Not-So-Little Stepsister Shrunken First Semester chapter 3 by maximally

 

When Max looked up, he felt his stomach drop straight through the coffee table. “Oh, fuck,” he whimpered under his breath.

 

There she was—leaning in the doorway like she owned the whole school, loudly chewing gum and doom-scrolling TikTok with the volume cranked up. At five-foot-seven, she had never been short, but from Max’s new three-inch perspective, she might as well have been a particularly bottom-heavy mall goth kaiju. Isabella “Izzy” Vasquez-Calhoun, his eighteen-year-old stepsister, looked every inch the bratty bully he remembered from back home in Sunnyvale: straight black hair with an emo fringe, silver piercings, black tank top, cut-off shorts and black, scuffed Converse barely containing the big curves and bigger attitude she’d inherited straight from her mom.

 

Before Max could even process how unlucky this was, Izzy’s bright brown eyes flicked down and locked onto him.

 

“…Holy shit,” she blurted, pocketing her phone.

 

She crossed the room in three long strides and dropped into a crouch so fast that the rush of air nearly knocked him flat. Instantly, he was hit with a familiar wave of Izzy: minty gum, Monster energy, mango vape cartridges, and the greasy, earthy funk of a girl who lived on gas station snacks and Taco Bell and never gave a shit about the consequences. 

 

The more she sized him up, the more her disbelief gave way to amusement. “Max?”

 

He swallowed hard and tried to cover his groin with both hands. “Izzy.”

 

“Sup, big bro?" She grinned. "Or should I say… lil bro?”

 

Max’s brain went into full panic mode. Of all the people who could have found him right now, Izzy was the worst. She’d spent four years making his life hell: waking him up most mornings by farting in his face, forcing him to rub her feet most afternoons after school, sitting on his lap for every family movie night, using his bedroom as one big laundry bin for her dirty underwear and socks, and subjecting him to humiliating games of truth or dare with her friends on the weekends. No wonder he lacked self-esteem. The only upside of his last month at Ventus had been getting away from her and her mom, Victoria. Now, though, seeing her grinning down at him like she’d just won the lottery, he couldn’t shake the feeling that his luck had just run out for good.

 

“This is the best thing that’s ever happened,” Izzy declared, not even trying to hide her delight. “Okay, spill it. What the hell did you do to end up like this?”

 

“I—I don’t know." He stammered, face burning. "The last thing I remember is going to a party last night with my roommate, and then—”

 

Izzy cut him off with a hard scoff. “You? At a party?” She arched a pierced eyebrow, still crouched over him like a cat toying with a mouse. “The shrinking thing makes more sense than that.”

 

Max grimaced. The words stung exactly the way they were meant to. After years of forced family life, Izzy was a master at getting under his skin. “F-fuck you, Iz,” he blurted.

 

“You wish,” Izzy shot back, leaning in so close her breath felt like a furnace. She tilted her head, studying him with mock thoughtfulness. “Then again… I guess that would explain it.”

 

Max crossed his arms. “Explain what?”

 

“Y’know.” She gestured at him, smirk growing. “This. Maybe some girl really did invite your pathetic ass to a party, just so she could spike your drink with shrinking serum and keep you as her own personal toy.”

 

Max blinked. “Shrinking… serum?”

 

Izzy let out a sharp, mocking laugh, rolling her eyes. "God, you are so fucking sheltered. Do you even realize how lucky you are to be standing here right now, and not getting turned into ass fat in some sorority girl's stomach?" She tapped one black-nailed finger hard against her chin. "Alright, this is going to blow your tiny little brain, so try not to fall behind."

 

She paused for effect, clearly enjoying the way he hung on every word.

 

“So, it’s this chemical. I’d never heard of it until mom told me about it back, when I started getting invited to parties. I guess it was all over the place when she was modeling. Like coke in the 80s, or whatever.” She shrugged. “Long story short… One drop, you lose a couple inches. Two drops, it’s more like a couple feet. Basically, that ‘Mountain Lady’ shit I used to catch you jacking off to.” She shot him a knowing look. “Only catch? It’s permanent.”

 

"Don't fuck with me, Iz." Max stared, caught between disbelief and desperation. "This isn't funny."

 

"Max." Izzy's grin stayed razor-sharp. “This is literally the one time I’m not fucking with you.”

 

Max dropped to his knees on the coffee table, the plywood cold and unforgiving against his bare skin. Permanent. The word hit like a sledgehammer. No cure. No reset button. College—his one shot at freedom—gone. All that was left was home with Victoria and Izzy, where the smothering and the teasing would be a hundred times worse.

 

 

Before he could spiral any further, a thick, hot, musky wall of stink crashed over the table, drowning him in taco-scented hell. Greasy, wet, pure Izzy—like someone had microwaved a burrito in a gym sock and shoved it up his nose. Max hacked and blinked away tears, but the smell stuck to him like a curse, thick enough to taste.

 

Above him, Izzy’s face twisted into smug triumph. “Aww, am I too stinky, lil’ bro?” She didn’t do anything to wave the smell away. She never did. Instead, she just stayed crouched there, letting it linger over him like a personal gift.

He bit back the urge to remind her she was only his 'little' sister by five days. That always ended with him eating sock lint or worse. Why was she even here instead of Victoria, anyway? Even their Aunt Fanny or Abuela Lupe both lived way closer, down in LA. Back home, asking Izzy why she had barged into his room usually meant he would end up rubbing her feet or getting a faceful of fart as “punishment.” But right now, curiosity and desperation were winning.

 

Still coughing, he forced the question out. “Izzy… why are you even here?”

 

She rocked back on her heels, still looming over him, and popped her gum again. “Oh, right. That.” Her voice went fake-innocent. “While you were off playing big fancy college boy, I threw a party. Like, a real one. Mom was out of town, so I figured, why not? Long story short, the neighbors freaked out, one of them called the cops, and the cops called Mom. Obviously, she lost her shit. Grounded me from everything except this little six-hour drive down here to drop off your care package.” She waved at a duffel bag by the door that Max hadn’t even noticed. “She was supposed to bring it for Parents’ Weekend, but something came up at the last minute. So guess who got voluntold?”

 

Izzy’s smirk sharpened. “My plan was to ruin your weekend as payback. Hide your stuff, spread rumors, maybe fuck your roommate. But this?” She waved at his tiny naked body with both hands like she was presenting a prize. “This is fuckin’ next level, bro.”

 

Max could see the gears turning in her head, and they never spun in his favor. “Izzy, please. Just... go easy on me for once. I didn’t even do anything this time.”

 

Izzy's only response was another laugh. “Go easy? Max, I’ve been stuck at home for a month with nothing to do. Most of my friends are off at school, my job's a total joke, and Mom’s been smothering me nonstop since you left.” For a second, she almost looked annoyed, but then her voice softened with something almost nostalgic. “I never thought I’d say this, but I actually missed having you around.” Her grin returned. “Now I get the best of both worlds.”

 

Max felt an involuntary shiver run down his spine. “What… what do you mean?”

 

Izzy’s expression shifted, almost businesslike, though the mischievous spark never left. “Well… obviously, you can’t stay at school alone like this. So here’s what we’re gonna do. I’m gonna give you my phone, you’re gonna call Mom… and you’re gonna ask her if I can be your official on-campus chaperone.”

 

Max swallowed hard. “What?”

 

“You heard me.” Izzy chuckled. “I’ll take you to classes, live in your room, bring you to parties on the weekends… We’ll both get the full college experience. Everybody wins.” She said it with a completely straight face, but they both knew exactly what that “experience” would look like: Max spending most of his time tucked up her ass, crammed in her shoe, or trapped wherever her mood decided.

 

Max considered the implications and felt his stomach twist even tighter. His mouth went dry. “There’s… there’s got to be another option, right?”

 

Izzy’s grin got even more wicked. “Sure. I could tell Mom you just wanna give up and come home. She’d probably love to have you back like this. But, fair warning, I’d be pretty pissed if you blew this for me. Just sayin’.”

 

She stood up slowly, stretching her thick thighs and letting that massive ass shift inside her shorts. The fart cloud still hung heavy over the coffee table, warm and impossible to escape.

 

Max stared up at his giant stepsister, heart hammering. Two nightmare paths stretched out in front of him: let Izzy become his official campus babysitter, or give up and slip straight back into the smothering hell he had tried so hard to escape—plus whatever fresh hell Izzy would cook up for daring to oppose her.

 

The choice felt impossible. And the way she was looking down at him—like she had him right where she'd always wanted him—made it even worse.