Harem Startup : The Demon Billionaire is on Vacation

Chapter 775 – Lust Activation Meter

The system complied.

[Peak Lust Activation Achieved:]

[Lust Sin: 100%]

Sira whistled softly.

Lux frowned harder.

"Great."

The system scrolled further.

[Current Lust Activation Level: 43%]

Lux blinked.

"...It’s still active?"

[Correct.]

"Why?"

[Because you are still in proximity to six compatible partners.]

Lux sighed.

"...Of course."

The system continued the analysis.

[Permanent Effects Acquired:]

[Lust Sigil Integration]

Lux glanced down at his chest.

Makes sense.

[Sin Synergy Stabilization]

[Greed + Lust Compatibility Increased]

Lux’s CFO brain immediately engaged.

"Meaning my Greed abilities scale with Lust output?"

[Correct.]

Lux nodded slowly. "That’s... extremely profitable."

Sira chuckled from the bed.

The system continued.

[Ancestral Incubus Domain Reactivation]

Lux rubbed his forehead.

"Yeah, Corvus mentioned that."

The system added another section.

[New Skills Acquired: Abyssal Court of Desire and Velvet Marionette Dominion]

Lux tapped his chin thoughtfully. "That’s terrifying."

Sira stretched lazily. "And useful."

Lux glanced at the interface again.

"But this Lust Activation meter..."

He pointed at the number.

"That fluctuates?"

[Yes.]

Lux’s brain kicked into analysis mode.

"So if it rises... my Lust abilities scale?"

[Correct.]

"And if it drops?"

[Greed dominance increases.]

Lux nodded slowly.

"Dynamic sin equilibrium."

The system confirmed.

[Correct.]

Lux leaned against the dresser again.

"...That actually makes sense."

Then he squinted at the interface.

"Wait."

Another line caught his eye.

"What’s this?"

The system highlighted the final entry.

[Warning: Sin Balance Recommended]

Lux read it out loud. "’Excessive Greed suppression of Lust causes stagnation.’"

He looked up.

"...You’re lecturing me."

[Correct.]

Lux groaned.

"Okay, you don’t need to attack me."

The system replied calmly.

[This is not an attack.]

A beat.

[This is constructive feedback.]

Sira laughed quietly behind him.

Lux sighed.

He took a breath.

Then another.

"...Fine."

"So..." A voice said. A pause. "...does that mean we need to do more of this later?"

Lux turned.

Naomi slowly opened her eyes and looked at him from the bed, hair spread across the pillow like a halo of chaos.

Lux blinked once. "You look okay."

Naomi squinted at him. "You want me to pass out?"

Lux raised both hands defensively. "No—no, it’s just..." He gestured vaguely at her. "You look more than fine."

Naomi stretched slightly, testing her arms and shoulders.

Her body didn’t tremble.

Her breathing was steady.

She looked... energetic.

Suspiciously energetic.

Sira noticed it too.

The Pride demon leaned against the pillows, watching Naomi with narrowed eyes.

"More energetic," Sira said lazily.

Lux turned toward her.

She smirked.

"Because now your sex brings more benefits."

Lux choked slightly.

Sira waved a hand casually. "Like a royal incubus should."

Naomi tilted her head toward Lux. "...You never mentioned that feature."

Lux pointed at the system interface still floating in front of him. "I just unlocked it."

Sira hummed. "Convenient timing."

Naomi looked thoughtful. "So... we’re basically training partners now?"

Lux rubbed his face again. "I would not phrase it like that."

Another voice joined.

Ely sat up slowly, pushing her hair back with graceful composure that somehow survived the aftermath of the night. Her eyes flicked between Lux, Naomi, and the glowing system window. "So we are going to do more sex?"

Lux froze.

"...You’re very direct."

Ely shrugged slightly. "I prefer clear expectations~"

Sira snorted.

Naomi laughed softly.

Lux looked at the ceiling like it might rescue him.

Another rustle of sheets.

Mira rolled over on the floor. The dragon girl blinked up at the ceiling, tail twitching lazily. "...Sounds nice."

Lux turned slowly toward her. "You just woke up... after having sex."

Mira stretched like a large predatory cat. "Yes." She yawned. "Still sounds nice."

Lux looked like he was reconsidering every life choice he had made.

Behind Mira, something moved under the blankets.

Rava emerged.

Her hair was messy, her expression calm, and one tentacle lazily reached across the bed like it was searching for breakfast.

Her eyes scanned the room.

Then stopped on the dresser.

"Oh."

She pointed.

Lux followed her gaze.

The stamina potions.

Six bottles.

Each labeled neatly.

Rava smiled faintly. "He put potions for us."

Naomi sat up slightly. "...Seriously?"

Ely leaned forward to read the labels.

Mira whistled softly. "Responsible incubus."

Sira stretched her arms above her head. "See? Greed instincts."

Lux sighed. "I was planning ahead."

Naomi looked at the potions. "I think we won’t need that." She looked at Lux directly. "So~ When’s the next training session?"

Lux smiled. "How about breakfast first? I also need to visit the Lust House."

The proposal was accepted instantly.

No arguments. No teasing. Just the quiet, shared agreement of people who had survived an absurd night and now needed food before dealing with the consequences.

The room slowly came back to life.

Sheets shifted.

Blankets slid away.

Six women stretched, rolled their shoulders, and stood up one by one.

Lux watched quietly.

They moved... well.

Too well.

Naomi stretched like someone who had just finished a relaxing spa retreat instead of an all-night infernal endurance marathon.

Sira hopped off the bed with feline grace, horns tilting slightly as she brushed hair from her face.

Ely rose with her usual elegance, Mira cracked her neck like a warrior warming up for battle, and Rava’s tentacles lazily retracted as she sat upright.

Not one of them winced.

Not one of them looked sore.

In fact...

They looked radiant.

Their skin glowed faintly with vitality. Their posture was strong. Their eyes were bright. If Lux didn’t know better, he would assume they had slept for twelve hours and done light yoga afterward.

He frowned slightly.

They looked like they could punch a dragon and win.

The stamina potions still sat on the dresser. 𝑓𝓇𝘦ℯ𝘸𝘦𝑏𝓃𝑜𝘷ℯ𝑙.𝑐𝑜𝓂

Rava had already picked one up.

Lux quickly waved his hand.

The bottles vanished.

Back into his dimensional inventory.

"Later," he said calmly.

Sira smirked but didn’t argue.

The girls dressed quickly. Nothing elaborate, just comfortable clothing for breakfast in the mansion rather than formal attire.

Soon they stepped into the dining room together.

Lyra had prepared everything.

Fresh bread.

Fruit.

Eggs.

Infernal spiced tea.

Enough food for a small army.

The group settled around the table.

For once, no one teased Lux.

They just ate.

Quiet conversation drifted across the table. Small laughs. Casual remarks about the day ahead.

Lux drank another coffee.

And by the time breakfast ended, the mansion felt... normal again.