The bathing pool's magical waters had long gone still, but the heat lingering in Lirien's body had nothing to do with the temperature. She sat between Valthorax's powerful thighs, her back against his broad obsidian chest, his thick cock still buried deep inside her as the last pulses of his release filled her completely. Every slow breath he took pressed him deeper, drawing tiny, involuntary whimpers from her lips.
The new spark inside her — that faint golden thread of power — flickered like a candle in the wind. It felt strange. Foreign. Yet undeniably hers now, woven into the binding that chained her soul to the Demon Lord.
Valthorax's large clawed hand rested possessively over her lower belly, right where the heat of his seed pooled. "You feel it, don't you?" he murmured against her ear, voice low and satisfied. "The first fragment of my essence awakening within you. Soon you will command shadows as I do… if you earn it through proper submission."
Lirien swallowed hard, trying to ignore how full she still felt, how her inner walls continued to flutter greedily around his girth. "I didn't ask for any of this," she whispered, her voice hoarse from moaning.
"No," he agreed, nipping the sensitive spot where her neck met her shoulder. "But you will learn to crave it. Stand up, little slave. Let me see what belongs to me."
With gentle but firm hands, he helped her rise on shaky legs. Warm water and their combined fluids cascaded down her thighs as his cock slipped free with a wet sound that made her cheeks burn with embarrassment. She stood naked before him in the shallow end of the pool, the floating crimson orbs casting soft light over her flushed skin, full breasts, and the slick mess between her legs.
Valthorax remained seated on the submerged marble ledge, his massive frame relaxed yet commanding. His crimson eyes raked over her slowly, drinking in every detail. His own cock, still hard and glistening, rested heavy against his abdomen.
"Beautiful," he said simply. "Turn around. Bend over and spread yourself for your Master. Show me how well-used that tight cunt looks after being claimed three times in one night."
Lirien's defiance flared even as fresh arousal slickened her folds. "You're disgusting."
"Defiant words from a woman whose pussy is dripping for more," he countered with a dark smile. "Obey, Lirien. Or I will bend you over myself and make the lesson far more… memorable."
Heart pounding, she turned slowly. Bracing her hands on the edge of the pool, she bent at the waist and reached back with trembling fingers, parting her swollen, puffy folds to expose her well-fucked entrance. The cool air kissed her overheated flesh, making her clit throb visibly.
Valthorax growled in approval. "Such a pretty, greedy hole. Still clenching as if it misses being stuffed full." He stood, water sluicing off his muscular body, and stepped behind her. One thick finger traced her slit, gathering their mixed fluids before pushing back inside her. "You will learn to present yourself like this every morning. A proper slave greets her Lord with her body offered and ready."
He added a second finger, scissoring gently then roughly, stretching her again. Lirien moaned despite herself, hips pushing back against his hand. The new spark of power inside her seemed to respond to the pleasure, growing slightly brighter.
Suddenly, Valthorax withdrew his fingers and replaced them with the blunt head of his cock. In one smooth thrust, he buried himself to the hilt, forcing a sharp cry from her throat.
"Fuck— Master!" The word slipped out before she could stop it.
He paused, buried deep, and chuckled darkly. "There it is. The first time you called me Master while I'm inside you." His hips drew back slowly, then slammed forward hard, setting a punishing rhythm. "Say it again."
Each powerful thrust drove her forward, her breasts swaying heavily, water splashing wildly around them. "M-Master…" she gasped, the word breaking into a moan as he angled to hit that perfect spot inside her relentlessly.
"Good girl," he praised, one hand tangling in her long dark hair while the other gripped her hip hard enough to bruise. "Take your Lord's cock like the eternal slave you were born to be. Feel how perfectly you stretch around me."
The pleasure built fast and overwhelming. Lirien's legs trembled, her walls fluttering wildly. The golden spark inside her flared brighter with every deep stroke, feeding on the ecstasy.
Valthorax leaned over her, his chest against her back, horns framing her head as he growled into her ear. "Come for me. Squeeze my cock and give me more of your power."
She shattered with a broken scream, orgasm ripping through her like wildfire. Her pussy clamped down rhythmically around his thick length, milking him greedily. Golden light visibly flowed from her into him, strengthening the ancient runes etched across his skin.
With a guttural roar, Valthorax thrust deep one final time and came hard, flooding her once again with thick, magical seed. The rush pushed her into a second, smaller climax that left her gasping and limp against the pool's edge.
He held her close as they both came down, his cock still twitching inside her, arms wrapped around her waist in a surprisingly protective hold.
When he finally pulled out, he turned her gently to face him. His clawed fingers tilted her chin up so their eyes met. "You are progressing faster than I expected, Lirien Voss. The bond is pleased."
She glared up at him, chest heaving, even as aftershocks made her thighs quiver. "This doesn't make me yours."
A slow, dangerous smile curved his lips, revealing sharp fangs. "It already has."
He lifted her from the pool with effortless strength, drying her with a wave of shadow that left her skin warm and clean. A new garment materialized around her — a delicate black silk dress that hugged her curves, with strategic slits and sheer panels that left little to the imagination. Thin golden chains adorned her wrists and ankles, decorative yet symbolic of her bound status.
"Come," Valthorax said, taking her hand in his much larger one. "I will show you the citadel. You should know the domain where you will spend eternity serving your Demon Lord… and where you will learn to wield the power I gift you through your body."
As they walked through the grand halls, lesser demons bowed low, stealing curious glances at the human woman at their Lord's side. Lirien felt the weight of their stares, the sheer otherworldly scale of the citadel, and the constant, throbbing reminder between her legs of how thoroughly she had been claimed.
The golden spark inside her pulsed stronger now, responding to Valthorax's nearness like a living flame.
She hated how right it felt.
And she feared how much she might come to need it.Welcome to "Bound as the Demon Lord's Eternal Slave (R18)"!
This dark fantasy story explores the intense master-slave bond between Demon Lord Valthorax and Lirien Voss through heavy dominance, detailed smut, slow corruption, and dual cultivation. Expect explicit scenes, power imbalance, and emotional depth across 450+ chapters.
Warnings: 18+ only. Starts forced, shifts to enthusiastic consent. No harem, no extreme non-con after Ch.1.
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