Part 2 of Nailing My Sister The Bitch (Part 1 written by JLM)

A twin brother secretly impregnates his sister again by drugging her and sabotaging her birth control, framing her boyfriend while asserting total control.

Based on a request in one of my previous stories, this is my shot at writing Part 2 of JLM’s ‘Nailing My Sister The Bitch’/2025/09/story-43281

I. The Scarred Ground: Birth, Adoption, and Resurgent Obsession

The sterile fluorescent lighting of the hospital room was a mocking spotlight on her agony.

I watched, standing near the foot of the bed, a polite mask of brotherly concern fixed over the sheer, white-hot satisfaction that was boiling in my chest. My twin, my sister, was screaming. It was a raw, guttural noise ripped from a body that was still, impossibly, small and slender despite the watermelon she was trying to push out. I didn't see the pain; I saw the consequence. Every sweat-slicked moan, every tear tracking through her tangled blonde hair, was the music of my genius. This wasn't a miracle; it was a perfect, physical receipt for the debt she owed me. I had planted the seed, and the harvest was glorious chaos.

When the tiny, furious thing was pulled into the world, a shriveled, screeching miniature of her, I felt a shudder of power so immense it made my cock tighten slightly in my jeans. That was mine. That was the proof of my unseen work, a biological mark on her life that no doctor could ever erase. She didn't look at the baby with love, only with a vacant, devastating confusion, a pure emotional wreckage I had manufactured. She was weak, cracked open, and emptied. Perfect.

The adoption was a sterile, muted affair just two days later, carried out in a hushed side office. Mom and Dad did their best to keep the shame contained, presenting a united, if strained, front. Their relief was palpable when the paperwork was signed, the physical evidence of her 'failure' handed off to strangers. They still adored their son, the one who drove the car and was now allowed to date freely, the one who was responsible. My reward was their trust, the keys to Dad’s car, and the quiet, crushing misery radiating off my twin. Her arms were empty, yes, but my life was suddenly full of opportunity.

She was damaged goods, and the best part was, she didn’t even know who had done the damage. Her body was a territory I had successfully invaded and marked. I looked at her, sunken and pale, and the possessive thrill was overwhelming. She wasn't just my twin; she was now my property, indelibly stamped with my cum, my seed, my twisted, perfect design.

Then came Liam.

He showed up two weeks after the adoption, a soft-spoken guy from her sociology class, offering kindness, quiet dinners, and an easy, gentle stability that she desperately clung to. He treated her like a person worthy of respect, worthy of softness, and that simple fact sent a brutal spike of jealousy through me. He was trespassing. He was putting his clean hands all over my fertile ground, trying to heal the damage I had so carefully inflicted. Every time I saw them together, her head resting on his shoulder, his arm draped around her, I tasted bile. She was mine. She was marked.

The time for petty revenge was over. This wasn't about getting her grounded anymore. This was about absolute, perpetual control.

Back in my room, safe from the world, I opened my phone. The folder was labeled with a simple, innocuous letter. Inside, my own personal liturgy, my daily prayer book of perversion. I zoomed in on the pink bra cups lying slack on her arms, the untouched smoothness of her pussy before I stretched her with my cock. I saw the pictures of her face, slack and oblivious, the dark shadows beneath her lashes. These were not just photos; they were blueprints for her future. She wouldn't just get knocked up again; she would be taken, broken, and forced to bear my seed again, until every bit of the girl who thought she could order me around was purged, leaving only my devoted vessel. Liam was a nuisance. I needed a bigger act, a more profound violation that would shatter her trust in her own body and leave her permanently hobbled, a mark Liam would never be able to kiss better.

II. The Poisoned Cup: Devious Sabotage

The disc of birth control pills resting in her bedside drawer was a challenge, a tiny fortress of false protection. I knew the water pill swap was genius the first time, an act of quick-witted spite, but now I required perfection. She was no longer just stupid; she was wary, and I could not risk her new doctor, or a moment of paranoia, leading her to check the pill’s.

My new masterpiece would be a ghost.

After nights dedicated to deep research, sifting through the darker, clinical corners of the internet where true deceit was discussed, I isolated the perfect medium for my forgery: lactose powder. Tasteless, odorless, and utterly inert, it was a pure, undetectable placebo. I procured a minute amount of food-grade coloring, precisely matching the faint, peachy hue of her current monophasic pills under the glare of my desk lamp, and secured a perfectly matched pill press. The subsequent creation was a painstaking, slow, meticulous act: I ground the powder, dyed it, and then pressed it into perfect little ovals, identical in size and shape to the real medication. I had crafted a perfect replica to seal a perfect lie.

The perfection of the forged pills demanded a surgical precision for the swap.

I waited until the house was utterly silent, the clock just scraping past three in the morning. I slipped into her room like a phantom, the floorboards silent beneath my weight. Her scent was still heavy on the air, mingling with the deep, unconscious breathing I could just hear from her bed. I located her pill disc in the bedside drawer, a tiny, circular fortress of pink plastic and foil, its purpose to regulate and deny life.

I carried the disc back to my desk, where my lamp was focused only on the job at hand. Using a pair of fine-tipped medical tweezers I had stolen from the bathroom cabinet, I began the delicate extraction. I didn't rip or tear; I meticulously pierced the thin foil backing of each active pill pocket and guided the real medication out. One by one, the genuine, life-denying pills were removed, their integrity maintained only until they hit the toilet bowl moments later, flushed away into the city's sewage system. Gone, replaced by nothing but my pure intent.

The forged lactose pills, identical in size, shape, and peachy hue, were waiting in a small, sterile dish. The plastic of the pill press had allowed me to create a tiny ridge on the side of each placebo, ensuring it fit snugly. Using the same tweezers, I carefully slid the lactose blanks into the empty pockets of the disc, pushing them just far enough that they rested against the foil, mimicking the position of the originals. I checked the alignment of each pill, running my thumb over the plastic cover to ensure no tell-tale bulge or imperfect fit betrayed the deceit. The replacement was flawless, the circle of false protection now entirely complete.

I snapped the disc shut and returned it to her bedside drawer, placing it in the exact orientation I had found it. The violation was intimate, cold, and absolute. She would wake up and, for the next twenty-eight days, diligently swallow a dose of inert nothing, her body ripe and waiting for the seed I would soon plant. I was not just swapping medicine; I was meticulously sealing her destiny.

Now came the final touch: the deep sleep. Her drunken stupor the first time was too unstable, too open to hazy memories. The pain of the first pregnancy had made her fragile, but also alert. I needed an unbreakable sleep.

I found a dealer on a deep web forum, paying in cryptocurrency for a concentrated, powdered sleep aid. Something beyond over-the-counter strength, something they hinted was powerful enough to subdue livestock. I had asked for the strongest thing he had. It arrived concealed in a novel, a fine, almost crystalline powder that dissolved like breath in warm liquid. I crushed it further, reducing it to the finest dust imaginable. I needed absolute compliance, a total darkness of mind.

The execution of my plan was not driven by simple chance; it was governed by my sisters internal clock. For weeks, I had tracked her progress, not with a glance, but with a cold, clinical dedication. I studied the wrappers in her trash, noting the quantity and saturation of the used tampons, combining that raw data with the knowledge of where she was supposed to be in her birth control disc, the inert, peachy lactose I knew she was dutifully swallowing every morning.

I had cross-referenced the estimated date of her natural ovulation with an online fertility app, inputting the data like a mad scientist plotting coordinates. I made a succinct note in the journal on my phone: Peak fertility. Day 42. The time for planting the second seed was not a random night of passion; it had to be the day her body was most ripe for my invasion.

The opportunity came precisely six weeks after the pill swap, perfectly aligning with my calculated day. Liam, that soft fool, canceled their Saturday date, citing a last-minute work thing. The raw despair on my twin’s face was beautiful, a perfect emotional void. She retreated immediately, sinking into a miserable funk that had Mom shaking her head in tired pity. Fate, or perhaps my divine will, had delivered her to me on the one day she was biologically guaranteed to conceive. The timing was flawless, the emotional damage was pre-set, and the trap was now fully sprung.

I waited until evening. "Rough day?" I asked, leaning casually in her doorway, the very image of a loving brother. "I was making myself a hot chocolate. Want one? The extra dark kind. It’s supposed to be calming."

She gave me a listless nod, sinking deeper into her duvet. My stomach tightened with a fierce, burning anticipation.

In the kitchen, I prepared the drink. Hers was rich, dark, and perfectly steaming. I scooped out a significant, horrifying dose of the sedative powder, dissolving it completely into her cup. I stirred it slowly, ensuring no sediment, watching the powder disappear into the sweet, comforting liquid. It was a poison hidden within a simple offering of love.

I carried the cup to her room, setting it down next to her bed. "Here, sis. Drink this. Get some deep sleep tonight. You deserve a break."

She murmured thanks, pulling herself up to sip it. I sat in the chair across the room, watching her. She took long, slow drafts, finding comfort in the warmth and sweetness. Every swallow was a plunge into the inescapable abyss I had engineered for her. My eyes gleamed with cold, magnificent anticipation. Soon, she would be completely mine again, paralyzed, oblivious, and ready to bear the mark of her brother’s hatred and desire, a mark that would leave her struggling to even stand.

III. The Final Cruelty: A Mark She Cannot Hide

After confirming that our parents were fast asleep, I returned to my sister’s room. Her breathing was deep, even, and unnervingly regular, the sound of an engine running while the driver was nowhere near the wheel. She was slumped, completely out cold, rendered a perfect, non-responsive victim by the poisoned chocolate I had so sweetly delivered. I stood over her, breathing in the scent of her, feeling the absolute, silent power this granted me. This wasn’t just a conquest; it was a punishment, a total subjugation of the person who thought she could ever stand above me.

I tore the covers from her, my hands moving with rough, possessive speed. Her thin nightshirt and panties followed, yanked away and tossed aside. Her body, pale and soft in the dim light filtering from the hallway, was already familiar to me, yet seeing it now, utterly helpless, triggered a vicious surge of lust and rage. The sex wouldn't be the nervous fumbling of the first time; it was going to be a punishing, prolonged assault, a violent act of ownership demanded by my blood. This was the moment I had calculated, the moment her peak fertility intersected with her absolute helplessness. I didn't see a twin; I saw a ripe, empty vessel waiting to be filled.

I grabbed her legs, wrenching them apart and pinning her thighs wide. My eyes drank in the sight: her pussy, still slightly swollen and dark from the recent trauma of birth, was now spread open for me, an obscene, vulnerable presentation. I nudged my hard cock against her folds, but instead of the warm, wet, eager welcome of arousal, I met only a dry, unyielding surface. Her body had not been given the grace of desire; it was tight, unresponsive, and dry.

My first attempt at entry was a futile, painful scrape. The lack of lubrication meant brute force would only damage my own cock. Rage mixed with the necessity of the moment. I shifted, dropping my head between her legs. I spread her with my fingers, my tongue finding the opening of her pussy within her folds. I began licking her slowly, deeply, from the base of her opening to the tip of her now hardening clit. I tasted her enticing, musk-like scent, the faint metallic tang of her post-partum body, and the lingering sweetness I couldn’t quite place.

After a several satisfying licks that only slightly aroused her, I pulled back, spitting a thick gob of my own saliva directly onto the head of my rigid cock, coating the shaft with my own desperate lubricant. I didn't hesitate this time, using the slippery film to finally force my way in.

I slid into her, savoring every fraction of an inch. The entry was agonizingly slow, a burning friction that would have made her scream if she were conscious. Despite the recent birth, her tightness was still profoundly satisfying, a velvet grip that squeezed my cock with a desperate, unfamiliar tension. The first push drove me fully inside, and I instantly felt the crown of my cockhead slam against her firm cervix. I buried myself all the way to the hilt, feeling myself push beyond that point, deep into her fornix, the tight nook just past her cervix. Her unaroused body simply hadn't adjusted to accommodate a cock, and I was using that unyielding resistance to drive my semen exactly where it needed to be.

My focus narrowed to a singular point of absolute biological malice. The orgasm hit like a shockwave, a savage, jolting pleasure that tightened my balls until they ached and made my cock twitch desperately. I unloaded a torrent of cum within my sister, spurt after satisfying spurt of pent-up fluid. I drove the thick, burning volume deep inside her, ramming myself against the posterior wall to ensure the flood of semen pooled perfectly around her cervix, giving my potent sperm the best chance possible to find the egg I knew was waiting. I didn't pull back even an inch. I paused, letting the visceral, undeniable waves of pure, possessive ownership wash over me as my cock, already swelling hard again, remained buried within her tight, internal flesh.

I began my second set of thrusts, a brutal, rapid-fire violation designed purely to plant the seed deeper. My hips slammed against her again and again, each push punctuated by a low, feral grunt torn from my own throat. I was driving my cock into my sister with a frenzied, animal urgency, determined to leave no doubt as to the paternity of the child she would soon carry.

The second orgasm was a longer, more agonizing surge of pure, violent triumph. I felt my muscles shake, not from pleasure alone, but from the sheer force of my violation. My vision swam with the intensity of it all, a dizzying, powerful realization of total control. I buried myself completely, emptying my second, massive load into her dark recess, holding myself rigid and deep inside her while the semen pulsed out, mixing with the first deposit, flooding her canal. I was seeding the earth, knowing I had sealed her fate for a second time with a biological certainty that no doctor, no Liam, and no plastic disc of fake pills could ever undo. I owned her future.
Still hard, still pulsing with residual lust and the pure, ecstatic thrill of my cruelty, I wasn't finished. The pussy was for planting life; the rest of her body was for savage degradation. I turned to more devious pleasures. Her soft body, having just been filled twice with my seed, was nothing but dead weight as I tossed her roughly to the floor beside the bed, letting her land on her hands and knees in a clumsy, slack sprawl.

I looked down at her twin, pale cheeks, drawn tight and closed over the puckered prize I intended to conquer. I knew the intense, forbidden pleasure that lay in claiming that tight, untouched ass.

I leaned down and spat again, a thick, ropy wad of my own saliva, coating the tip and shaft of my rigid cock with a fresh layer of crude lubrication. I drove forward, nudging the head of my prick against her unyielding sphincter. It was so impossibly tight that it was an absolute struggle to fit. The flesh was cold, dense, and offered a fierce, unforgiving resistance.

I pushed, putting my weight behind the motion, forcing the head of my cock past the barrier. It was a slow, burning violation, inch by agonizing inch, applying punishing, stretching pressure. A pathetic, strangled gasp and gurgle escaped her lips as her involuntary systems reacted to the invasion, the sickening sound of her body fighting back even while her mind slept.

The feeling was spectacular, so incredibly tight and hot, a scorching, vacuum-like grasp that made her pussy feel loose and cavernous by comparison. I ground my hips until I finally felt the thick root of my cock force the passage wide, achieving full penetration of her virgin ass. I didn't last long; the friction was too intense, the pleasure too sharp, too violently exquisite. I exploded in a final, shuddering ejaculation, pumping the rest of my load, thick and desperate, deep within her rectum.

I pulled out with a slow, sucking pop, the sound sharp and final in the quiet room. The sight of my cock was its own crude trophy: my still rigid, conquering prick was dark, slick with her internal fluids, and disgustingly smeared with a noticeable streak of feces, the undeniable proof of the final violation.

I left her naked and sprawled on the cold floor for a moment, savoring the tableau of my absolute triumph. Then, I bent down, becoming the clinical architect of her denial once more. I wiped her roughly with a wadded handful of tissue, attempting to clean the worst of the sticky mess from her asshole and thighs before I meticulously dressed her. I pulled the nightshirt over her shoulders, covering her limbs, and slipped the panties back on, hiding the physical evidence of the triple violation. My job complete, I left her body right there on the cold, hard floor, the perfect, injured victim of a 'bad fall', and went straight to the bathroom to scrub her filth from my cock.

IV. The Second Harvest: The Perfect Deception

The first notification was not a sound of waking, but a low, involuntary whimper that quickly escalated into a strangled cry of pure agony. I was instantly in her doorway, the perfect picture of horrified surprise. She was trying to sit up, but her hips looked seized, locked against the cold floor where I had left her. Her face was already pinched and slick with pain.

"What in the fuck happened to you?" I asked, my voice pitched perfectly between alarm and concern, my guts churning with delicious, cold triumph.

She struggled to stand. When she finally managed to pull herself upright, the pain was immediate and absolute. She clutched her hands to her stomach, which was wrenching with deep pain in her lower abdomen, her lower back throbbed with a searing ache from the trauma I had inflicted, and her inner thighs screamed when she tried to bear weight. Worse, her asshole felt like it was on fire, a radiating, pulsing heat that made every muscle tense. She was immediately forced into a deep, noticeable limp that made every single step a desperate torture.

"I don't know," she choked out, leaning heavily on the dresser, her breathing shallow and ragged. "It feels like I've been hit by a truck. I must have... I must have thrashed out of bed and hit the floor catastrophically in my sleep. I didn't even notice, I was out cold..."

"You must have, sis," I confirmed, stepping forward and placing my arm around her, a predatory embrace. "You must have thrashed yourself out of bed in your sleep and slammed down hard. Look at you. You can barely stand." The lie was sealed, disguised by her own crippling, self-inflicted pain.

She was in too much physical pain, too foggy from the residual sedative, and too psychologically fragile to question my narrative. Her body was betraying her, and my voice was the only thing offering a rational explanation. She was physically damaged, psychologically vulnerable, and utterly convinced she was the victim of a bad night’s sleep. I reveled in her hobbled gait over the next few days, watching the deep, painful ache in her limp with a satisfaction that bordered on ecstatic reverence. That limp was my masterpiece, a visible, daily reminder of the power I held over her.

Then, weeks later, the familiar sickness returned.

It started with a queasiness she initially dismissed, followed by the sickening realization of a missed period, then a second. The crushing confirmation from the clinic, she was pregnant again, sent her into a spiral of hysterical desperate denial.

"How, how could this happen?" she sobbed, burying her face in a pillow. "I was so careful! Liam and I always used condoms, always! And I took my pill every morning, I didn’t miss one! It can’t be happening again!"

The perfect scapegoat was waiting. She was hysterical, a mix of shame and disbelief, but the pieces of my trap fit together flawlessly. She thought she was scrupulous. She thought her birth control was unfailingly reliable. The logical conclusion, the only possibility in her fractured reality, was that Liam must have been careless, that the condom failed, or that her body was simply defective, an incubator that refused to be regulated.

Mom and Dad, seeing her genuine panic and recalling her caution after the first disaster, focused their rage and disappointment entirely on Liam, the second outsider who had supposedly "ruined" their daughter. They demanded she cut ties, while I stood by, the responsible, good son. I drove her to the follow-up appointments. I was there with my hand resting comfortingly on her shoulder as she vomited into a public restroom toilet.

I had not only seeded her twice, but I had successfully destroyed her love life and identity, forcing her back into the narrow orbit of my family's control. I was utterly invisible, the true, victorious architect of her ruin, watching the narrative of the scapegoat unfold exactly as I had planned. The second seed was planted, the physical damage inflicted, and her fate was sealed. She was mine, forever marked by the pain she couldn't explain and the children she couldn't prevent.