Rinsing complete, Alex glanced at the clock, knowing supper waited. He snatched her towel and wrapped it low around her hips, leaving her chest bare and glistening as she reached for another to dry her hair.
"You should wrap the towel around my chest by now, Alex," Maria teased, a playful glint in her eyes. "I'm over eighteen."
"Your chest isn't big enough for that," he shot back with a grin, his eyes lingering on her exposed nipples. "Even at thirty, it wouldn't hold tightly without something to grip onto."
"Come on, let's dress before Mom starts yelling." Still naked, his cock half-hard and bobbing as he moved, Alex took the towel from her hands. He rubbed it over her hair, pressing firmly and forcing her head to tilt down slightly. She stood there, her gaze level with his arousal, so close that one firm push on her shoulder would drop her to her knees, lips parting for him. The thought hung heavy, curiosity flickering. What would she do if he tested her obedience right then?
Maria's skin glowed under the lingering steam, her cheeks flushed a deep pink, not just from the heat enveloping them, but from the forbidden thrill pulsing through her veins. She knew this wasn't ordinary, sharing a shower with her stepbrother, bodies slick and bare in the cascade of water. But Alex wasn't ordinary. No one like him was, scarred by that nightmare of a vaccine that had twisted so many lives
Her mind drifted back, unbidden, to that sweltering day in the family sauna at the local spa. Harry, her stepdad, had pulled her aside, treating her like the adult she was becoming. His voice stayed low and grave as sweat beaded on his brow. "Listen, Maria," he'd said, his eyes locking onto hers with that protective fire. "Never trust anyone blindly, especially not some so-called expert. That lunatic in the Association pushed his vaccine on kids born after the world finally steadied, thinking he knew better. Alex got hit hard, like so many others."
He'd leaned in closer, the air thick with unspoken rage. "Short version: animal tests wiped out every damn subject, but he rushed to mass production anyway. Within a week of the shots, kids like Alex started shutting down, lights flickering out in their eyes, bodies failing. We parents? We didn't wait for courts or excuses. We took matters into our own hands."
Maria could still picture the story unfolding in her mind's eye, Harry's words painting it vivid: cornering the madman in his lab, his frantic denials spilling out as they dragged the truth from him. "No connection to my vaccine," he'd spat, but the notebook they'd seized told another tale, pages crammed with horrors. Experiments on orphans, substances pumped into tiny veins that snaked through blood to the brain, frying circuits no one understood. The vaccine hadn't saved a soul; it had culled one percent outright, leaving survivors like Alex forever altered in differing ways.
"We showed the world what blind faith costs," Harry had growled, a grim satisfaction in his tone. "Burned him alive, torched his research, made sure a real family-focused schedule replaced his poison. And we hunted down every enabler who knew and let it happen. Family looks out for family, Maria. Politicians lie, doctors betray. Only we have each other's backs."
That conversation had reshaped her, binding her tighter to Alex and the family. The spa visits became ritual, steam and sweat drawing them closer, vulnerabilities exposed in the haze. She'd caught Alex's gaze lingering on her mom during those sessions, tracing the sway of her hips on the treadmill outside the glass walls. Envy twisted in Maria's gut like a knife. Why her mom? Why not her? Until it clicked, watching him fixate on that rounded ass flexing with each stride. It wasn't the curves up top. It was the power below, the thick, commanding swell.
So she'd changed. Laced up her sneakers and hit the pavement, lungs burning as she ran miles. Joined soccer for the sprints and tackles, track for the endurance, the gym for targeted squats and lunges that made her thighs burn and her glutes clench. Extra sets on the lower body, feeling the muscle build, the fat redistribute into something plush yet firm. Now, months later, she saw the payoff in the mirror: thighs toned and thick, pressing together with a subtle friction that sent sparks up her spine; an ass that filled out her shorts, rounded and inviting, begging for hands to grip.
And here, in the bath, she felt it proven. Alex's cock nestled firm between her ass and thighs as she leaned back into him earlier, the hot water amplifying every shift, every subtle grind. His body heat had seeped into her, that altered intensity of his radiating like a warning and a promise. The flush on her face deepened, her small nipples tightening under the memory's weight, arousal coiling low in her belly. He doted on her now, his touches lingering longer, eyes devouring her changes. What would Harry say if he knew how close they'd grown, how her obedience had evolved into this electric pull, her body sculpted not just for sport, but for him?
Alex and Maria's bond changed that very day. She softened toward him, embracing his quiet ways instead of pushing. She'd always wanted to shield him after that, to be his partner, but Alex never truly needed her. As kids, anyone who tormented him too harshly ended up on the ground, bruised and regretting it. Understanding clicked. He could have bloodied her back then.
First year of junior high brought new challenges as she watched Alex walk through the crowded halls. They mocked him silently as a dreamer, space case, mocking his intelligence. Always lost in thoughts of his own, he'd be eaten first if a gate tore open nearby. Alex tried getting along well with everyone, always respectful, until one bold kid shoved Alex against his cold metal locker. Maria watched from the shadows as fury ignited in her brother's eyes. He seized the bully's collar, slamming his own fist, still clutching the heavy lock, into the kid's jaw. With a swift twist, Alex crammed him into the locker and snapped it shut, the click echoing like a final verdict. He turned and strode away, backpack slung over his shoulder, leaving whispers in his wake.
No one dared approach him after that. The principal summoned a welder to slice through the unyielding lock, the sparks illuminating the captured boy's pale face. Cameras had caught every moment: the shove, the strike, the young teenager being stuffed brutally into Alex's locker. The bully vanished from school, expelled in disgrace in his piss-stained pants, while Alex rose as a legend, his name a murmur of respect and quiet fear through those teenage years.
Having separated to their own rooms to change into casual clothes, Alex and his sister headed downstairs to have supper with Luna. The aroma of home-cooked warmth filled the air, drawing them together.
Luna's face lit up at the sight of the siblings side by side on the stairs, her smile trembling with joy. Tiny tears glistened at the edges of her eyes, a silent tribute to Harry, who would have beamed at this harmony after so many storms.
Knowing what Alex's day was going to be like tomorrow, Luna didn't pester him with a bunch of questions, knowing that he doesn't like to speak very much. The only time it seems that Alex does is in moments that matter.