Offline/BONUS: Growing up with Grace

Grace loved having a pool, and unknowingly loved living somewhere she could use it all year round. She was always in it, a capable swimmer from the age of 4, and was almost perpetually naked as a result. It just made sense. Getting in the pool meant taking off your clothes so why bother getting dressed if she could jump back in at any minute? Her parents were in agreement about that, which seemed like the only thing they agreed on before her mom walked out and never came back.

Mike unofficially became her brother when he suddenly had a room down the hall. She was only 6 years old and embraced him immediately. He was kind, easy-going, and effortlessly witty, loving to joke around, so he was a perfect sibling-starter-kit for a kid who had been an only child. Mike was equally as excited to have a pool, though some things took some getting used to. Grace wasn't the least bit shy about how she swam and desperately wanted a swim partner. A stranger would do, and the neighbors would invite themselves over on occasion, but she really wanted to share the pool with her new brother.

She was the only one in the family swimming naked which was something her dad defended fiercely, extra permissive and protective of his little girl. But as two small families quickly acclimatized to each other's ways, that option provided a spectacular convenience that Mike adopted soon enough, and itself was a gesture which helped assure Grace of its normalcy. She often found she was the only kid without a suit on when daddy's friends came over and had questioned why, but Mike joining her in that practice bolstered her confidence. And he followed her lead even further.

After a few weeks of swimming every single day, never having been spoiled with constant access to a pool before, changing in and out of clothes was a burden. And as weeks turned into months, Mike stayed dressed around the house less and less. Dipping in and out of the pool with Grace all day on the weekends meant they'd constantly run around in the buff, raiding the kitchen for a snack, sitting naked for their meals, and getting used to air-drying so they could stop getting yelled at for using all the towels.

Their parents thought it was cute at first, the two kids becoming so attached to one another, but gradually tried to discourage their behavior. A teenager sitting naked on the couch with a 7 year old to watch TV wasn't the same as the two of them swimming together. Of course Grace defended her brother. She only ever wanted someone to swim with her and the more often he was naked the more likely he was to get wet with her. Being naked in the pool was apparently still excusable but it was still decided Mike would have to get dressed more often, though Grace still had a free pass.

That was the first time Grace could remember someone being shamed for being naked, that it was somehow naughty. That notion caught her interest and stuck with her forever. Being naked had never been naughty before, and it apparently still wasn't for her, yet it was for Mike, at least outside of the pool. She struggled to understand why it wouldn't be naughty for everyone. Was she just allowed to be naughty?

Something else Grace struggled with was boundaries. She'd never had a sibling before (whereas Mike had half-siblings somewhere out in the world) and had glommed onto Mike so quickly that she found it hard to grasp when she couldn't play with her fun, cool, awesome older brother whenever she wanted. Wasn't that what siblings were for? She didn't care what he was doing, or if he had friends over, or whether she was "decent", she just wanted to have fun with her brother. She learned that brothers were supposed to have privacy, but she rarely respected that. And she learned that Mike's new friends liked her to get naked whenever they came over, and they came over often.

Things eventually went from Mike's friends always asking to hang out in the pool with his sister to Mike making Grace strip before his friends even arrived to try to keep them happy. Getting naked for Mike's friends was an odd game that she got some of her own friends to play as well, a couple girls all barging into her brother's room hoping the boys would demand the girls strip down. Strangely that never worked as well, but when it did it was downright salacious to her besties.

When new siblings came along, their parents somehow got more strict. They kept reminding Grace that she needed to "be decent" or "stay decent" when company was over, specifically after she crashed a baby shower in her birthday suit and horrified some of the other parents.

But for Grace, covering herself up came more naturally with time. Once she was 9 and more aware of her body she no longer wanted to strip for Mike's friends all the time. She was still happy to swim naked with them though, at least when she felt like swimming. She felt safest in the pool. The water always accepted her just as she was. But as she got older her casual nudity gradually lessened. In its place morphed and matured a new and titillating intentional kind of naughtiness, one that was harder to understand and much more insidious.

Grace started to tease Mike whenever he didn't swim naked with her. She would make a big show about stripping off all of her clothes poolside, sometimes putting on extra items just so she had more to take off. Sometimes she'd wear a swimsuit under all her clothes to prank him, and sometimes she would take that off too. That naturally brought Mike to counter by teasing her for wearing clothing at all. They teased each other back and forth good naturedly for a year (and teasing around people who weren't in on the joke was extra fun) but the more accustomed Grace grew to staying clothed - and the more her brother teased her for wearing them - the more enamored she became with the idea of getting naked, a once normal thing that was almost inexplicably becoming forbidden.

She still remembers that momentous day when she was 10 and watching a movie with her step-bro. Mike compared her to one of the characters and made a comment about her shorts being so short that she may as well not be wearing any. Instead of their usual back and forth on the topic, Grace said "Fine" and spontaneously stripped right there in the living room only to sit back down on the couch to finish watching the movie. And it felt amazing. Arbitrarily going naked on the couch for no other reason than an offhanded comment was a much different thing to them enjoying the pool together suitless. It was impulsive and wrong and exhilarating and something that neither of them truly knew they wanted until that moment. Grace unexpectedly found that she liked being looked at, that she missed the attention it had always garnered her, while Mike more than enjoyed looking at his sister's shapelier waist and lengthening legs.

After that first time in the living room, stripping Grace turned into a proper game, one that both of them wanted to play. They kept it from their parents as well as their younger siblings despite playing it several times a week. But it wasn't hard to hide. The pool was never far away and one dive was all it took to prove their intentions were pure. But in truth their intentions while inside the house together were becoming indefensible.

Every now and then Grace could goad Mike into swapping roles, getting him to strip for her, but generally she was the one getting teased into stripping. She would put up a bit of a fight to show how innocent she was "if not for her teasing brother," but she always gave in. It was only when Mike was especially clever or witty that she would reward him quickly and strip right away. She wanted to make him work for it most of the time. The only problem with their game was that they couldn't go anywhere after getting naked. Figuratively that is. They could always go out to the pool, but the game technically ended once she was naked. On rare occasions Grace might contort herself on the couch or lay on the kitchen floor or bend over the bed or wherever they had decided to play that day to allow her stepbrother to drink in her body, going until they got caught or one of them lost their nerve. Most of the time she'd redress after only a minute (which somehow made the act naughtier) while on her bolder days she was 6 again, all but outright refusing to cover up and following Mike to pester him through the entire house.

Grace never tired of it, but she liked to keep things interesting too. They tried all sorts of variations at her behest. Most Mike didn't even know about, like timers and scores in her own head that would force her to remove X amount of clothing if he was tenacious enough or funny enough. Sometimes she'd make Mike talk her out of each individual piece of clothing, Grace subtly probing him for wardrobe suggestions at the same time. But despite her variations it was Mike who ended up changing the game most dramatically.

She was 11 when it happened. Mike was in a mood and so was Grace - although their moods didn't match - and she'd managed to get him to talk her down to her panties and training bra, chasing him back to his room in the process. He said he was done and asked her to leave but she was determined to get naked and insisted they weren't finished yet. So he flipped up her bra and tugged down her panties and kicked her out into the hall.

That's all it took. That was the spark.

The next time Mike started teasing her she shot down everything. She played hardball. He dug deep, working his wit to the bone. She stubbornly held back smiles and chuckles and he was dumbfounded why she was being so elusive. Finally he asked her whether she was going to get naked. She stood up with a smile and dared him with "make me". So he did. She still tried to evade him even then, backing away a little for dramatic effect, smiling the whole time, but she was quickly threadbare. And then she sat back down. She had managed to get completely naked and had not removed anything herself.

The mood between them was very different after that. The game had always been played at a distance. They'd never touched each other before. Suddenly that imaginary barrier was gone. Her single dare put them both all in.

That was her new codeword. Make me. That instantly turned their wordplay game into a wrestling game, and sometimes also a "chase me and pin me down because I'm not making this easy today" kind of game. The extra time and effort it now took for Mike to wear her down with words and then peel away all of her clothes made the game much more fun for both of them, and getting so physical with each other only worked to rile them both up, but there was still nowhere else it could go. They were supposed to be brother and sister. This was "just" a naked game, though one they enjoyed more than ever. Grace goaded Mike into switching roles sometimes like before, with her chasing and stripping him a handful of times, but he was far less likely to want to lounge around in the buff with a hard on, something he found himself sporting more and more.

The day the game changed again was like any other. They were on the couch together. Grace had just turned 12. She said make me. He was ready for it. He scooped her up before she could stand and had her shirt off before she knew it. She giggled furiously while twisting around on his lap trying to keep her bra on. But after she made an innocent comment about how he'd be sorry this time, he replied - equally as innocently - with the codeword.

She was beside herself. They'd never both been activated at the same time before. But Grace wasted no time attacking his shorts. He didn't comprehend what she was doing at first since he was having a hard enough time keeping her still. It wasn't until her fingers were dug inside his briefs that he realized what she was up to, but he had only just unclasped her bra when she jerked herself off the couch, tugging his bottoms out from under him and all the way to his shins.

He clued in to what he had said then, recognizing his mistake but rolling with it. She wanted to get naked so he was going to make her. He plucked her loose bra from her arms easily enough while she was on her back, but when he reached down to grab either her legs or her shorts she spun up onto her knees to face him, her hands on his thighs, trying to cut him off from her remaining clothes. That brought Mike to drag his topless 12 year old sister back onto the couch, laying her across his bare lap.

The teasing continued while they grappled, Grace intercepting his hands again and again, neither of them backing down. She flopped around on top of his growing cock, getting poked in the back and the stomach with every twist and jerk, focused solely on their fight. Once her bottoms were below her knees, Grace gave up on them to go on the offensive and scrambled to attack Mike's shirt, quickly straddling his lap once she was naked so she could best tug on his top. With the game still going he clamped onto her nipples and twisted her preteen titties, the boldest thing he'd ever done to her besides swatting her exposed bottom. After she got past the shock of it she gritted her teeth and let him go to town, fixated on her winning her prize.

She pried his shirt up his back and over his head, bucking and twisting wildly, letting loose pained moans while trying to shake away his pinching fingers. But despite his shirt coming off his head and down his arms, it wasn't all the way off yet. It merely hung from his elbows, his hands stuck to her chest. He refused to let go of her nipples and she couldn't pull herself away. She strained and fought, grabbing his wrists, prying at his fingers, and writhing her body until they both realized... Grace was outright grinding herself against Mike's stiff cock.

With a very worked up Grace panting, slowly smiling, her split mound hugging the base of Mike's steely erection, she took things one step further. Peeking past the hanging shirt to spy on the cock she had pinned against Mike's stomach, she intentionally rotated her pelvis to rock her clit against him, to slide his hard shaft between her parted lips. An accident was one thing, but that was one step too far for Mike. He observed her lewd act for no more than a minute before letting go of Grace's nipples to keep the game from escalating beyond a game.

Triumphant, Grace gleefully pulled Mike's shirt off his arms. She rose from her step brother's lap and did an unintentionally sexy dance in the living room, rubbing his shirt against her bare body in an effort to gloat. And with Grace there rubbing herself, Mike rubbed himself too, Grace's excitement having already wetted the base of his dick. Witnessing what her brother was suddenly doing in front of her made Grace want to keep dancing. Their game was over, so this was something new. They teased each other like that for a few minutes until their parents came home. That was the guiltiest pool run they'd ever made, although they did what they could to laugh it off and forget about it.

Grace couldn't forget. Their privates were touching. She'd even rubbed herself against him. Why did she do that? Frankly because it felt good. She'd only recently started masturbating after they played, but to thoughts of people pulling her clothes off and running around naked in public. She was never thinking about penises. But remembering how hard it felt beneath her, how delightfully naughty it was to press her vagina against one, her thoughts also changed that day.

The step siblings continued to play their game as usual, but with new frustrating undertones. Mike would strip her more slowly, deliberately, teasing her all the way through, and she was fighting less, Grace wanting to savor every article he pulled off of her. Once he was done she'd run away horny just as often as she'd snuggle up to him, or show off with a suggestive pose or strut, but it was all getting more confusing and less satisfying than it had once been.

One day at the pool she teased Mike like old times about not swimming naked with her, even though she wasn't either. But Mike changed that. He stripped off his trunks on the deck and cannonballed next to her. Suddenly he was the one naked and carefree and she found herself paying extra close attention. Watching him climb out of the pool. Watching him leap back into the pool. Watching him float past her. And she felt incredibly guilty, not just for watching, but for wanting to watch.

Was this how Mike had felt when she swam naked? Was this how she had made his friends feel? She realized so many things all at once, but didn't realize how hard she was staring. That focused attention was hard on Mike as well, his sister eyeing him up so blatantly that a mild semi rapidly ballooned into a full blown erection, one that he tried to pretend wasn't there but couldn't shrug off even after several dives. His suitless swim only lasted a few minutes, carrying his trunks inside after making a quip to Grace about how something unexpectedly came up.

Grace wasn't certain what she wanted after that. She kept dropping their codeword and he continued to oblige her, but it wasn't enough. Call it deviancy, hormones, or just plain curiosity, but she wanted something else.

A couple months later, after numerous failed attempts, she managed to pester him into it while the two of them were hanging out in Mike's room. He gave a smile, a sigh, and shook his head. Then he stood up and said "make me". This was it. An opportunity she couldn't squander. Grace really took her time. She ran her hands under his shirt to take it off, admiring his manly physique up close. She pulled off his socks then carefully opened his jeans, tauntingly squeezing his ass before removing those too, again with her hands inside them.

Once he was stood in just his briefs, his bulge prominent, she asked him if he liked this. But she asked it while her thumb teased the inside edge of the elastic waistband, her fingers skirting over the front of his briefs, testing the stiffness of his growing bent member. He replied by saying her name. That made her nervous, but he didn't continue, so she continued instead. She pulled his underwear down past his cock letting him spring up into the air. When she stood with the plain briefs in her hands he was already stiff enough for her to hang the article off the end of his rod, a fact that she showcased before knocking it off onto the floor, grinning with childlike wonder, watching his cock bob.

Standing naked before his sister, he couldn't figure out where her head was at. Was this playful or serious? Mike said her name again. So Grace said his. They eyed each other up, intentions becoming clear, Grace attempting to look sultry. Then she calmly laid down on her brother's bed, looked up at him, and said "make me".

For once she didn't fight him at all. She remained extremely still as he plucked every single item off of her body, even her earrings. He had to lean over her for that, one knee on the bed with his healthy stiff cock hovering over her fully exposed young figure. Once she was stripped clean he put both of his knees on the bed, straddling her. He asked if she was sure. She paused, then nodded. And then he entered her.

Neither of them spoke. It was a surreal experience for them, filled with pain and pleasure and grunts and moans, filled with desire and emotion rather than thoughts, but it was over so soon. The step-siblings bust their cherries together, and made quite a mess in the process. She later apologized for bleeding on him. He apologized for cumming inside her. They helped each other clean up and then hardly spoke of it again. They didn't need to. They both knew they shouldn't be so risky. They knew it was a one time thing. But none of that quelled how they felt about each other.

The next time Grace uttered their codeword was purely accidental. It wasn't until she saw the look in Mike's eye that she realized what she said. She ran away shrieking, Mike already on her heels. She only got halfway down the hall before he snagged a piece of her shirt, nearly ripping it off of her, and dragged her back to the kitchen. She fought harder than ever, a beaming smile advertising her competitive spirit, and she loved that he fought back just as hard. The two had become more physical than ever, both in and outside of their game, less concerned about where their hands might land, welcoming the closeness, their strong attraction inviting each other in.

Their parents separated next spring. Grace was distraught. She all but disowned her own father trying to find ways to stay with her step-brother. When Mike surprised her on the day he was meant to leave with his mom by picking Grace up from school she cried in his arms for an hour, sitting balled up on his lap in his car like she was 4 years old, her family about to leave her again. But Mike assured her that they were more than just family, that he'd always be there, and that he could never feel about anyone the way he felt about her.

Crying turned into kissing, intense emotions spilling forth. Mike swung his car into a back alley so they could talk in private. The two of them fucked their brains out, their attempt at a tearful impassioned goodbye, Grace stripping herself bare and madly hugging Mike in his driver's seat while he drove up into her pussy. The distraught 13-year-old girl frantically clawed at her brother's back while being bounced on his cock, clambering to kiss him between her persistent moans and then shuddering in his arms as she came. She begged him not to cum just so that they could keep going, as if that would let them stay connected like this forever, not wanting to say goodbye. But she still welcomed his orgasm when it came, gnashing her mouth against his while his throbbing shaft gushed inside of her just like their first time.

Grace still refused to let go once he'd finished. She started crying into his shoulder, rocking her body against his, softly humping the cock stretching her so wide while she mourned all that she was losing. Mike gave her a minute, then five, but she worked her body more the longer that she cried. She cried for so long that she worked another orgasm out of both of them, doggedly riding through her pain until their pleasure could crash through it, mercilessly fucking her brother's cum coated dick and screaming his name when he was able to fill her again.

Mike gingerly pried Grace off of him after that. They were both a sweaty tearful mess. But no matter what they did, he still had to go.

They stayed in touch but the split was hard. It's easy to grow apart when you can't see each other, and their relationship had always been a particularly physical one. Grace flew out to see him on her own a few years later. She was trying to surprise him during summer break, showing up at his apartment unannounced, only to find out he was dating someone. It had to be expected, but Grace was still crushed. Mike's girlfriend bore a striking resemblance to Grace, the two getting mixed up when Mike introduced her to the rest of his family. But Mike chose to sleep with the lookalike while Grace laid alone on his couch for the length of her stay.

Her dad asked how the trip went. Fine. He asked how Mike was doing. Fine. Everything was just fine. Thankfully, unlike her brother, the pool was still waiting for her when she got home...

The End

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