Work Text:
I wanna be your vacuum cleaner, breathing in your dust
Jisung felt like he was sixteen again, despite having just turned twenty-five. He was alone in his room, listening to Arctic Monkeys and thinking about his sister. The only thing separating him from the past was the fact he wasn't in the past. He still listened to the same music, still liked the same genre of anime and still lived with his sister. Still thought of his sister. A lot. Thankfully, now it was just the two of them, instead of their parents being in the same house.
Jisung and Lix had their own rooms in the apartment, but they spent practically all their free time together, at home. Mostly in their shared living room. Just hanging out or watching anime and movies, playing games on the latest consoles Lix insisted she had to buy, although Jisung knew she couldn't actually afford them. But who was he to deny her the joy of gaming and the community it brought her?
Neither of the twins had that many friends, and especially not in Seoul, where they'd just moved to over the summer after graduating university. Flx was now a pre-school teacher. She'd already found a job in Seoul, that's why they'd moved. Jisung had a master's degree marketing. Music was his real passion, though. Had always been. And as he hadn't found a job in their old town, or anywhere for that matter, making the decision to follow Lix to Seoul had been easy.
It had always been them, together. Jisung and Lix. Lix and Jisung. They were a package deal, buy one - get two. Yin and yang. Born forty minutes from one another. Jisung at 23.54 on September 14th and Lix on 00.34 on the 15th. Jisung liked to think that those forty minutes they weren't together with Jisung being out in the world, Lix still in their mother's womb, were the loneliest forty minutes of their lives. That's why Jisung had cried so loud and long. Apparently, the midwife had commented to their mom, that she'd never seen a baby cry for so long and hard right after birth. Not while being completely healthy at least.
Especially during their teeange years, the twins had received some more or less odd comments about how they were so close, about always wanting to do things together, about not having their own, separate friend groups. But they didn't mind. They'd shared a womb for nine months for crying out loud. They'd learned about the world together. Punched a bunch of cruel classmates together when the lowlives had made fun of and harrassed Lix for being trans. How could the twins not be close? Being together was as natural as breathing.
And maybe, maybe the questions about their closeness had been warranted. But as the twins hadn't questioned it themselves at the time, or at least Jisung hadn't, their closeness had developed into a sort of issue. Not a problem, Jisung would never call anything related to Lix a problem. It was all in his head. He was the problem.
Because for the past decade, Jisung cringed at how many years of it had been, he'd loved Lix, wanted Lix. In a way no brother should love and want. The nasty gremlin inside him cheered every time Flx hugged him, let him brush and, poorly, style her hair. Every time Lix felt up and complimented his gains from the gym. The touches on his growing, aching biceps always made him twitch in his pants. But maybe the worst of all, was when Lix would come to him, crying and with a wounded heart, when her relationship of that time had ended.
Jisung hated seeing her cry. Sad, wet tears streaming down her delicate features as she'd clutch Jisung closer and ask why she couldn't love like she wanted to. Jisung didn't know what to say. But also, deep in the dark abyss of his heart, he was relieved he was again the center of Lix's world. Not some undeserving boyfriend. Although Jisung was aware he definitely would never himself be deserving to be in the radiant, warm light of Lix's love and adoration. Not when his thoughts and love for her were far from pure.
In my mind, when she's not right there beside me, I go crazy cause here isn't where I wanna be / All I ever wanna say is "Are you mine?"
Jisung sighed. Truly, all he ever wanted to ask Lix was if she'd be his, but that was just fantasy. In reality, Jisung would have to settle for familial love. And while that was amazing, the older Jisung got, the more he craved for romantic love. And he only had one person he wanted that romantic love from.
"Fucking Arctic Monkeys," Jisung huffed and rolled around in his bed to face the wall. "Stop writing my thoughts into songs."
"Who do you want to be yours? Does my Jisungie finally have a crush on someone?" Lix's tone was teasing and light.
Jisung sat up so fast he felt faint.
"Lix?", he croaked out while choking on saliva. "But you were supposed to celebrate your birthday with Hyunjin, how are you home already?"
Jisung watched as his sister walked over and sat down on the edge of his bed, before laying down next to his criss-crossed knees.
"Yeah, but Hyunjin got absolutely wasted. We couldn't even get into the club cause she was slurring her words so bad and having trouble standing," Lix sighed. "So, while sitting on the curb I called her boyfriend to come and pick her up. He also dropped me home, so that was nice gesture," Lix poked out her tongue and threw an arm over Jisung's legs.
"Oh yeah, what a thoughtful birthday present," Jisung snorted. "Glad he did the bare minimum, though. I didn't like the idea of you walking home on your own in the middle of the night."
Silence fell over the room as Jisung laid down too and snuggled into Lix's side, burying his face in her recently washed, green apple scented hair. Lix traced infinity symbols on the side of Jisung's head, and Jisung felt like he could purr at the sensation. He felt comfortable and safe being surrounded by the familiar scent of Lix, her shampoo and perfume. She was a creature of habit and used the same products year after year. And Jisung, Jisung had been Pavlov'd
"Sungie, don't fall asleep on me," Lix said playfully and poked Jisung's cheek instead of playing with his hair.
"Why did you stop? That felt so nice!" he whined.
"I can tell," Lix laughed.
It took him a moment to come out of the comfortable haze he was in, but then he realized. He was half hard in his shorts, and he was poking against Lix's thigh. Jisung bolted upright so fast he felt lightheaded for the second time.
"Lix, I-, wait, I-," Jisung couldn't form words from his embarrassment and grabbed a stuffed animal instead to hide his crotch. He tried to climb over Lix's legs and out of the bed, but she grabbed his shirt.
"It's okay," she smiled. "It happens."
"No, I-," Jisung tried to move away but Lix pulled him harder towards the mattress.
"Jisung," Lix said but her brother was still trying to pull away. Desperate times called for desperate measures, she thought.
"Oppa-,"
She snapped her mouth shut, startled by the speed of which Jisung's head spun to face her. He was flushed and wide eyed. Lix grinned.
"Oppa," she continued, "It's okay. Really. You don't have to go. You can't go. It's my birthday, what I say, goes. Right? That's what you always say. Stay."
She could almost see the gears turning in Jisung's mind. She could also see, clearly, the way his cock kicked in his sleep shorts.
"But-," Jisung sat down slowly and took a deep breath, closing his eyes.
"I sometimes get hard for you too," Lix said and shrugged.
At that, Jisung's eyes flew wide open. His mouth went dry. He opened his mouth to say something but no sound came out. Was this actually happening? Had he fallen asleep and was now dreaming?
"Okay, pretty often," Lix admitted. "It happens. I can't help it either. But we're-, we're us. Isn't it only natural?"
Jisung felt like fainting for real this time.
"Can you like, talk to me, cause I'm starting to feel like I made a mistake here," Lix bit her lip.
"I-, yes," Jisung cleared his throat and nodded, making Lix laugh, bright and light. Her laughter was like music to Jisung's ears.
Lix sat on her knees in front of Jisung and leaned in closer, balancing herself with one hand on the bed, one of Jisung's broad shoulder. She leaned closer, slowly, keeping her eyes on Jisung's, who stared back, his plump lower lip jutting out so endearingly. With just a few centimeters between their lips, Lix stilled.
"Is this okay?" she asked quietly.
Jisung nodded frantically and closed his eyes, subconsciously opening his mouth. Lix smiled, all teeth on show, cheeks bunching up, before she leaned in to fully close the distance between their lips. The kiss began soft, light, chaste. There were no fireworks, just the feeling of belonging, of home.
Jisung slowly opened his eyes as Lix pulled back. "You have no idea how long I've dreamed about this exact moment," she said softlyand stroked his hair.
"Why'd you stop, then?" Jisung looked like a kicked puppy, and Lix couldn't help but laugh.
"You try being in that position and kissing for a long time, let's change it."
"Oh. Right," Jisung nodded and remained still. He was overwhelmed and barely processing what happened. What his sister had said. She'd wanted to kiss him. For a long time. And she did kiss him. He needed to lie down. Luckily Lix made that happen as she pushed him onto his back and climbed to lay on top of him. She smiled at the feeling of Jisung's cock poking against her abdomen, and if she weren't tucking at the moment, Jisung would feel how hard she was for him, too. Lix leaned in for another kiss, which this time grew hungry and desperate quickly. Jisung's warm hands settled on her waist and she snaked her fingers into his hair.
"Jesus fuck, fuck, I can't believe this," Jisung gasped as Lix attached herself to his neck. Wet kisses were placed along the column of his neck, the sticky sensation of her lip gloss cooling in the air on his skin. He tasted the artificial watermelon of her lip gloss and something else fruity, probably a drink she'd had over at Hyunjin's.
Lix chuckled and nibbled on his earlobe. "Same here, oppa," she added the last word deviously. She was starting to seriously feel uncomfortable in her little dress and tuck. She wanted to feel her brother's skin on her's, too. Properly. It didn't help that Jisung's hand was slowly inching its way between her's legs and caressing her side near her chest.
"Sungie," she panted.
"Yeah?" Jisung opened his eyes and Lix wanted to laugh at how fucked out he looked, although they'd only done a little kissing.
"I'll go freshen up a bit, and uh, y'know."
In the state Jisung was in, he didn't in fact know, but he nodded anyway and pouted when his sister got off of him.
"You pout way too much for someone who's half fifty," Lix laughed as she walked out of the room. Jisung heard the bathroom door close and water run from the tap.
Jisung's mind was racing he didn't even react to the comment. Kissing his sister? Amazing, unreal. Lix was such a good kisser. He quickly pushed aside the thought that she had practised it with others instead of him. When she'd come back, were they going to make out more? Some petting over clothes? Under clothes? Would they go as far as oral? Would they even have sex? Jisung was ready for anything Lix was ready for. And hoping for all the mentioned things.
Jisung took off his socks and threw them in the corner of his room which he used as a hamper. He was contemplating taking off his t-shirt, but then Lix cleared her throat. Jisung turned around to look at her.
She stood in the doorway, having let down her long blonde hair and wearing just a white silk nightwear of some sort. Her lean legs looked so long. The clothing item probably had a name but Jisung did not care for irrelevant things like that right now. He wanted to praise her, but his brain to mouth connection was not working. He was looking at an angel. His angel.
Lix smiled wide, beaming like a ray of sun.
"You look great, Lixie. Oh, thank you, Sungie," Lix laughed at her little role-play moment and walked over to Jisung who'd had to sit down on his bed.
"Woah," was all he managed to say as Lix straddled his lap and wrapped her bare arms around his neck, fingers coming to toy with the short hairs on the back of his neck.
"You've literally seen me in a bathing suit before," Lix chuckled and kissed the tip of Jisung's nose. "Many times. How are you reacting like this now?"
"Because now I don't have to pretend I'm not affected by it," he answered easily. "And now I know what kissing you feels like."
"You're precious," Lix giggled and leaned down to properly kiss her brother. "Hope you like what kissing me feels like," she added between kisses. "Because I really like kissing you."
"Mmhh," Jisung could only hum, head spinning as Lix grinded on his lap. The friction against his hard cock needed and delicious. He could also feel Lix's little cock poking against his stomach. She was getting hard. Jisung was sure that even if they weren't kissing rather messily right then, he'd still drool everywhere.
"Why are you still wearing this? Ugh," Lix groaned as she pulled Jisung's shirt over his head and dropped it on the floor. "Lay down, I'm going to blow you now."
Jisung couldn't help but let out a high-pitched laugh at the surreality of it all while Lix yanked off his sleep shorts and settled between his legs. He looked down to see his sister get right to business, eyes closed, small hand wrapped around his shaft and lips puckered, ready to kiss his leaking tip.
"You-, you don't have to, like really if-,"
"Shh," Lix shushed and gave a lick to his tip, effectively shutting him up. "I want to."
"Okay, jus-, hahh," Jisung said and exhaled shakily as Lix took all that she could into her mouth in one go and adjusted her warm hand around the bit she couldn't.
Lix swallowed around Jisung while looking into his eyes and began bobbing her head. She pulled back almost completely and then hollowed her cheeks while taking him to the back of her throat. The soft insides of her cheeks caressed Jisung's cock so soft and warm, so wet, he wasn't sure he could hold off his orgasm for long already. Who could blame him? It was Lix going down on him. She was so beautiful with all her freckles visible, lips stretched around his cock and a faint blush on her cheeks. Jisung told her as much and watched as the blush deepened.
She swallowed again and Jisung gripped her hair tightly, hips bucking up into her face so that she gagged around him.
"Sorry," Jisung apologized but it didn't look like Lix heard. She looked so focused, swiping hair away from her face and bobbing her head even faster, her hand moving with the flicks of her wrist. Jisung was not going to last.
"Lixie, Lix!" Jisung had to raise his voice slightly and literally pull his sister off of his cock as she seemed determined to make him cum with just her mouth.
"You're going to make me cum, like actually, and I don't want to yet. Stop," Jisung pleaded.
Lix slowly pulled back, but she made sure she was sucking the entire time before her lips slipped away from his shaft with a loud pop.
"What if I wanted to make you cum like that? Have my brother's cum down my throat?" she frowned.
"Don't say it like that! I-,"
"But you are my brother, though. Doesn't it just make this all hotter? Us being siblings?" Lix asked with a smile, that surely wasn't fitting for her question.
Jisung felt his cheeks heat up as he pointedly looked to the side.
"That's what I thought," Lix said with a smug look. "You're just as much of a pervert as I am." Another bright, toothy smile.
Jisung took in the view of Lix in front of him, her cock peeking from under the short nightgown and hair messier than before. Spit making her lips glisten and some at the corner of her mouth.
"Come here," Jisung groaned and reached to grab Lix's wrists to pull her on top of him again. She dodged though, and instead she grabbed Jisung's hands and, with some difficulty, pulled him on top of her.
"I want you to fuck me. Do you want to fuck me?" she asked and looked at him right in the eye.
"Yes, please," Jisung said and cringed at how desperate he'd managed to make just two words sound, but then again, he was desperate. He didn't have to pretend anything at all anymore with Lix. The realization was liberating.
"Do you have lube? If you're clean, we don't need to use a condom," Lix asked while wrapping her arms around his neck, looking up at him.
"I have lube, just, here," Jisung said after a moment of searching between the mattress and the wall. "And I'm clean."
Lix grinned, taking the bottle of lube from Jisung and popping the cap open. "Good. Gimme your hand."
Jisung opened his hand for her and she squeezed the cool substance onto his palm.
"I just played with myself yesterday, so it shouldn't take too long," she said and moved Jisung out of the way to be able to get a good position to be prepped. "I thought of you while using my toy," she whispered, like revealing a big secret. And in a way, it definitely was just that.
Jisung warmed the lube between his fingers and then brought his middle finger to Lix's entrance. He circled the pucker and then gently pushed the tip of his finger in. He noticed the way Lix's chest heaved and how she exhaled slowly.
"Uncomfortable?" he asked.
"No," Lix shook her head. "I'm just so turned on."
"You're gonna cause me a coma," Jisung laughed as he pumped his finger in and out of her.
"You can add a second one," Lix gasped out the last words as Jisung hit the spot in her that made her see stars.
"Already?" Jisung asked but did as told, and after a few pumps of fingers, spread them open inside her, carefully doing a scissoring motion.
"Mmhh," Lix hummed with a smile. "Feels so good."
The comment and content tone to Lix's voice made Jisung smile and his heart swell in his chest. He wanted nothing more than to make his Lixie feel good and happy.
"I love you, Lix," Jisung said and reverently placed a kiss on the side of her knee. "So much,"
"Love you, too. The yin to my yang," she added playfully.
"I just thought that today too! Seriously," Jisung exclaimed, making Lix giggle.
"I mean, we have twin telepathy after all," she laughed.
"Always," he agreed and leaned down to kiss Lix properly. Lix's little satisfied sighs and sounds were so cute, them going straight to his cock that twitched and leaked even more, while Jisung couldn't help but smile his heart -shaped smile against her lips.
Adding a third finger, he could feel Lix clenching around the digits and trying to take them deeper by canting her hips. When about to add the fourth, Lix stopped him and pleaded to be 'fucked properly already'.
With a kiss to her lips, Jisung squeezed some more lube onto his fingers before stroking himself a few times to spread the substance all over his cock. He watched Lix watch him. Her eyes were dark and hungry, her bottom lip trapped between her pretty teeth.
"How do you want to do this? Preferences?" Jisung asked.
Lix shook her head. "I just want to be able to kiss you at the same time," she added after a moment.
Jisung felt his heart melting. "Perfect," he said and pulled Lix closer by the hips. "Up," he tapped her hip bone and slid a pillow under her hips.
He propped Lix's other leg on his shoulder and shuffled close, so close to her. Rubbing the head of his cock on her entrance, Jisung shivered. This was real, this was happening.
"Relax," he said gently and began pushing into Lix's heat.
Lix smiled up at him and let out the most adorable little moan at the stretch. Her insides were soft, even softer than her mouth, even hotter. It had been literally years since Jisung had had sex with anyone, he'd forgotten how intense the sensation can be.
"Fuck, my pussy, you're inside me," she sighed once he'd bottomed out.
Lix took a hold of Jisung's hand and brought it to the barely there bulge of his cock on her flat stomach. Jisung worried once again he'd cum on the spot.
"Fuck me," Lix's voice was breathy as she pleaded.
Jisung didn't need to be told twice. With one more kiss on his sister's lips, he pulled out a bit and thrust back in. She felt so, so good. Lix moved along with his movement, clenching down every now and then. Praising Jisung, she told him how good his cock felt inside her, how he was where he was meant to be. How she wanted to cum on his cock. Jisung couldn't hold back the whines that escaped his lips at her words.
He found a steady pace, fucking her with vigor, hands gripping her hips tightly, as if afraid she'd disappear if he didn't. Jisung felt sweat beading above his lip and licked it away, just hoping he wouldn't sweat too much as he didn't want to cover his sister in his sweat. The sounds Lix made turned Jisung on beyond belief, and she looked so erotic too.
Her nightgown was bunched up, revealing her hard, little cock that leaked against her flat stomach adorned with freckles here and there, her tits and hard nipples. Jisung's mouth watered at the thought of just sucking on her tit until she came just like that, although maybe that didn't happen in real life. Her blonde hair was a halo around her beautiful face, pretty lips seemingly stuck in a small smile as he moaned and sighed in pleasure. Jisung admired the constellation of her freckles and quietly wished he could add his cum to the mix. Maybe she'd let him. He felt his balls tighten and cock twitch inside her at the thought.
"Lixie, want to ride me?" Jisung panted and brushed stray hair away from Lix's eyes. He was, ashamed to admit, but getting a bit tired. He definitely needed to add cardio to his workouts, not just weights and more weights.
Lix just nodded and carefully moved her leg from where it rested on Jisung's shoulder. "I feared I'd get a cramp soon anyway," she giggled.
Jisung dove in for the nth kiss of the night with a chuckle, before settling onto his back and helping Lix climb to straddle him.
Lix took a tight hold of Jisung's cock, making him hiss. She lowered herself by spreading her bent legs further until she could feel his hot cock head against her taint. Moving her hand a bit, Jisung was quickly aligned with her hole and she lowered herself completely with a content sigh.
Lifting herself up before dropping down, Lix found a fast pace right away. She was determined to show her riding skills as she swiveled her hips and bounced up and down.
"You look so fucking hot, Lixie, I'm losing my mind," Jisung groaned, holding her hips tighter, as she leaned forward to place her hands on his chest, her perky tits bouncing along with her cock as she moved.
"Fuck! Right there, oh my god, right there," Lix moaned abruptly as Jisung hit her spot.
Jisung felt his cock kick again. He adjusted his grip on Lix's hips and began thrusting up into her, hoping he'd hit that bundle of nerves again.
"Shit, oh god, I'm gonna cum soon!" Lix's panted as she switched to bouncing in place with only small movement, but it hit just the spot. Literally and figuratively.
"I will too if you keep sounding and looking like that, fuck!"
"Lixie," Jisung added a bit later, voice strained as he tried to maintain his last bits of sanity. "I'm close and just letting you know I cum a lot, so tell me where you want it."
Lix was pretty sure her eyes did a full 360 in their sockets at the his words.
"So let's cum together," he continued, and brought his hands that had been caressing her thighs back to hold her hips.
She could only moan out loud as a response, because Jisung then wrapped a hand around her cock and began stroking it with firm, quick strokes.
"You're making me cum! Jisung, you're gonna make me cum!" Lix's voice was high and wanton.
Better than any porn star, Jisung thought and gave a few more flicks of his wrist while stroking Lix. With a choked, high-pitched moan, she came all over her chest, some of the cum even hitting her neck.
The sight and sound was all it took for Jisung to cum with a pitched whine of his own. His eyes threatened to close tightly instinctively as he came thick, hot ropes inside his sister, but Jisung forced himself to keep his eyes open and watch Lix instead.
"I can feel, oh my, I feel your cum in my pussy," Lix sounded almost delirious, despite at the same time climbing off of Jisung and scrambling to bring her face to his cock, catching all of his remaining release on her face and tongue.
"Fuck, Lixie," Jisung groaned, reaching to touch her, anywhere, just to feel her skin. He was certain he wouldn't go soft at all at this rate, and could just fuck Lix again right away.
Lix's face was completely covered in cum, a generous amount dripping down her chin to her tits as well, when Jisung finally stopped cumming. She was smiling, looking so content Jisung wondered if she was his sister at all, and instead a succubus.
"That-," "I-," the twins began talking at the same time and erupted in incredulous laughter.
"You first," Jisung said after a moment.
"When you said you came a lot, I definitely didn't think this much," Lix said with a giggle. "But I loved it."
"I somehow had a feeling you did," Jisung replied with a chuckle. "You're completely soaked in it," he said, a hint of pride creeping into his voice. "But I should get you a washcloth so you can wipe your eyes," he said and then grimaced. Post-nut-clarity was quickly setting in and the sight of his sister literally coated in his own cum was starting to feel more gross than hot.
"Yes please," Lix laughed and sat up straight.
Jisung was soon back. He gently held her hair as he wiped the worst mess away from her face. Once she was able to open her eyes comfortably, she locked eyes with him and licked her lips, slow and deliberate. Yup, she had to be a succubus.
"Shower with me?" Lix asked, taking a hold of Jisung's hand.
Jisung nodded quickly and let himself be dragged into the shower. He had Lix sit on the edge of the tub while he carefully washed her hair and applied conditioner, and Lix washed his back, gently tracing the defined muscles and peppering kisses all over his shoulder blades.
"Definitely my favorite way of celebrating so far," Lix laughed as Jisung pinned her against the shower wall to kiss her properly.
"Mine too. Happy birthday, twin," Jisung grinned.