Chapter 3: Data Collection
The world shrank to the point of contact: the wet, warm stripe of her tongue against his oversensitive skin.
Ethan jerked as if scalded, a broken sound catching in his throat. He was too spent, too boneless to move away. He could only stare down the length of his own body, breath hitching, as Lilith, with the focused intensity of a scholar examining a rare text, licked a thick, pearlescent drop from his abdomen.
Her eyelids fluttered. A low, resonant moan vibrated from her chest, a sound of pure, unadulterated discovery. It wasn’t a moan of pleasure, not exactly. It was the sound a starving person makes tasting their first bite of food.
“Salty,” she murmured, her voice husky. “Sweet, beneath the bitterness. Metallic. Alive.” Her green eyes, still lit with that faint, sulfurous glow, locked onto his. “You taste like panic. And relief. It’s… complex.”
Her pink tongue darted out again, swiping through another streak of his cooling release. This time, she gathered it deliberately on her tongue, held it in her mouth, and swallowed. Her throat worked. A shudder wracked her frame, and the glow in her eyes brightened.
“The transfer is inefficient,” she said, crawling onto the bed with a predator’s grace. The mattress dipped under her weight. “So much was lost to the air. To the fabric. Wastage cannot be tolerated.”
“Lilith…” His voice was a ragged whisper. He tried to scoot back, but his shoulders hit the wall. He was trapped between the cinderblock and the demon.
“The hypothesis is confirmed,” she continued, kneeling over his thighs. Her gaze was fixed on his softening, wilting cock, which lay sticky and spent against his stomach. “Ambient emissions are sufficient for a baseline sustenance. But for a full feed… for true saturation…” She reached out, not with her claws, but with her slender, surprisingly cool fingers. She wrapped them around him.
He gasped. It was too much, too soon after his climax. A sharp, almost painful sensitivity jolted through his nerve-endings.
“Direct contact is the optimal conduit,” she declared, beginning to stroke him with a clumsy, experimental rhythm. Her touch was all wrong—too firm, too mechanical, modeled on the frantic, visual cues from the video and not on any innate understanding of pleasure. It was like being jerked off by a beautifully programmed robot.
“Stop, it’s… it’s too sensitive,” he managed to say, pushing weakly at her wrist.
She ignored him. Her focus was absolute. “The tissue is engorged post-climax. Recovery time is variable. Can stimulus override the refractory period?” She leaned down, her fiery hair creating a curtain around their hips, and blew a soft, cool breath across the wet head of his cock.
It twitched in her hand. Against all biology, against the sheer exhausted protest of his body, a spark of raw feeling rekindled. He hated it. He wanted it.
“Fascinating,” she breathed. She lowered her head, and for a terrifying, exhilarating second, he thought she would take him into her mouth. Instead, her tongue lapped at him again, a broad, wet stroke from root to tip, cleaning him of his own mess with a thorough, obscene diligence. The combination of her clinical commentary and the filthy, intimate act made his head spin.
“You’re… you’re fucking insane,” he choked out.
“I am efficient,” she corrected, sitting up. Her lips glistened. A new, more urgent heat was radiating from her, cutting through the room’s stale chill. The academic detachment was finally, fully crumbling, eroded by the direct taste of his essence. “The data from observation is valuable. But the dataset is incomplete. We must proceed to the primary interaction.”
With that, she hooked her thumbs into the waistband of her stolen sweatpants—Ethan’s sweatpants—and shoved them down over her hips, along with the simple cotton panties she’d pilfered from his laundry basket. She kicked them off the side of the bed.
Ethan’s mind went blank.
She was bare. Perfect. Her pubic hair was a fiery thatch of copper curls. And between her thighs, her folds glistened with a slickness that had nothing to do with his own spent arousal. A sweet, musky scent, like ozone and crushed petals, filled the space between them. She was dripping wet.
“Lilith, wait…” The protest was automatic, hollow.
“You are the compatible subject,” she stated, as if it were the most obvious thing in any dimension. She placed a hand on his chest, her claws pricking lightly through his t-shirt, and swung a leg over his hips. She straddled him, her weight settling onto his thighs. Her dripping sex hovered inches above his cock, which, betrayed by every instinct, was now thickening again under the dizzying spectacle of her.
“This is the merging of essences,” she said, her glowing eyes holding his. Her voice had dropped to a throaty purr, all pretense of analysis burning away in the face of her rising need. “The stir of the mortal flame. I will catalogue everything.”
She reached down between her own legs, her fingers slipping through her slick folds with a soft, wet sound that made Ethan whimper. She grasped him, positioning the broad head of his cock at her entrance. She was scalding hot.
“Oh,” she gasped, the clinical facade cracking completely. “The… the interface.”
She sank down.
It was a slow, inexorable, breathtaking descent. Her tight, searing heat enveloped him, inch by impossible inch. She was impossibly tight, her inner muscles fluttering around him in a frantic, alien rhythm. She took him all, until her ass rested on his thighs and he was buried to the hilt inside her.
For a moment, neither moved. Ethan could only stare up at her, stunned into silence. Her head was thrown back, her neck a long, elegant line. A shuddering breath escaped her parted lips. The glow from her eyes cast flickering shadows on the ceiling.
“Full penetration achieved,” she whispered, the words trembling. “Pressure. Heat. A… a profound structural congruence.” She looked down at him, her expression one of awestruck confusion. “It feels… it feels…”
She began to move. It was an awkward, rolling motion of her hips, an attempt to replicate the mechanical pistoning she’d studied. It was clumsy. It was incredible. The drag of her silken, soaked walls along his shaft ripped a raw, guttural groan from Ethan’s chest. His hands, which had been lying limply at his sides, flew up to grip her hips. Her skin was like heated velvet.
“Is this correct?” she panted, her rhythm stuttering. “The angle… the depth of stroke…”
“I don’t… I don’t know,” he confessed, his own hips lifting involuntarily to meet her downward grind. “Just… don’t stop.”
Her movements became less analytical, more instinctive. She rose up until he was almost free of that devastating heat, then slammed back down, taking him deep. A sharp cry tore from her throat—not a moan of pleasure, but a shout of surprised, overwhelming sensation.
“Fuck,” she breathed, the obscenity clumsy and glorious in her mouth. “Ethan… the feedback loop… it’s…”
She began to ride him in earnest. Her thighs tightened around his hips. Her bouncing breasts, free beneath his old t-shirt, brushed against the fabric with each frantic movement. The wet, slapping sounds of their joining filled the room, a lewd counterpoint to their ragged breathing. The academic was gone. The succubus was here, raw and hungry and learning fast.
Ethan was lost. Every coherent thought was burned away by the furnace of her body. He gripped her hips tighter, fingers digging into her flesh, helping to guide her, to set a pounding, desperate rhythm. He thrust up into her, meeting each downward plunge with a drive of his own.
“Yes! There! The friction coefficient increases!” she cried out, her head lolling forward. Her hair tickled his chest. “The energy transfer is… it’s exponential!”
She was milking him, her internal muscles gripping and releasing in a rapid, sucking rhythm that was pulling him relentlessly toward another climax. The buildup was different this time—deeper, hotter, an avalanche gathering in his balls and the base of his spine.
“I can feel it,” she chanted, her voice rising. “The gathering charge. The mortal flame… it’s… it’s mine.”
Her own movements became frantic, chaotic. The bedframe slammed against the wall with a steady, punishing rhythm. A picture frame on the desk rattled. The buzzing fluorescent light seemed to swell in volume.
Ethan felt his control shatter. “Lilith… I’m gonna…”
“Give it to me!” she shrieked, her body bowing backward. Her eyes blazed like suns. The room temperature spiked. The scent of ozone became overwhelming, mixed with the salty-sweet musk of sex. “Pour it into me! All of it!”
It was a command he couldn’t disobey. With a final, brutal thrust that buried him to the root, he came. It was a convulsive, soul-deep eruption, a white-hot flood that pulsed from him in seemingly endless waves. He shouted, a wordless cry of release and surrender.
As he spasmed inside her, Lilith let out a sound that was not human. It was a keening, triumphant wail that seemed to vibrate the very air. Her body clamped down on his, a vise of pulsating ecstasy. A visible wave of that faint, shimmering heat erupted from her skin, washing over them both. The glow from her eyes flooded the room, then suddenly winked out.
She collapsed forward onto his chest, a dead weight. They were both slick with sweat, stuck together with the evidence of their act. Her breath came in hot, ragged gusts against his neck. His heart hammered against his ribs, a frantic drum echoing hers.
Slowly, the world seeped back in. The hum of the fridge. The ache in his hips. The stunning, impossible reality of the warm, naked demon lying spent on top of him.
Minutes passed. Her breathing evened. She stirred, pushing herself up on her elbows. Her eyes were their normal, startling green again, but they were deep, satiated pools. She looked down at him, at the connection still joining them. A single drop of sweat trailed from her temple, down her cheek, and dripped onto his lip.
A single drop of sweat trailed from her temple, down her cheek, and dripped onto his lip.
It tasted like salt and something else, something electric that fizzed faintly on his tongue. She stared at him, her expression unreadable in the dim light from the solitary desk lamp. The profound, satiated stillness between them felt heavier than the chaos that had preceded it.
She shifted slightly, and he winced at the sensitivity, the overwhelming fullness. Her inner muscles gave a final, unconscious flutter around him, and he sucked in a sharp breath through his teeth. The sound seemed to snap her out of a trance.
Her brows, pale and delicate, drew together. She studied his face—the sheen of sweat on his forehead, the wide, stunned dilation of his pupils, the way his bottom lip trembled just enough to notice. The fierce hunger in her eyes had banked to a low, simmering ember, replaced by a flicker of something uncertain.
“Ethan?” Her voice was raspy, used. It wasn’t a purr or a clinical observation. It was just a sound.
She lifted a hand, hesitant, and brushed a strand of his damp brown hair from his forehead. Her touch was cooler now. The claws were retracted, just the pad of her thumb stroking his temple. Her gaze searched his, tracing the lines of panic and exhaustion etched there.
“Are you…” she started, then stopped, her nose wrinkling as she searched for the right term. The succubus who had spoken of friction coefficients and optimal conduits was gone. “Are you okay?”
The question hung in the air, absurd and devastating. It echoed off the cinderblock walls, louder than the bedframe slamming or her triumphant wail. It was the most human thing she had ever said to him.
A shaky, disbelieving laugh huffed out of him. It hurt his chest. “Okay?” he repeated, the word cracking.
He didn’t know what to do with it. He was buried inside a supernatural being on his dorm bed, his heart trying to punch its way out of his ribcage, every nerve ending screaming a confused chorus of terror and satiation. Okay wasn’t a continent on the map of where he was.
“I don’t know,” he finally said, his own voice a rough stranger’s. “That was… a lot.”
She nodded slowly, as if he’d presented a complex data set. “The energy exchange was… intense.” Her green eyes dropped to where their bodies were still joined, then back to his face. A faint, worried crease appeared between her brows. “You’re trembling.”
He was. A fine, uncontrollable shake had taken hold of his limbs, a seismic aftereffect of the adrenaline and the release. “Yeah.”
“Is that a standard physiological response?” she asked, but the clinical edge was softened by genuine concern. Her hand was still on his temple, a grounding point of contact. “Or is it a malfunction?”
“I think it’s standard,” he whispered. “For this. For… after.”
“Oh.” She considered this. “The transfer was complete. I am… nourished.” She said it with a kind of quiet awe, as if admitting to a profound and personal secret. “The static is gone. The hollow feeling. It’s full. Quiet.”
She shifted again, beginning to lift herself off him. The separation was a slow, slick, profoundly intimate slide. He gasped at the sensation, a mix of loss and overwhelming relief. She moved to lie beside him on the cramped single bed, her body curling towards his in the mess of damp sheets. The scent of sex and ozone clung to her, to both of them.
She propped her head on her hand, studying his profile as he stared at the water-stained ceiling tiles. Her fiery hair spread over his pillow. “I did not calculate the… systemic shock to the host. The manuals did not cover aftershocks.”
“There are manuals?” he mumbled, still not looking at her.
“Metaphorical ones.” She was quiet for a long moment. The hum of the broken AC unit cycled back on. “Your ‘okay’ is important.”
That finally made him turn his head. Her face was inches from his, serious and open. “Why?”
“Because... because I don't want to hurt you."
The words landed softly between them, a stark contrast to the violence of their coupling. They sounded alien in her mouth, tentative and true.
Ethan just stared. His mind, still sluggish and buzzing, couldn’t assemble a coherent response. Hurt him? She’d atomized his entire understanding of reality. She’d unraveled his bedding into an eldritch pretzel and ridden him with the fervor of a starving jackhammer. The physical mechanics had been overwhelming, but they hadn’t, in a purely technical sense, been painful.
The hurting felt deeper. It was in the terrifying rearrangement of his world.
“You’re asking that now?” he finally managed, his voice rough. He gestured weakly at the tangled sheets, at their damp, naked bodies. “A little late for a disclaimer.”
“I am not issuing a disclaimer,” she said, frowning. The worry-line between her brows deepened. She seemed genuinely puzzled by his reaction. “It is a conditional query. The experiment was a success. My functionality is confirmed. Sustenance was achieved.” She paused, her green eyes searching his face. “But your trembling is a negative variable. Your ‘not okay’ is a system error.”
“I’m not a system!” The laugh that followed was brittle. “I’m a person. You just… you just had me. And now you’re running a diagnostic?”
She flinched, just a tiny twitch of her lower lip. The academic shield was completely down. This was something else, something raw and confusing even to her. “I am not… running a diagnostic. I am assessing… continuation.”
She rolled onto her back, mirroring his pose, her shoulder pressing against his. They lay side-by-side, staring up at the same stained ceiling. The heat from her body was a steady, living radiance beside him. The smell of sex was already cooling, mingling with the ever-present scents of dust and old pizza.
“The hunger will return,” she stated, matter-of-fact. “The quiet inside me is temporary. It is a satisfied emptiness. It will become a demanding one again.” She turned her head on the pillow. Her hair whispered against the cotton. “I could seek other sources. Other… subjects.”
A jagged, unexpected bolt of something hot and unpleasant lanced through Ethan’s gut. Jealousy? Possessiveness? It was absurd.
“Great,” he muttered, closing his eyes. “Go find some frat guy. He’ll probably last longer.”
“He would be inferior.”
The statement was flat, absolute.
Ethan opened his eyes, turning to look at her. She was already watching him.
“Inferior how?” he asked, the question leaving his mouth before he could stop it.
“His energy would lack complexity,” she said simply. “It would be simple brine and heat. Yours is layered. There is fear, and intellect, and a… a resonance.” She struggled for the word. “The shame has a particular flavor. The panic, a unique frequency. It is nourishing on multiple levels.” Her gaze was frighteningly direct. “You are an optimal source.”
It was the least romantic thing anyone had ever said. It made his skin feel too tight.
“So I’m a good meal,” he said, bitterness coating his tongue.
“You are a compatible ecosystem,” she corrected. She propped herself up on one elbow again, her expression turning earnest, almost pleading. The sheet slipped down to her waist. “The other variables are also favorable. You provide shelter. The grey hoodie. You explained the spinning tormentor for fabrics. You do not scream or try to wield religious iconography. You are… manageable.”
“Manageable,” he echoed, deadpan.
“A technical term,” she said, waving a hand dismissively. Then her focus sharpened, intensifying. She placed her palm flat on his chest, over his still-quick heartbeat. Her touch was cool. “The logistics are sound. Proximity ensures efficiency. A recurring, scheduled transfer would prevent the hunger from reaching critical levels. It would be… sustainable.”
He could only stare up at her, at the stunning, impossible creature calmly proposing a feeding schedule in his ruined bed.
“You’re talking about… what? Moving in? Permanently?”
“It is the logical conclusion,” she nodded. A flicker of uncertainty crossed her features. “If the host is willing.”
Silence thickened in the room. The hum of the fridge seemed to grow louder. Ethan’s thoughts were a roaring static. He saw the next week, the next month, unspooling in a series of impossible moments. Explaining her to no one. Her trying to use a debit card. Another night like this one, and another.
The sheer, world-bending insanity of it.
And beneath the terror, a treacherous, humming thread of something else. It was the same thread that had vibrated when she’d said other subjects. It was the memory of her awe-struck whisper, “It feels…” It was the utterly novel sensation of being needed, in a desperate, fundamental way that had nothing to do with a paper he could write or a problem he could solve.
Lilith watched the conflict play out across his face. Her hand remained on his chest, feeling the gallop of his heart. She leaned closer. Her voice dropped to a whisper, shedding the last of its technical pretense, becoming startlingly, vulnerably clear.
“Ethan,” she said. Her green eyes were wide, reflecting the dim light from his desk lamp. “Can I keep you?”