Cover of All the Curves of the Rainbow

All the Curves of the Rainbow

Read the story

24 chapters · 67749 words · Read 0 times

A guy shows up to his girlfriend's birthday party with her friends. His girlfriend and her friends are all bbw influencers known for their huge boobs and bigger butts. The party is orchestrated as a kink event. One guy for all the girls.

Chapter 13: The Zurich Experiment

Sleep, when it finally came, was a black and airless thing. He awoke not to the gentle pressure of limbs tangled with his, but to an empty bed. The grey linen sheets were cool where their bodies had been. The only sound was the hum of central air, a sterile white noise that felt alien after the organic heartbeat of the suite.

He was clean. Someone had washed him while he slept. The memory-fog of the previous hours—the platform, the bed—clung to him like a film, but his skin smelled of generic, unscented soap. He sat up. The red lines on his wrists and ankles were faded, just faint ghosts.

A neatly folded stack of clothes sat on a chair by the door: soft, grey joggers and a simple white t-shirt. His size. He dressed slowly, his muscles protesting with a deep, satisfying ache. He felt hollowed out, but clear. The panic was gone, replaced by a numb, waiting readiness.

The main room of the suite was empty. The black platform hung dormant, its chains still. The trough beneath it was spotless. It looked like a modern art installation, meaningless without context.

A note was stuck to the stainless steel fridge with a magnet shaped like a pelvis.

Gone for fuel. Kitchen’s stocked. Be back by 3. Don’t answer the door for anyone. - H

The handwriting was bubbly, cheerful. He opened the fridge. It was full of green juices, plastic containers of pre-cut fruit, and several bottles of something dark and thick, labeled only with a handwritten ‘Z’ on the cap. Zurich. He closed the door.

The hours passed with a surreal slowness. He explored the suite cautiously. It was a duplex. The upstairs held two more bedrooms and a sleek office with three identical computer setups, large ring lights folded away in a corner. Influencer central. On the desk of the central station, Harmony’s, a small framed photo showed the two of them at a county fair, months ago, before any of this. He was holding a giant stuffed bear, looking flushed and happy. She was kissing his cheek. It looked normal. It felt like a artifact from a dead civilization.

At precisely 2:58 PM, he heard the key in the lock.

They bustled in, arms full of shopping bags from high-end grocery stores and what looked like a medical supply outlet. Their energy was different today—focused, anticipatory, crackling with a shared secret.

“You’re up!” Harmony beamed, dropping her bags on the kitchen island. She came over and kissed him, a deep, probing kiss that tasted of expensive coffee. “How do you feel?”

“Empty,” he said, and it was the truth.

“Perfect,” Mel said, unpacking a bag with clinical efficiency. “That’s the ideal baseline.”

Serenity was checking her phone, a small smile on her face. “Klaus is ready. He’s just finishing the calibration.”

“Who’s Klaus?” Kevin asked. The name sounded cold, Germanic, utterly out of place.

“Our facilitator,” Harmony said, pulling out bottles of water and a series of unmarked plastic containers filled with a viscous, honey-colored gel. “The engineer. You’ll love him. He’s a genius.”

“What’s he facilitating?”

“The next phase,” Mel said, not looking up from her organizing. “The bonding was spiritual, psychological. What comes next is… physiological. Optimization.”

A low chill traced his spine. “Optimization for what?”

Harmony stopped what she was doing and looked at him, her head tilted. “For your purpose, Kevin. For being ours. The vessel has been consecrated. Now we see what it can really hold.”

At 3:30 PM, another key turned in the lock. The man who entered was not what Kevin expected. He was slight, maybe in his late forties, with thinning blond hair swept back, and wore thin wire-framed glasses and a pristine lab coat over dark jeans. He carried a hardened aluminum briefcase.

“Ladies,” he said, his voice a soft, mid-Atlantic murmur. “The subject is prepared?”

“He’s right here, Klaus,” Harmony said, gesturing. “And he’s not a ‘subject.’ He’s our husband.”

Klaus’s pale blue eyes flicked to Kevin, appraising him with a dispassionate thoroughness that felt more invasive than any lustful stare. “Of course. My apologies. The beneficiary, then. Baseline readings?”

“Cleansed, fasted, hydrated with standard electrolytes since recovery,” Mel reported, as if reading from a chart. “High compliance. Low affective resistance.”

“Excellent.” Klaus set his briefcase on the island with a sharp click. He opened it. Inside, nestled in custom foam, were two rows of large, sealed vials filled with a deep, syrupy purple liquid, and a sleek, black electronic tablet. He powered on the tablet, his fingers moving swiftly. “We’ll begin with the primer. The custom blend is based on the samples you provided. High-fiber matrix, non-digestible gel-based bulking agents, with a proprietary probiotic catalyst to accelerate colonic fermentation. The goal is maximum volume with a… dramatic expulsion profile.”

He spoke like a sommelier describing a rare vintage. Kevin just stared at the purple vials. They looked like something from a comic book.

“What is it?” Kevin asked, his voice dry.

“A dietary supplement,” Klaus said, not looking up from his tablet. “Designed to expand your intestinal capacity and modify output. Think of it as a… soil amendment. For the internal garden.”

Harmony took one of the vials, holding it up to the light. It glowed unnaturally. “It’s gorgeous. How long?”

“Onset is approximately ninety minutes after ingestion. Peak volumetric expansion occurs between three to four hours. The event itself should be quite… substantive.” Klaus finally looked at Kevin. “You will consume one vial now. The ladies will consume a different formulation to synchronize with your cycle. Then, we will proceed to the containment stage.”

“Containment?”

From a larger bag by the door, Serenity withdrew something and laid it on the black lacquered platform. It wasn’t a diaper in any conventional sense. It was a full-bodied suit, constructed of a thick, crinkly white plastic, with integrated, heavy-duty absorbent padding concentrated in the seat and front. It had full-length legs and arms, and a high back that would come up to his neck. Along the seams were heavy, industrial zippers and a complex series of adjustable straps. At the crotch, a large, funnel-like plastic aperture led to an internal collection pouch.

“Custom silicone-gasket seals at the neck, wrists, and ankles,” Klaus narrated, approaching the platform. “Total encapsulation. The external shell is impermeable. The internal wicking layer will draw moisture away from the skin. The waste will be contained in the integral collection chamber, here.” He tapped the pouch. “You will be buried alive in their output. A living, breathing sarcophagus. It’s quite elegant.”

The room was silent except for the hum of the fridge. Kevin looked from the monstrous suit to the vial in Harmony’s hand, to their eager, waiting faces.

“This is insane,” he whispered.

“It’s the next step,” Mel said, her tone reasonable, almost gentle. “The woods were about them giving to you. This is about you holding for them. Containing it. Being the absolute receptacle. It’s a higher form of worship.”

“I don’t want to worship,” he said, but the words had no force.

“You do,” Harmony said, walking over to him. She unscrewed the cap from the vial. It smelled sickly sweet, like overripe berries and chemicals. “You asked for this. In every way you could. This is just… a more efficient answer.” She held it to his lips. “Drink, husband. For us.”

His eyes slid to Serenity, who was running her hand over the plastic suit with something like reverence. To Mel, who was watching him with sharp, analytic interest. To Klaus, who was typing notes, already bored.

He opened his mouth.

The syrup was thick, cloying, and shockingly cold. It coated his tongue and throat, leaving a medicinal aftertaste. He drank it all. Harmony beamed and kissed his forehead.

“Good,” Klaus said. “Now, ladies, your blend.” He handed them vials of a milky green liquid. They drank them without hesitation, like athletes taking a vitamin shot.

For the next ninety minutes, nothing happened. They ordered sushi. They watched a reality TV show on the large screen. Klaus worked on his tablet in a corner. It was terrifyingly normal. Kevin sat with them, the cold weight of the syrup sitting in his gut.

Then, the first cramp hit.

It was a deep, internal pressure, a fist slowly clenching in his lower abdomen. He shifted in his seat.

“Starting?” Mel asked, glancing at her watch.

He nodded, unable to speak. The pressure wasn’t painful, yet. It was immense, a balloon inflating in a space that had no room for it.

Klaus looked up. “Right on schedule. We should begin encapsulation. The expulsion, when it comes, will be rapid and voluminous.”

They led him to the platform. The plastic suit crinkled loudly with every movement. They helped him step into the legs, pull it up over his torso. The material was cool and slick against his skin. Serenity zipped up the back, her fingers methodical. Klaus checked each silicone seal, tugging at the neck, the wrists, the ankles, ensuring a perfect fit. He fastened the complex array of straps across Kevin’s chest and back, pulling them tight until the suit was snug, immovable. Kevin felt like he was being shrink-wrapped.

The final step was the crotch aperture. Klaus aligned it with a detached professionalism. The plastic was cold. The funnel led down into darkness, into the waiting pouch.

“The suit is now a closed system,” Klaus announced. “All output will be directed and contained. You may experience disorientation. That is normal. You are relying on the suit’s environment now.”

They laid him back on the platform, but didn’t cuff him. There was no need. The suit itself was the restraint. He was a giant, plastic-wrapped infant, utterly helpless.

Harmony, Mel, and Serenity stood around him, their hands on his encased arms and legs. Their stomachs, he noticed, were subtly distended, firm.

“It’s time for us, too,” Harmony said, her voice soft with excitement. “We’ll be right here with you.”

The cramps in his own gut were coming faster now, waves of profound, urgent pressure. He groaned, pushing down against the inevitable. But the suit held him, forcing him to simply endure the expanding feeling.

Then Harmony’s face tightened. She let out a soft, shuddering sigh. A low, prolonged rumble echoed from within her, a sound of deep internal shifting. It went on for several seconds. He felt her body heat through the plastic on his arm. She bit her lip, her eyes closing in concentration, and then relaxed, a blissful smile spreading across her face.

“Oh, that’s the catalyst,” she breathed. “It’s… moving.”

Mel was next. She didn’t sigh. She grinned, bracing her hands on her knees. A louder, wetter, more insistent series of gurgles and pushes filled the quiet room, ending with a solid, weighty sound of release. She let out a contented “Ahhh,” straightening up. “Yep. That’s the high-

fiber blend,” she said, wiping a sheen of sweat from her brow. “It’s ready.”

The smell reached Kevin first. It wasn’t the foul stench he’d braced for. Through the suit’s filter and the hanging air, it was earthy, profoundly organic, and mixed with the residual berry-sweetness of the primer they’d all drunk. It should have revolted him. His brain knew what it was, what was coming. But a deep, liquid warmth was spreading from his gut to his limbs, a chemical euphoria that melted his dread. The primer. It was rewriting his instincts. The smell… it didn’t repulse him. It beckoned. It smelled like them, concentrated, essential. His mouth actually watered.

“Look at his eyes,” Serenity murmured, her own gaze dark with intent. She hadn’t made a sound yet, but her posture was coiled, her hands resting on her swollen abdomen.

Harmony leaned over him, her pink hair a curtain around their faces. “You understand now, don’t you?” she whispered. Her breath was warm. “What you’re for. What you need.”

He couldn’t nod in the tight suit. A groan leaked out, part cramp, part ache. “I… I want it,” he heard himself say, the words slurred but shockingly true. The craving was a physical pull in his jaws, a hollow need in his throat. “Please.”

“Oh, fuck,” Mel breathed, her professional detachment evaporating into pure hunger. “Klaus, you magnificent bastard. It works.”

“The catalytic bonding agent promotes neural association between the olfactory-gustatory stimuli and the limbic system’s reward pathways,” Klaus stated from his corner, his voice a dry counterpoint to the thickening tension in the room. “In lay terms, it creates desire.”

“Shut up and watch,” Serenity said, her first words in minutes. They were low, firm. She finally moved, turning and lowering herself onto the platform near his head. The crinkle of her clothes was deafening. She looked over her shoulder at him, her expression serene as a portrait. “You’re going to take everything, Kevin. You’re going to love it.”

What happened next was a synchronized, intimate chaos. Harmony and Mel moved to either side of him, their hands working at the complex straps over his chest. They weren’t removing the suit. They were opening it. With a series of clicks and tugs, the front panel of the thick plastic shell loosened from his neck down to his groin, peeling back just enough to expose his skin to the cool, scented air—and to them. His chest, his stomach, and crucially, the hard, aching line of his erection, freed from the confines of the internal pouch.

The cold air on his feverish skin was a shock. So was the unabashed way they all looked at him, at his body, at his obvious, straining need. Their expressions weren’t just of lust, but of a profound, awed possession.

“He’s so hard for this,” Harmony said, her voice thick. She ran a possessive hand down his chest.

“He’s perfect,” Mel agreed, biting her lip.

Serenity didn’t speak. She simply began. A low, guttural push, a shudder that ran through her entire curvaceous frame, and the first warm, weighty deposit landed with a soft, solid sound on his exposed collarbone. The heat of it was breathtaking. The texture was thick, yielding. The smell enveloped him, richer now, direct.

And the craving in him screamed. He strained his neck forward, his tongue darting out before he could think, catching a smear from his own skin. The taste was complex, bitter, salty, deeply human—and the primer in his blood sang in recognition, flooding his system with a dark approval. A moan vibrated from his core.

“Yeah,” Harmony encouraged, her own body tensing. “That’s it.” She shifted, positioning herself over his chest. Mel moved lower, aiming for his stomach. They worked together, a well-practiced team, their bodies moving in a rhythm of strained sighs and soft, releasing grunts. The warmth began to spread across him in heavy, successive loads, each wave hotter than the last, the sound of it a wet, intimate percussion in the quiet room.

Kevin was transfixed, consumed. He turned his head, lapping at the material where it pooled near Serenity. He sought Harmony’s offering as it fell, taking it eagerly into his mouth. Mel’s landed with a splash on his abdomen, and he twisted, trying to reach it, a desperate, willing receptacle. His erection jerked against the empty air, leaking and painfully hard, a stark testament to his twisted, chemical-fueled bliss.

The women saw it. It drove them wild. Their sounds lost any pretense of control, becoming raw, guttural cries of effort and pleasure.

“Look at him want it,” Harmony panted, her body working above him.

“He’s ours,” Serenity stated, the sentence a final, crushing truth as she gave him more, her body trembling not with strain but with ecstasy.

They were burying him. Not with dirt, but with the hot, living proof of their shared consumption, their processed bodies. He was their love, encased in their shit. And as the warm, heavy mantle covered his chest, his stomach, his limbs, and he swallowed another mouthful with a starving gasp, he knew, in some last coherent synapse, that he had never belonged to anything more completely.

And as the warm, heavy mantle covered his chest, his stomach, his limbs, and he swallowed another mouthful with a starving gasp, he knew, in some last coherent synapse, that he had never belonged to anything more completely.

The silence that followed was broken only by their ragged breathing and the soft, wet sounds of settling weight. Kevin lay still, his eyes half-closed, swimming in the chemical euphoria and the overwhelming, smothering heat of them. Harmony was the first to stir, wiping a strand of pink hair from her glistening forehead.

“Okay,” she exhaled, a laugh bubbling up. “That was… wow. The primer is no joke.”

“Told you Klaus was a genius.” Mel leaned back on her heels, surveying their work spread across Kevin’s immobilized form with a critical, satisfied eye. “But look. It’s a logistical mess. We’re taking turns. It’s inefficient.”

Serenity nodded slowly, running a clean finger along the rim of the open suit near Kevin’s shoulder. “It needs to be shared. Simultaneous. A true collective act.” Her dark eyes lifted to meet Klaus’s across the room. “Can you modify the container?”

Klaus approached, his loafers whispering on the concrete floor. He peered down at Kevin, a living canvas, without a trace of revulsion or arousal. He saw only a design problem. “The current model is for solitary, sequential use. You want a triune event.”

“We want a diaper for three,” Harmony clarified, her tone bright and matter-of-fact, as if ordering a custom cake. “One big one. So we can all go on him together. At the same time.”

A slow, thin smile spread across Klaus’s narrow face. The challenge pleased him. “A confluence chamber. With separate, dedicated ingress ports feeding a singular, primary retention vault.” He began tapping rapidly on his tablet. “The structural engineering is fascinating. The weight distribution alone…”

“Will it work?” Mel interrupted.

“Of course.” Klaus didn’t look up. “It requires a more rigid external superstructure. A frame. He will be immobilized within it, a fixed point. The ports must be anatomically tailored for seal integrity during… active use.” He finally glanced at the women, his gaze calculating. “You understand he will be entirely passive. A vessel in the purest sense.”

“That’s the point,” Serenity said softly, her hand still resting on Kevin.

Kevin heard the words through a warm haze. A diaper for three. Simultaneous. The primer in his veins twisted the concept, made it feel inevitable, necessary. His spent body gave a feeble tremble.

“Clean him up,” Klaus directed, already absorbed in his schematics. “I need exact measurements. The new unit will take forty-eight hours to fabricate.”

The next two days passed in a blur of unnatural normalcy. Kevin was scrubbed clean, the suit discarded. He was fed bland, nutritious meals on a strict schedule. The women doted on him, but their touch was different—possessive, yes, but also preparatory, like farmers tending livestock before a show.

They took videos on their phones, laughing together, but he wasn’t included in the frame. He was the silent background.

Klaus returned on the morning of the third day. He didn’t come alone. Two assistants wheeled in a large, wheeled cart draped in a black cloth. They left without speaking.

“Showtime,” Harmony sang, her excitement barely contained.

Klaus pulled the cloth away.

It was not clothing. It was a apparatus. A contoured plastic shell, white and medical, shaped vaguely like a spacious, shallow chair. Thick, padded straps dangled from its sides. At its center, where one would sit, was a deep, basin-like depression. And rising from the back and sides of this basin were three open, funnel-like tubes, each angling inward, each rimmed with a soft, flexible silicone seal.

“The Confluence Frame,” Klaus announced. “He will be secured here.” He pointed to the basin. “The ports align with the primary waste exit points. You will be positioned here, here, and here.” He indicated three modest platforms arrayed around the chair. “The design ensures seal maintenance and ergonomic support for the donors during the expulsion event.”

Mel walked a slow circle around it. “It’s… clinical.”

“Precision is clinical,” Klaus countered. “This guarantees the shared experience you requested. No spillage. Total integration.”

“Get him in,” Serenity said, her voice low with anticipation.

They led Kevin to the frame. It was cold against his skin. They laid him back into the central basin, his body conforming to the hard shape. The thick straps went over his thighs, his waist, his chest, pulling him down until he could barely move a muscle. His head rested on a supportive lip, leaving him staring up at the industrial lights and the three women now moving to their stations.

This was different from the platform, from the gel trough, from the plastic suit. This was manufactured, scientific. His heart began to hammer against the strap over his ribs, the primer’s blissful fog burning away under a surge of pure, animal fear.

“Hey,” Harmony said softly, noticing his wide eyes. She leaned over her port, her face coming into his view from above and behind his head. Her smile was genuine, reassuring. “It’s just us. It’s just more of us, all at once. You held it before. You loved it before.”

“The primer will re-engage upon exposure,” Klaus stated from a monitoring station he’d set up, a bank of small screens showing biometric readouts. “Compliance is assured.”

Mel settled onto her platform with a grunt, positioning herself over the port to his right. “Remember the woods, Kev? This is like that. Just… closer.”

Serenity took her place to his left, her movements graceful and deliberate. She didn’t offer comforting words. She simply looked down at him, through the architecture of the frame, and her gaze was a command.

A series of soft hisses filled the air as Klaus activated a control. The silicone rims of the three ports inflated gently, creating a perfect seal against their bodies. The connection was absolute. Kevin was now the literal nexus.

Harmony’s voice was a whisper, strained with gathering pressure. “On three, okay? One…”

Kevin sucked in a breath, the air cold in his lungs.

“Two…”

He closed his eyes.

“Three.”

The world dissolved into a roaring, pressing, liquid heat. It was not three separate events. It was one cataclysmic, flooding deluge, a tidal wave of impossible volume filling the basin beneath him, rushing up around his sealed-in body, an ocean of them. The sound was a continuous, thundering waterfall. The frame vibrated with the force.

The smell, trapped and concentrated, hit him like a physical blow—earthy, fermenting, profoundly intimate. And as it flooded his senses, the primer in his bloodstream ignited.

The terror shattered. It melted into a gratitude so profound it felt like agony. His back arched against the straps, a raw, broken sound of utter welcome tearing from his throat as the warmth swallowed him whole.

Read on DreamPress

Write your own erotic story with AI