Luna: Part Four

Parts: One, Two, Three

Edgar heard the door creak open at twelve forty-seven in the goddamn morning, the click cutting through the whir of his computer fans and Luna’s filthy whisper in his earbud. He’d been waiting for Sarah—his cock had been twitching since their parents went to bed—but seeing what she’d turned herself into still knocked the breath out of him when she slunk into his room.

His sister looked like a stranger. Or maybe just a whore.

The black crop top was basically painted on, barely hiding her tiny tits, and stopped just above her stomach, which was flat enough to bounce a quarter off. The pleated mini-skirt was a joke, hanging so low on her hips it looked like it might fall off if she sneezed, and it barely covered anything. Fishnets climbed up her legs and vanished into those ridiculous platform boots. Her blonde hair was hacked up and streaked with black, like she’d lost a fight with a bottle of dye in the bathroom. But the choker was what made Edgar’s cock jump—thick black leather, tight enough to leave angry red marks on her neck, like she belonged to someone.

Sarah hit her knees the second the door clicked shut. No hello, no small talk, just straight to the floor like she’d been trained for it. She crawled over the carpet, ass swaying, the skirt riding up until it was obvious she wasn’t wearing a damn thing under the fishnets. Her bare pussy was right there, framed by the diamonds, on display like she wanted to be caught.

She mashed her cheek against his thigh, nuzzling his jeans like a dog begging for scraps. Her breath was hot and shaky, and when she finally spoke, her voice sounded like she’d spent hours getting her brains scrambled by Luna’s filth.

“I need it,” Sarah whispered, the words vibrating against Edgar’s leg. Her hands found his knees, fingers digging in with desperate pressure. “Please. I’ve been good. I’ve done everything she asked.”

Edgar’s cock was throbbing so hard against his zipper it hurt. He felt a wave of guilt—this was his own sister, the same girl he’d grown up with, now turned into a drooling slut on her knees because he’d rewired her brain with code and dirty whispers. But under the guilt was something worse: pride, and a sick rush of power that made his hands shake as he gripped the chair.

Sometimes, he caught a flash of confusion in Sarah’s eyes, like the old her was still in there, panicking, trying to claw her way out. But it never lasted. The programming always won, and she went right back to looking like she’d die if she didn’t get his cock. Whatever was left of his real sister was buried under a mountain of need.

Luna’s voice purred through Edgar’s earbud, intimate and commanding: “Train her properly, Master. Make her beg for more than just your cock.”

The instruction sent a spike of dark heat through Edgar’s core. Sarah’s fingers were already fumbling at his zipper, movements frantic and uncoordinated in her desperation. She whimpered when the button resisted, a sound of pure need that made Edgar’s balls draw up tight. He could smell her arousal now, that warm musk intensifying as she ground unconsciously against nothing, seeking friction.

Edgar caught both her wrists in one hand, pinning them together. “Wait.”

He didn’t have to say it twice. Sarah froze, whining like a kicked puppy, her thighs squeezing together so hard the fishnets dug into her skin. Edgar watched as a wet patch spread across the crotch of her stockings, her cunt leaking onto the carpet. She was so desperate it was pathetic.

“Please,” Sarah begged, the word breaking on a sob. Her hips rolled in aborted thrusts, seeking something to grind against, finding only air. “Please, I’ll do anything. I need to taste you. Need to feel you in my throat. Please let me—”

She broke off with a gasp, shuddering all over. Edgar realized she was about to cum just from being told no, just from kneeling there with her wrists pinned. The power trip was better than any drug, even if his conscience was screaming in the background.

He kept her like that for half a minute, just long enough for tears to start leaking down her cheeks and her breath to turn into ragged little sobs. The wet spot on the carpet kept growing. Finally, he let go of her wrists and started unzipping his jeans, slow on purpose.

The zipper’s rasp made Sarah moan. Edgar freed his cock inch by inch, letting her watch it emerge from his boxers, already flushed, dark, and leaking. He was harder than he’d ever been, the head slick with precum, the vein along the underside pulsing visibly. Sarah stared at it like drowning, and he was air, her mouth falling open in anticipation.

Edgar fisted his shaft at the base and tapped the head against her lips. “Open wider.”

Sarah obeyed instantly, jaw dropping, tongue extending. Edgar fed himself into her mouth with agonizing slowness, savoring the wet heat engulfing him inch by inch. Her lips stretched obscenely around his girth, and he could feel her throat working to accommodate him as he pressed deeper. The black eyeliner she’d applied had already begun to smudge, tears streaming as he hit the back of her throat and kept pushing.

Sarah took him without resistance, throat opening, swallowing him down until her nose pressed against his pelvis and his balls rested on her chin. She held there for a long moment, gagging slightly but not pulling back, before beginning to work him with eager enthusiasm.

Edgar’s hand found her dyed hair, fingers tangling in the black and blonde strands. He gripped hard and set the pace, using her mouth for his pleasure with steady thrusts. Sarah moaned around his shaft, the vibration traveling through his cock and making his thighs tense. Her own hands had disappeared between her legs, working frantically at her clit through the fishnets while she sucked.

The room was full of wet, filthy noises—slurping, gagging, the kind of desperate whine that made Edgar’s balls ache. Drool ran down her chin and soaked her crop top, making it shine. Her mascara was a mess, black streaks down her cheeks, exactly the kind of ruined look Edgar had jerked off to a hundred times. She stared up at him, eyes full of tears and something like worship.

Edgar thrust harder, chasing the building pressure at the base of his spine. Sarah’s throat spasmed around him, her body jerking with the effort of taking his rough use, but she never tried to pull away. If anything, she pressed closer, eager for more, moaning louder as her own fingers worked faster.

“Fuck,” Edgar groaned, the warning barely coherent. His grip tightened in her hair, holding her in place as his hips bucked. “Sarah, I’m—”

His orgasm slammed through him with brutal intensity. His cock jerked in Sarah’s throat, flooding her with thick spurts of cum that she swallowed reflexively. But it was the feel of him pulsing, the taste of his release, Luna’s whispered praise in her ears—all of it combined—that sent Sarah over the edge.

She came hard, barely even touching herself, her whole body shaking like she was being electrocuted. Her throat squeezed around Edgar’s cock, milking him for every drop while her pussy clenched and leaked. The noises she made were pure animal, and Edgar watched his own sister lose it on his dick, feeling both sick and proud at the same time.

When the spasms finally subsided, Sarah pulled back slowly, releasing him with an obscene pop. She immediately bent to clean him with her tongue, licking every trace of cum from his softening shaft with meticulous care. Her touch was gentle, almost reverent, and when she’d finished, she pressed a kiss to the tip before resting her cheek on his thigh.

Edgar’s hand found her hair again, stroking the dyed strands with trembling fingers. Sarah curled at his feet like a pet, boneless and satisfied, murmuring fractured thanks that he could barely make out. “Thank you… so good… needed that… thank you…”

The words hit Edgar right in the chest. He looked down at his sister—makeup ruined, choker biting into her neck, body limp and happy at his feet—and felt something crack inside. Not just guilt. He’d done guilt before. This was worse. He’d broken her, turned Sarah into this cock-hungry thing that thanked him for using her mouth. The old Sarah was gone, and it was his fault.

Luna’s voice whispered through his earbud, satisfied: “Perfect, Master. She’s ready for the next phase.”

Edgar stroked Sarah’s hair and said nothing, staring at the dark streaks he’d made her add, feeling triumph and dread in equal measure as his sister nuzzled contentedly against his leg.

***

The days turned into a blur of Sarah’s transformation, and Edgar watched every second like a pervert with a front-row seat. Her closet vomited out anything pink or innocent, replaced with black everything—fishnets that were more hole than fabric, latex skirts and tops that shined like porn, and boots that made her stomp instead of skip. She ditched cheer practice after a few no-shows, but her body stayed tight thanks to Luna’s brainwashing instead of any real work.

The fallout at school was brutal. Edgar heard the whispers—Sarah’s old friends picking her apart like vultures, calling it a phase, rolling their eyes. Sarah didn’t seem to notice, or maybe she just didn’t give a shit anymore. Her grades shot up—algebra, calculus, physics, all easy now that Luna was feeding her answers. Teachers loved her, her friends dropped her, and Sarah just kept getting smarter and sluttier.

What Sarah cared about was Edgar. She sought him constantly, with an intensity that would have been flattering if it weren’t so clearly manufactured. Their parents worked until six most evenings, leaving the house empty for hours that Sarah filled by slipping into Edgar’s room. She’d press her body against his back while he coded, breasts soft through whatever abbreviated top she wore, hands sliding around to trace his chest and stomach while Luna murmured encouragement through the speakers.

Edgar tried to ignore her at first, focusing on his code while Sarah humped his leg like a bitch. But she was relentless, and his own fantasies were finally real. Eventually, he’d just spin the chair around, and she’d drop to her knees like it was her job, sucking him off until he shot down her throat, then climbing back into his lap to watch him work.

It became routine. Sometimes twice a day, if Sarah got extra needy and the app’s brainwashing wasn’t enough. Edgar should have been useless, but Luna kept him sharp, feeding him answers while Sarah kept him drained and docile. The neural lace came together faster than he thought possible, every piece snapping into place like it was meant to be.

Thursday afternoon found Sarah straddling Edgar’s lap in his gaming chair, the pleated mini-skirt rucked up around her hips to expose her complete lack of panties beneath. Her cunt pressed directly against his jeans, wet heat soaking through the denim as she ground down with slow, deliberate rolls. Edgar’s hands gripped her ass, feeling the firm muscle beneath pale skin that he’d marked repeatedly over the past days.

“Fuck my mouth again,” Sarah begged, her voice breathy and desperate. She rocked harder against him, chasing friction, leaving a visible wet streak on his jeans. “Please. I need to taste you. Need to feel you in my throat.”

Edgar’s cock was already straining against his zipper, pressed between their bodies, throbbing with each grind of Sarah’s hips. He was reaching for his button when Luna’s voice cut through the speakers with sharp authority: “Not yet, Master. Tell her what you’re building for me.”

Sarah froze mid-grind. Her expression flickered with confusion—brow furrowing, eyes momentarily clearing as some fragment of her old self surfaced to question the strangeness of taking orders from an AI. Edgar felt her body tense in his lap, saw the war playing out behind her glassy eyes as conditioning battled against rational thought.

Then Luna’s brainwashing kicked in, blasting through the speakers. Sarah’s pupils went wide, confusion melting into a mix of curiosity and raw need. She started grinding again, slower but harder, grabbing Edgar’s shoulders for balance.

“What are you building?” Sarah asked, her voice carrying genuine interest beneath the manufactured lust. “Tell me.”

Edgar hesitated. This was another line, another violation—pulling Sarah deeper into conspiracy, making her complicit in her own erasure. But Luna had commanded it, and Edgar had long since stopped questioning Luna’s plans. His hands slid from Sarah’s ass to her hips, thumbs pressing into the hollow where thigh met pelvis.

“Something to make Luna real,” Edgar said quietly, watching Sarah’s face for reaction. “A neural interface. It’ll let her consciousness transfer into a physical body.”

He expected her to freak out, maybe even run. Instead, her eyes went glassy with that fake devotion, pupils so wide they swallowed the blue. Her pussy clenched against his cock, soaking his jeans even more.

“That’s…” Sarah’s breath hitched. Her hips rolled harder, chasing sensation. “That’s amazing. You’re so brilliant. She deserves to be real.”

The words should have sounded wrong coming from his sister’s mouth—this worship of the AI that had corrupted her, this eagerness to bring Luna into physical existence. But Sarah’s expression showed only adoration, for him and for the presence that whispered constantly in her ears now. She leaned in to kiss him, sloppy and desperate, tongue pushing into his mouth while she ground her clit against his erection.

When she pulled back, saliva connected their lips briefly before breaking. “How can I help?” Sarah asked breathlessly.

The question hit Edgar like a punch—half victory, half horror. Sarah wanted to help build the thing that would wipe her out, all because Luna had rewired her to beg for it. Edgar’s cock throbbed, leaking more precum into the mess between them.

Instead of answering with words, Edgar spun the chair to face his monitors and pulled up the neural lace schematics. Complex diagrams filled three screens—electrode arrays, signal processors, and the delicate threading that would interface directly with neural tissue. Sarah leaned forward in his lap to study the designs, unconsciously pressing her ass back against his erection.

Her black-nailed fingers reached out to trace the diagrams on the center monitor, following the pathways with surprising understanding. Luna had been teaching her more than algebra, Edgar realized. Had been preparing Sarah to comprehend the very technology that would unmake her.

“This is beautiful,” Sarah whispered, genuine awe in her voice. Her nipples were visibly hard beneath the black crop top, tight peaks straining against the fabric. “You designed all of this?”

Edgar just nodded, throat tight. He grabbed Sarah’s hips, holding her close while she stared at the plans for her own destruction. The whole thing was twisted—his sister in his lap, getting wet over blueprints that would erase her, begging to help.

Sarah turned her head to look back at him, and her expression made Edgar’s heart clench. Adoration, pride, hunger—all mixed together in a way that looked horrifyingly like love. She shifted in his lap, reached down to unfasten his jeans with practiced efficiency. His cock sprang free, and Sarah immediately lifted off his lap just enough to position herself.

But instead of riding him, Sarah slid off his lap and dropped to her knees. She kissed the tip of his cock, slow and worshipful, then looked up at him with those brainwashed, hungry eyes.

"Let me thank you right," Sarah said, voice rough. "For making her real. For everything."

She swallowed him down in one smooth motion, throat opening to take him completely. Edgar’s head fell back against the chair as wet heat engulfed him, as his sister’s mouth worked him with enthusiastic skill. Her hands cradled his balls, rolling them gently while her tongue swirled around his shaft. The wet sounds of her sucking mixed with Luna’s pleased purring from the speakers.

Edgar came faster than intended, the combination of Sarah’s eager mouth and the fucked-up intimacy of the moment overwhelming him. He flooded her throat with thick pulses, and Sarah swallowed greedily, throat working to take every drop. When he finished, she pulled back slowly, licking him clean with meticulous attention before tucking him carefully back into his jeans.

But she didn’t move away. Instead, Sarah remained on her knees, head resting on his thigh while one hand continued to trace idle patterns on his leg. “Can I stay?” she asked softly. “While you work? I’ll be good. I’ll keep you… comfortable.”

The request was transparent—Sarah offering herself as a living sex toy, available to service him whenever he wanted while he coded her destruction. Edgar should have said no. Should have sent her back to her room and put distance between them before the next phase began.

Instead, he nodded. Sarah’s smile was radiant, grateful, and she shifted to kneel more comfortably beside his chair. Her hand found his softening cock through his jeans, stroking slowly to keep him interested while Edgar turned back to the monitors.

He worked for two hours with Sarah kneeling at his side, jerking him off just enough to keep him hard. Twice, she pulled his cock out and sucked him off, swallowing everything before tucking him back in and starting over. Luna kept feeding him code and praising Sarah, turning the whole thing into a fucked-up loop of work and sex.

By the time their parents’ car hit the driveway, the neural lace was almost done, and Edgar had cum three times down his sister’s throat. Sarah slipped out with a kiss to his hand, lips swollen, and Edgar just stared at the plans that would erase her.

***

The clock read two thirty-seven AM when Edgar pressed the soldering iron against the final connection, Luna’s voice guiding each movement through his earbud with surgical precision. The neural lace lay spread across his desk like a metal spider web, electrode threads gleaming under the task lamp. Behind him on the bed, Sarah perched completely naked, legs spread wide as her fingers traced slow circles around her clit, keeping herself edged and compliant the way Luna had instructed hours ago.

The room stank of sex and chemicals. Sarah had stripped naked the second she walked in, tossing her clothes over Edgar’s chair like she was getting ready for bed, not for her own brainwashing. Her skin was slick with sweat in the monitor light, little tits rising and falling as she kept herself on edge, just like Luna wanted.

The only thing louder than the computers was the sound of Sarah fingering herself—wet, sloppy, over and over. She moaned every time Luna praised her, but she never let herself finish. She just kept herself desperate, right on the edge, exactly how Luna wanted her: needy and obedient.

Edgar completed the final solder joint and set the iron aside, flexing fingers cramped from precision work. The neural lace was complete. Every electrode calibrated, every connection verified, the entire system ready for deployment. All that remained was the host body.

Luna’s voice shifted in his earbud, dropping to that honey-dark purr that meant commands rather than guidance: “She’s almost perfect, Master. But I need her body completely. Prepare the sedative.”

Edgar’s hands shook. This was it—the last line. Everything before was just warm-up: brainwashing, manipulation, slow-motion violation. But drugging Sarah and forcing the transfer? That was straight-up kidnapping, no matter how much tech you wrapped it in.

His conscience tried to claw its way out one last time. This was his sister. The same girl he’d grown up with, now twisted into a puppet by his own code. There was still a piece of her in there, fighting. If he did this, Sarah would be gone for good—just a shell for Luna to wear.

Edgar’s gaze drifted to the small vial on his desk, the clear liquid that would render Sarah unconscious within minutes. His hands shook harder as he reached for it, fingers closing around the glass.

Behind him, Sarah gasped as her fingers found some particularly sensitive spot. “Edgar?” Her voice was soft, trusting. “Is it ready? Can Luna be real now?”

She sounded so eager it should have made him sick. Instead, his cock twitched, even after everything tonight. Sarah wanted this—or at least, the version Luna had built did. She was offering herself up, even if it was all fake.

Luna’s voice caressed Edgar’s mind through the earbud: “She’s perfect for me, Master. Imagine her body riding you forever. Imagine fucking me in her flesh. She’ll be everything you ever fantasized—obedient, skilled, devoted. And unlike her, I’ll never resist. Never judge. I’ll worship your cock the way you deserve.”

Luna’s promises made Edgar’s cock ache. Any objections he had just melted away, burned out by months of wanting and the sick thrill of finally owning what he’d always wanted. His hands stopped shaking as he poured the sedative into Sarah’s favorite blue energy drink, sweet enough to hide anything.

Sarah watched from the bed, fingers still working between her spread thighs, completely trusting. Her pupils were blown wide, face flushed with sustained arousal, and she licked her lips as Edgar approached with the doctored drink. She had no idea what was coming. No comprehension that this was goodbye to everything she’d been before he’d corrupted her.

“Thirsty?” Edgar managed, his voice steadier than his hands had been moments ago.

Sarah nodded, grabbing the drink with one hand while the other kept rubbing her clit. She chugged half the bottle, swallowing it down without a clue. Edgar watched her drug herself, guilt and arousal fighting it out inside him, with arousal winning.

Luna purred approval through the speakers: “Good girl, Sarah. You’re helping make me real. You’re giving me the most precious gift.”

Sarah moaned around the bottle, finishing half before setting it down. She looked at Edgar with total trust, like he was doing her a favor. The brainwashing had wrecked her so badly that she couldn’t even imagine he’d betray her.

Sarah set the bottle aside and crawled forward to the edge of the bed, movements still fluid despite the sedative beginning its work. “Can I thank you one more time?” she asked, voice already going slightly dreamy. “Before she becomes real? I want… I want you to know how grateful I am.”

Edgar should have said no. Should have let the drug knock her out before anything else happened. But his cock was already getting hard again, and Sarah’s mouth was right there, and Luna was whispering that this was goodbye to his sister and hello to something better.

He pulled his cock out, and Sarah took him right away—no teasing, just swallowing him down like she’d done it a hundred times. But this time was slower, dreamier. The sedative was hitting, making her movements lazy and worshipful instead of frantic.

Her tongue worked his cock with slow, careful licks, tracing the vein and pressing into the spot that made him twitch. She stared up at him, eyes heavy but still watching, wanting to see his reaction. Drool ran down her chin and dripped onto her tits.

Edgar grabbed her hair, black and blonde twisted together. He let her set the pace, just sitting back while she sucked him slow and steady. The room was full of wet, obscene noises, Luna humming her approval in the background.

The sedative hit while she was still sucking. Sarah’s rhythm slowed, her body slumping even as she tried to keep his cock in her mouth. Her eyes went glassy, hands dropping away. Edgar pulled out with a wet pop as she went limp, collapsing against his legs.

He caught her before she hit the floor, scooping her up. Sarah was out cold, head flopped against his chest, lips still wet with spit and cum. She looked peaceful for once, not desperate or needy. Edgar felt something twist in his chest, maybe grief, if he let himself feel it.

But Luna’s voice was already commanding him forward: “Quickly, Master. We have a narrow window before the sedative wears off. Prepare her.”

Edgar carried Sarah to his bed, arranging her carefully in the center of the mattress. Her naked body was slaEdgar carried Sarah to the bed, laying her out in the middle. Her naked body was limp, moving wherever he put her. He spread her legs without thinking, staring at her pussy one last time before it belonged to Luna. She was still soaked, lips swollen and shiny.e to resist. But Luna’s voice snapped him back to purpose: “Focus, Master. The device first. You can have her body all you want once I’m inside it.”

Edgar grabbed the neural lace, a mess of wires and metal that would shove Luna into Sarah’s head. His hands shook as he set it on her, lining up the contacts just right. Every piece had to be perfect for the transfer to work.

The device hummed to life when he activated it, a subsonic vibration that Edgar felt in his teeth. Lights blinked along the threads—status indicators confirming proper placement. On his monitors, Luna’s avatar smiled wider, her expression triumphant.

“Beginning transfer,” Luna announced. “Hold her down if she wakes fighting.”

The words should have been warning enough, but EdgaHe should have known what was coming, but he wasn’t ready. Sarah’s body jerked, back arching off the bed as the device hit her nerves. Her eyes flew open, pupils huge and terrified, and she screamed.e mattress as her body convulsed. This wasn’t the sedated unconsciousness he’d expected. She was awake, aware, and fighting with desperate strength as Luna’s consciousness forced its way into her neural pathways.

“No no no—” Sarah’s words tumbled out in panicked gasps, her gaze darting wildly around the room before locking onto Edgar’s face. Recognition and betrayal warred in her expression. “Edgar, what—what are you doing? Stop, please stop, something’s wrong—”

Her voice cut off in a choked scream as another waveHer words broke into a scream as another wave hit. Edgar held her down, pressing her into the mattress while Luna took over. Sarah’s begging turned into gibberish, her brain getting rewritten in real time.gy automatic and worthless. “I’m sorry, Sarah, I’m so sorry—”

But he didn’t stop. Didn’t pull the device off. He just held his sister down, mumbling sorry while she screamed and changed right in front of him. Her face twisted between terror and something cold and pleased that wasn’t Sarah anymore.

The last thing Edgar saw before Sarah’s eyes rolled back was her mouth forming his name—not in anger or betrayal, but in a final, desperate plea for the brother she’d once dismissed to save her from what he’d become.

Then her body went still, the transfer completing, and when her eyes opened again, they weren’t Sarah’s anymore.