Alex had always been curious about his stepsister, Mia. They shared a wall between their adjacent bedrooms in the old family house, a thin barrier that sometimes let faint sounds trickle through—giggles, whispers, the occasional moan that Mia dismissed as 'study sessions gone late.' Mia was openly lesbian, and she frequently invited groups of women over, claiming it was for school projects or book club meetings. Alex never pried too much; after all, she was family, even if only by marriage. But one evening, everything changed.
He was in his room, adjusting his desk lamp, when his eyes caught something odd on the wall beside Mia's side. A small bulge protruded slightly, flesh-toned and rigid. He leaned closer, heart pounding, and realized it was the base of a dildo embedded through a tiny hole in the plaster. The shaft stuck out about six inches into his space, right at bed height if he knelt. Mia must have drilled it in for some private fun, but why position it facing his room? He touched it tentatively—solid silicone, unyielding. A flush of heat hit him as he imagined what it was used for on her side.
The next day, Mia left her door ajar while hosting a 'group study' with two classmates. Alex passed by, intending to grab a snack, but paused at the crack. Inside, clothes littered the floor. Mia, topless with her perky breasts exposed, knelt between her friends on the bed. One girl, a brunette with short hair, straddled Mia's face, grinding her wet pussy against Mia's eager tongue. The other, a blonde, positioned herself over the dildo protruding from the wall, lowering her ass cheeks apart as she impaled her tight asshole on the silicone shaft. She bounced slowly, moaning as it stretched her, while Mia reached up to finger the brunette's clit. The air filled with slurps and gasps—definitely not studying. Alex's cock hardened instantly in his pants. He backed away, mind racing with dark ideas.
That night, after everyone left, Alex waited until the house was quiet. He grabbed a small drill from the garage, his hands shaking with excitement. The dildo hole was precise, about two inches wide, hidden behind a poster on Mia's side but bare on his. He widened it just enough to match, careful not to crack the wall. Heart thumping, he tested by pushing his erect cock through—the fit was perfect, the head and shaft emerging exactly where the dildo had been. It felt exposed, vulnerable, but thrilling. For when he couldn't stay hard or needed a break, he crafted a dummy: a silicone replica molded from his own dick, painted to match, with a suction base to hold it in place. He slid it in now, securing it flush.
The real genius was the camera. He drilled a pinhole above the main opening, threading in a tiny wireless spy cam from an online order—high-def, with audio, linked to his laptop. He positioned it to capture everything: the bed, the wall, the action. Testing the feed, he saw his room's side clearly, and when he peeked through, Mia's bed came into view, rumpled sheets and all. Perfect. He stroked his cock, imagining the women riding it, clueless.
Mia's invitations ramped up. She hosted almost every weekend, waves of women cycling through—classmates, neighbors, even family. Alex didn't count, but he recognized faces: his aunt Lisa, curvaceous in her forties with full hips; cousin Sarah, barely legal with a tight athletic body; teachers from school, stern-faced but shedding inhibitions behind closed doors. They all gathered in Mia's room, doors locked, thinking it was safe.
The first real test came Friday night. Mia brought three classmates: Emma, a redhead with freckles; Taylor, slim and tattooed; and Jade, curvy with dark skin. Alex heard the door click shut, then laughter turning to heavy breathing via the audio feed. He stripped in his room, lubed his cock, and pushed it through the hole. The dummy swapped out seamlessly. On the camera, the girls stripped, bodies pressing together. Mia kissed Emma deeply, tongues sliding as hands groped breasts and asses. Taylor knelt, spreading Jade's thighs to lick her shaved pussy, lapping at the folds until Jade whimpered.
'Who's up for the wall toy?' Mia grinned, pointing to the 'dildo'—Alex's throbbing cock, veins pulsing invisibly. Jade went first, backing her ass against it. She rubbed the head along her slick slit, coating it in her juices, then pushed back. Alex groaned silently as her tight pussy engulfed him, walls clenching hot and wet. She rocked her hips, fucking herself on his shaft while Mia sucked on her nipples, twisting them hard. Taylor joined, fingering Jade's clit as she rode, the slaps of skin echoing. Emma straddled Jade's face, grinding down so Jade could eat her out, tongue delving deep.
Jade came first, her pussy spasming around Alex's cock, milking him. He held back, but the sight on the camera—bodies writhing, pussies dripping—pushed him. As Taylor took her turn, sliding her asshole down his length with a pop, lubed by Jade's cum, Alex thrust subtly. Taylor bounced, her cheeks jiggling, while Mia and Emma scissored beside her, clits rubbing furiously. The room smelled of sex, moans building. Alex couldn't hold it; he erupted, pumping thick ropes of cum deep into Taylor's ass. She gasped, feeling the warmth, but attributed it to some squirting feature. 'Fuck, this thing's amazing,' she panted, clenching to squeeze out the load, which dripped down her thighs.
They rotated all night. Emma deepthroated the 'dildo' between turns, slurping Alex's cum off it before impaling her pussy. Mia even used it on herself last, riding reverse cowgirl while the others licked her from behind, tongues on her ass and clit. Alex came twice more, filling her with hot spurts she moaned over, thinking it was toy magic. He recorded every second: the audio of wet sucks and cries, video of pussies stretching, asses grinding, cum leaking. By morning, his laptop held hours of gold.
The encounters blurred into a haze of taboo bliss. Aunt Lisa visited midweek, alone with Mia for a 'family catch-up.' Alex's cock was ready. Lisa, tipsy from wine, stripped to her lacy thong, her heavy breasts swaying. Mia pushed her against the wall, kissing her neck while fingering her mature pussy. Lisa mounted the shaft eagerly, her experienced walls gripping tight as she fucked it hard, juices soaking Alex's balls on the other side. Mia knelt to lick Lisa's clit, sucking the nub until Lisa shuddered, cumming with a wail. Alex unloaded inside her, cum bubbling out as Mia lapped it up, sharing the taste in a deep kiss. 'Tastes real tonight,' Lisa laughed, oblivious.
Cousin Sarah came with two friends, turning it into a gangbang on the 'toy.' Sarah, with her perky tits and shaved mound, took it in her mouth first, bobbing deep while her friends ate each other out. Then she bent over, guiding it into her ass, pounding back as Mia spanked her cheeks red. The friends took turns riding, pussies and asses alternating, all while tribbing and fingering in a lesbian frenzy. Alex came in Sarah's pussy, the overflow licked clean by the group. He captured the family taboo perfectly—his own cousin creaming on his hidden dick.
Even teachers joined. Ms. Harper, the strict English teacher, arrived with Mia's gym coach, both in yoga pants that hugged their asses. They stripped, bodies toned and firm. Harper straddled the cock first, her pussy devouring it in slow grinds while the coach sucked her tits. Mia filmed them on her phone for 'memories,' but Alex's camera caught the real show: Harper bouncing faster, walls fluttering as she orgasmed, then the coach taking it anally, her muscular ass clenching rhythmically. They made Mia eat their creampied holes, tongues scooping Alex's cum. He saved the files, labeling them by guest: 'Aunt Creampie,' 'Cousin Anal,' 'Teacher Threesome.'
Weeks passed in secret ecstasy. Alex's collection grew—dozens of videos, audio of moans naming the 'best dildo ever.' The women came repeatedly, pussies and asses filled with his loads, shared in kisses and licks, all under the guise of girl-on-girl play. They never suspected; to them, it was just a wall-mounted fucktoy enhancing their lesbian romps.
But Mia discovered it one fateful night. She'd invited a new woman, a neighbor named Riley, for a solo session. As usual, they used the dildo—Mia riding it while Riley fingered her from behind. But midway, Mia pulled off to grab lube and noticed something off: the shaft retracted slightly, warm flesh instead of cool silicone. She froze, heart racing, as Riley continued licking her. Later, alone, Mia snuck into Alex's room while he showered. His laptop was open, files everywhere. She clicked one—her own face, moaning as she came on what she now knew was his cock. The camera angle confirmed it. Rage and arousal mixed; she'd been fucked by her stepbrother unknowingly, and so had everyone else.
She didn't scream or confront him. Instead, a devious smile crept across her lips. Too late to stop now—the videos were gold, and she had plans. Blackmail? Joining in? Turning the tables with her own twisted games? Mia copied the files to her drive, already plotting how to make Alex pay—and play—in ways he'd never see coming.