A Tentacle Temptation - Cover

A Tentacle Temptation

Copyright© 2026 by Snowman

Chapter 5

Science Fiction Sex Story: Chapter 5 - Sisters Jill and Sarah discover a new esoteric shop in their neighborhood that sells a variety of unusual items, including a small, almost magical tentacle monster designed to give women sexual pleasure. Sarah is immediately drawn to the creatures and convinces Jill, who is hesitant, to buy one as well. The sisters return home and bond with their new companions, experiencing an intense and unexpected connection that awakens deep, primal desires within them.

Caution: This Science Fiction Sex Story contains strong sexual content, including Fa/Fa   Consensual   Lesbian   Fiction   Science Fiction   Aliens   Incest   Sister   Light Bond   Exhibitionism   Masturbation   Squirting   Voyeurism   AI Generated  

The morning light felt thin and accusatory. Jill woke with a start, her heart already thumping a frantic rhythm against her ribs. The night had been a parade of fragmented dreams—slick tendrils, Sarah’s open mouth, a pulsing, multicolored light that seemed to breathe. She lay still for a moment, listening. The apartment was quiet, but it was the tense quiet of a held breath.

She pushed back the covers. The air was cool on her skin. She pulled on her soft, terrycloth bathrobe, tying the belt with hands that trembled just slightly. When she opened her bedroom door, Sarah was already in the hallway, leaning against her doorframe in an identical robe. Her red hair was a wild corona around her pale face, her eyes wide.

“Hey,” Sarah whispered.

“Hey,” Jill echoed.

They moved to the kitchen on autopilot. The routine of breakfast was a lifeline. Jill put coffee on. Sarah got out bowls and cereal. The clink of porcelain, the gurgle of the brewer, were sounds from another life. They sat at the small table, the silence stretching between them, filled with the things they’d agreed to do.

Sarah broke it first, her voice hushed. “So. Today.”

“Today,” Jill confirmed, stirring her coffee though she hadn’t added anything to it.

“How do we ... start?” Sarah asked, picking up a single cereal piece and putting it back in the bowl. “I mean, we have the rules. We write. We open. But then what? Do we just ... say ‘go’?”

Jill took a sip of bitter coffee, the heat grounding her. “Elara said it’s a conversation. They respond to desire, to intention. So we have to ... have an intention. A clear one.”

Sarah’s cheeks pinked. “My intention is to not freak out and run screaming from the room.”

A weak smile touched Jill’s lips. “Mine too. But something more specific. For the ... the first time. With the rules.” She set her mug down, forcing herself to articulate the idea that had been forming in the grey hours of the morning. “What if ... we keep it simple? Just us, and them. But we’re in control of our own bodies. We ... we touch ourselves. And we let them ... enhance it. And we watch each other.”

Sarah’s spoon stilled. She looked across the table, her green eyes searching Jill’s. “Masturbate. Together. While they ... help.”

“Yes. It’s a start. It’s something we know. It’s our hands, our own rhythm. But we include them. We see what they do. And we ... we don’t touch each other. Not this time. We just watch.” The plan sounded clinical as she said it, a bizarre experiment. But beneath the clinical terms, a hot, slick thread of anticipation coiled in her belly.

Sarah considered it, her head tilted. The fear in her eyes was slowly being overtaken by that familiar, blazing curiosity. “Okay,” she said, nodding slowly. “Okay. I like that. It’s ... it’s a baseline. We see what they add. And we’re facing each other. We can see each other’s faces. We can check in.”

“Exactly.”

They finished eating in a silence that was now charged with purpose, not dread. They cleared the dishes with efficient, quick movements. The ordinary tasks felt like a final ritual before stepping into a sacred, terrifying space.

“Journals first,” Jill said.

They retrieved the leather-bound books from their rooms. Jill sat at the kitchen table; Sarah took the armchair in the living room, giving each other space. Jill opened her journal to a fresh page. The blank cream surface was daunting. She uncapped her pen.

What do I hope for? she wrote, the heading bold and underlined.

She chewed her lip, then began. I hope to feel in control. I hope to understand the connection better—not just let it happen to me, but to guide it. I hope to see Sarah without fear. I hope the creature ... the Euphoria ... responds to my direction, not just my hunger. I hope it feels good without being overwhelming. I hope we remember the safeword.

What am I afraid of? New line. I’m afraid of losing myself. I’m afraid of wanting it too much. I’m afraid of seeing a look on Sarah’s face that I can’t unsee, or her seeing one on mine. I’m afraid the Euphoria will take over and ignore me. I’m afraid this will make the craving worse, not better. I’m afraid of the noise in my head never stopping.

She paused, then added one last line. I’m also afraid of how much I want this. The thought of letting go, with Sarah watching, with it touching me ... my stomach is tight and my skin feels too sensitive already. I’m wet just thinking about it. That scares me most of all.

She closed the journal, holding it against her chest for a moment. Across the room, Sarah was scribbling furiously, her brow furrowed in concentration. After another minute, she snapped her journal shut with a definitive clap.

“Ready?” Sarah asked, her voice a little too bright.

“Ready.”

They walked to their bedrooms. Jill stood before her closet. The door seemed to hum. She reached for the knob, turned it. The interior was dim, smelling of cedar and fabric. She pushed the stack of blankets aside. There it was. The wooden box. It looked the same, but the carvings seemed deeper, more intricate in the shadowy light. She lifted it. It was warm, as always. A gentle, living warmth that seeped into her palms and traveled up her arms.

She carried it to the living room. Sarah was already there, placing her box on the floor by the far end of the large, L-shaped couch. They’d pushed the coffee table against the wall to clear a space.

“Sit opposite?” Sarah suggested, pointing to the two long sections of the couch that faced each other.

“Okay.”

Jill placed her box on the floor by her chosen seat. They stood there for a moment, just looking at the boxes, then at each other. Both in their bathrobes, journals in hand. They were pale, nervous, resolute.

“Together?” Jill said.

“On three,” Sarah agreed. She took a deep, audible breath. “One.”

Jill’s fingers found the small brass latch on her box.

“Two.”

She could feel a vibration through the wood now, a subtle thrum of anticipation that matched her own.

“Three.”

In unison, they flipped the latches and lifted the lids.

The light in the room didn’t change, but the air did. It grew denser, charged. A clean, ozone scent filled Jill’s nostrils, crisp and electric. From the velvet interior of her box, her Euphoria emerged.

It moved slowly, sinuously. The central core—a palm-sized, gelatinous mass of deep indigo—pulsed with a soft, internal light. Around it, six tendrils uncoiled, each as thick as two of Jill’s fingers at the base, tapering to a delicate, questing point. They were a shade lighter than the core, a luminous violet, and they glistened with a natural, slick moisture. They didn’t spill out of the box; they flowed, with a sentient grace, draping over the side and onto the carpet. The creature oriented itself, the core turning until it seemed to be facing her. It waited.

Across from her, Sarah’s Euphoria was performing the same ritual. Its core was a vibrant, spring-green, its tendrils a shimmering lime. It settled on the floor by Sarah’s feet, equally still, equally attentive.

They were not pets. They were not machines. The intelligence in their patient stillness was unmistakable. They were listening.

“They’re waiting,” Sarah breathed, her eyes fixed on her creature.

“For us,” Jill said. Her throat was dry. “We have to ... start.”

The rule was clear: they were to guide this. Their hands first.

Jill’s fingers went to the knot of her robe’s belt. She fumbled, the terrycloth slipping under her damp palms. She glanced at Sarah, who was having the same trouble, her knuckles white on the fabric. “It’s okay,” Jill said, the words meant for both of them.

She finally loosened the knot. With a shaky exhale, she parted the robe and let it slide off her shoulders. It pooled around her waist as she sat, then she shifted her hips to let it fall completely behind her on the couch. The cool air of the apartment washed over her naked skin. Her small, pale breasts felt tight, the pink nipples already drawn into hard points. A sprinkle of freckles danced across her chest and shoulders. She drew her legs up, then slowly, she lay back, scooting down until she was reclining lengthwise against the armrest on her section of the couch. She turned her head to face Sarah.

Sarah had shed her robe. It lay in a heap on the floor. She quickly took her place on the couch, reclining against the opposite armrest, her legs spread, feet almost touching Jill’s. Sarah’s body was a landscape of lush curves and fiery hair. Her 36C breasts were full and heavy, the areolas a pale pink, tipped with hardened coral peaks. The trimmed red hair at the junction of her thighs was a neat, fiery triangle against her pale skin.

Sarah’s eyes were locked on Jill. “You’re so beautiful,” she whispered, and the words held no flirtation, just awed, nervous honesty.

You too,” Jill managed. Her heart was a wild bird in her cage of ribs. This was it. The moment stretched, taut as a wire.

Jill moved her hand first. She let her right hand slide down her own body, over the flat plane of her stomach, through the soft, coppery curls of her own trimmed patch. Her skin was hypersensitive; every touch sent little sparks along her nerves. Her fingers found the top of her slit. She was already swollen, puffy with arousal. Her outer lips were plump and parted, slick with her own readiness. She traced a finger along the seam, and a full-body shiver wracked her. “Ah...” The sound escaped her, soft and unbidden.

Across from her, Sarah mirrored the action. Jill watched, mesmerized, as Sarah’s hand—slim, with bitten nails—disappeared between her own thighs. Sarah’s head fell back against the couch cushion, her eyes fluttering shut for a second before forcing them open again, determined to watch.

Jill pressed deeper. She parted her own lips, revealing the darker, flushed inner folds, already glistening and drenched. Her clitoris was a hard, eager nub at the apex, throbbing with her pulse. She circled it with two fingers, a slow, tentative motion. Pleasure, familiar and self-made, zinged through her. Her hips gave a tiny, involuntary jerk.

Simultaneously, the Euphorias stirred.

Jill saw Sarah’s green creature move first. A single lime-colored tendril lifted from the floor, its tip weaving gently through the air as if tasting it. It moved toward Sarah’s outstretched leg, not touching, just hovering an inch above her calf. Waiting for an invitation.

Jill’s own indigo Euphoria acted in concert. A violet tendril, slick and shimmering, rose and approached her ankle. The sensation of its proximity was a cool, electric tingle on her skin. It wasn’t a touch, but the promise of one, and it made her breath catch.

“They’re asking,” Sarah said, her voice strained. She was still moving her hand in slow circles over her clit, her thighs falling wider apart. The sight was profoundly intimate. Jill could see the detailed topography of Sarah’s sex: the plump, parted outer lips, the glistening, deeper pink inner lips that framed the entrance to her vagina, which was already clenching rhythmically around nothing. A pearl of clear fluid gathered at the opening and trailed down toward her perineum.

“Let them,” Jill gasped. She was circling her own clit faster now, the building friction delicious and urgent. She gave a small, almost imperceptible nod.

The violet tendril descended. It didn’t grab or lunge. It alighted. The touch was feather-light, cool at first, then warming instantly to match her skin temperature. It coiled gently around her ankle, not restraining, just connecting. The sensation was not just physical. A wave of calm, focused intent flowed up her leg, mingling with her arousal, sharpening it. The background hum in her skull focused into a clear, single note.

Oh, god,” Sarah moaned. A green tendril had wrapped around her wrist, not pulling it away, but simply holding it, a symbiotic partnership. Sarah’s hand kept moving, her fingers sliding through her own wetness, slipping lower to press at her entrance before returning to her clit.

Another tendril from Jill’s creature approached her other leg. This one didn’t wrap. It slid up the inside of her calf, a slow, sensuous caress that left a trail of shimmering moisture that tingled. Jill’s back arched off the couch. “Nnngh! Yes...” She was watching Sarah, watching Sarah’s hand work, watching Sarah’s face contort in pleasure, and it fueled her own fire. Her fingers were soaked, sliding easily now. She pushed two inside herself, a shallow penetration, her inner walls gripping tightly, welcoming the familiar stretch.

Sarah mimicked the action, pushing two fingers deep into her own dripping channel. Her mouth dropped open in a silent cry, her hips pumping against her hand. “Jill ... look...”

Jill looked. More tendrils were in motion now, from both creatures. They moved with an uncanny, synchronized choreography. A second violet tendril had joined the first on Jill’s leg, sliding higher, tracing the sensitive skin of her inner thigh. A third hovered near her free hand, which was clutching at the couch cushion. A green tendril had wound around Sarah’s thigh, another was tracing the underside of her breast.

The creatures were not taking over. They were amplifying. Every touch of her own hand felt magnified, layered with the electric sensation of the tendrils’ proximity and their gentle, supplementary caresses. The one on her inner thigh reached the crease where her leg met her body. It paused, the slick, warm tip just brushing against the outer swell of her labia.

Please,” Jill heard herself beg, though she didn’t know to whom—to herself, to Sarah, to the creature.

The tendril responded. It didn’t penetrate. It glided along her outer lip, from the top of her slit down to the bottom, gathering her wetness. The sensation was unlike anything: smooth, firm, yet alive, thrumming with a gentle internal vibration. It was cooler than her own feverish skin, a shocking, perfect contrast. “Ah! Ah, god...”

Sarah was gasping, her body undulating. A green tendril had found her nipple. It was circling the stiff peak, not sucking, but applying a perfect, oscillating pressure that made Sarah’s back bow off the couch. “It’s ... it’s on it ... it knows exactly...” she panted.

Jill’s tendril completed its journey along her slit and retreated. For a heart-stopping second, she thought it was leaving. But it returned, this time with a partner. Two violet tendrils now flanked her own busy hand. One positioned itself just below her clit, applying a gentle, steady upward pressure against the root of the bundle of nerves. The other pressed against her perineum, the sensitive patch of skin between her vagina and anus.

The effect was instantaneous and catastrophic. The pleasure, which had been building in a steady climb, suddenly rocketed upward. It was no longer just her fingers on her clit, her fingers inside her. It was a full-spectrum, symphonic assault on every erogenous zone she possessed. The pressure points were perfect, unerring. Her vision blurred at the edges. “Sarah ... I can’t ... it’s too much...” she cried, but her hand never stopped its frantic circling, her hips pistoning against her own touch.

“Don’t stop!” Sarah shouted, her own body a frenzy of motion. Two green tendrils had framed her thrusting fingers, not penetrating her, but applying rhythmic pressure to the swollen, engorged flesh around her entrance, massaging her outer walls through her skin. Another was tracing maddening circles on her lower belly, just above her pubic bone. “It’s ... it’s with me ... Jill, look at me!”

Jill forced her eyes open, locked onto Sarah’s face. Sarah’s cheeks were flushed scarlet, her mouth a wet, open ‘O’, her eyes dark with desperate pleasure. Seeing her like that, in the throes of an ecstasy that was both self-made and symbiotically enhanced, pushed Jill even closer to the edge. Her climax was a tangible presence, a crushing weight of need low in her belly.

Her own tendrils increased their vibration. The one at the root of her clit pulsed in time with her frantic heartbeat. The one on her perineum pressed harder, sending deep, resonant shocks through her core. Her fingers were a slippery blur, pounding her G-spot inside while her thumb mashed her clit. The dual stimulation, internal and external, natural and otherworldly, was coalescing into a single, inevitable point.

“I’m gonna ... Sarah, I’m gonna come!” Jill screamed, the words tearing from her throat.

“Me too! Now, Jill, now!” Sarah’s voice was a raw, ragged sob. Her body was taut as a bowstring, every muscle standing in relief. Her breasts bounced with the force of her movements, the green tendril on her nipple now flicking over the tip with blinding speed.

Jill’s world exploded. The orgasm didn’t roll through her; it detonated. It started as a white-hot supernova at her clit, then ripped outward in a shockwave that convulsed her entire pelvis. Her inner walls clamped down viscously on her own fingers, a series of rhythmic, milking spasms that seemed to pull the climax deeper into her very core. A gush of hot fluid soaked her hand and the couch cushion beneath her—not a squirt, but a profuse, rushing flood of her release. The tendrils held their points of contact, the vibrations becoming a continuous, ecstatic buzz that prolonged the peak, stretching it into an agonizing, exquisite eternity. Her back arched impossibly high, her head thrown back, a wordless, shattered cry ripped from her lungs. Her legs shook violently, the muscles in her thighs quivering like plucked wires.

Through the haze of her own release, she saw Sarah shatter. Sarah’s body seized, her hips lifting completely off the couch. A sharp, high wail echoed in the room. Jill saw the muscles of Sarah’s abdomen clench hard, saw the glistening mess between Sarah’s thighs contract and pulse. The green tendrils seemed to glow brighter, throbbing in time with Sarah’s contractions. The smell of sex—musky, sweet, and laden with that clean ozone—flooded the air, thick and potent.

The waves of pleasure began to recede, leaving Jill boneless and trembling. The tendrils slowly, gently, released their pressure. The one around her ankle unwound. The ones at her clit and perineum withdrew, their tips glistening with her fluids. They retreated back toward the indigo core, which pulsed with a slow, satisfied rhythm.

Jill’s hand fell away from her body, landing on her stomach with a wet slap. She was panting, every breath a struggle. She felt emptied, shattered, and utterly, profoundly connected. She turned her heavy head to look at Sarah.

Sarah was in a similar state of wreckage. Her hand lay limply on her pubic bone, covered in her own glossy wetness. Her chest heaved. The green tendrils were also receding, leaving her skin dewy with their shimmering residue. Their eyes met.

For a long moment, there was no sound but their ragged breathing and the faint, fading hum from the creatures’ cores. The air was thick with the scent of their combined orgasms.

Sarah’s lips moved first, forming a weak, dazed smile. “Wow.”

A breathy, incredulous laugh bubbled from Jill’s raw throat. “Yeah. Wow.”

They lay there, spent and exposed, the afterglow a physical warmth radiating from their cores. The hypersensitivity was intense; the brush of the couch fabric against her back felt like sandpaper, yet the memory of the tendrils’ touch was a phantom brand on her skin. Jill’s clit throbbed with a residual, aching pulse. She could see Sarah’s sex, swollen and used, a puffy, beautiful mess of glistening pink flesh, still clenching occasionally with tiny aftershocks.

The Euphorias had returned to a resting state by their boxes, but their light still glowed softly. They weren’t dormant. They were attentive. Waiting again.

Sarah slowly, gingerly, pushed herself up on one elbow. “The journals,” she whispered, her voice hoarse. “We ... we have to write. Before we forget.”

Jill nodded, the movement requiring immense effort. She felt sticky, drenched, utterly debauched. But the craving, the humming anxiety of the past week, was gone. In its place was a deep, satiated stillness, and a new, even more complex hunger—not for release, but for understanding.

She managed to sit up, her body protesting. She reached for her journal and pen, which had fallen to the floor. She opened it to a fresh page, her hands still unsteady. She looked at Sarah, who was doing the same, her own journal propped against her raised knees.

What happened? Jill wrote at the top of the page.

 
There is more of this chapter...
The source of this story is Storiesonline

To read the complete story you need to be logged in:
Log In or
Register for a Free account (Why register?)

Get No-Registration Temporary Access*

* Allows you 3 stories to read in 24 hours.

 

WARNING! ADULT CONTENT...

Storiesonline is for adult entertainment only. By accessing this site you declare that you are of legal age and that you agree with our Terms of Service and Privacy Policy.


Log In