Chapter 5: Sister's Devotion
The house slept. The usual symphony of creaking pipes and shifting floorboards had dwindled to a faint, irregular heartbeat. In the blue glow of his LED strips, Avery lay awake. The power wasn’t a buzzing now; it was a deep, oceanic pressure, a ceaseless weight that demanded discharge. Anna, in her room down the hall, was a warm, empty socket waiting for his plug. The thought was clinical and profoundly arousing.He didn’t get up. He simply extended the command, a psychic filament thin as spider silk that slipped under her door and into the fog of her sleep. It wasn’t a shout.It was a pull. A reorientation of her entire world toward his need.He heard her door click open.A soft shuffle of bare feet on the hall runner. His own door opened without a sound. She stood there, backlit by the weak nightlight from the bathroom, wearing only a large t-shirt. Her face was slack, eyes half-lidded, but a small, eager smile played on her lips.Sleepwalking, but into a purpose.
“Come here,” he whispered.She moved to the side of his bed, a silent phantom. The blue light washed over her, making her skin look pale and cold, but he could feel the heat radiating from her core.
“You know what you’re for,” he said, his voice low in the dark.A slow nod. Her hands went to the hem of her shirt, pulling it up and over her head in one fluid motion. She stood naked, her body a familiar landscape now newly consecrated.She didn’t cover herself.She presented.“Get in. On your side, facing away.”
She obeyed, sliding under the covers beside him. Her skin was warm, her breathing already accelerating.He moved behind her, spooning her, his body curving around hers. He wore only his boxers. He nudged her legs apart with his knee, and she willingly opened them, bending her top leg forward. His hand slid down her stomach, through the coarse hair, finding her cunt already slick and swollen. The animal part of her was always ready for him now, preconditioned, its only function.
He hooked his fingers into the waistband of his boxers and shoved them down, freeing his erection. He positioned himself at her entrance, a blunt, insistent pressure.He didn’t thrust. He simply pushed forward, a slow, inexorable invasion, until he was fully sheathed inside her.A sharp, gratified sigh escaped her lips. It wasn’t passion.It was utility.A lock clicking into place.
“Good girl,” he murmured into the nape of her neck, smelling her sleep-scented hair.“Perfect little sleeve. Just stay there and be warm. Be useful.”
He settled back against his pillow, one arm draped over her hip, his cock buried to the root in her tight, yielding heat.This was it. This was the clarity he craved. Not the frantic fucking of the previous night, but this absolute, quiet ownership.She was a living, breathing sheathe.Her only purpose was containment. To hold him.To be occupied.Her body relaxed around him, accepting the intrusion as its natural state. Her breathing deepened, synchronizing with his.He closed his eyes. The pressure in his head eased, channeled out through the point where their bodies joined.He drifted.
In the hazy borderland of sleep, his dreams were formless pools of color and sensation. In one, he was pushing through a thick, warm membrane.His hips twitched forward in reality, a shallow, unconscious thrust. Anna made a soft, wet sound beneath him, a tiny gasp that was more acknowledgment than protest. He did it again, a slow, grinding pulse deep inside her sleeping form. Her inner muscles clenched instinctively, a milking reflex that pulled a low groan from his throat even as he slept.
He awoke sometime later, not fully, but to a dim awareness.The room was still dark. He was still inside her, hard, maybe harder. Her cunt was drenched, a slick, hot channel around him.She was awake too. He could feel the subtle tension in her body, the conscious effort to remain perfectly still and receptive.
“You’re dripping,” he mumbled, his lips against her shoulder.“Dripping all over my sheets, you filthy slut. Can’t even control yourself while you’re being used.”
“Sorry,” she whispered, the word thick with sleep and shame.Not shame at the act, but at failing in her function.
“It’s okay,” he breathed, kissing her skin. “It just means you’re a perfect little pervert.Your fucked-up cunt knows its job. It knows it’s just a hole for me to keep my cock in.” He rocked into her again, a lazy, luxurious thrust that made her arch her back.“See? It gets even wetter when I remind it.”
He fell asleep once more, this time with a slow, rhythmic motion of his hips, a gentle, possessive fucking that was as natural and thoughtless as breathing. He dreamed of molding clay, of pushing his thumbs into a soft, warm mass that yielded perfectly, taking any shape he desired.
Dawn came as a grey smear at the window.Avery awoke completely, rested and clear-headed. He was still nestled inside Anna, who was lying so still he thought she was asleep.But her breathing was too controlled. She was waiting.He flexed his cock inside her, feeling the tight, slick grip. She let out a quiet, shuddering exhale.
“You’ve been here all night,” he said, his morning voice rough.“Yes.”
“Did you sleep?”
“A little. It’s… hard to sleep with you inside me. In a good way.” Her voice was small, reverent.He began to move, proper thrusts now, slow and deep and grinding. The wet sounds were obscenely loud in the quiet room. He wrapped his arm tighter around her, pulling her against him as he fucked her awake.
“This is your best use, Anna,” he gritted out, his pace increasing.“Better than any job. Better than any of those useless boyfriends.You’re a fucking appliance.A warm, wet appliance for my cock. Say it.”
“I’m your appliance,” she moaned, pushing back against him, her hand reaching behind to claw at his thigh.“Your warm hole. Your cocksleeve.”
“And you love it, don’t you? You love being reduced to this.”
“I love it,” she sobbed, the confession torn from her. “I love it, Avery, please, I need it—”
He drove into her, hard and final, his release pumping into her with a series of deep, possessive pulses.He held himself there, locked inside her, until he was completely spent. Then, with a soft, wet sound, he pulled out.
She immediately rolled onto her back, looking up at him with wide, desperate eyes.Her thighs were slick, the sheets beneath her stained. The emptiness was a yawning terror for her now.
“Get a washcloth,” he said, not unkindly.“Clean yourself.Then clean the sheets.”
The order was a lifeline. Purpose. She scrambled out of bed, her naked body a map of his ownership, and hurried to the attached bathroom.He heard the water run. He lay back, staring at the shifting patterns of light on his ceiling, a profound and placid satisfaction settling in his bones. She wasn’t just conditioned.She was reforged. Her ambition, her listlessness, all of it had been funneled into this single, all-consuming purpose: to be available.To be used.
She returned, kneeling beside the bed with a warm, wet cloth. She cleaned him first, with a tenderness that bordered on worship, wiping his softening cock with meticulous care. Then she attended to herself, and finally, to the evidence on the sheets. She worked in silence, a dedicated servant tending to the aftermath of a sacrament.
When she was done, she stood there, clutching the soiled cloth, waiting.“You can go,” he said. “I’ll see you at breakfast.”
The dismissal was its own kind of reward.It meant the service was complete, for now.A job well done. Her smile was beatific, grateful. She pulled her t-shirt back on and padded silently to the door.“Anna,” he called, just as her hand touched the knob.
She turned, hopeful, eager.“You did good,” he said.That was all she needed. She slipped out, closing the door with a soft click.Avery listened to the faint sound of her retreating footsteps. Down the hall, a door closed. The house was still asleep, unaware of the new scripture written into its walls, into the very flesh of one of its own. He had turned a person into a purpose.And it was the most beautiful thing he had ever done. The emptiness of her was now his greatest creation. He stretched, feeling the cool air on his skin where she had been, and began to plan the rest of the day.
The house held its breath around him. Down the hall, in the room that had been hers since childhood, Anna leaned back against the closed door. The coarse wood grain pressed into her bare shoulders. Her whole body hummed, a live wire stripped of its insulation, every nerve ending screaming from the prolonged, passive use. The slick chill between her thighs was a brand.It was a claim.
She stumbled to her bed, the old mattress springs groaning a familiar protest beneath her weight.It sounded different now.It sounded like failure. Her fingers, which had just cleaned his spend from her skin, now dove between her own legs with a frantic, bruising urgency. She wasn’t seeking pleasure, not as she’d once understood it. She was performing an exorcism of need. Her cunt was a swollen, throbbing ache, an empty socket screaming for the plug that had filled it all night.
“Fuck,” she hissed into the quiet, her fingers circling her clit with rough, desperate speed.
The memory was a physical invasion: the slow, full feeling of him pushing inside without ceremony, the deep ache as he settled, the wet heat of her own body accepting him as a permanent fixture. She imagined him now, sleeping peacefully, his cock soft and satisfied because she had sheathed it. Because her worthless, wet cunt had a use.The thought wasn’t a humiliation. It was a revelation so bright and terrible it burned.Her hips bucked off the mattress, riding her own hand.
“His little sleeve,” she gasped, the words a filthy prayer.“Just a fucking cocksleeve. A useless bitch made useful.” Her other hand clawed at her own breast, pinching a nipple hard, the pain sharpening the dark bloom of arousal low in her belly. She pictured Avery’s dispassionate face, his calm words.Perfect little pervert. The approval in that statement was the only oxygen in the room.
She came with a strangled cry, her back arching, her toes curling into the tangled sheets. The orgasm was short and violent, a sharp detonation that left her shuddering and hollow.It wasn’t enough. The emptiness yawned wider, a gnawing void that the climax had only illuminated. She needed to feel that degradation again, to taste her own worthlessness and find it sweet.Her fingers, still slick, plunged inside herself. She fucked herself with two, then three fingers, scissoring them, stretching her own tender flesh in a pathetic mimicry of his possession. “Should’ve slept with it in,” she muttered to the ceiling, her voice ragged. “Should’ve begged him to keep it in all day.” She imagined walking through the house, doing dishes, making coffee, with him embedded in her.A secret utility. A kept thing.
Another climax ripped through her, this one deeper, a rolling wave that clenched around her thrusting fingers.She cried out, biting her own wrist to stifle the sound. Tears leaked from the corners of her eyes, cooling on her hot skin. She was a mess of sweat and spit and her own fluids, writhing on the damp spot she’d made. The shame was there, a distant, theoretical concept, but it was drowned under a tsunami of addicting need. She was his appliance.His favorite, most-used tool.
Her movements became slower, more focused, a relentless grind against her own palm. The oversensitivity was its own kind of torment, a painful reminder of the capacity she now served.“Again,” she whispered, commanding herself. “Cum for being such a dirty fucking thing.” She thought of his smile, that cold curve of satisfaction. It was the only prize.It was everything.
She came a third time, a weaker, fluttering pulse that left her gasping and spent.Her body went limp, muscles unlocking. The frantic energy dissipated, leaving behind a deep, satiated exhaustion. She stared at the water-stained ceiling, her breathing slowly returning to normal.The humming in her veins had quieted to a contented purr. Her fingers, resting on her stomach, were sticky.The smell of sex and sweat and him filled the small room.
A profound, unsettling peace settled over her. The listless agitation that had defined her for years was gone.In its place was a crystalline purpose, narrow and deep as a well. She had a function.She was a receptacle.The simplicity of it was beautiful. She closed her eyes, a soft smile touching her lips as she replayed the feeling of him stirring inside her while he slept. Her hand drifted back down, not to stir again, but to rest possessively over the wet, used flesh that was now her reason for being.She would be ready for him again. She would always be ready.
She would always be ready.
The sound of the shower running in the main bathroom eventually pulled Avery from his bed. He dressed in silence, the fabric of his jeans rough against his skin still imprinted with the memory of her warmth. Downstairs, the kitchen was a chiaroscuro of morning light and deep shadow. Anna was already there, leaning against the counter, a mug of steaming coffee cradled in her hands. She wore loose sweatpants and the same t-shirt from the night. Her eyes lifted to meet his the moment he entered, a deep, instinctual tracking.“You’re up,” she said. Her voice was sleep-soft but clear.
“You made coffee.”
“I did.” A simple statement, weighted with significance.She hadn’t made coffee for the household in years. She turned and fetched his favorite mug from the drainer, filling it from the pot without asking. She set it on the table where he usually sat.A small offering.A sacrament.
He took the seat, watching her.She didn’t sit. She stood nearby, sipping her own drink, her body angled toward him in a posture of waiting attendance. The house was quiet beyond the hum of the refrigerator.No Lena yet, no Claire or Adam.They were in a pocket of stolen time.
“How do you feel?” he asked, his tone casual, as if inquiring about the weather.
A faint tremor went through her hand holding the mug.She looked down into the dark liquid. “Empty,” she said. Then she looked back at him, a spark of desperate honesty in her grey eyes.“In the good way. The right way.”
Avery smiled, a thin, satisfied curve of his lips.He took a slow sip of the coffee.It was perfectly made. “That’s because you are empty.You’re a vessel. And last night, you were properly filled.” He set the mug down with a soft click. “I think you deserve a reward for that.For being so good.So perfectly accommodating.”
Her breath hitched. She placed her own mug on the counter, her movements precise. “What kind of reward?”
“Come here.” He didn’t point or gesture.He simply commanded.She was before him in three silent steps. He reached out and hooked his fingers into the waistband of her sweatpants, pulling them down just past the curve of her hips.He didn’t remove them. He left them there, pooled around her thighs like a shackle. His other hand slid between her legs, palming her cunt through the thin cotton of her panties. She was already wet, a humid heat blooming instantly under his touch.
“The reward,” he said, his voice dropping to a conspiratorial murmur, “is that you won’t have to feel empty anymore. Not when you’re serving your purpose.” He pushed the damp fabric aside, two fingers slipping easily into her slickness. She gasped, her hands coming down to brace herself on his shoulders. “When you are full of me, Anna, your body will understand it’s complete.It will thank you. Continuously.”
He pressed deeper with his fingers, curling them, feeling the clench of her inner walls. He focused his will, not on rewriting her mind, but on rewiring her nervous system. It was a finer, more intimate adjustment. He traced the pathways of pleasure, amplifying them, hardwiring them to the specific state of being penetrated, occupied, claimed. He created a feedback loop where the presence of an invader—his cock—would trigger a perpetual, low-grade orgasmic response. A thank you from her ruined biology.He withdrew his fingers, slick and gleaming.“On your knees. Under the table.”
She moved without hesitation, her sweatpants hobbling her steps. She crawled beneath the vast oak table, a dark space that smelled of old wood and lemon polish. The world reduced to this: the underside of the table, the legs of his chair, his jeans-clad legs before her. He unbuttoned his fly, freeing his already-stiffening cock. He guided himself to her waiting mouth.“Suck. Just enough to get me good and wet for your other hole.”
Her tongue laved the head, her lips closing around him, taking him deep with a practiced ease that was both shocking and inevitable. She worshipped him there, her hands on his thighs, until he was slick with her saliva.He pulled back.“Turn around. Present that needy cunt.”
She maneuvered in the confined space, her back to him, her head near the opposite table leg. She arched her back, pushing her ass toward him, offering herself. He positioned himself at her entrance, the head of his cock nudging against her dripping folds. He could feel the new programming he’d just installed humming in the air between them, a magnetic field of depraved cause and effect.
He pushed inside her with one smooth, deep stroke. Her entire body jolted, a stifled cry echoing under the table.It wasn't a cry of pain.It began immediately.
A low, shuddering moan leaked from her lips as her inner walls began to flutter and grip him in a rapid, rhythmic pulse. Not the building wave of a typical orgasm, but a sustained, involuntary series of contractions. Her body was convulsing in a continuous state of climax, her cunt milking him in endless, rippling waves triggered solely by his presence inside her.
“Oh god… Avery… it’s… it won’t stop…” Her voice was a broken, euphoric whisper.
“It’s not supposed to stop,” he said, his voice calm above her. He held himself deep, not moving, letting her body do the work. The sensation was incredible—a hot, vice-like, ceaseless massage.“Your body is just saying thank you. This is your reward.This is your purpose. Cumming for your little brother’s cock like the perfect little fucktoy you are.”
Her hands scrambled against the floorboards, her forehead pressed to the cool wood.Tears of overwhelm streaked her cheeks. The pleasure was relentless, a crestless wave that drowned every thought.Her mind, as he’d promised, emptied. There was no Anna, no past, no future. There was only the fullness and the devastating, endless feedback of gratitude roaring through her nerve endings.Words dissolved into guttural, animal sounds.
He began to move, shallow, probing thrusts that sent fresh, jagged currents through her system. Each movement was accentuated by another tight, clenching pulse from her cunt. She was so wet now he could hear it, a filthy, squelching soundtrack to her unraveling.
“You’re just a set of holes wired to cum, aren’t you?” he grunted, picking up his pace. The table legs creaked.“Your brain turns off when your cunt turns on. This is all you are now.”
“Yes!Yes! All I am!” she choked out, her body writhing under the onslaught of sensation. The emptiness was gone, burned away in the endless fire of this reward.This was better than any high, any validation she’d ever sought. She was a machine designed for this single, glorious function.
The sound of footsteps on the stairs cut through the humid air under the table.Lena’s familiar, measured tread. Avery stilled, buried to the hilt. Anna’s body continued its uncontrollable, fluttering orgasm around him, a relentless, wet vibration.“Anna?” Lena’s voice called out, hesitant, from the kitchen doorway. “Are you down here? I thought I heard something.”
Under the table, in the dark, Anna’s breath caught. Her cunt squeezed him tight, a reflex of fear and shame that only intensified the feedback loop.A fresh, silent sob wracked her shoulders. Avery placed a steadying hand on the small of her back, a silent command to be still, to be silent.
He held her there, full, rewarding her, as Lena’s presence lingered just a few feet away.