Harem Startup : The Demon Billionaire is on Vacation

Chapter 774 – Lust Sin Full Activation

Lux stared at them quietly.

This was the first time he hadn’t tried to suppress them.

The first time he hadn’t hidden them.

The first time he had actually... used them.

Last night he hadn’t been Greed.

He hadn’t been calculating.

He hadn’t been strategic.

He had been...

Mindless.

Instinct-driven.

Uncontrolled.

The memory made his stomach tighten slightly.

Because that wasn’t how Lux operated.

As Greed, he lived by logic.

He negotiated.

Calculated.

Simulated outcomes before acting.

Lust... had none of that.

Lust moved first.

Thought later.

It was hunger.

Instinct.

A sin that didn’t ask permission from reason.

Lux exhaled slowly.

”...That was terrifying.”

”Are you disgusted with yourself?”

The voice came softly from behind him.

Lux turned.

Lullaby stood there.

Barefoot.

Hair slightly messy.

Dragging a sheet behind her like a tiny ghost who had stolen the bed.

She yawned.

Slow.

Sleepy.

Then shuffled closer to him.

Lux shook his head.

”No.”

His voice was honest.

”It’s just...”

He glanced back at the mirror.

”I took the Greed instinct more than Lust my entire life.”

His fingers traced one of the new sigils.

”Then I let it loose last night.”

A pause.

”It was more than the feral state I ever experienced.”

His eyes narrowed slightly.

”It was... weird.”

Lullaby stepped closer.

She was shorter than him by a noticeable margin.

Lux had to look down slightly when she approached.

She reached up.

Her small hand pressed gently against the Lust sigil on his chest.

Warm.

Soft.

”And?” she asked.

Her voice was still half sleepy.

”You’re afraid?”

Lux considered that.

Then shook his head again.

”It’s more curiosity than fear.”

He leaned slightly against the dresser. ”Since I was born, I only had one form.” He tapped the emerald sigil. ”Greed Incarnate.”

His gaze lowered to the pink markings.

”So I wonder...”

His voice softened slightly.

”What I am when I take that Lust form.”

Lullaby stared at him for a moment.

Then she did something very Lullaby.

She stepped closer.

Very close.

Close enough that Lux had to lean back slightly to keep from bumping into her.

She placed both hands on his chest.

Then gently rested her forehead against him.

Which looked slightly ridiculous.

Because she was shorter.

So it was more like a small sleepy demon leaning against a tall one.

Her voice was soft.

”You’re still Lux.”

Lux blinked.

”That’s it?”

”Yes.”

She rubbed her cheek lightly against his chest.

”You were still protecting everyone.”

He frowned slightly.

”I was?”

”Yes.”

Her finger traced the edge of a Lust sigil. ”You didn’t hurt anyone. You stopped when someone was tired. You checked everyone. You gave stamina potions.” Her eyes lifted to meet his. ”That’s not a monster.”

Lux stared at her.

She continued calmly. ”You let your instinct move. But your heart stayed the same.” Her hand tapped his chest lightly. ”That’s the important part.”

Lux exhaled slowly.

He hadn’t realized he’d been holding tension in his shoulders until that moment.

Lullaby yawned again.

Then leaned more of her weight against him.

”Besides,” she murmured. ”You looked happy.”

Lux snorted faintly. ”I looked insane.”

”That too.”

A pause.

Then she smiled faintly.

”But it suits you.”

Lux exhaled through his nose.

”Thanks.”

He meant it.

It still felt strange hearing reassurance about something he had spent two centuries suppressing, but Lullaby’s words had done what they usually did, settled the storm just enough for logic to return.

Behind him, the bed shifted.

A quiet rustle of sheets.

Sira sat up slowly, stretching like a lazy cat waking from a sun-drenched nap. Her horns tilted slightly as she pushed her hair away from her face, eyes still half-lidded with sleep.

”But it did something, right?” she murmured.

Lux turned.

She looked exactly like someone who had survived a night of supernatural chaos and considered it a successful workout.

Lux rubbed his chin.

”Yeah... probably.”

Then he straightened.

”Wait.”

His eyes sharpened.

”System.”

The air in front of him flickered faintly.

Lux folded his arms.

”Full analysis of what I gained last night.”

A beat.

”Use brackets.”

The system responded immediately.

[System Analysis Initiated]

Lux waited like a CFO reviewing a quarterly earnings report.

The interface expanded in front of him.

Lines of data appeared one by one.

[Event Summary: Lust Sin Full Activation]

[Status: First Complete Activation in User Lifetime]

Lux winced slightly.

The system continued.

[Synergy Achieved: Greed Sin + Lust Sin]

[Result: Sin Resonance]

A larger window appeared.

[New Status Layer Unlocked]

[Lust Activation Meter: Initialized]

Lux frowned.

”Wait.”

He lifted a finger toward the floating panel.

”Wait wait wait.”

He pointed directly at the line.

”What is this Lust Activation thing?”

Sira leaned against the headboard, watching curiously.

The system responded.

[Explanation: Lust Activation Meter represents the percentage of your Lust Sin currently engaged.]

Lux stared.

”...That thing wasn’t there before.”

[Correct.]

Lux narrowed his eyes.

”Why?”

The system paused for half a second, as if deciding how much sarcasm was appropriate.

[Because previously your Lust Sin was functionally dormant.]

Lux grimaced.

The system continued.

[Your operational focus has historically been: Greed.]

Lux waved a hand dismissively.

”Well obviously.”

[Additional clarification:]

More text appeared.

[For approximately two centuries you have primarily discussed:]

[Money]

[Assets]

[Investment portfolios]

[Cross-realm trade logistics]

[Debt restructuring]

[Infernal bond markets]

[Tax evasion strategies]

Lux blinked.

”That’s called being responsible.”

[You also attempted to negotiate interest rates during a Lust House gala.]

Sira snorted quietly behind him.

Lux pointed at the interface.

”That was networking.”

[You described seduction as ”strategic charisma deployment.”]

Lux cringed.

”...That is technically accurate.”

The system continued mercilessly.

[You frequently express confusion regarding Lust behavior.]

Lux folded his arms defensively.

”They are irrational.”

[They are Lust demons.]

Lux inhaled slowly.

The system finished its statement.

[In conclusion. You have historically concentrated almost exclusively on Greed Sin development.]

Lux sighed.

”...Okay fine.”

He rubbed his face.

”But what changed?”

The system displayed a new block of data.

[Lust Activation Event: Last Night]

[Trigger Factors: Emotional release. Sin suppression break. Multi-partner resonance. Ancestral incubus bloodline activation. Sustained Lust output]

Lux glanced sideways.

”...Multi-partner resonance?”

[Yes.]

”Continue.”