rolled his neck once.

And smiled like the lobbyist prince he was born to be.

”Welcome to Beberly Hills.”

The creature did not speak.

Its shadow moved, though. It slithered across the fence, over the sidewalk, and pressed against the mansion’s perimeter barrier like black ink testing glass.

Lux glanced at Lullaby.

She didn’t speak either.

Her face had gone slack, not in fear, but in full processing mode. Sloth-style.

The kind where one wrong word would take thirty years to explain.

Lux inhaled once, cool and slow. Then walked forward a single step.

”You made quite the trip,” he said aloud, voice velvet-smooth, rich with power. ”But I can’t help but wonder... what does an Abyss Overlord want with me?”

The creature didn’t respond with words.

Instead, a long fissure of soundless static split the space beside it. A flicker of ancient binding sigils, and then... an infernal scroll unfurled.

Not a contract.

A summons.

Signed in blood that boiled the moment Lux looked at it.

[System Alert: Summons Identified. Class: Eternal Debt Resealment Claim. Source: Abyssal Vaults. Date Signed: ERROR. Date Modified: ERROR. Subject: Zoltarin Vaelthorn. Lineage Clause Binding Activated.]

Lux’s mouth went dry.

It wasn’t a bounty.

It wasn’t a threat.

It was a balance sheet.

And he was on it.

”...You’ve got to be kidding,” Lux muttered.

Corvus suddenly reappeared behind them with a loud flap. ”OHHH yeah. That’s the real thing. That’s the kind of relic that gives your soul a credit score.”

Lux didn’t blink.

He stepped forward.

Only a little.

Then bowed, subtly. Not as a lesser.

But as a Vaelthorn.

As a CFO of Hell.

”I see you’ve come to collect on the debt of my dead uncle.”