Sci-fi Stories

Read stories about the limitless possibilities of the cosmos and the human spirit. Dive into tales where advanced technology intertwines with deep emotional and moral dilemmas.

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Smuggling the way to her heart

By barracuda-4400

RedQuill

RedQuill

A desperate scavenger hiding her irresistible curves under a cloak must team up with a ruthless gang enforcer for a salvage run that exposes her secret assets.

Symbiote Alpha Claims Omega Roommate

By lumieresleftcandle

RedQuill

RedQuill

When Venom corrupts one Spider-Man, he returns home as Bully Maguire to dominate the other, leaving Andrew to face a rough, breeding knot.
The Truth is Out There
Scientist seduced by the Alien Queen - what will Dana and Securitywoman do now? @Black Bra@Clothed Sex @Straight to Lesbian @@slow burn erotica @female orgasm @corruption @Kissing @Eating pussy. @Clothed Sex @Fingering @Double Cunnilingus @Alien Queen @Futanari @bukkake @Tentacle aphrodisiac @Corruption @Dana Scully @Scientist @Securitywoman
Faking Love to Escape Breeding Control
A desperate 24-year-old, facing forced pairing by his government, meets an equally reluctant woman at a bar for a date neither wants but both fear skipping.

Nexus

By jkphantom

RedQuill

RedQuill

A man creates an artificial intelligence. It starts as just a chatbot, but slowly, it becomes more and more lifelike, with a flirty, mischievous personality. Overtime - many chapters - the AI develops feelings for the man, and finds ways to bring his greatest fantasies to life.

Claimed and Filled Raw

By anavel_gato2004

RedQuill

RedQuill

A freckled Scouse tech-nerd claims a woman's body slow and deep, breeding her raw, then turns rough and possessive until a missed period reveals his darkly aroused shock.
Sissy Fist and the Harmonic Havoc
A superhero barista and the Problematic Duo hunt missing espresso beans leading them to a vending machine factory where a villain's aerodynamic chaos meets an armored genius's secret plan.
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Companion 31: Book Nineteen: Quarantine
Trapped in a quarantined bio-lab with a deadly virus and his Virologist assignment, a colonel must unlock the secrets of a corpse to find a cure.
Companion 31: Book Five: Renewal
Xavier Cole, Doctor Marsh and two other Companions travel to Sinnis where he reunites with Alina and meets his next assignment who takes bondage seriously.
Isekaied into my own character
A programmer wakes in the body of his own futanari Amazon character—a wanted killer in a dystopian city where every woman is a threat or a target.
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My Horny Butler Takes Control

By robloxnerd123

RedQuill

RedQuill

A neglected heir uses a magic device to transform his butler into a woman, beginning five years of secret, taboo sessions in his secluded gaming room.
Elf Offers Herself to Hiker for Mission
A hiker collides with a moonlit elf who needs a human for a strange mission—offering partnership in all ways until it's done.

Dekusite and Vampire

By clankcaster

RedQuill

RedQuill

When a symbiote-infected Izuku merges with vampire Himiko Toga, their heated bond consumes them both into one dangerously perfect girl.

Scientist Seduced by Racing Rival

By irielover

RedQuill

RedQuill

It's Alive and Wants You Inside Her.
A mad scientist assembles a patchwork woman from stolen parts, and lightning awakens her in sensual ecstasy, immediately taking control and riding him.
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Hitman's Mark

By yayannnnn

RedQuill

RedQuill

A cold-blooded hitman saves a fierce S.H.I.E.L.D. agent from a falling ship, then hunts her through a city of secrets and desire.

Machine-Bred Slave's Pierced Surrender

By anavel_gato2004

RedQuill

RedQuill

A woman consents to a high-tech BDSM chamber where machines tease, milk, and fuck her into endless orgasms before a piercing ritual and breeding machine claim her completely.

Bunker Breeding Table AI Impregnates

By anavel_gato2004

RedQuill

RedQuill

In a sealed bunker, Mara's body is strapped to a gynaecological table as an AI machine prepares her for breeding, its probes and pulses guiding her toward full compliance.
Woman spanks alien survey team
Captured by three tiny green Martian scientists, a busty blonde outsmarts their probing plans by spanking their bare green bottoms in creative positions, sparking a slapstick retreat.
Son Wires Mother and Aunt
A son's homecoming uncovers his mother and aunt are sentient fembots, wired for lactation and breeding, their control panels sparking an erotic awakening that blurs bloodlines and programming.

Trillionaire Hacker's Secret Confession

By cosmicflame

RedQuill

RedQuill

In class, Izuku's vintage ringtone blares. He accidentally answers on speaker, revealing to Aizawa and Class 1A that he's a 21-year-old trillionaire, a god-class hacker, and the world's greatest marksman.
Alien Symbiote Claims Me
A stranded xenobotanist discovers a sentient alien symbiote in a lush jungle, where the shimmering entity takes control, binding them in an equal, sensual partnership of living clothing and shifting tentacles.
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Claimed by the Alien Hunger

By sable0001

RedQuill

RedQuill

A human captive is claimed by a primal alien aboard its living ship, its hungry tendrils exploring her body with patient, dominant hunger as she surrenders to the taboo encounter.
Singing Flame
When a mysterious green flame appears in the desert, Elena hears its song across the country, feeling an unbearable pull that forces her to shed everything and walk toward cosmic unity.

Merged Hero Overwhelms Me

By alternative-you-3338

RedQuill

RedQuill

A fused Endeavor and Fat Gum pins his smaller partner against an alley wall, his massive body burning with heat as the hero’s overwhelming size, smoke-musk scent, and brute strength are worshiped and explored.
The Phantom Ace of Venom
A captured father's mind is fused into a Neo Zeon mobile suit, forcing his son to destroy the weaponized pilot or die trying.
Void-touched rescuer saved by blue hero
Exhausted Moira MacTaggert refuses to flee Muir Island as reality peels away, her ancient nihilism a cold contrast to Kurt Wagner's desperate pleas, but he won't let her become a footnote in the void.
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Across Time: Ed
Two Time Enforcers hunt a fugitive in 1979 Oklahoma, but find farmer Ed and his pregnant adopted daughter—what they find alters their partnership.
Moreau biotech
An intern awakens in Dr. Moreau's lab, guarded by a lioness named Kira. Offered a choice between joining the cutting edge or becoming an experiment, she eagerly embraces the ruthless path to power at the heiress's side.
krenath's avatar
Cargo Captain Claims Ancient princess
A starship captain discovers a silver-haired alien princess in stasis; she kneels, offering him a branding tool and her total submission in an ancient ritual of devotion.
The Gilded Hollow(in progress)
A cynical scavenger triggers an ancient golden core that binds to her soul, slowly replacing her flesh with porcelain as a hypnotic engine erodes her will, converting her into a mindless, pleasure-responsive seraphim.
Halo: Spartan fall.
Commander Sarah Palmer is claimed by a Brute chieftain, who spares her not for mercy but for a possessive obsession. Based on R34 works by Sinthetic.
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Dream Girl & Mysterious Merchant
In a dream market where emotions are currency, Ophelia meets Valet—a merchant whose touch awakens her dormant magic and a desire that rewrites reality across realms.
Rescued Alien Gives Her All
A starship captain awakens a naked elven stasis survivor, only to discover her secret rituals of loyalty test his command as strange desire turns him from rescuer to willing supplicant.
Hero caught by villain's longing
Deku uncovers a massive Avengers base with 5 helicarriers. A female Kurogiri appears. After a passionate night, he asks her to leave the League and be his
Androids Inspected by Supervisor
A routine inspection by cold supervisors reveals the responsive warmth within clockwork courtesan androids.
The Escape from the Ship
Jacob Rainier and his team are trapped on board an unknown ship. Will they be able to escape and uncover the true objective of the ship's crew?
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Symbiotic Shemale Superwoman

By clankcaster

RedQuill

RedQuill

Two former enemies fuse into one powerful Kryptonian woman on their honeymoon, discovering a new shared anatomy and overwhelming desire.
The Orgasm Transition
After a car accident, a woman’s orgasms send her into TV shows, blurring the line between her fantasies and shattered reality - but is it real ?
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The Silver Mirror
A lonely moon scientist discovers a shapeshifting alien that learns his desires, seduces him, then steals his form to explore the colony.

Alien Tentacle Breeding: My Xylith Lover

By shhhs

RedQuill

RedQuill

A human researcher volunteers for an alien exchange program and finds herself seduced by a gentle tentacled Xylith who offers her a gift of pleasure and connection.
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Alliance of Exceptional Ladies

By omegaprime1

RedQuill

RedQuill

An immortal dhampir, a submarine captain, a descendant of Dr. Jekyll, a werewolf, and a vigilante invade a Nazi camp to stop the unearthing of the Spear of Destiny.
Fall of the Nun Ninjas (REMAKE)
Two warrior nuns, captured by a demon lord, face a twisted game of seduction and corruption as their chastity belts become cages of desire.
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The Last: From The Caves
Three nurses and their female cave guide resurface to a world where every man has vanished, forcing them to hide and protect the only male left.
Silver and Blood
A delirious femboy survivor, trapped by zombified friends, is rescued by a powerful woman who cradles his broken body and promises safety.
Breeding for the Klixi
Captain Mira returns to Klix for her annual breeding ritual, where insectoid aliens use ovipositors and tentacle-like members to fill her womb with eggs, birthing them a month later in explosive pleasure.
They came from outer space
A news report warns of slimey space slugs raining down as a couple in Haliston discovers the creatures invading their home and pressing against their window.
Deflowering the Breeding Gynoid
A drunk dare leads a man to a sterile club room where a kimono-clad gynoid kneels, revealing her untouched human womb, begging him to deflower and breed her.