Harem Startup : The Demon Billionaire is on Vacation

Chapter 400 – Higher Tolerance for Getting Wrecked

[Correction. The activity last night was less ’sex’ and more ’dragon-induced endurance trial.’ This increase reflects survivability rather than new skill acquisition.]

Lux snorted, rubbing at the faint claw mark still healing across his ribs. ”Yeah, yeah. Translation: no new skills. Just stronger bones and higher tolerance for getting wrecked.”

[Accurate.]

Lux huffed a laugh, shaking his head. ”Sometimes I think you enjoy insulting me.”

[Sir, I do not enjoy. I merely observe. The fact that my observations resemble insults is... incidental.]

Lux was still grinning when Lyra entered the kitchen, silent on her soft shoes, balancing a silver tray. The faint aroma of roasted beans hit him before she set it down in front of him. His body almost sagged in relief at the smell alone.

”Your coffee, my lord,” Lyra said carefully, though her eyes flicked again to the bite marks and scratches that still marred his chest.

Lux reached for the cup, inhaling the steam like it was holy salvation. ”Perfect timing, Lyra. You might’ve just saved the incubus economy this morning.”

She hesitated. ”Should I... summon a healer?”

Lux waved her off with his free hand, already taking a long, scalding sip. The burn on his tongue made him groan low in his throat—different from last night, but no less satisfying. ”No healer. Just coffee. Regeneration’s handling the rest.” 𝒻𝘳ℯℯ𝑤ℯ𝒷𝘯ℴ𝓋ℯ𝘭.𝑐ℴ𝑚

He leaned back in his chair, savoring the bitter aftertaste, eyes closing briefly. His system flicked another dry line into his head.

[Observation: Excessive vocal groaning while consuming coffee is unbecoming of your station, sir.]

Lux cracked one eye open, lips quirking. ”Unbecoming? Please. I moaned louder last night and somehow came out richer for it.”

Lyra flushed faintly but said nothing, setting a plate of bread and fruit near him. Lux caught the look on her face, half-frozen composure, half curiosity she’d never dare voice. He smirked knowingly, stretching one wing lazily just to make her twitch.

”Relax, Lyra. No dragon claws waiting under the table. At least not right now.”

She stiffened, murmured something about preparing the dining room, and excused herself with all the speed of a woman who’d just seen too much.

Alone again, Lux sipped his coffee, his grin fading into something more thoughtful. Level 275. Stronger. Tougher. And Mira... now bound to him by contract.

He could still feel her presence, faint but heavy, like a vault door locked around his chest.

He muttered into his cup, voice dark and amused. ”I really need to stop letting women bankrupt me.”

[Impossible. You are, after all, an incubus. Being bankrupted is both your curse and your business model.]

Lux laughed, shaking his head. ”Touché.”

And then he took another long sip of coffee, savoring the warmth as if it were armor against the chaos he knew was only just beginning.

He leaned back in the chair, wings twitching lazily, cup balanced in his hand. The quiet of the mansion at six a.m. almost felt like a gift. Just him, caffeine, and the faint hum of the system in his head.

”Okay...” he muttered to himself, tapping the rim of his cup. ”What should I do today...”

He flicked his fingers, and dark light rippled through the air. A cascade of holographic screens bloomed above the table—charts, numbers, maps of infernal territories. The scent of brimstone and parchment filled his nose for a second, like he’d dragged half of Hell’s finance department into his kitchen.

Lux blinked at the scrolling reports. Then he froze.

”Yup.” His voice was flat. ”Habits.”

Because of course. First thing in the morning, still half wrecked from dragon sex, and what did he do? Check the Infernal Realm’s balance sheets.

His red eyes tracked the glowing data: trade deficits in the Seventh Circle, war budget overspending in the Third, some idiot Warlord demanding more soul credits.

He dragged a hand down his face. ”I need therapy. Or... more coffee.”

[Sir is correct on both counts.]

Lux groaned. ”Not helping.”

[Not intended to.]

He sipped again, letting the caffeine burn a hole into his nerves, before asking, ”Alright. Do you know anything—or any idea I might forget today?”

The system didn’t miss a beat.

[There is the matter of today’s possible meeting with the Avariel. Tentative. Dependent on Rava’s arrangements and the willingness of the Avariel. Probability of secrecy and delay: 87%.]

Lux grunted, swirling his cup. ”Right. Fish aristocrats. Secretive, dramatic, allergic to punctuality. Got it.”

[Also, you promised the goddesses you would invite them to your housewarming party. Celestial Realm edition.]

Lux choked on his coffee. ”What.” He coughed, slamming the cup down on the table. ”Oh fuck—that. Right.”

He pressed his fingers to his temple, laughing dryly. ”Of course. A demon prince throwing a party for celestials in his mortal-renovated mansion. That won’t look like a trap at all.”

[To be fair, sir, it does sound like a trap.]

Lux tilted his head back, groaning at the ceiling. ”If you start giving me moral warnings now, I’ll uninstall you.”

[Impossible. I am bound to your soul. Also, your taste in décor is questionable for celestial creatures.]

Lux lowered his gaze slowly, eyes narrowing. ”...Did you just insult my furniture?”

[Yes.]

He barked out a laugh, shaking his head. ”You know, most demons get systems that tell them how to conquer worlds. I get one that critiques my interior design.”

He leaned back again, wings shifting, thinking through the reminders. Avariel. Rava’s connections. The Celestial goddesses expecting him to host them like some kind of demon hospitality CEO. And on top of that, a dragon upstairs who had nearly ripped his wings off.

His grin returned, sharp and crooked. ”Yeah. Today’s going to be fun.”

[Unfortunately, yes. Even in ruin, you are marketable.]

Lux raised his cup again in a mock toast. ”To being a hot mess.” He drank deep, then slammed the empty cup down like a deal sealed.

And in that quiet, with caffeine warming his chest and chaos waiting at his doorstep, Lux Vaelthorn—Incubus, CFO of Hell, son of Greed and Lust—grinned like a man who knew he was already in over his head.

But wasn’t that exactly where he thrived?