Harem Startup : The Demon Billionaire is on Vacation

Chapter 373 – You Have My Word

Lullaby didn’t answer at first.

Then she closed her eyes. Her voice took on a distant quality, like she wasn’t just talking to them—but to the dreamworld itself.

”Anchor is not chains,” she murmured. ”It’s a memory with weight. A name that doesn’t float away. An echo that says ’You are not alone.’”

Lux fell silent.

Even Sira blinked, letting the poetry sink in.

”If you give her a reason to hold on,” Lullaby continued, ”even if it’s just a whispered promise... she’ll walk out of this nightmare herself.”

Lux stared at Ariel’s face again.

Still sleeping.

Still fragile.

But something in her brow had relaxed. The way her lips parted. The lack of tension in her fingers.

He exhaled. ”Alright. Then let’s give her that reason.”

Lullaby smiled. ”Good. Now say something only she would know. A truth. A promise.”

”What?”

”Doesn’t have to be grand. Just real.”

Lux hesitated. Then he sat down beside the bed, his hand reaching gently—not touching her, but close enough to feel the warmth of her skin.

He looked at her face, at her bruises that weren’t on the skin but somewhere deeper.

”I won’t let them hurt you again,” he said finally. ”You have my word.”

The dream shimmered.

Lullaby’s breath caught.

That was enough.

The tether was made.

The anchor sank.

The storm stilled.

Ariel’s fingers twitched, curling toward Lux’s voice like she’d just caught the thread of it and didn’t want to let go.

And deep in her sleep, her heartbeat calmed.

More shimmer danced around the room.

Lullaby slowly leaned back, cheeks flushed slightly, like the spell cost more than she’d admit.

”That’ll hold,” she whispered. ”At least... for now.”

Her voice was soft. Barely audible. But there was a hum underneath it—a faint vibration that clung to the air like the echo of a lullaby not yet finished. Fitting, really. She looked like sleep itself right now. Tousled hair, delicate breath, cheeks pink with exertion and pride. A demon bunny, if there ever was one. Soft. Sweet.

But still a demon.

Still a child of Sloth.

The kind that could sing a city to sleep, kiss your forehead, then quietly stitch your soul into a never-ending dream.

Lux looked down at her and gave a small nod. ”You did good, Lullaby.”

Lullaby’s head turned slightly. Her big, moonlit eyes lit up at his praise like someone had just handed her the last slice of cake. Her lips curled into a small smile, and then—

She opened her arms.

Didn’t say anything.

Didn’t need to.

She just... looked up at him. Smiling.

Expectantly.

Like a sleepy kitten asking to be carried to bed.

Lux didn’t sigh. Didn’t protest.

Because he knew.

This wasn’t just affection.

It was Sloth affection. The rare, clingy, post-spell fatigue kind. And if there was one rule among demons you didn’t mess with, it was ’When Sloth opens their arms after burning mana for you... you carry them.’

So he bent down.

Hooked one arm under her legs, the other under her back.

And lifted.

Lullaby melted into his chest like a warm marshmallow. Soft, light, weightless. Her arms loosely draped around his neck. Her head nuzzled just under his jaw, her breath tickling the skin like gentle dream-whispers.

He adjusted his hold slightly.

”Shall I bring you to your room?”

”Mmhm,” she murmured. ”Yes please.”

Lux could already feel her energy dimming—fading like a candle under water.

And then... yeah.

Just like that.

She fell asleep.

Lux raised a brow, glancing down at the drooling Sloth-daughter now fully passed out in his arms. Out cold. Chest rising and falling slowly, dreamdust still clinging to her lashes. She even had the faintest little smile on her face.

From behind him, Sira cringed.

”Oh dear,” she drawled. ”Is she sleeping already?”

Lux didn’t even flinch. ”She is what she is.”

”She’s such a... plush toy.” Sira folded her arms, watching the girl snooze against his collarbone. ”Doesn’t even try to seduce. She just exists.”

Lux smirked. ”Don’t be jealous. She’s not trying to steal your throne, Princess.”

Sira scoffed and flipped her hair dramatically. ”Please. I don’t get jealous. I get even.”

”Mmhmm.” Lux adjusted Lullaby slightly so her weight rested comfortably. ”I’ll take her to her room.”

”Where is her room?” Sira asked casually, though her tone was sharp like wine on cracked lips.

”Next to yours,” Lux replied. ”She clings to you too, remember?”

That earned him a skeptical squint.

”She’s soft,” Lux added, stepping toward the hallway. ”Just... don’t pick on her too much.”

Sira raised a perfectly arched brow. ”Her? Darling, I have you. If I’m bored, I’ll go to your room, suck your cock, and leave you hard. Just to watch you touch yourself after I leave.”

Lux stopped mid-step.

Lullaby let out a tiny sigh in her sleep.

And Lux... smirked.

Didn’t look back. Just spoke over his shoulder like it was a casual business meeting.

”Ah. Believe me,” he said smoothly. ”You won’t like the scene when you see me enjoying myself.”

Sira paused.

Then clicked her tongue with a frown.

Because yeah.

She could imagine it.

Lux, on his bed. One hand down. His eyes half-lidded, mouth open in a low groan. His incubus energy spiked in waves.

She hated it.

And loved it.

And absolutely hated how much she loved it.

So yeah.

Double-edged sword.

She scoffed and looked away. ”Ugh. You’re a menace.”

”Flattered.”

Then, with a single breath, Lux activated his teleportation skills. His skin shimmered faintly, reality folding around him like silk.

Blink.

He was gone.

The hall outside Lullaby’s bedroom was quiet.

Just the soft hum of runes in the walls, glowing faintly in the dark. His mansion was built to absorb noise, to cradle those who rested.

The door to her room opened with a whisper.

Inside, everything smelled like lavender, chamomile, and worn books. A small plush collection lined the window seat—most of them sleepy-eyed, one of them suspiciously chewing on a pillow. The bed was enormous for someone her size, swathed in blue sheets and star-dotted quilts.

Lux stepped in.

Crossed the plush carpet with slow, careful steps.

And laid her down.

She clung for a second. Reflexive. Her arms didn’t want to let go.

He waited.

Watched her expression.

Then gently coaxed her down with a little hum.

Lullaby let go.

Still smiling in her sleep.

Still dreaming.

Lux adjusted the blankets. Tucked them in around her.

Then brushed a bit of hair from her forehead. ”Sleep well.”

As he stood to leave, she murmured something.

So soft.

Barely audible.

”...Lux...”

He paused.

Turned.

Her lips parted slightly.

”...mine...”

His brows lifted.

Then he smiled.

”...sure,” he whispered. ”Let’s put it on a credit line.”

Then he left.