In the quiet suburbs of Oakridge, the Thompson family appeared picture-perfect. Mark, 25, was the golden boy—engaged to his high school sweetheart, Lisa, 24, a bubbly blonde with a body that turned heads. They lived in a cozy apartment, planning their wedding. But lurking in the shadows was Mark's younger brother, Kyle, 22, fresh out of college, crashing on their couch while job-hunting. Kyle had always envied Mark—his success, his fiancée. And now, with incestuous desires bubbling up from forbidden fantasies, he saw an opportunity to steal it all.
It started innocently. Mark worked long hours at his corporate job, leaving Lisa and Kyle alone. Lisa, frustrated by Mark's neglect, confided in Kyle over coffee. "He's always tired. We barely fuck anymore," she admitted one evening, her tight yoga pants hugging her ass.
Kyle's cock twitched at her words. He'd jerked off thinking about her—and secretly, about crossing lines with family. "That's a shame. A woman like you deserves to be fucked properly," he said, his voice low.
Lisa blushed, but didn't pull away when his hand brushed her thigh. "What do you mean?"
That night, with Mark asleep in the bedroom, Kyle cornered her in the kitchen. "Let me show you," he whispered, pinning her against the counter. His mouth claimed hers, rough and demanding. Lisa resisted at first, but her body betrayed her, nipples hardening under her tank top.
"Fuck, Kyle, we can't—this is wrong. You're his brother," she gasped.
"That's what makes it hot," he growled, sliding his hand under her shirt, pinching her nipple hard. "These nipples are begging for it."
She moaned, her pussy flooding with arousal. He yanked down her pants, fingers diving into her wet folds. "Your pussy is so fucking soaked for your fiancé's brother."
Lisa bucked against his hand, guilt mixing with lust. "Finger me, Kyle. Make me come."
He did, curling his fingers inside her, thumb on her clit. She came quietly, biting her lip to stifle screams.
But it escalated. The next day, Mark left for a business trip. Kyle wasted no time. "Strip for me, sis-in-law," he commanded in the living room.
She did, her breasts bouncing free, nipples erect. Kyle shed his clothes, his cock thicker than Mark's—veined, ready. "Suck it. Pretend it's family duty."
Lisa knelt, taking him deep, gagging as he face-fucked her. "Good girl. Suck your brother's cock."
He called her "sis" mockingly, fueling the incest taboo. "Imagine if Mark knew his little brother was fucking his fiancée's mouth."
She slurped eagerly, her hand rubbing her pussy. Kyle pulled out, bending her over the couch. "Spread that ass."
He slammed into her pussy from behind, balls deep. "Fuck, your cunt is tighter than I dreamed."
Lisa cried out, pushing back. "Fuck me, Kyle! Harder than Mark ever does."
He spanked her ass, leaving red marks. "Take my incest cock, you slut."
They fucked like animals—her riding him, tits bouncing, him sucking her nipples until they swelled. "These nipples are mine now."
He came inside her, cum dripping down her thighs. "Marked you as family property."
Guilt hit Lisa, but the thrill addicted her. Over the week, they explored darker territories. Kyle tied her to the bed with Mark's ties. "Role-play: you're my sister, and I'm stealing you from big bro."
"Fuck, yes—brother, fuck your sister's pussy," she played along, the incest fantasy igniting them.
He plunged in, rough, choking her lightly. "Incestuous whore. Beg for brother's cum."
"Please, fill sister's cunt!" she screamed, coming hard.
He introduced toys—a vibrator on her clit while he fucked her ass. "First time anal? Mark too vanilla?"
The stretch burned, but she loved it. "Fuck my ass, brother!"
NTR deepened when Mark called. Kyle answered on speaker, fingering Lisa's pussy. "Hey bro, Lisa's busy—moaning about how good life is."
Mark laughed it off, clueless. Lisa came silently, juices soaking the phone.
Kyle filmed it all secretly—close-ups of his cock in her pussy, her moaning "brother" in ecstasy. "Blackmail material, sis."
Lisa was hooked, the betrayal turning her on. When Mark returned, she faked normalcy, but snuck quickies with Kyle in the bathroom.
"Quick fuck, bro," she'd whisper, bending over the sink. He'd pound her pussy, hand over mouth, pinching nipples.
One night, Mark passed out drunk. Kyle slipped into their bed, behind Lisa. "Shh, right next to him."
He entered her slowly, fucking her while Mark snored. "Feel that? Stealing your pussy inches from your fiancé."
Lisa clenched around him, the risk explosive. "Fuck me quietly, brother."
He thrust deep, rubbing her clit. She bit the pillow, coming as he filled her.
The incest element evolved. Kyle confessed his real fantasies: "I've wanted a sister like you to fuck since forever. Pretend we're blood."
Lisa role-played: "Big brother, fuck your little sister's virgin pussy."
He dominated her, spanking, hair-pulling. "Incest slut, take it."
They ventured outside—parked car in the garage. Lisa straddled him, riding his cock. "If Mark sees..."
"Let him. Watch me claim his woman with brotherly love."
Her tits bounced, nipples grazed by his teeth. "Bite my nipples, bro!"
Climax hit, cum mixing with sweat.
But cracks showed. Mark noticed Lisa's distance, her bruised nipples from rough play. "What's going on?"
"Nothing," she lied, but guilt gnawed.
Kyle pushed further—invited his friend, Derek, for a threesome. "Share my 'sister'."
In the apartment, while Mark was at work, Derek joined. Lisa on her knees, sucking both cocks. "Double brother treatment."
Kyle in her pussy, Derek in her mouth. "Fuck her like family, man."
They DP'd her—Kyle in ass, Derek in pussy. "Feel that incest stretch?"
Lisa screamed, "Fuck me, brothers!"
Cums splashed on her face, nipples.
Mark grew suspicious, finding a cum-stained panty. Confrontation loomed.
Kyle sent Mark the videos anonymously. "See your fiancée with your brother."
Mark watched in horror: Lisa moaning "fuck me, brother," pussy pounded, nipples sucked.
Heartbroken, he confronted them. "You incestuous bastards!"
Lisa tearfully admitted: "It started as NTR, but the taboo... I couldn't stop."
Mark left, shattered.
Kyle moved in fully, claiming Lisa. "Now you're my sister-wife."
Their sex intensified—public risks, like fucking in Mark's old office after hours.
"Bend over his desk, sis."
He fucked her hard, ass slapping. "This pussy is mine forever."
Nipples clamped with office clips, pain heightening pleasure.
They role-played family reunions: "Mom and Dad away, brother-sister fuck fest."
Kyle tied her, whipped lightly. "Punish naughty sister."
"Fuck my punished pussy!"
Years later, married in secret, they had kids—whispering incest fantasies in bed.
"Imagine if our daughter..."
But they stopped there, keeping it fantasy.
Lisa rode him, "Fuck your stolen sister."
He pinched nipples, "Incest eternal."
In a web of betrayal and taboo, their NTR incest love endured, dark and unyielding.