Stepbrother's Tender First Time Awakening

Alex had always been the quiet type, the kind of 18-year-old virgin who blushed at the mere mention of sex in movies. Books and video games were his world, not girls. But everything changed when his dad married Mia's mom, blending their families into one awkward household. At 19, Mia was the opposite—confident, curvaceous, with long dark hair, full C-cup tits that strained against her tank tops, and an ass that swayed like a siren's call in her yoga pants. She strutted around the new house like she owned it, while Alex tiptoed, trying not to stare.

It was their first week living together. Their parents were out for a "romantic weekend getaway," leaving the step-siblings alone. Alex's room was right next to Mia's, the walls thin enough that he'd heard muffled moans the night before, his cock twitching painfully in his boxers as he fought the urge to jerk off imagining what she was doing. That afternoon, heart pounding from a particularly steamy scene in his latest hentai manga, he headed to the bathroom for a cold shower. But he misjudged—thinking Mia was downstairs—and pushed open her bedroom door without knocking.

There she was, sprawled naked on her pink sheets, legs spread wide like a filthy invitation. Her shaved pussy glistened under the afternoon sun filtering through the blinds, lips puffy and pink. A buzzing vibrator hummed against her swollen clit, her hips bucking as she plunged two fingers deep into her dripping hole. "Fuck, yes," she moaned, eyes squeezed shut, tits heaving with each breath, nipples hard as diamonds.

Alex froze, door halfway open. His face burned crimson, but his virgin cock betrayed him instantly, surging to a rock-hard tent in his sweatpants. It throbbed visibly, pre-cum already soaking the fabric. He should run—apologize, die of embarrassment—but his feet wouldn't move. Mia's eyes snapped open, locking onto him. Instead of screaming, a wicked smile curled her glossy lips. She didn't stop. The vibrator whirred louder as she circled her clit, her free hand pinching a nipple.

"Alex? Holy shit, don't just stand there gawking, perv," she purred, voice husky with lust. "Close the door and watch. You look like you need this more than I do."

His mouth went dry, cock pulsing so hard it hurt. "M-Mia, I... I'm sorry, I didn't mean—" But he stepped inside, shutting the door with a click, eyes glued to her soaked cunt as juices trailed down her thighs.

"Shy little virgin stepbro walks in on me getting off? Perfect timing," she teased, spreading her pussy lips wider with her fingers, the vibrator dipping inside her tight hole. "Bet you've never seen a real pussy before. Stroke that hard cock for me, Alex. Show sis what you're packing."

Alex's hands shook as he shoved down his sweatpants, his thick 7-inch virgin dick springing free, veins bulging, head shiny with pre-cum. He wrapped his fist around it, groaning at the first stroke. Mia's eyes devoured him, her own hand working the vibe faster, fucking herself with wet squelches that filled the room.

Mia kept the vibrator pressed to her clit, the buzz mixing with her filthy moans as she coached him. "That's it, baby bro. Grip it tighter—up and down, just like that. Imagine it's my juicy cunt squeezing you." Her eyes locked on his, dark with mutual lust, pupils blown wide. Alex pumped faster, mesmerized by the way her tits jiggled, her pussy clenching around nothing now as she pulled the vibe out, strings of her cream coating it. "Faster, Alex. Make that virgin cock leak for me. You wanna cum watching your stepsis finger-fuck herself?"

He nodded, whimpering, hips thrusting into his fist. Pre-cum dripped in thick ropes onto her floor. The air thickened with her musky scent, his balls aching. Mia's breaths came in pants, her free hand tweaking her nipples, pulling them long and hard. "God, you're so fucking cute when you're horny. Look at that fat cockhead—purple and throbbing. Bet it's never been milked by a real girl."

Their stares burned into each other, lust crackling like electricity. Alex's strokes matched her vibe's rhythm, her moans syncing with his grunts. She was close—he could see her thighs quivering, pussy fluttering. But she stopped suddenly, tossing the vibrator aside with a wet plop. "Enough watching. Get over here, stepbro."