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."