Harem Startup : The Demon Billionaire is on Vacation

Chapter 73 – Sun and Moon

The divine instrument shimmered faintly, pulsing in rhythm with the heated scene it displayed. Every touch, every gasp, every sinful movement played across its surface in vivid detail.

And Solara watched.

Frozen.

Silently breathless.

Her cheeks burned in radiant pink, flushed with something that was not embarrassment—but not quite jealousy either.

Envy.

That quiet, dangerous thing.

Her heart pricked sharply with each deep thrust she witnessed, with every whispered word Lux breathed into Rava’s ear, with every raw sound that spilled from both their lips.

Solara bit her lower lip, nails digging gently into her palm as she tried—unsuccessfully—to look away.

She had seen Lux flirt before. Many times.

Playful, calculated, professional.

Deals laced with honeyed words, soft touches carefully measured to charm saints and demons alike.

All for business.

All for diplomacy.

But this?

This was different.

Lux wasn’t playing his usual role.

Not the composed, deadpan, suit-wearing demon who negotiated infernal trade routes while sipping coffee.

Not the devil who toyed with goddesses like her and her sister during formal diplomatic sessions.

Here, he was... free.

A real incubus.

A real man.

Unrestrained. Wild. Hungry.

And worse — his affection for Rava was genuine.

’That part,’ she thought, chest tightening, ’that’s what hurts the most.’

Because she had been the recipient of his attention too.

She had tasted his charm, his teasing, his flirtation during council meetings and late-night realm negotiations that stretched until stars surrendered to sunrise.

But never once had his gaze burned like it did for Rava.

Never once had she felt him lose himself like this.

She shifted her weight, crossing her arms, unable to fully exhale the tightness blooming in her chest.

The sound of soft footsteps echoed behind her.

”Back already?” Solara asked softly, her eyes still fixed on the mirror’s shimmering surface.

Selena — the moonlit twin — stepped into the chamber, draped in silvery silk that rippled like night-tide. The cool air wrapped around her like shadows made tangible.

Selena’s sharp eyes immediately locked onto the mirror.

”...What are you watching?” she asked, tilting her head with a sly grin. ”Another one of your diplomatic reports?”

Solara’s jaw twitched.

”No.”

Selena’s gaze narrowed, taking a step closer. The mirror’s images danced before them — Lux driving deep into Rava, her moans echoing like music trapped in liquid light.

Selena blinked, and her lips parted in surprise.

”Wait—” she whispered. ”Is that—?”

”Yes,” Solara answered, almost whispering.

”Lux.”

Selena breathed it like a forbidden word. ”That’s Lux.”

The silence pulsed thick between them.

Selena’s eyes narrowed as she watched the scene unfold in the glowing mirror — Lux’s body moving above Rava’s, powerful, hungry, lost entirely in the rhythm of pleasure. His breathless growls, Rava’s desperate cries, the way their bodies tangled and clung like gravity itself was holding them together.

Selena blinked hard, her cheeks flushing as her breath caught in her throat.

But then — her eyes darted wider, realization cutting through her daze.

”Wait—” she whispered sharply, almost panicked. ”This isn’t the Underworld. This... this is not Hell.”

Solara’s lips pressed into a thin line. ”No.” Her voice came quieter now. ”It’s not.”

Selena’s brows furrowed as her mind caught up, gaze darting again to the mirror’s borders — the mortal skyline outside the hotel window, the soft electric lights of Earth’s realm.

”Is he—he’s in the mortal realm?” she asked, stunned. ”He crossed over?”

Solara nodded once. ”Yes. Mortal world.”

”But... why?” Selena whispered, barely able to comprehend it. ”What is he doing there?”

”Vacation.” Solara’s voice was steady. But brittle.

Selena’s mouth parted in disbelief. She stood there, motionless, as the mirror continued playing out every intimate thrust, every sharp gasp, Lux burying himself into Rava like a man starved for centuries.

”I see. He indeed needs that. And...” Selena finally whispered, voice breaking through the heavy air, ”he’s certainly... enjoying his vacation.”

Solara closed her eyes briefly, trying to steady the ache climbing in her chest. The pressure wouldn’t leave.

Selena glanced sideways at her sister, watching how the soft blush bloomed high across Solara’s usually steady cheeks. Her eyes narrowed gently, her voice dropping to a low, knowing whisper.

”You envy her.”

Solara’s head jerked up at that. A quick, defensive spark of divine light flashed around her.

”I do not.” The denial cracked as soon as it left her lips.

Selena said nothing. She simply stepped closer, standing beside her twin before the glowing mirror. The image reflected in both their eyes. Lux gripping Rava’s waist, pulling her in again, his mouth hungry against her skin as Rava writhed and moaned beneath him in total surrender.

”She has him,” Selena whispered again, this time softer. The words stung more now. ”Not just his body, sister... but him. His heart. His freedom. You see it too.”

Solara’s throat tightened, breath shallow as her chest ached.

”She’s not just a partner to him,” Selena continued, voice like velvet, dark with bittersweet understanding. ”She’s seeing a part of him neither of us were allowed to touch. Not the diplomat. Not the CFO. Not the cold strategist. But him—the man beneath it all. The one he always kept hidden from us.”

The mirror shifted again as Lux kissed Rava deeply, pulling her body flush against him, their sweat-slicked skin gleaming under the dim hotel light. Every move was unrestrained. Wild. Lux was fully untethered.

Solara exhaled sharply, fingers trembling despite herself.

Selena’s voice softened even more, almost like it pained her to say it. ”You’ve always cared for him, haven’t you?”

Solara bit her lip, holding back the lump in her throat.

”I admire him,” she whispered quickly, too quickly, as though if she said it fast enough, it wouldn’t hurt. ”For his strength. For his work. For how hard he fights.”

Selena smiled faintly. But it was a sad smile.

”Liar.”

The word wasn’t cruel. It was kind. Honest.

Solara clenched her jaw, light flickering unsteadily around her as she whispered, ”He never looked at me like that. Not once. Not like he looks at her.”

Her voice cracked at the end.

Selena’s expression softened, pain flickering behind her moonlit eyes. She understood more than anyone.

”Because we’ve always been part of the chains that bind him,” Selena whispered. ”The politics. The contracts. The duties. The responsibilities.”

Solara swallowed hard, blinking rapidly as Lux’s deep groans filled the chamber again, echoing through the mirror while Rava’s moans rose in tandem.

Selena’s voice darkened, low and steady.

”With her... he’s not bound. With her, he’s free.”

They stood together in silence again, watching Lux finally lose himself completely as he emptied inside Rava, his growl raw and unguarded as Rava clung to him like an anchor in a storm.

Both goddesses shifted uncomfortably, heat swirling low in their bellies at the rawness of it, at the intimacy neither of them had ever touched with him.

Selena exhaled a shaky breath. ”You know...” she whispered softly, her gaze still locked to the mirror, ”I envy her too.”

Solara’s eyes flicked sideways, surprised.

”You...?”

Selena gave a small, broken smile—her usual composure thinning.

”You’re not the only one he charmed with his cold smiles and sharp words.” Her voice wavered faintly. ”You spoke to him more. But every time I saw him—every time—I wondered what it would feel like to be the one who made him lose control.”

Solara’s breath caught, her chest tightening again.

”I always assumed it was impossible,” Selena continued, almost whispering now. ”That we would never see this side of him. That he would always hide it beneath contracts and systems and calculations.”

She stared back into the mirror, at Lux’s flushed, sweat-slicked body still tangled with Rava, at the way his arms wrapped around her possessively, his lips pressed to her throat like a man who needed to be there.

”And now...” Selena whispered, her voice breaking slightly. ”Now we see what he could’ve been with us... If things had been different.”

Solara’s shoulders sagged under the weight of those words.

Her divine light dimmed faintly.

Her lips trembled.

”For so long,” she whispered, ”I kept convincing myself that maybe one day... maybe after this treaty... or after that negotiation... after the politics were stable... that he might finally turn to me. But I was never...” her voice broke again, ”I was never freedom for him.”

Selena reached over, gently taking her sister’s hand.

For the first time, the two goddesses stood not as councilors or rulers, but as two women aching quietly for the same man.

”It’s not too late,” Selena said softly. ”But maybe... We’ll have to fight for him one day.”

Solara smiled faintly through the ache. ”Maybe.”

Their hands remained clasped as they continued to watch him—the demon neither of them could stop wanting, nor ever fully have.

At least not yet. But will...