A/N: someone requested this on my ao3 account and i liked it so here it is! in this fic, mike and el are new stepsiblings and el moves into his house. her bedroom window happens to face his (i have an explanation for that weird architecture XD) and mike catches her undressing in the window all the time...
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It had been nearly half a year since El Hopper had officially become his stepsister and moved into the room down the hall.
She and her father had lived in the town next to Hawkins, and El had gone to a different high school, so Mike had never actually really met El or spent much time with her until their parents married and El and her dad, Jim Hopper, had moved in.
She seemed nice enough, always smiling and polite to Mike when they met, but she didn't talk much, and he was so socially awkward besides. It always seemed like there was some weird tension between them, but maybe it was just in Mike's head.
She was so cute though. Perky and petite, like Mike could just scoop her up, but somehow with impossibly long shapely legs, with the creamiest thighs that she always showed off wearing the shortest miniskirts Mike had ever seen. Whenever she bounced around in them it was almost like they were just a slight movement away from riding up her ass and giving Mike a peek at her pussy, though the few times Mike did see anything, she was always wearing panties, of course, cute little white or pink cotton panties that seemed just one size too small for her, sometimes riding up her ass cheek a little, and Mike sometimes jerked off in his bedroom at night, thinking about how he wished he were those panties, wedged in deeply between the slick folds of her pussy lips.
But El Hopper was definitely the type of girl who would never look twice at Mike in school, let alone even talk to him if not for the fact that her dad had now married his mom.
Six agonizing months of sharing the same house with her, and to make matters worse (or better?) his mom had put her in their former guest room, which through the coincidence of the Wheeler's odd home design, had a window that directly faced Mike's room. Their home had a garage that was tucked into a little courtyard, and the bedrooms had been built to wrap around that courtyard, so that Mike's room was on the west side of the yard and El's was on the east. Their large bedroom windows faced each other across the courtyard, and El never had her blinds shut, like ever.
Mike was sure she was doing it to drive him crazy.
At first he tried not to look. It was an invasion of her privacy and it was the right thing not to look and he had to be a gentleman and all but…
But she kept doing it.
Every night, and every morning, El would walk right in front of her window and change her clothes. Her mirror wasn't even anywhere near the window. Mike knew from being in the guestroom before that the closet had mirrors attached and they were towards the back of the room, away from the windows. El would walk from the closet to retrieve clothes, then to the window, where'd slowly peel off all her clothes, one by one, even her bra and panties, before putting new clothes on and then walk all the way back to the closet and mirror to take a look. Sometimes she would march back to the window, looking unhappy and carrying a set of new clothes, and do it all over again before presumably going back to the mirror to check out her new look.
Mike wondered why she didn't just stay by the closet and mirror and do it all there, instead of walking all the way back and forth just to change by the window.
Maybe she was doing it on purpose.
Maybe she wanted him to see.
No. No way, that couldn't be it. El was a nice girl and he was just way too horny and had seen one too many porn videos and this wasn't a porno. This was real life, and El definitely wasn't doing it to make his dick hard. She definitely wasn't doing it as a silent way of begging him to fuck her, to just march down the hall one day and shut her bedroom door and make her bounce on his dick until they both came and she was covered in his cum, from her eyelashes to her tits to her tight little pussy –
Mike slammed his laptop shut. He had given up trying to concentrate on this essay. There was no way that was happening now. In fact, his grades had even started slipping a little since El had moved in; he was just in a constant state of horniness, and his room used to be his sanctuary, the one place he could get away from the noise and distraction and just work, but now it seemed liked all it took was one glimpse of El in her own bedroom, minding her own business, and it all went out the damn window and straight into his hard dick.
The front door slammed downstairs and Mike knew it must be El coming from cheer practice. Her dad and his mom still had work for a few more hours, and Mike recognized the shuffle of El's feet as she went up the stairs and into her bedroom. In his head he saw her bounce up the steps, her little pleated cheerleading skirt bouncing up and down gently against her plump little ass, her round tits jiggling around underneath her top too –
Another door banged shut again – her bedroom door this time – and right on cue El appeared at her bedroom window.
Mike's face felt hot, and he popped open his laptop again.
He wasn't going to look. He was just going to mind his own damn business and work on his paper.
His head wasn't turning away to face the screen though. Mike found that it was still where it had been before, staring right in the direction of El's window.
She took her backpack off first, letting it drop unceremoniously to the floor. She had already shrugged off her shoes and had started to tug her top off. She crossed her arms to pull the fabric up and over her head; apparently the fit was a little too tight though because she had to wiggle around a little bit, which caused her soft tits to bounce up and down gently until she finally got the thing over her head, tossing it on her bed.
El had been sideways to the mirror up until that point, but as she reached to unclasp her bra, she turned to face the window directly. For a split second, Mike panicked, thinking she had seen him, but her eyes were downcast and focused elsewhere, not looking at the window at all.
Absently, El's hand went to the front of her bra, which Mike thought was strange since girls' bras unhooked in the back, but apparently not the bra El was wearing. The clasp was right on the front, nestled between her two creamy mounds, and for a second or so, El fidgeted with the clasp a little, squeezing her fat tits together as she struggled to unclasp her own bra.
Mike's hand went to his cock, already hard as hell and leaking pre-cum at the tip, and he began to stroke himself. How could a girl have this much trouble unclasping a bra? And one with the hook in the front, no less. Didn't girls do this everyday? Surely El was doing this on purpose, so she could have an excuse to jiggle her tits and press them together right in front of him.
He fisted his cock harder at the thought, that El was doing all of this, every day multiple times a day, knowing that he was watching, wanting him to jerk off to her. His cock was fully out of his pants now, and Mike stroked himself up and down at the sight of El undressing, pausing to rub softly at his swollen tip and spreading pre-cum all up and down his shaft to make the glide easier.
She finally managed to unclasp the bra, pushing it apart to reveal her full, fat tits popping out. She was easily a D cup, her breasts so mouthwateringly soft and natural, with cute little pink nipples that seemed to wink at him from the middle of her wide, swollen areolas.
Mike started to stroke himself faster, his breathing coming in quick, rapid succession. He couldn't believe he was jerking off (again) to his stepsister's tits, watching her secretly undress.
El had moved onto her skirt, shimmying it down her legs in a way that was both cute and sexy. Underneath she had on cute, almost see-through white cotton panties, which she also slowly peeled off, exposing her hairless pussy to him.
Then, she turned her back to the window, so that he saw her bare plump little ass, and bent all the way down.
Fuck.
That exposed her entire slit to him, from her pink pussy lips to her tight asshole – and was that a trick of the light? Or was her pussy glistening a bit, like she was wet or something - ?
Mike thrusted hard into his hand, imagining that it was El's small, sticky pussy that he was thrusting it into instead, ramming his dick into her so hard she screamed, giving her what he knew she wanted, what he knew her cunt needed – his hard cock and his thick cum.
El straightened up again, shimmying into some new panties. Except they weren't really panties. These ones didn't cover her bare ass at all. There was only a thin lacey string that disappeared between her ass cheeks. El tucked the string into place and then she – and Mike could hardly believe it - and then she ran her hands down her own ass, and spanked own her ass cheek playfully and Mike could see the little red handprint it left and how her ass bounced up and down with the force of El's smack.
Mike let out a little moan, he couldn't help it. His fist was a blur on his own cock, pumping himself furiously, his balls tightening up. Who does that? She had to know he was watching and she had to be doing that to make him cum.
It wasn't even dark inside Mike's bedroom. She could probably see him in here same as he saw her. He had never tried to hide and sneak around about it, feeling that that somehow would make it even more pervy. If she saw him, she saw him – and he would have to face the consequences, whatever they may be. Maybe she'd scream and cry and tell her dad and Mike would get his ass kicked out of the house, or maybe she'd kick his ass herself, or maybe she'd come over and bend down and suck his dick and let him cum all over her soft tits….
El started putting on some clothes again. A cute white miniskirt over the thong. And then a little tank top. She hadn't even put a bra back on. Her huge tits were sitting pretty in that tank top with nothing between them and the fabric of her shirt.
Then Mike remembered. El had said last night at dinner, that she had a date tonight with some fucking jock or other, Mike couldn't even remember the name. And fuck, she was going to go out like that? She was going to go see this guy with no bra on and a fucking thong and that was it?
Fuck, she was probably gonna suck his cock and let him push up her top and titfuck her and then bend her over and fuck her in that thong in his stupid jock car and Mike wished it was him, in his mind's eye it was him, fucking her doggy style in his car and making her scream until he spurted all of his sticky cum onto that thong string and made her wear it again, so that his semen would be nestled in between her ass cheeks all the way back to their parents house.
Mike was cumming hard all over his hand, ropes and ropes of it gushing out of the tip of his cock all over his fist – God he'd made a mess, all because of El, his sexy little stepsister, she needed his cock so bad, and he was going to give it to her –
"Mike, can you tell dad I'll be out – oh!" El was standing in his doorway, her hand on the knob, staring directly at his cum-covered cock with wide eyes. "Oh, oh my gosh. I'm so sorry, I-I should have knocked, I'll…" El had already slammed the door shut again, and Mike could hear her muffled voice through the closed door. "Um, tell dad I'm gonna be out with Trevor tonight so don't wait up for dinner. I, um, sorry again!"
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A/N: i wanna note that el IS teasing mike on purpose and she DOES want to tempt him so much that he'll finally lose control and come over and fuck her. i think the concept of some things are hot (like dominance, mike watching el etc) but only in a role play scenario. i wanna be super clear that in all of my fics, both parties want it. i don't mess with nonconsent (and that includes doing things without a person genuinely knowing). anyway hope yall liked it.
there is actually going to be a part 2 to this (where el will be exposed...no pun intended)...stay tuned...
and send more prompts!
sorry if this chapter has weird formatting. i'm absolutely fed up with how archaic 's uploading system is.
