This is the same Mileven from my Thunderbolt and Lightning story where she was adopted by the Wheelers after season one. It is an AU fic about fictitious characters who ARE NOT ACTUALLY BROTHER AND SISTER, despite what Karen Wheeler may want to think. Careful what you wish for, Karen. This one is super smutty.

Halloween had descended upon Hawkins and the Wheeler household was rapt with anticipation. Karen Wheeler had made every attempt to get El and Mike to go as Raggedy Ann and Andy.

"But you'll be so cute! Brother and sister dolls!" Karen had exclaimed.

"Ugh. Mom. We are not brother and sister. We're never gonna ride that train," Mike complained. Karen had successfully gotten everyone outside of their family and closest friends to think of El as her new daughter and therefore Mike's new sister but he was never going to subscribe to that notion. "Besides, we already have the perfect costumes."

They were going as Beetlejuice and Lydia Deetz. Mike had enlisted Joyce Byers to help with their costumes, knowing that she could sew.

In the basement, as they applied the final touches to their costumes, Mike had an idea. He was supposed to be acting like El's brother but he was pretty sure brothers didn't make their sisters come hard every chance they got. But it had been almost three weeks since they'd last been alone together and had last been able to fully pleasure the other. Sure, there had been a lot of secret under the dining table groping and some lingering kisses in the bathroom but they hadn't had the chance to really experience each other for far too long.

"Hey, what if we make it a game? Whoever gets the first Three Musketeers bar has to lose their underwear. And then at the end of the night whoever has the most of them has to be the slave and do whatever the other person says? I say that because it's Dustin's favorite."

"Hmmm." El was in the middle of getting ready, her red lace dress emulating a cheaper version of Lydia Deetz from Beetlejuice. She put it on in front of Mike, his mother unaware that he had decided to join her inside the bathroom where she was changing. He was already in his Beetlejuice costume and despite not wearing a wig to completely capture the look, he was pretty close to the original character. Hot, even, El had previously thought upon seeing him.

"Sounds good," her previously narrowed eyes were now sparkling, the corners of her mouth sliding upward as she closed the gap between them and pressed a kiss to his smooth cheek.

She couldn't wait for the game to start.

Mike smiled. He had known she'd be up for his idea. She always did let him blaze the trails.

"You look amazing. Are you ready? We'll probably meet up with everyone else before too long."

Mike came closer to her, lifting her skirt and running his hand along her ass.

"Hope they don't notice you aren't wearing panties," he whispered mischievously in her ear, giving her ass a light squeeze as he spoke.

"Who said I'll be the one without underwear?" She feigned a pout, but her body gave in and glued to Mike's anyway. Her head rested on his shoulder as he cupped and squeezed her bottom and she sighed contently, praying that his mother wasn't going to barge in on them. She never did, but they were still paranoid sometimes.

"Maybe you'll get a Three Musketeers bar first and then you'll have to worry about your penis rubbing against these pants," El grinned. "I'm gonna have to kiss it to make it feel better," she cooed over his neck, her mouth pressing onto the soft skin while her hand rubbed his limp dick through the striped pants he was wearing.

Mike was only playing. He hadn't meant to use any sort of force, but when he put his arms around her and pretended to rip the bodice of her dress he actually did tear the material and El's back was exposed.

"What did you do?" She cried. "Now my costume is ruined. It was so pretty." She was about to really cry.

Mike felt like an asshole.

"I'm so sorry, El. I didn't mean to! Nancy is still here, let me see if she has any ideas." Mike, feeling sick, ran to find his sensible sister.

Nancy just shook her head in believable disbelief. It was such a Mike thing to have happened. She came up with a compromise to just wear their normal clothing and she could do zombie makeup for them. She still had enough time before she had to take Holly trick-or-treating.

Seeing the worried and very apologetic look on Mike's face as he told her the plan, El wasn't angry with him. She only wanted to spend Halloween with the sweetest boy in the world. Mike changed into jeans and a Hawkins High School t-shirt while El looked like a private school student, short plaid skirt, long socks…the whole deal.

With their costumes changed and possibly the best rushed at-home makeup job ever, Mike and El, now zombified, headed out into the streets with their pillowcases in tow. They knew there was a good chance that if they ran into their friends they might not be recognized.

"Remember our game," Mike reminded her as they neared the door of their first house. "First to get a Three Musketeers loses their underwear."

"And no cheating," El beamed and rubbed her shoulder against Mike. They weren't allowed to display any sort of physical contact when they were outside, and the fact that they had costumes on didn't exactly flip a switch that made them jump each other on the street just because people might not recognize them. Their friends might still be able to.

Of course, that doubt was cleared up when they ran into Will and Dustin. They were coming from the opposite direction and now that they were less than ten feet away, El murmured to Mike.

"Don't greet them. Let's see if they know it's us."

Her muffled giggle went unnoticed along with anything else related to her and Mike. Their two friends were talking about unintelligible things as they walked right past them.

El gasped and looked at her zombie partner.

"They didn't even know it was us!" Mike grinned. "Come on, let's get some candy." Mike let El knock on the door. To his dismay, they each got fun-size Snickers bars.

"Damn. Well maybe the next house will make you lose your panties." No one was really around so as they descended the steps Mike rather suavely lifted the back of El's skirt, wanting to see what she was wearing underneath.

"Oh my god. You're gonna kill me with those."

"I figured you needed easy access in case you are the one who loses," she teased, letting Mike know that she was open to anything he wanted to do tonight. There was only so much she could endure after not being able to get away from his family and spend some time alone with the boy she loved so much.

His fingers hooked around the hem or her red lace thong and she deliberately took a step forward so the fabric could tease her front. It made her want to moan, but they were still in the street and she'd learned enough rules throughout the years to know that some things weren't allowed. She couldn't promise not to ignore some of them tonight, though.

"Okay, let's calm down," she smiled and dared to grab his hand until they reached the next house. Nobody could recognize them anyway.

She put on a bright smile after chanting the usual trick or treat and once the old lady whose house they were currently trick-or-treating left to bring their candies, she sneaked her hand to Mike's crotch. She kept it there, Mike's pillowcase covering the way her fingers cupped his cock even when the woman came back with their sweets. She wasn't going to let Mike have the upper hand at teasing.

Mike was already having the best Halloween ever. He couldn't believe El's boldness; keeping her hand on his crotch, clutching the fabric of his pants around his stiffening cock. He didn't even care that he was going to have to walk around with his pillowcase in front of him.

The lady came back with her bowl of candy. Mike was overjoyed to see that it contained Milk Duds and Three Musketeers.

"Ooh, I love Milk Duds!" Mike exclaimed. The lady dropped two little yellow boxes into his bag, and then a Three Musketeers for El.

Back on the sidewalk, Mike gloated a little bit.

"Looks like you lost." He was close to her ear, wanting to be extra touchy-feely tonight. "Time to shimmy out of that thong," he whispered.

"You...mouthbreather." The feigned annoyance she tried to capture in the tone she used didn't work on Mike. She was trying not smile, her lips pouting to keep her mouth from curving upward, but the twinkle in her eyes gave her away anyway.

Looking around the street, she found the perfect spot - a nearby sturdy tree, large enough to keep both of their bodies away from anyone's eyes. Unless, of course, they were on the opposite end of the street. She didn't care, though, her hand tugging on Mike's until they reached their wood shield and she took the thong off. It went down her legs smoothly and she made sure to lift her skirt up before they left, spreading her thighs apart and running her fingers around her shaved pussy.

"I miss you here," she whispered and grabbed Mike's wrist until his ice cold fingers rested on her bare front. It sent shivers down her spine and she sighed in content, but as soon as he tried to drag his digits down to her hole she took a step back.

"No. I'm not ready yet."

The sad look on Mike's face melted her heart right away, and she was quick to console him by folding her panties into a ball and slipping them inside the front pocket of his jeans.

"Your souvenir for tonight," she explained.

What Mike wanted to do was push her against the tree, lift her skirt, and show her how much he missed her too. Just the little scene of her taking the thong off had been enough to turn his stiffening dick into his rock hard dick. He tugged her hand over the zipper of his pants.

"I miss you here too. Can you feel how much?" He moved her hand over his bulge. She needed little coaxing and quickly started to rub him through the fabric.

"Oh, fuck. Touch it for real."

She didn't need to be told twice. Her hand sneaked inside his pants and briefs within seconds and she took a hold of his soft cock, her fist pumping him as much as the confined space allowed.

"After you went to bed last night...I wanted to come to your room and suck your dick until you woke up. But your dad fell asleep on the La-Z-Boy and I was scared."

Her sad confession didn't leave Mike unimpressed, his cock already starting to harden more and throb under her touch and words.

"So I just touched myse-"

She stopped mid-sentence and retracted her hand in a split second when the noises made by some loud kids approaching them reached her ears.

Mike was a little pissed that they had been interrupted but now all he could think of was El in the basement touching herself. Being startled by the passing group of kids had caused her to quickly remove her hand. His zipper was still down. He decided to leave it that way.

They continued down the sidewalk, Mike constantly mindful that she was naked underneath her skirt.

"So...when you touch yourself. How do you like to do it?" He spoke quietly. He wanted to get a mental picture in case they had to go more weeks or even longer before they could do the things they really wanted to do. He wasn't sure she'd tell him but he thought it couldn't hurt to ask.

"Just like you taught me," she admitted unabashedly, a sudden memory of Mike teaching her about sex and masturbation flashing before her eyes.

"But it changed a little. I don't just touch myself on the outside. I do at first, but then I wait until I'm wet and I can slip my fingers in. It's not the same as when you do it or when your penis is inside, but it feels nice. And I pretend it's you."

Her shoulders shrugged as she gave Mike an innocent look, even though she knew exactly what her words were doing to him.

After visiting several more houses they decided to walk hand in hand, their fingers intertwined as if they were made that way. Being able to finally showcase her love for Mike in the public eye made El feel over the top and he didn't miss the excitement in the way she swung their arms back and forth and glanced at him from time to time.

Their stop at the next house was different, though, and as a couple opened the door for them, El brought Mike's hand behind her back and under her skirt until it rested down her crack, his fingertips tracing her pussy. She seemed unfazed, despite how wet her folds were.

Mike didn't even notice what kind of candy he got. He was too focused on the feeling of El's smooth skin as his fingers explored. She was bare, he knew that, but feeling it while he was standing on the porch of a neighbor begging for candy was something altogether different. Running his hand over her, he let his middle finger slip inside while his others stayed on her lips. He could tell that soon her inner thighs would be slick.

He withdrew his hand in time for them to bounce down the steps.

"I think we're gonna have to find somewhere. I want to put my head under your skirt."

El had to bite her lip to stop herself from saying anything inappropriate as a bunch of their classmates walked past them.

But as soon as the area seemed clear, apart from some unrecognizable silhouettes farther away from them, she dragged Mike behind a trash bin and lifted her skirt up.

"Just lick me a little. And put your tongue in. I want you to fuck me with it. Just a little, please," she whispered exasperatedly, her hips pushing forward as she kept her pussy lips apart with the help of her fingers.

"If we hurry up I can take you in my mouth a few times," she offered right after, not wanting to make Mike feel as if she only cared about her own relief.

Mike lowered to his knees behind the trashcan. He held on to El's thighs and started to lick her pussy. He did as she'd asked, just licking her a little. He knew the light touches his tongue made would only cause her to be more turned on.

He heard her moan softly so he moved his tongue inside, gripping her thighs to steady himself as he started tongue fucking her. He went as deep as he could. His entire face was plastered to her pussy and causing him to suck it every time he moved his tongue inside her.

"Like that?" He asked. She had said only a little and while he'd be fine to spend the remainder of the night just eating her out, he wanted her to get everything out of Halloween.

"Because I can do more. Just tell me."

"More," she whimpered and buried her hand in Mike's hair to guide him back to her dripping front. "Just a little bit more, I promise."

Mike was eager. He loved it when she told him what she wanted. He let her guide him back in. This time he held on to her ass as he sucked on her front. She was rolling her hips into his face and he could hear her panting from his place under her skirt. He squeezed her ass cheeks, parting them slightly, and then holding them apart he ran his tongue all the way down, across her perineum and as close to her asshole as he could reach from where he was. Then his tongue went back to her cunt, diving in. His nose was brushing and bumping her clit as he ravaged her pussy with his mouth.

"Mike-" El sobbed, her pulse racing with every swipe of his tongue across her holes.

She glanced around, scanning their surroundings to see if anyone was approaching and, much to her dismay, the far away silhouettes were getting bigger in size. People were getting closer.

In a swift movement, she pulled Mike away from her thighs and steadied him on his feet until their positions reversed. She was the one on her knees this time and she used her powers to drop his pants and briefs right below his erect cock.

"Fuck my mouth if you want," she reassured him before wrapping her wet lips around his girth and bobbing her head expertly. Blowing Mike under stressful circumstances had become second nature to her over the years.

Mike could hear the approaching crowd so he leaned forward, holding on to the rim of the trashcan. He most definitely looked like someone throwing up into it so he used that, moaning as El's tongue massaged and sucked his hard cock. He looked like he was retching to any passersby, but really he was in bliss, rocking his hips into her face. Her mouth was a vacuum seal around his throbbing dick.

No one seemed to pay them any attention so after the crowd passed Mike held El's face in his hands, looking down at her.

"You are so good at sucking my cock. You like doing it, don't you? I like watching you do it and how your mouth always waters for it."

She was looking up at him as she circled and swirled her tongue around the tip. She was also playing with his balls with her hand.

"Fuck, it looks so good going into your mouth."

Just then the porch light of the darkened house they were in front of came on and a guy came through the front door on the way to his car.

"Damn, he'll see you!"

He pulled El to her feet just in time. His cock would just have to wait.

El did the rest, her powers being put into practice once again as Mike's cock was tugged back inside his briefs and his pants were pulled up within seconds. Sure, it seemed odd that two teenagers were standing right outside someone's trashcan, but it was better than two teenagers with their genitals out in the open air doing that.

They stayed hidden until the man left and once he did, El sighed and turned to look Mike in the eye. He seemed just as relieved as she was.

"I don't want to go home until we do it. I don't care where or when. But I'm not coming back home with you if we don't do it."

Her voice was stern, her eyes boring holes into Mike's onyx ones and it was clear to him that she was not willing to budge at all until they agreed on the issue.

"Well, um, the school has been turned into a haunted house for tonight. A funhouse. There are supposed to be strobes and a hall of mirrors and a crypt and other stuff. Maybe we could find a place in there?"

"Let's go." El was almost sprinting, Mike's hand holding hers as he struggled to keep up. Her shorter legs were making larger steps than his as they headed toward the school building.

Mike and El made it to the school on foot from Maple Street in record time. As they entered they were hit with the smell of popcorn. They floated past the booth with candy apples, through the maze that was the cafeteria, only getting lost twice, and then down the corridor to the classrooms. They went into one that seemed to be decorated like a crypt but there were too many people in there.

"Act cool. There are Dustin, Will, and Lucas." Mike gestured with his head. He noticed that Will had a video camera on his shoulder and seemed to be documenting everything. Max walked in just as Mike was tugging El along with him.

"Let's find another room." He pulled her across the hall.

Mr. Clarke had moved from the middle school to the high school the year before and his classroom was now the laboratory of a mad scientist. In the corner was a table with a Frankenstein's monster type character on it and beside that was a screen with medical charts. Mike thought it would be perfect. The screen was large enough to conceal them.

He pulled El with him behind the screen and kissed her, his hands already roaming.

"Want me to fuck you in Mr. Clarke's classroom?"

"You can fuck me in front of Mr. Clarke. I don't care."

Her fingers worked on his zipper in record time, her delicate hands freeing his cock from the confinement of his pants and underwear. The head was covered in pre-cum and what she hoped was spit from earlier, but it didn't matter anyway. She was going to get him wet again, her knees already dropping to the floor as she nuzzled her face against Mike's erection.

"You smell like you're ready," she joked, the musky scent invading her nostrils. She never minded it. In fact, it turned her on. This was the smell and taste that usually signaled to her how turned on Mike was.

She looked up at him as her mouth wrapped around his shaft, her velvety lips tightly encasing the head and making their way forward until she took half the length in. It throbbed and twitched inside her mouth and over her tongue as she swirled it around his dick.

"Will you fuck me hard, Mike? I don't wanna think about when we'll be able to do this again. I want you to fuck me so hard it'll be enough for a week," she whispered after releasing his member, only to put it back inside her mouth and work her head back and forth on his length. She never broke eye contact while sucking his hard cock, her hands cupping his balls and she played with them just the way he loved.

"God yes, I'll fuck you hard. You like it hard?" Mike let her keep sucking him for another minute.

He had a sudden burst of adrenaline and desire and pulled El up, making her stand quickly. He captured her lips in a hot kiss at the same time his hands clenched her buttocks. He lifted her up and her legs wrapped around him. He dropped her and her pussy sank down on his cock.

"Oh fuck, I missed this," Mike breathed. There were screams and laboratory sounds coming from some speaker somewhere but he still thought it best to try to be quiet. He kept kissing her roughly.

"I've wanted this every minute of every day for the last month almost. I can't stop thinking about how it feels to push my dick into your, fuck, tight cunt." Mike turned, using the wall behind them to help support her. She was trying so hard not to moan loudly and make noise that she had to bite his shoulder.

A glance at her lover was all it took for El to realize how smudged his zombie makeup was. She guessed it was all over her thighs by now from what they'd done earlier and she probably looked the same, but it didn't matter anyway as long as nobody recognized them. And right now they seemed like the only people inside Mr. Clarke's classroom.

"Will you fuck me again when we get home? I want you...to fuck your come in and out of me when we get, oh, right there, back home. I'll...I'll sneak inside your room if I...can," she whispered over his lips, her arms encircled around his neck as he pumped his cock inside her dripping pussy.

The angle was exquisite, allowing Mike to ram into her at full force as her legs just spread wide open and clung to his middle desperately. She could hear the sloppy sounds their fucking session was making and she moaned, her head resting on his shoulder as she mumbled.

"Do you...hear that, Mike? It's because of your big...cock, oh, don't...stop!"

"I'll fuck you any time, oh god, you want me too. My mom can't keep us apart forever. I'll still be fucking you when we're 60."

Mike had his rhythm. She was pushed against the wall, her hair rubbing against the bulletin board and shifting the Halloween decorations there. He loved having her like this, where he could see her and kiss her and watch his cock invading her, but he also knew what she liked so after a few more minutes of fucking her against the wall he lowered her back to her feet and turned her around, toward the screen they were behind.

"Now I can really fuck you hard. Try to be quiet," Mike said as he shoved his dick into her from behind. He heard her gasp and knew she was feeling his entire length.

"Shh, yeah, like that. Just take it." He whispered as he pounded himself into her pussy.

"Oh, Mike-" El cried out, her hands wrapping around his wrists as he was gripping her waist tightly. It almost hurt, his fingertips digging so hard into her skin it was going to leave bruises, but she loved every second of it.

"Harder," she begged, although it seemed impossible for Mike to do so. Her head rested against the wall as he fucked her from behind, her legs widely parted for him to have better access. She took it a step further, though, her hands moving from his to her ass cheeks and she spread them apart so he could enter her until he was balls deep.

"You can…break me. I don't care."

Mike was doing his best. Every time he pushed his cock into her he wanted to scream her name but he knew he couldn't. He couldn't give away their position. They both needed it too much to get interrupted.

"I'll fuck you as hard as I can but I'll never break you. You're the most important thing to me ever. I never want you to be broken," he breathed into her ear, getting close to her, still fucking her, but hugging her as he did. He liked having her like this, pressed against him, reacting to his touches, able to smell her shampoo and her general essence. He never wanted to part.

El didn't know if she should cry or moan at Mike's words. She managed to avoid doing both in fear of being heard, but she swiftly turned around in his arms instead and lifted her right leg up, wrapping it around his ass.

"I love you so much," she whimpered over his mouth as he entered her again, her hips forcing against his as he pushed in and out of her tight hole.

Her arms were around his neck as her fingers grabbed the end of his hair, gripping it tightly for extra balance. It didn't even matter that she had to stand on the tip of her toes for Mike to reach her pussy, as long as they found a way for him to be inside her while they kissed.

"I don't want you...to ever be broken...either." Her words were a whisper over his lips before her tongue darted out and lapped at his to the point they were eating each other's faces out while Mike continued to ram into her.

"I'm fucking you in Mr. Clarke's room. I won't be able to take notes in here without thinking of your pussy wrapped around my cock. Fuck, El, you feel so good. I wish you could sleep in my bed every night. Or I'll sneak into the basement. I can't go weeks and weeks without this."

Mike held her, his arms around her waist as she did the majority of the work, her leg hoisted around him and standing up as high as possible for him to reach her. His face was buried in her neck, breathing her in and sucking on her soft skin.

Her head fell back as she relished in the feeling of Mike's lips pressing over her neck and sucking bruises into it. It was the perfect season for wearing clothes that would cover the evidence so she didn't bother worrying about the aftermath. Not that she could when he was pounding into her so hard and making her inner walls squeeze around his dick.

Despite how much she enjoyed the position they were in and how she could take Mike's kisses, she was aware that she couldn't achieve an orgasm while putting so much effort into simply allowing him to penetrate her. So she threw a glance at the room they were in until she found the perfect spot - Mr. Clarke's desk along with his chair were mere feet away from them. The desk itself was situated beside a large fake control panel with switches and lights and buttons, so El pushed the chair behind the panel with her mind, out of sight from the general classroom. After kissing Mike one last time, she dragged him to the chair.

Mike took the hint and sat down on it, his cock still pointed upward, red and glistening with her juices as El took a hold of it and positioned it at her entry after straddling his thighs.

"I'm going to sink down on your dick in one go. Look at me when I do it. I want to see your face when you enter me," she commanded, her grip on his cock getting loose the moment the head of his penis touched her folds.

Mike watched her take control, swallowing his cock into her pussy in one motion. He rubbed her ass with his hands, not needing to push or pull her because she was fucking him so enthusiastically.

"Oh, fucking you in Mr. Clarke's chair. Oh fuck, no you're fucking me and you're doing it so good."

She was furiously rocking into him, his cock spreading her open as she dipped and sank down on him. Mike could hear the sounds of his hard rod moving in and out against her bare pussy, their skin slapping and rubbing together.

"Someone could walk in and if they looked all around this place they'd see you fucking me. They'd see your skirt bouncing up every time your cunt takes my cock, your ass perfect and your muscles clenched. They'd want to stay and watch, want to, oh fuck, El, touch themselves while they watch you use my hard cock."

"What do you think...they'd say...if they knew it was us?" El carried on with Mike's narrative; her pussy now moving in circles with his cock burrowed deep inside. She clung to his neck, her lips pressing on his ear before she sucked on his lobe.

"Are brother and sister supposed to do this? Tell me, Mike. Is it okay to fuck your sister? Because you're doing it right now. Does her pussy feel good?" She teased, knowing very well that the labels Karen had forced upon them and had been quickly adopted by everyone who knew them meant nothing. She didn't care what anyone else thought. She and Mike were meant for each other and not in the innocent, sibling kind of way.

When she said that Mike almost came. He would never even consider something like this with Nancy or Holly, didn't even want to be thinking anything about them at the moment, but thinking of El as his sister while he fucked her was a turn on he hadn't quite imagined.

"Not supposed to, oh shit, fuck my sister. It's not, oh god, right. But she's so sexy when she's taking my cock. I only want to give it to her. You're the best sister. You, oh fuck, you're gonna make your brother come. You want him to? Fuck, fuck, like that. When you take me all the way in it feels so good."

Mike was now sure that he'd be fucking his "sister" every day, even if it meant they had to be in the broom closet.

Under any other circumstances, El would have found it weird to talk about her or Mike using the third person, but she was currently burning from the inside out and the idea of them doing something so forbidden only made her cunt pulse harder around his cock.

"Ah, I want you to. Give me...your come, Mike. Give your sister-" El grinned, "-your come. She'll keep it, oh god, until you get home and...then she'll let you fuck her again, her pussy still full of come. Are you gonna let her do that? Ride you…while your mother is sleeping next door? Will you pound her from behind the way she loves it? What brother would do something like that? You're a bad, bad brother, Mike..."

She bounced harder and faster on his cock with every word that came out of her mouth, her hands gripping his hair so tight it left his neck exposed and ready to be abused.

"But I'll try to be a good brother and play with my new sister more. I'll show her the games I like. I'll be nice to her and give her massages after we, fuuuck, play. I'll share the toys I know she likes best." Mike was already picturing fucking her again later in the basement and thinking about what it would be like to stick his hard dick in her come soaked pussy.

"If we don't get along though I'll have to rep-reprimand her and teach her how things are done. I'll have to make sure she knows she should listen to her brother and do what he says because he only wants the b-best for her."

Mike could feel himself getting closer, thinking of her as his sister was going to push him off the cliff.

"She can sleep in my room if she gets scared and I'll make her feel safe. I know she likes her brother's big cock. Mom won't know how much my new sister's cunt likes my dick or how much I like to be inside her. Mom won't know how hard my sister makes me come or what she sounds like when she's needing to be fucked hard."

El could only moan and fuck Mike harder as he carried on talking, her ass slapping on his balls and thighs with every thrust she made. Meanwhile he held still, letting his so-called sister fuck herself on his hard shaft and using him as if he was nothing but a fucktoy.

"Remember that, Mike. Ne-never...forget...how hard...only your sister...makes you come," she croaked out against his throat, sucking and biting on his Adam's apple as she felt her orgasm approaching.

"Will you be...a good brother...and let your sister come first? She's close, Mike. So, shit, oh god, clo-oh-se." She almost screamed, her head burying in the crook of his neck as she rode his cock so rough the chair started creaking along with her movements.

El's vision went blank not even a minute after, her legs trying to close but failing as Mike's thighs opposed. She could only sob throughout her powerful orgasm, her inner walls clamping around Mike's cock in an attempt to milk him dry.

This new thing of theirs was going to have Mike in a constant state of arousal but he was fine with that.

"Yeah, good girl. Come all over your brother's cock like that. He's gonna come too. Come inside his new sister's pussy. Mom wants him to take care of her. I'll always make sure she, oh fuck, co-comes." Mike felt himself coming, felt the first spurt of hot semen shoot out of him and into El. He held on, cramming his dick deeper as it throbbed and twitched, come exploding from the head.

"I'm coming in you. Sister so full of, oh shit, brother's come. Oh god, you take it all so well." Mike lifted his head from her shoulder, having slumped into her as his orgasm rocked through him. Her zombie makeup was smeared, he was sure his was too, and she was sweaty, but kind of glowing because she had just come so hard.

"Do you even have any idea how hot you are?" She was getting up, rearranging her disheveled clothing. Mike did the same.

El laughed, her eyes averting to Mike the moment she decided she looked presentable enough to go outside again. He looked spent, but beautiful nonetheless, and she just wanted to kiss and hug him until they ran out of breath. She didn't, though; instead only intertwining their fingers and whispering close to his lips.

"Will you be a good brother and give me my panties back? If you still want to see your come when we get home." She gave him a light peck as she tried to be more convincing.

Since everyone was going to meet in Mike's basement at 9:00 to compare their candy haul, when Mike and El got home they decided to quickly change out of their zombie costumes and to wash their faces. El was adamant about not taking a shower because she was dead set on fulfilling her desire of fucking Mike again with his previous load of come still inside her.

Fearing someone might have seen the two zombies around, Mike suggested that they say they went as ghosts, a last minute decision since her real costume was ruined.

"Mike, friends don't lie," El chastised.

"Yeah, I know they don't. But couples sometimes have secrets and that's what this really is." He wasn't wrong.

They were sitting in the basement dumping their candy into separate piles on the floor when they heard the voices of their friends upstairs. It sounded like they were discussing the school's haunted funhouse.

"I can't wait to see it, holy shit!" Dustin exclaimed as they walked down the basement stairs one by one. Will was in front of everyone, already rolling his eyes at his curly-haired friend. Behind them were Max and Lucas, bickering about something El and Mike couldn't decipher.

"See what?" El quirked up her brows, making room for their other friends to sit on the couch or on the floor.

"See two guys fucking in Mr. Clarke's room," Max sighed.

"I don't think we should watch it," Will intervened as he glanced at Mike before turning his eyes to Eleven." El...do you, um, know what that- I mean...are you okay with it?"

Lucas scoffed while Mike side-eyed El nervously.

"Yes. Nancy told me about sex," she lied expertly, careful not to divulge anything about her and Mike's recreational activities. And judging from their friends' behavior, they seemed to have no idea that the couple Will taped might actually be them.

"Okay, then. Let's see it, Will," Max stated as she sat next to El. Lucas was at his girlfriend's feet and rummaging through her bag of candies. He seemed to be counting the pieces and El figured he was competing against Max to see who got the biggest amount.

"Mike. Wanna put the tape in?" Will looked at his friend, his eyes silently begging him to say no.

Mike could tell that Will was reluctant to watch what he'd videoed but he kind of did want to see.

"So it's two guys fucking?" Mike asked, noting what Max had said.

The redhead cackled. "No, doofus, that's just a figure of speech. It's a guy and a girl. Jeez, you nerds take everything so seriously."

Will spoke up. "It's near the end. I was trying to document the night. The school looked so great. We were lost in the maze for twenty minutes. There's other stuff on there too. I wasn't trying to shoot a porno."

Mike casually glanced at El who quirked her eyebrow at him.

"Uh, well, I guess if that part is awful we can always turn it off. Could you tell who it was?"

"Only Will and I saw because Max had to escort Dustin from the room so he wouldn't give us away," Lucas explained. "I don't know who it was."

Mike felt more at ease if even Lucas couldn't tell who he was watching.

"Okay. Give me the tape, Will."

After Mike inserted the tape in the VCR, everyone went dead silent. Even if the sex scene wasn't on yet, Mike and El could tell they were all quiet in anticipation for what was yet to come.

Lucas was the first one to break the silence.

"So besides the fact that we didn't even get to say hi to you two, what happened to Beetlejuice and Lydia?" He glanced at Mike and El who could hear Dustin's voice on the tape. The video showed the group of friends on the street.

"My dress ripped and I didn't want to go out anymore," El lied, looking straight ahead as she put Mike's earlier advice into practice. "But Mike came up with a plan and we dressed as ghosts instead. Didn't go to that many houses, though, because it was already late. Right, Mike?"

"Yeah. You guys probably definitely got more candy than we did. I can't believe we didn't see you at the school. But we definitely didn't see any couples having sex." He wasn't lying about that. Being part of the couple in question and seeing the couple in action were two different things.

"The school looked great though. I hope they have a funhouse again next year." He winked at El, which went unnoticed by the others.

"Max bought me a candy apple since they wouldn't let me watch," Dustin was saying. "I guess I'm loud? I don't know, man. But it was a good candy apple. It was sticky, but tasty."

El casually and innocently reported, "I like sticky and tasty things." Mike almost lost his shit.

"Here it goes. Everyone, quiet," Will announced to his friends seconds before the sex part came on.

Dustin was already losing his mind, hollering and cackling on the floor, while everyone else seemed dumbfounded. Max smacked his head until he stopped and watched the scene intently.

El's eyes were glued to the screen and as much as she wanted to study Mike's reaction, she wanted to see what they looked like from someone else's perspective. She could clearly see her skirt bouncing on Mike's denim clad thighs as she rode him, his pale fingers squeezing her ass. To her, those were obviously his hands, but she couldn't admit that to her friends. She couldn't make out what they were saying at that moment, their moans almost inaudible, and it didn't take long until the video showed them reaching their orgasms, El's head buried in the crook of Mike's neck as she thrashed in his arms. Her pussy throbbed at the memory.

"Holy fuck. Whoever that was, she knew what she was doing. Dude, can you fucking imagine being that guy? Goddamn!" Dustin yelled enthusiastically the moment the tape was ejected from the VCR.

"Well, that was hot," Max chimed in, definitely affected by what she'd just seen and it was certain that nobody could argue with her statement.

"I still wonder who they were, though. But it was too dark and we couldn't really see shit." Lucas seemed bummed about the prospect of never figuring out who the couple was.

"He definitely looked familiar. I can't say anything about her because she had her back turned to us. But," Will contemplated, "he could have been someone I've talked to before. Maybe someone from my Art class? I don't know," he shrugged, not giving the issue too much thought.

Mike was having to think about baseball, about dead animals on the side of the road, anything to keep his hard on at bay. Seeing her ride him, even though the sound was low, was melting his mind. He really didn't know how they weren't recognized by their friends, but maybe it was just that he knew every inch of Eleven so well he'd know her anywhere.

"What did you think, El?" Max asked.

El was thoughtful.

"I think it looked like they were in love." She shrugged her shoulders.

Mike braced for the onslaught of mockery he figured she'd get for her statement. But to his surprise, there was none.

"You know what, El? I think it looks like that too." Max smiled.

After comparing and trading candy, with Dustin somehow getting all of the Three Musketeers bars, El having given him her five in exchange for Skittles and Starburst, and Mike just giving away his three, everyone headed out to go home for the night.

"Happy Halloween, Wheelers," Lucas teased as he left through the basement door to walk to his house. "I guess we'll never know who the funhouse freaks were."

El had been squirming for the last dozens of minutes. She refused to take a shower only so she could feel Mike's come desperately trying to leak out of her panties. It was too much already, her clit was throbbing and aching to be touched and she just wanted Mike to kiss it better instead of dealing with it herself. She had promised to visit him, anyway.

But she was scared.

His parents were still awake the last time she checked and she didn't know if it was too early to go again and see for herself if they had finally gone to bed.

But it's almost midnight, she thought to herself and pouted before finally mustering up the courage to climb the basement stairs.

The living room was empty, much to her relief.

Smiling, she made her way to Mike's bedroom as silently as possible, tip-toeing and holding her breath the entire time. She was catlike, or even more silent if possible.

When she tried the knob to Mike's bedroom, it was locked. She frowned and tried not to panic before using her powers to silently release the mechanism and allow her entry to his bedroom.

And there he was, pumping his cock in a tight fist, his pajama pants dropped to his knees as he gripped the sheets with his free hand.

Her mouth watered upon the sight, her mind slowly closing and locking the door again.

He didn't seem to notice, his eyes squeezed shut as he beat his dick. The sloppy sounds coming from the motion his fingers were making let El know he had used spit for better friction and she bit her lip as she stood near the edge of his bed.

Mike had been so looking forward to fucking El again that night that he'd gotten himself all worked up. It hadn't helped that Will had managed to document the end of El riding Mike's dick in Mr. Clarke's chair. No one knew it was them but watching himself get fucked on television almost made him come again.

So he thought he'd come in his room real quick before making his way down to the basement to be with El. He wanted to last longer.

Sensing a presence in his bedroom, Mike opened his eyes.

El was standing quietly beside the window watching him. The moonlight produced enough light to illuminate her face. Her silk nightgown hung to her mid thighs.

Mike stopped what he was doing.

"I, um, I was just about to come down to you," he whispered. "I wanted to make it last longer. But you're here so do you want to help me? I'll be quick and then can be slow."

Mike tugged her into his bed.

"Okay," El beamed and positioned herself between his legs, her hand already taking a hold of his slick cock.

"But you have to come inside me again. And then we'll do it again," she whispered before her mouth formed a seal around the swollen tip. She sucked him eagerly, her head bobbing fast and her cheeks hollowing until the insides of her face rubbed along his shaft.

She continued for over a minute and when she heard the familiar muffled gasps and slight twitches of his body, she lay down on the opposite end of the bed, her nightgown lifted up and her panties already tossed to the floor.

"Shoot it here," she whispered as her knees bent and parted for Mike to get in between them. Her inner walls stayed clamped until then, careful not to let the evidence of Mike's previous orgasm leak out of her hole while she waited for another one.

"Fuck. Wherever you want it. You are so hot," Mike panted as he positioned himself over her. He had only momentarily forgotten that his previous load of come was still inside her and as he watched his cock disappear into her he saw come start to ooze and drip from her pussy, coating her ass in the thick liquid.

"Oh god, I wish you could see it. My cock is making my come gush out of you. You've had my come in your cunt for all this time. While we watched Will's video...while you watched yourself fuck me hard in Mr. Clarke's chair."

It wasn't going to take him long. His mental picture combined with what he could actually see was too stimulating.

"Gonna come. Gonna come in you again." He thrust harder. The sloppy squishing sounds got louder.

"Do it," El urged him, her calves clinging to his thighs as he pistoned in and out of her.

It only took a few more seconds until he came inside her for the second time that day and she smiled contently, watching him the whole time he spazzed and moaned on top of her.

She felt full, his come already starting to drip out of her opening when he pulled out. Her arms found his middle and she pulled Mike on top of her, not minding about being squished.

"I love you," she whispered happily over his neck, knowing very well they might have to wait a while until he could get hard again. She didn't mind the waiting though; instead making the most out of it and peppering kisses all over the skin she could reach.

"And you're still my brother," she joked, her laughter vibrating over the ticklish part of his neck. It made him chuckle and squirm and she couldn't help but laugh even harder until she realized they'd better stop before someone woke up.

"My brother who fucked me in his teacher's classroom and got videotaped by his best friend who had no idea what was going on," she continued in a softer voice, her fingers traveling down his bare back until they reached his bottom. She gave it a light squeeze and whispered over Mike's lips.

"You're gonna fuck me again, Mike? Tell me what you're gonna do to me, please."

"Oh, you wanna know what I'm going to do to you?" Mike brushed his lips over hers.

"Well first, I'm gonna need more friction. You have so much come dripping out and you're so wet and even though your pussy is really tight, I want to be able to feel everything."

Mike gently pushed her back down on the bed so that her legs were still hanging off the side. From where he sat beside her he pushed her legs further apart. He ran his fingers over her messy bare pussy to demonstrate.

"So I'm gonna wipe some of this away." On his bedside table was the silk handkerchief that went with the new suit his mother had bought due to his ever increasing height. He didn't like it because it was pink so he had removed it from the pocket and just tossed it on the table a week ago. He grabbed the soft square of fabric.

"Tell me if this feels nice." He started to wipe the come away, making sure to run the linen over her clit lightly. He did it a lot, touching her inner thighs with his fingers, or barely touching them, then doing the same to her pussy lips.

"Do you like that? A brother should help his sister be clean."

"Mhm." El nodded and took in a deep breath. She tried to glance at what he was doing, but soon decided against it. The experience was tenfold more intense when she kept her eyes closed.

"You're the best brother," she mumbled under her breath.

Mike could tell she was liking it a lot by the way she was breathing and squirming under his hand. He got off the bed, on his knees between her legs.

"Gotta make sure I get the inside too. I'm gonna use my tongue. Is it okay if I suck my come out of you? It is mine. I shared with my sister." He continued to tease her, licking her lips, avoiding her clit, making her buck her hips into his face. He smiled. He ran his tongue along her inner folds, tasting his own come, and then started to suck. He could hear her gasping and trying to be quiet.

He thought he did a pretty good job of cleaning her. He stood back up, his cock was already hard again.

"I want to tease you until you can't stand it. That's what all brothers do, right? Tease their sisters? Except I want to get you close and then stop, and then do it again until you're begging your brother to let you come." He started rubbing the tip of his dick over her, never putting it in, smushing it against her and watching as her clit started to swell slightly. "I'll take you to the edge but I won't let you fall over. Until you beg me." His cock was throbbing as he ghosted it over her, using his hands as well, touching, caressing really, her inner thighs and her abdomen, just barely, knowing the sensations would be more intense.

"Does that sound like a game you want to play with your brother?"

"No," El whimpered and used her hands to hold her legs in the air and as widely parted as possible. It made Mike see her hole twitching even through the dimly lit room. It fluttered open repeatedly, as if begging him to just put his cock in and occupy the empty space aching to be filled.

"Brothers don't tease their sisters."

El was aware that Mike knew her well enough at this point to read between the lines. Despite protesting, the subtle smile plastered on her face indicated that she wanted to play this game with him more than anything else.

"You're a bad brother, Mike. Can't you see that my pussy wants you?" Her voice was a mere whisper and barely audible to Mike, let alone his parents who were probably sound asleep by now. She decided it was safe to keep talking without worrying about them being heard.

"Look at it, Mike," she cooed, her hands dropping to her front as she spread her pussy lips and showed her gaping hole to Mike. The swollen tip was millimeters away from entering it. "Just put it in."

"That's what you want but that's not how you get it. You have to follow the rules of the game. You can't cheat." Mike was having fun with this, though seeing how her holes were contracting and releasing as she held her legs up, her body silently begging for his cock, was more tempting than he'd realized.

"My cock does need some relief but I'm not giving in until you beg me. With words. Turn over."

He rolled her over onto her stomach, pushing her knees up onto the bed, almost at the edge so that her ass was hanging over. He spent a minute stroking his hands over her cheeks, tickling a little, until she was pushing back to try to feel him as he'd pull his hand away.

"Not so fast. You know what to do if you want this." He slipped his raging hard dick between her folds as he spoke, just sliding back and forth to alleviate some of his discomfort. He reached under her and toyed with her clit, bending down as he did.

"Just beg your brother to fill your pussy. My cock is right there. If your pussy could talk I bet she would beg me." He could tell by the sounds she was making that he should stop playing with her clit. She was too close.

"Mike-" El whimpered out of control, her fingers clenched into tight fists around his bed sheets as her walls tried to swallow his dick in.

It seemed impossible, though, his hands deliberately keeping her in place, one of them toying with her clit so much that she couldn't help but moan or grit her teeth. It felt unbearable, the pleasure too overwhelming for her to keep quiet and still.

"Just put it in, please. Fuck me. You want it, too. Just put your hard dick in and fuck my pussy. A good brother would do that, don't you think?" She tried to use every tactic at hand to coax Mike into finally filling her up.

"A good brother would make his sister follow the rules, and the rule is you have to beg me." He was touching her opening with the head of his cock, making her think he was going to finally push it in, and then taking it away.

"Though you did say please. I guess that kind of counts but I was sort of hoping you'd be more desperate. Is that the best you can do?" He let her have just the tip, keeping her from pushing back onto him by holding her hips tightly.

"Just beg a little and you can have all of this."

"No, please."

She was desperate, her hips trying their best to push back against Mike's strong hold on her body but it was in vain.

"Okay. Please fuck me, Mike. Please. I'll do anything if you do. I-I'll let you use me however you want. Remember what you said about our Three Musketeers game? Whoever loses becomes the slave? I lost. Dustin got my five candy bars. I had more of them than you. I'll be your slave. Just...please, put it in. Fuck me." She was sobbing at this point, her pussy dripping down onto his bed, a mixture of his come and her own juices running down her thighs and onto the sheets as she implored Mike to give in and fuck her.

Mike didn't hesitate. She had followed the rules. He shoved his cock into her. El's face was down on the bed as she tried to muffle her groans.

"Good girl, you get your reward. You can come whenever you want." Mike looked down to watch his cock. She was so turned on that he wasn't even having to move. She was fucking him, rocking back and forth on her hands and knees.

"Fuck, that's so hot. I can't make you do all the work though. We should share our chores." Mike pulled out and grabbed his pillow. He rolled her, set the pillow in place, and then rolled her back onto it so that her ass was now raised slightly. He slowly slipped his dick back into her cunt.

"Is that deeper? It feels deeper. But it'll be better when I'm closer." Mike lay on top of her. He could listen to every tiny gasp, moan, and cry she made as he pounded into her. He knew that he'd already gotten her so close to coming that just the friction of his pillow rubbing against her clit as his cock plowed her into it would be more than enough to do the job.

"I love it when you hug...and fuck me," El cried out, her back arched as she pushed her ass against Mike's pelvis. His skin was slapping against hers, squishing her whole body and making it hard to breathe but she wanted it that way. It felt more intimate, being able to feel his heart beating over her back only turned her on even more.

"Sharing...ah...chores?" She grinned as she repeated his words, her pussy trying to take the hard plowing.

"You really are the best...brother. Fucking me...and, oh right there, taking care...of me. I couldn't have asked...for a better one."

Her legs tried to close as her orgasm approached, but her body was completely trapped under Mike's weight. She could only squeeze her ass cheeks, her muscles clenching throughout her body while Mike continued to ram his cock in and out of her.

"You're gonna...make me...come, Mike? Again?" She moaned and whimpered as his hard thrusts made her clit rub over the cushioned fabric beneath her.

"Of course I'm gonna, oh fuck, make you come. I said I always would. I'll always take care of my, uhn, favorite, fuck, sister. Mom wants me to be a good, shit you're so tight, brother to you."

Mike felt like he was getting deeper still with every thrust even though he knew he was buried all the way inside her. She was squeezing him, her slick walls clutching his shaft, pulling him in.

"Come for me, El. But be quiet so Mom doesn't hear."

Keeping up the siblings act was enough for El to be driven over the edge, her inner walls clamping hard on Mike's rod seconds after. It felt even more intense than the previous time that day and she quickly grabbed one of Mike's hands and brought it to her mouth. Her teeth dug into the soft skin as she climaxed, her moans being fully absorbed by the back of his hand.

She didn't know if he minded it or not, but her powerful orgasm had left her incapable of thinking straight. All she could do was spasm and drool over his fingers until the quaking finally subsided.

"I'm...sorry," she whispered and lapped at the freshly wounded skin, her tongue stroking the marks apologetically while he continued to fuck her hard.

"Oh fuck, I'm gonna, shit, 'bout to come, tell Mom you bit me." In reality her biting his hand had only made his cock get harder as she did it while her pussy was gripping and convulsing and pulsing around him.

"But keep licking my hand. I'm gonna come in my hot sister's pussy. Lick it. Oh, fuck, El!" He wanted to cry out but he gasped his words, trying to be quiet, his face was right beside her ear and he needed only to barely breathe his declamation. She had moved to sucking his fingers and he burrowed in one last time, his ears ringing and his vision going white for a few seconds as he filled her for a third time that day with his hot come.

"Fuuuck," he breathed. "Happy Halloween, sis."

He kissed her cheek, having slumped onto her while he was coming. He didn't want to pull out, wanting to keep his cock safely embedded in her, but he was afraid she couldn't breathe so he reluctantly rolled off of her.

El frowned the moment their bodies unglued and she sought the warmth back, like a lost puppy would.

"Let me hold you," she whispered affectionately as she straddled Mike's middle and lowered her torso on top of his, her arms cradling his head as she pulled him in for a kiss. It was sweet and innocent, despite their tongues swirling around each other until they ran out of breath.

"I love you, Mike. And you're not my brother, okay? It's sexy to think about it when we do it, but I don't want you to ever be my brother. We're going to have babies one day and brothers don't do that with their sisters, right? That's what you've told me."

Her eyes were begging him for confirmation, her delicate fingers tracing his jawline as she waited for an answer. Thinking of something as taboo as them being siblings when they fucked was amazing, but that was where El wanted to draw the line.

The concern on her face made Mike smile.

"Of course I'm not. We were just playing. And I'd never think about doing that with my real sisters. Ew, gross." He laughed but then was more serious. "I love you too. So much. We're going to grow up and grow old together and Mom can live in her fantasy world while we live our real lives together. I want that with you."

He kissed her again, gently pulling her face into his so their lips could meet.

"But that was so hot, pretending. I liked it. Um, I'd like to do again. Like a lot. It'll be our secret and make this house a lot more fun."

"Okay then." El grinned and wrapped her hands around his neck until his face was buried in her chest. She kept him there, nuzzling her cheek against his hair for a while and taking in his shampoo scent, the one they shared.

"I can keep this secret." Her tone was reassuring and accompanied by her fingers massaging Mike's scalp. She knew it made him sleepy and all she wanted was to tuck him under the covers and join him so they could fall into a deep slumber together.

But they couldn't.

Sighing, she loosened the hold she had on his body until they faced each other and it didn't take long until her eyes started to get wet.

"I should go…"

"Wait." Mike stopped her as she climbed out of his bed. "It is Halloween. I'll tell Mom we were watching scary movies in the basement and I fell asleep down there. I'll say I was watching movies with my coolest sister. We didn't want Halloween to be over yet. She'll love that."

Mike grabbed his pajama pants, not worrying about underwear. He threw on a t-shirt.

"Come on. Let's go snuggle in the basement."

He took her hand and they went downstairs to where their life together had really started, awaking hours later on All Saints' Day. Their home life with Karen Wheeler could now be a fun game of smoke and mirrors. Halloween was over but they had discovered a way to make every day feel like they were in a funhouse.

Author's Note: This was such a fun ride to go on during my favorite holiday season. Thanks so much for reading and riding along. I love Halloween. This is for my best friend ever. I love you so much. Without you I'm nothing.