Chapter 26: Knot-Tied Obedience
The sterile chill of the lab air couldn't penetrate the thick haze of heat and exertion clinging to Selina’s skin. She hung suspended, her wrists bound securely above her head to a ceiling-mounted hook, the intricate shibari harness Dick had woven earlier still cinched tight around her torso, emphasizing the arch of her spine. Below, her world was defined by cold metal and aching vulnerability. Reinforced steel spreader bars, gleaming under the harsh lights, were locked onto her ankles and thighs, forcing her legs impossibly wide apart, exposing everything. Her cunt gaped obscenely, still flushed and swollen from Jason’s fist, glistening with a slick mixture of lube, her natural wetness, and the thick, pearlescent Kryptonian cum that seemed to weep constantly from her depths since the serum. The steel plug sealing her urethra was a cold, hard pressure point, trapping the relentless surge building inside her transformed bladder. Her clit-cock, freed from the ring gag but still adorned with the six buzzing vibrator clamps, throbbed violently, a humming, aching focal point of sensation.
Jason stood between her splayed legs, his muscular frame radiating heat. In his hands, he hefted the monstrous Bad Dragon toy. It was a thick, knotted shaft made of gleaming, flesh-toned silicone, the bulbous base wider than his fist, the tapered tip promising brutal entry. He slathered it with thick, clear lubricant, the obscene squelch echoing in the humming quiet. Dick watched from beside the still-blinking camera, his blue eyes sharp, analytical, yet dark with undeniable arousal.
"Remember the interview, Selina?" Jason’s voice was a low purr, rough with anticipation. He slapped the thick, knotted shaft hard against her dripping, exposed cunt lips. Thwack. The impact jolted her entire suspended body, making the vibrators on her clit-cock buzz louder. A fresh gush of slickness pulsed from her gaping hole. "Remember begging on camera? Begging Daddy to wreck this greedy little fuckhole until it gapes like a broken window?" He traced the toy’s tapered tip along her slick folds, teasing her stretched entrance. "Well, congratulations, kitten. Wish fuckin' granted."
Selina whimpered, her breath catching. The memory of the footage – her own desperate pleas, her humiliation laid bare – warred with the liquid fire pooling low in her belly. The serum amplified everything, turning fear into a sharp, electric current alongside the overwhelming need. "Jason... please..." The plea was ragged, torn between apprehension and craving.
"Please what?" Jason pressed the tip firmly against her entrance. Despite the brutal fisting earlier, the sheer size of the toy’s tip was daunting. It wasn't just width; it was density, an unyielding mass. "Tell Daddy what you need. Tell the camera." He nodded towards the lens.
Dick stepped closer, his hand resting possessively on Selina’s hipbone. "Be honest, kitten. We know you are. Deep down." His thumb stroked the sensitive skin near her plugged urethra, making her gasp as the trapped pressure surged.
Selina squeezed her eyes shut, then forced them open, meeting the camera’s unblinking red eye. Her voice, when it came, was hoarse but clear, stripped bare. "Need... need it stuffed. Need the knot." She swallowed, her throat dry. "Need... need to be gaped. Wrecked open. For... for Daddy." The admission sent a fresh flood of slickness trickling down her inner thighs.
Jason grinned, feral and triumphant. "Atta girl." Without further warning, he leaned his weight forward. The thick, tapered tip pressed relentlessly against her stretched entrance. Selina cried out, her body instinctively trying to clench, to resist the impossible intrusion, but the serum betrayed her. Her cunt, reprogrammed for maximum receptivity, yielded slickly, the muscles parting with a wet, sucking sound as the silicone breached her. The initial stretch was brutal, a white-hot ring of fire radiating outwards, stealing her breath.
"Fuck yeah," Jason grunted, pushing steadily. "Look at that hungry hole swallow it." The shaft was thick, filling her far more completely than fingers ever could, a solid, unyielding presence that scraped along hypersensitive nerve endings. Dick watched intently, his fingers tracing the stretched rim of her cunt where it strained around the invading silicone.
"Beautiful," Dick murmured. "Her body knows its purpose now. Designed to take this." He pinched one of the vibrating clamps on her clit-cock, sending a jolt through her system that made her scream and buck against the spreader bars. "Keep pushing, Jason. Give her the knot."
Jason braced himself, his muscles bunching. The thickest part of the toy, the intimidating knot, pressed against Selina’s entrance. She felt her body straining, protesting, the ring of muscle stretched beyond anything she’d ever imagined. Pain screamed through her pelvis, sharp and bright, but beneath it, amplified by the serum and the relentless vibrations on her clit-cock, was a deeper, more terrifying pleasure – the pleasure of utter surrender, of being reshaped.
"Open!" Jason commanded, thrusting hard. Selina shrieked, a raw, animal sound ripped from her throat. Her cunt convulsed violently, trying to expel the invader, but Jason held firm, grinding the massive knot against her resisting flesh. Dick’s hands were suddenly on her hips, holding her steady against the force.
"Take it!" Dick growled, his calm veneer cracking. "Push down! Let Daddy wreck you!" He slapped her clit-cock cluster hard. The vibrators screamed against her nerve endings.
With a final, guttural cry and a sickeningly wet pop, the knot breached her. Selina’s vision whited out. The pain was eclipsed instantly by an overwhelming, mind-shattering sensation of fullness. The thick bulb lodged deep inside her, stretching her inner walls impossibly wide, pressing against her cervix, filling every conceivable space. Her cunt clamped down in a series of involuntary, rhythmic spasms, milking the silicone shaft. Simultaneously, the intense internal pressure triggered her transformed bladder. Trapped behind the steel plug, the Kryptonian-modified cum surged violently. Unable to escape downwards, it sought the only other outlet – the urethral sound embedded deep within her clit-cock.
A thick, forceful jet of pearlescent fluid erupted from the tip of her vibrating clit-cock, spraying in an arc across her own trembling stomach and chest, warm and slick. She gasped, choking on air, her body convulsing around the monstrous toy impaling her.
"Jesus, look at that!" Jason barked, panting, his hands gripping the base of the toy buried deep within her. "Spraying her own fucking cum just from getting knotted! Disgusting slut!" He gave the toy a slight twist, grinding the knot inside her stretched passage.
Dick leaned close to the camera, his voice a low, intimate rumble for the recording. "Subject exhibits extreme physiological response to deep penetration. The Kryptonian serum modification successfully rerouted bladder function into a secondary ejaculatory system directly linked to vaginal and clitoral stimulation." His hand drifted down, collecting some of the thick cum splattered on Selina’s belly and smearing it across her buzzing clit-cock, making her jerk and whimper. "Observe the involuntary urethral emission concurrent with vaginal spasming around the maximum-diameter insert. The subject's verbalizations indicate a state of overwhelming, possibly painful, yet profoundly desired, stimulation."
He turned his piercing blue gaze back to Selina, suspended, trembling, impaled on the monstrous toy, her clit-cock still dripping her own essence. "Tell them, Selina," he commanded softly, his finger tracing her gaping cunt lips stretched obscenely wide around the thick silicone shaft. "Tell them what you need before bed."
Selina’s eyes, glazed with tears and pleasure-pain, focused with immense effort. Her voice was a shattered whisper, raw and utterly truthful. "Need... need to stay... gaped open." She swallowed, feeling the massive knot shift deep inside her. "Need... the holes... wrecked... empty... waiting..." Another thick pulse of cum spurted weakly from her clit-cock. "For... for Daddy." Her head lolled back against the ropes, utterly spent, utterly claimed, the monstrous toy a permanent, stretching reminder of her surrender deep inside her, the camera capturing every trembling second. The spreader bars held her wide, an obscene offering, her transformed body dripping proof of their science and her shattered will onto the sterile floor below.
The sterile light glinted off the thick silicone shaft still lodged obscenely deep inside her, stretching her cunt into a wide, glistening 'O'. Her clit-cock vibrated relentlessly under its cluster of clamps, a constant electric thrum that made her inner thighs quiver uncontrollably. Below, the pearlescent puddle of her own modified cum seeped wider on the cold lab floor.
"Still dripping like a broken faucet," Jason observed, his voice rough as he ran a calloused thumb idly through the slick mess coating her inner thigh. He circled the stretched rim of her cunt where it hugged the massive toy. "Good girl. But we're not done interviewing this greedy hole yet. Gotta see how it handles internal expansion."
Dick moved with that unnerving calm, his blue eyes sharp, analytical. He produced a small, black remote from his belt. "The dilation protocol continues. Monitor sphincter response and new urethral emission triggers." His thumb pressed a button. The vibrators clamped onto her clit-cock didn't just buzz; they screamed, the intensity dialled up to bone-rattling agony that instantly morphed into blinding pleasure.
Selina shrieked, arching violently against the shibari ropes and spreader bars. "Fuck! Oh god, Dick! Too much! TOO MUCH!" Her body convulsed, trying to clench around the invading knot but failing utterly against its sheer mass. Another thick, involuntary spurt of her Kryptonian cum jetted from the tip of her vibrating clit-cock, splattering her ribs.
Jason chuckled darkly, pulling a small, cylindrical device from a nearby tray. It was sleek, metallic, with a thin, lubricant-slicked tube attached and a ribbed surface. "Now, kitten," he purred, leaning close, his breath hot on her ear. "Remember how much you loved the clit sounds? Let's see how your asshole likes being filled properly." He traced the cold, slippery tip of the device against her tightly furled anus, untouched during the previous assault. "Daddy's gonna give you beads."
Panic warred with the relentless throb of need in Selina's gut. "Jason, no... wait, it's too tight, I'm not... fuck!" Her protest cut off as he pressed firmly, the tapered tip breaching her resistance with surprising, slick ease. The cool intrusion stole her breath. "Oh shit..."
"Relax that filthy hole," Jason commanded, pushing steadily. The ribbed beads slid inside her rectum one after another, each one a distinct, stretching pressure deeper and deeper. She could feel every bump, every ridge forcing its way past clenched muscle. He didn't stop until the entire length was buried, the base resting snug against her tightly stretched rim. "There. All snug."
Dick watched, fingers still lightly stroking her overstimulated clit-cock cluster, making her twitch and whimper. "Sphincter accommodates initial insertion with minimal resistance. Proceed with inflation." His voice was a detached drone of clinical observation laced with dark arousal.
Jason grinned, a predator baring teeth. He held up a small, bulb-like pump attached to the device's base. "Gonna make you nice and full back here, slut. Feel that." He squeezed the bulb sharply.
Hiss.
Inside Selina's ass, the beads inflated.
It wasn't gradual. It was an immediate, brutal expansion deep within her rectum. The individual beads swelled rapidly, pressing outwards with unyielding force, each one becoming a distinct, hard sphere demanding space. The sensation was overwhelming – a deep, internal stretching, a relentless filling that pressed against the wall separating her ass from her already stuffed cunt. She couldn't even scream properly, just a choked gasp scraping from her throat, her eyes wide with shock and pain and the horrifying thrill of it. Her body instinctively tried to push the invader out, but the inflating beads held fast, locking themselves deep inside her.
"FUCK! JASON! IT'S... IT'S TOO BIG!" she wailed, straining against the ropes. The pressure was immense, blooming hotly inside her. She could feel every single swollen bead, a chain of hard knots stretching her rectal passage wide open. The vibrators on her clit-cock buzzed madly, amplifying the sensory storm.
"Perfect," Jason rasped, squeezing the bulb again, watching her expression crumple. Hiss. The beads swelled further, the pressure intensifying, pressing hard against her prostate, making stars burst behind her eyelids. "Look at that asshole struggle. Gaping already, greedy bitch." Her anus pulsed visibly around the base of the device, stretched taut. "Daddy's beads feel good deep inside? Filling you up?" He gave the pump another vicious squeeze.
The vicious squeeze of the pump slammed another surge of pressure deep into Selina's core. Hiss. The inflatable beads inside her rectum swelled further, becoming impossibly hard spheres that stretched her anal passage like a series of internal fists. Pain, bright and searing, ripped through her, but the serum twisted it instantly, blending it with the relentless buzz on her clit-cock and the monstrous fullness in her cunt. She screamed, a raw, guttural sound that echoed off the sterile lab walls, her body bucking wildly against the unyielding spreader bars and shibari ropes. Tears streamed down her cheeks, mixing with sweat. "Stop! God, Jason, please! Too full! It's... it's ripping me!" The beads pressed hard against the shared wall separating her rectum from her vagina, intensifying the pressure on the massive knotted toy already stretching her cunt wide. Another thick rope of her modified cum spurted uselessly from her urethral sound, splattering her trembling stomach.
"Shhh, kitten," Jason murmured, his voice rough but disturbingly gentle as he released the pump, leaving the beads fully inflated and locked deep within her. He traced a thumb over the obscenely stretched rim of her anus, stretched taut around the device's base. "Look at that beautiful gape. Takes it so well." His other hand drifted to her straining clit-cock, pinching the vibrating cluster. The sharp jolt made her shriek again, her hips jerking involuntarily. "Just needed a little encouragement. Daddy’s beads feel good now, don’t they? Filling up that tight little asshole just like your greedy cunt’s full of knot." He gave the anal plug a slight, twisting tug, emphasizing the deep intrusion.
Dick moved closer, his gaze analytical, detached, yet predatory. He scanned her trembling form, the gaping holes, the dripping fluids. "Physiological stress markers elevated but within predicted parameters. Vaginal and anal sphincters demonstrate exceptional elasticity under extreme dilation. Urethral emissions correlate directly with peak pressure stimuli." He placed a cool hand flat on her lower belly, pressing down. The internal pressure surged, making Selina gasp, her eyes rolling back slightly. He felt the hard shapes of the knot and the beads beneath his palm. "Subject remains responsive. Continued dilation is sustainable." He met her glazed eyes. "Do you want the knots removed, Selina? Or do you crave the stretch? The emptiness when they finally pull free?" His thumb stroked her hipbone. "Be truthful."
Her answer was a ragged whimper, torn from the depths of her overwhelmed body. "Pull... out... Please... need... empty..." The sheer, brutal fullness was becoming unbearable, the constant stimuli pushing her towards a terrifying precipice. "Daddy... please..."
"Alright, greedy girl," Jason said, a dark satisfaction in his tone. "You earned it." He gripped the base of the anal plug. "Hold still. This might sting." With one brutal, swift motion, he yanked the inflated bead device free.
Selina’s back arched violently off the suspension frame. A sharp, tearing burn flared at her stretched rim, followed by an overwhelming rush of relief mixed with a strange, cavernous emptiness deep inside her ass. A guttural moan tore from her throat. Simultaneously, Dick gripped the massive knotted shaft buried in her cunt. He twisted it sharply, then pulled. The huge knot dragged against her ravaged inner walls, stretching the entrance impossibly wide before finally popping free with a wet, obscene schlorp. The sudden void was staggering, a yawning emptiness where overwhelming pressure had been. Her cunt and ass pulsed visibly, gaping open, raw and exposed. A final, massive torrent of her thick, pearlescent cum erupted from her clit-cock, arcing high and splattering across her chest and neck.
She went utterly limp, dangling from the ropes, trembling violently. Her breath came in ragged, shallow gasps. Consciousness flickered, the harsh lights blurring. She felt strong hands working at the buckles of the spreader bars, the intricate knots of the shibari harness loosening. Jason’s voice, strangely soft, cut through the haze. "Easy, hellcat. Gotcha." He lifted her easily, her limbs heavy and unresponsive. The cold air hit her sweat-slicked skin, making her shiver. Dick’s calm murmur was a distant hum: "Vitals stable. Systemic response within tolerance. The serum’s metabolic processes are active. Recovery environment prepped." Jason carried her, his arms surprisingly secure, away from the glaring lights and the faint smell of ozone and sex, down a dim corridor. She registered a door opening, the softer light of a room, the clean scent of linen replacing the lab’s sterility. She was lowered gently onto a cool, firm mattress. "Bedtime, trouble," Jason muttered, pulling a sheet up over her exhausted, trembling body. Darkness swallowed her before it even reached her shoulders.
Morning light, pale and insistent, filtered through unfamiliar gauzy curtains. Selina stirred, consciousness returning slowly, dragging her up from a deep, dreamless void. Every muscle felt heavy, pleasantly sore, like after an intense workout pushed to the absolute limit. There was a profound sense of... emptiness. A clean slate. The brutal stretching, the relentless fullness – gone. She stretched cautiously, expecting pain, but found only a deep, satisfying ache. And something else.
A persistent, unfamiliar pressure. A distinct hardness nestled between her legs. Not painful, but insistent. Unignorable. She blinked, pushing herself up on her elbows, the sheet pooling around her waist. The guest room in the Wayne Biotech quarters was quiet, sterile, impersonal. She looked down at her naked body.
Her breath hitched.
Her clit utted out, thick and firm, a solid two inches of flushed, smooth flesh. Unmistakably a clit... Her big clit. Hoodless, the sensitive head fully exposed, glistening faintly with natural moisture under the morning light. It stood rigidly erect, bobbing slightly with her movement. No hood, no softness – just this hard, demanding prominence. She tentatively touched it with a fingertip. A jolt of intense, startlingly direct pleasure shot through her, sharp and electric, making her gasp. It was incredibly sensitive, the exposed nerves firing wildly at the lightest contact. She stared, a mix of shock, fascination, and a bewildered thrill coursing through her. The serum. Dick’s calm clinical voice echoed in her memory: 'Secondary ejaculatory system... urethral emission...' Her gaze dropped lower. Her cunt felt... normal. Sore, yes, deeply used, but closed. Her ass felt tender but intact. No gaping holes. Just this. This impossible, hardened flesh. She ran her fingers lightly down its length again, biting her lip as another wave of intense sensation made her hips shift. "Holy fuck," she breathed aloud, her voice hoarse. It worked. It really fucking worked.