note: ohh this ask is really amusing to me. i'm not fond of most comparisons nctzens make re: jaehyun. so i was pretty salty/annoyed about jaehyun = sion ajsldkf BUT then i had a moment of enlightenment a while ago and decided to ship them together instead LOL... actually i have a tiny fic draft/idea of sion x jaehyun saved on my computer... ANYWAY i do see the vision, anon...

1.2k words 😵😵😵

cw: incest, mommy kink, age difference (jh's 35++)

---

sion's in college, he's surrounded by pretty women and handsome guys regularly. attractive people that are his age. attractive people that are not related to him at all. he has crushes on celebrities, and has some mild interest in his fellow classmates.

however, for years, there's only one person he's truly and deeply attracted to. that makes his skin warm all over, and cheeks blush, and smile brighten as full as the sun. and that's jaehyun.

jaehyun, as in, his mommy... really.

no matter how many times he's watched porn of different types of people or made-out with people his age, the main person on his mind was his mommy. it's wrong, it's bad, and sion feels immensely guilty every time he has those thoughts about jaehyun. however, he can't help it!! at all... he really can't. like when he's alone, jerking off in his dorm room, his brain is immediately filled with jaehyun. pretty, beautiful, gentle, sweet, wonderful: jaehyun. his mom who is literally the most gorgeous person he's ever met. images of jaehyun on his knees for sion plague his mind, and that's what gets him off. 

sion has a problem. he's tried all other means of fixing it, but frankly he's tired of failed hook-ups. so, this problem, he has decided will be solved in the most 'wrong' way. but whatever.

sion's on spring break, lounging around in the living room, playing on his playstation 5 casually. jaehyun's in the kitchen, baking a cake, and tidying up. singing and humming to himself. not only is his mommy so beautiful, he has the most beautiful singing voice ... and softest thighs and smallest waist and cutest butt-- and now sion's video game character has died because he got so distracted. he lets the GAME OVER screen linger until the game system loads back to the game home screen.

meanwhile, he's watching jaehyun's movements. undressing his mom with his eyes. imagining how jaehyun would taste on his lips. sion sighs in discomfort as he can feel his dick twitch with interest and swell up, aroused. 

jaehyun finally notices that his son is watching him so intently. "sion baby, are you okay?" jaehyun smiles at him. there's flour on his shirt, and cake batter on his chin. the son wonders is it normal to find your mother breathtakingly adorable.

"uhhh, i don't know." he says. he gets up, stretches, and slinks over into the kitchen. jaehyun's busy yet he doesn't shrug off sion when the son wraps his arms around jaehyun's torso. "mommy." it comes out whiny and needy.

"what's up, baby?" jaehyun asks. reaching around to pat sion's leg.

"i'm tired," sion fibs. "come cuddle with me?" he plays up his supposed tiredness by fake yawning. jaehyun cooes and fawns over him. sion's always been spoiled and pampered and catered to as jaehyun's one and only child. so, it's no surprise that after jaehyun's finished the cake, put it in the oven, and set up a timer, he does in fact join sion to lay down and cuddle. jaehyun being the little spoon because sion insisted.

sion decides today will be the day. he starts with kissing his mommy's face, innocentlike. hugging jaehyun around the middle. again innocentlike. his mommy doesn't catch the hint until sion's full-on rocking his hips against jaehyun's ass - the only barrier being their cotton pajama pants. sion moans louder than he anticipates; the friction against his dick feels so good, and jaehyun's so warm and soft and comforting. just perfect.

"sion, are you feeling under the weather?" jaehyun's kinda naive to his own son's advances. 

sion decides to get bolder. partly he is afraid of punishment, of repercussion. but his dick is doing most of the thinking right now... sion shoves a hand into jaehyun's pajama pants, searching and promptly finding jaehyun's pussy. sion shakes. it's his first time doing this...

"sion, what are you doing?" jaehyun doesn't sound mad, just confused, concern. sion doesn't deserve him.

sion  kisses along jaehyun's neck and shoulder as he rubs his hand against jaehyun's bare pussy. "mommy. i really love you so much." he says it multiple times, trying to really emphasize his feelings. all while slowly fucking jaehyun with his hand. rubbing, making jaehyun wetter and wetter. making his mommy flinch and squirm and shake.

"please, i can't stop thinking about you," sion confesses. he confesses a lot of things. many things he's held inside, all while rocking his hips against jaehyun's ass and fucking fingers into jaehyun's pussy.

jaehyun protests verbally, but his resolve weakens as sion begs and pleads and continues pleasuring him. it's a surprise to both of them when jaehyun cries out and cums. 

the next surprise is jaehyun letting sion pull his pants down. the son moves down the bed until he's facing jaehyun's pussy. "i've been fantasizing about doing this every day." 

jaehyun's looking conflicted but that expression changes when sion dives his face into jaehyun's wet pussy. the son doesn't have experience in pussy eating, but he eats jaehyun out with the most enthuasism. years of porn and erotica in his mind. he laps at jaehyun's sensitive clit, sucking it into his mouth. he slurps up jaehyun's previous release. and tongue-fucks his mommy until jaehyun's clenching his thighs around sion, and coming again...

except jaehyun's doing more than coming -- he's releasing near clear fluid all over sion's face. squirting. sion moans, taking as much in as he can. whereas, jaehyun's gasping and shaking. 

jaehyun's quiet for several minutes and then he's admitting how rare it is for him to squirt. sion grins at his mommy's disbelief, happy to have done well. 

jaehyun's still apprenshensive and cautious and shy about it -- this, what they're doing. but sion isn't. he worships his mommy's body like he's always wanted to. cherising him all over. his thighs, and legs, and waist, and chest, and arms. everywhere. 

the most amazing moment of sion's life happens when he slides into his mommy's pussy. jaehyun's on his back, legs wrapped around sion. face hidden behind his hands. skin married with sinful bitemarks and kissmarks. his platinum hair a mess. sion excitedly tells jaehyun,mommy, he loves him as he pushes in.

oh.

sion goes slackjaw, unable to think of much else as he starts fucking his mommy. deep and fast. there's no finesse, no rhythm. but there is effort and excitement. sion thrusts his virgin dick into his mommy again and again. moaning as he watches jaehyun enjoy himself. sion captures jaehyun's lips, a tender and experienced kiss. he fucks jaehyun raw, and wild. an attempt at gentle goes out. he fucks jaehyun like he wasn't meant to do anything in this world. snapping his hips forward, shuddering at how jaehyun's sweet wet pussy stretches for him. takes him in again and again.

how mommy gasps and whines and calls sion a "good boy". how mommy squeezes his legs around sion's waist and clutches his arms around sion's shoulders. how jaehyun begs for more and calls out sion's name in the most high pitched voice sion has ever heard. jaehyun rubs at his own clit as sion drills his pussy hard until jaehyun is whining and coming again. his eyes roll back as sion continues on, fucking jaehyun crazy deep, making him squirt for a second time. jaehyun cries and shakes as he drenches them both in fluids. sion loses it soon after,  cumming into his mommy's pussy, painting his walls.