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Sunghoon wakes up with a throbbing headache and his own dried spit on his cheek. He can't feel his left arm, and for a moment his sleep-dizzy brain starts making up scenarios about how he was abducted and his arm has gotten cut off and-
When he opens his eyes, he sees a familiar tuft of shiny, black hair obscuring his numb arm. His girlfriend sleeps peacefully, not a care in the world about the continuous damage Sunghoon is experiencing.
“Heejin-ah,” he croaks out, shaking her gently off of him, “Wake up, you're killing me,” he jokes.
Heejin groans and only mildly adjusts her position. She buries her face into his bare chest, which is not much better but at least blood begins flowing back into his arm.
He sighs, and for a moment he simply stares up at the ceiling, trying to blink the sleep away. When he picks up a phone off the bedside table, Heejin’s, he notices, all the charms attached to it rattle and it's entirely too loud and he's beginning to get overstimulated. Checking the time, he's annoyed to find out it's 2 PM on a Sunday. The whole day is basically gone, and he has a stupid fucking test on Monday!
“I'm never drinking again,” he thinks out loud, and Heejin lets out a long hum in agreement, “God, Heejin-ah… Did you not tell your dad you'd be sleeping over?! You’ve got 13 missed calls,” Sunghoon panics, sitting up and shaking his girlfriend awake for real.
“Hm? Uh? Oh,” she blinks quickly at the phone Sunghoon is pushing into her face, and curses as she hurries to return the call.
Sunghoon shakes his head disapprovingly as Heejin guiltily listens to her dad scold her on the other end, and decides to bother her. He tickles her bare stomach with the lightest touch of his fingers, and she blushes, trying not to giggle as she obediently replies to her father’s request that she gets home as soon as possible. He continues teasing her until the call is over, after which Heejin takes his hands in hers and twists his wrists until he's begging for forgiveness. He should probably accept Heejin’s invite to the gym next time…
“We're not doing anything right now, so stop trying,” she warns him, placating Sunghoon with a small peck on the cheek before getting up. He frowns, defeated, “Dad is really mad. I really need to get home, Sunghoon-ah! Do you wanna come over and explain yourself to him?” She teases, hands on her hips. She shakes her head, grabbing her clothes off the floor.
Well, in fact, Sunghoon thinks that's actually a good idea! He crawls over, closer to her, hooking his chin over her shoulder, “Can I actually? I’m driving you back, anyway,” he proposes, and Heejin side-eyes him with an Are you sure? look, “I can make a good impression!” He claims, helping her put her bra on.
‘If you really want to,” she smiles, “My dad's kinda…” Heejin takes a moment to think, “Well, chatty. He asks so many questions, and he has so many stories to tell,” she sounds a bit exasperated, but she has a sweet smile as he talks about him.
As far as Sunghoon knows, Heejin has a good relationship with her dad, but she's never mentioned anything about her mum in the few months they've been dating.
“He sounds nice,” Sunghoon nods, getting himself ready, “I’ll ask him for embarrassing stories about you,” he jokes, and Heejin punches him in his side, nearly knocking the air out of him. God, he needs to stop dating athletic girls.
.
So, Sunghoon is staring a bit. It's just that… Heejin never told him she has an older brother?
“Hi,” she waves, going in to hug the guy who opened the door for them, “Dad, this is Sunghoonie, he's gonna have dinner with us,” she states simply, gesturing between them.
DAD?! Sunghoon must have misheard. There's no way this man is Heejin's father!
“Ah, Sunghoon, it's nice to meet you,” the guy says, reaching out to shake Sunghoon's hand. In a bit of a trance, Sunghoon reaches out slowly, “You can call me Sunoo. Or dad? Is it too soon? Sorry,” the man - Mr. Kim, Sunoo?! - smiles shyly as Heejin punches his shoulder playfully and pushes past him, clearly embarrassed by her dad already, “Come in, come in! Thank you for being so kind and bringing Heejinnie home. She had me so worried,” Sunoo pouts, ushering Sunghoon inside.
Sunghoon shakes himself into reality, “No worries, Mr. Kim. I'm sorry about it, we fell asleep watching a movie, I thought she would have messaged you…”
They were not watching that damn movie, and they were drunk off their asses. Heejin’s dad doesn't need to know all the details on their first meeting, though.
As Heejin grabs his hand and leads him into the kitchen, where she starts helping her dad, Sunghoon can't help but continue staring.
Mr. Kim is… young. And pretty. Uh, handsome. He looks great for his age? Fit?
Sunghoon can feel his face getting hotter the longer he stares, and he figures it's probably kind of inappropriate to be thinking about how pretty his girlfriend's dad is when she's right there.
Still, Sunoo has this neat, black hair, and perfect skin, with only some smile lines around his eyes and mouth - small imperfections that Sunghoon only notices when Sunoo talks directly to him, and remind him that Sunoo is indeed older than him. He holds himself with so much confidence, and he has the body proportions Sunghoon dreams of. Of… having himself, of course. On his own body. Well, not… Not like-
Holy shit, can he relax? Even his own inner voice is getting embarrassed, trying to justify his thoughts.
“Oh, Sunghoon-ah, would you like a drink?” Sunoo offers, grabbing a glass, ”We have water, sparkling water, tea, coffee, orange juice, apple juice, we have sugar-free lemonade, and you know what, it's actually pretty good. I got it because apparently I need more vitamin C, and my sugar is kind of high lately-”
“Dad,” Heejin whines, “I'll just get him some water…”
Sunoo smiles apologetically, and Sunghoon's eyes widen at the weird thing his heart does. Dear God, there it is again. That oddly adorable smile. Odd, because he’s not used to being so endeared by men twice his age who could, quite literally, be his dad. Either way, the good looks definitely run in the family…
.
Mr. Kim talks a lot. Heejin wasn't kidding. But his voice, while high and a little whiny, is still pretty cute, so Sunghoon doesn't mind listening to him.
“Heejinnie’s told me a lot about you, Sunghoonie. Sounds like you've been treating my daughter well,” Sunoo puts on a deeper voice and a frown, trying to mimic the stereotypical father Sunghoon was expecting to meet. He laughs at his own joke, and laughs even harder when Heejin covers her face, cringing at him.
Sunghoon smiles sheepishly, “Of course. She's amazing,” he states, gently grabbing his girlfriend’s hand and caressing her knuckles with his thumb. Heejin relaxes and squeezes back, staring at him sweetly.
Sunoo audibly aww’s, sounding so emotional that it makes Sunghoon laugh.
“You know, ever since I started teaching-”
“You're a teacher?” Sunghoon interrupts, curious to learn more about what Mr. Kim does. Until now, the only job Sunghoon could have come up with for him was “model”. Sunghoon was ready to ask him to bring out his magazine covers, silently hoping that at least one of them was Playboy.
Sunoo nods, “Mhm, I teach Japanese!”
Sunghoon nearly gets whiplash with how quickly he turns towards Heejin, “Babe! Why didn't you tell me?” He gasps, “Mr. Kim, Can you please tutor me?” It's probably inappropriately early to be making requests of him, but his grades have been bothering him lately.
“Well, I actually teach younger-”
“Pleaaase, I really need to pass, but our teacher is useless!” He complains, and Heejin giggles at him, finding him absolutely adorable.
“He's not lying,” she agrees, “Dad, could you do it?” She asks, wrapping herself around Sunghoon’s arm. They both give Sunoo the most manipulative puppy eyes he's ever seen, leaving him without a choice.
Quickly, Fridays became a ritual. A weekly pilgrimage to Sunoo’s modest home, exclusively for tutoring - Heejin had insisted that they only meet up at Sunghoon’s place the rest of the week, too embarrassed to do anything with her father in the house…
It was honestly rather nice - since Sunoo is used to being patient while teaching younger kids, Sunghoon feels at ease with him. And he does it for free, too, since Sunghoon is so good to his daughter.
With each passing week, Sunghoon gets to learn more and more about Mr. Kim as they chat during their ten minute breaks from tutoring. He learns that Sunoo is 36, and that he had a troubled past. He learns that an older woman took advantage of him when he was only 18, and left him to take care of Heejin all by himself. He learns that Sunoo wears reading glasses, and that he owns several strange and funny ties. He learns that Sunoo likes two sugars in his coffee, but he only has one since his doctor warned him about his sugar intake. He learns that Sunoo has an intimidating yet sexy resting bitch face. He learns that Sunoo has a very pronounced Adam’s apple, and that his fingers are long and thin, that his thighs are plump, that his lashes are very long and that he has around 7 moles on the left side of his face. Maybe more, waiting to be discovered? Sunghoon would like to get closer and find out.
He's always felt it, after all - this interest in Mr. Kim. It’s been haunting him since the first moment he laid eyes on him. If Heejin hadn’t been there at the time, he worries he would have said something inappropriate as soon as Sunoo opened the door.
The TV hums in the background, casting a warm glow on Sunoo’s face as he leans over Sunghoon’s textbook.
“Okay, Sunghoon-ssi, let's look at this sentence again. The particle usage is incorrect here…” His voice is gentle, melodic, yet Sunghoon feels a distracting simmering under his skin.
It’s like this - Sunghoon feigns some struggles with kanji and grammar, milking every possible minute of Sunoo's attention. The Japanese is secondary, a flimsy excuse to be in his presence, to breathe the same air.
He pretends to focus on the textbook, but his gaze keeps drifting. To the way strands of Sunoo's dark hair fall across his otherwise exposed forehead. To the way his lips move as he enunciates each syllable. The way his glasses are resting on top of the tall bridge of his nose. He is fascinated, consumed.
"Sunghoon-ssi?" Sunoo's voice pulls him back. "Are you listening?”
The words do finally register, yet he still stares. He swallows.
“No,” Sunghoon replies honestly, his gaze flickering between Sunoo’s eyes and lips.
Mr. Kim sighs with a smile, “You must be tired. Don't worry, let's just take a break,” he says kindly.
Sunghoon leans back against the couch, staring at the ceiling.
“If you wish, we can just move today's lesson to next Friday,” Sunoo offers as he fixes the two of them some more tea.
“No,” Sunghoon blurts without thinking, taking Sunoo by surprise, “I- I mean don't worry, Mr. Kim. I think you're right, I'm just a bit tired… You look a bit rough yourself,” he teases, wanting to put Sunoo at ease.
The latter chuckles, “Ah, well, teaching is pretty exhausting. Kids these days are…” Sunoo smacks a palm over his mouth, “Ah! Here I go, the boomer talk,” he shakes his head and Sunghoon laughs at him, “It's just… Heejin didn't use to be so difficult growing up. Kids just don't want to listen anymore. Or maybe I’m just boring?” Mr. Kim pouts and Sunghoon struggles to hold his emotions in.
“Well, you've done an amazing job raising Heejinnie, so I don’t think it’s your fault,” Sunghoon tells him honestly.
The break ends way too soon, because he's back to trying to read a textbook that might as well be written in hieroglyphics when all he can focus on is the scent of Sunoo’s cologne.
He knows he's walking a dangerous line, obsessing over his girlfriend's father, but it's precisely that forbidden allure that makes it so hard to resist.
“Okay, so,” Sunoo’s voice pulls him back to the present, momentarily forcing him to focus.
Sunghoon mumbles an incorrect conjugation for "to sleep" and Sunoo gently touches his hand, guiding his finger across the textbook. "No, remember the exception for verbs ending in 'ru'. It's 'neru' – 'nete'.”
The contact is electric. A jolt runs up Sunghoon’s arm, leaving his skin tingling. He looks up, their gaze locking. He sees a fleeting flicker of awareness in Sunoo’s foxy, hazel eyes - a mirroring of the nervous anticipation he was feeling.
“Mr. Kim,” he says, his voice low and husky, “I’m having a really hard time concentrating.”
He can't help himself.
Sunoo's grip tightened on the textbook, "Is… is the material too difficult, Sunghoon-ssi? We can try a different approach.”
Sunghoon shakes his head quickly, his eyes never leaving Sunoo's. “No, it’s not the material,” He leans forward. The tension thickens, suffocating him. "It's… you.”
Sunoo's eyes dart around the room, unsurprised, like he knew this was coming, yet… guilty, seeking an escape. "This is… inappropriate. I'm… just your tutor. I'm also..." He trails off, unable to articulate the awkward truth.
Sunghoon finishes his sentence for him, head hanging low, "You're Heejin's father."
The words hang in the air, heavy and undeniable. Sunoo tries to stand up and pull away. "This… this can't happen.”
He says that, but the nervousness in his voice betrays him. He wants this as much as Sunghoon does. It's not just a one-sided infatuation, but reciprocated, although cautiously hidden beneath layers of… fear.
Sunghoon pulls him down by his hand, leaning in close, his voice a mere breath against Sunoo’s ear. "Why not?" He murmurs, "Is it because of Heejin? Or is it because you’re afraid of what you want?"
As Sunoo struggles to complete a fractured sentence, Sunghoon reaches out to hold his face, his thumb caressing his soft cheek.
He knows he should stop. He knows he should apologize and pretend this never happened. But the pull was too strong, the desire too consuming. He wanted a taste.
He leans in, his lips hovering just above Sunoo's. "So, what is it, Mr. Kim? What do you want?"
The answer is written in the silent plea in Sunoo's eyes, in the slight parting of his trembling lips.
And at this moment, Sunghoon knows that the Japanese lesson is officially over.
His lips find Sunoo’s before he can start listing out reasons why he shouldn't be doing this right now. Sunoo’s lips are soft, and warm - so warm, Sunghoon feels like he’s getting burned, so he pulls away for a second. He's still close enough that Sunoo’s face is blurry, but he can feel the tremor in the man’s breath as it lands on his lips.
He crashes his lips against Sunoo’s again, this time with the urgency he's feeling inside, unrestricted by logic and reason. His tongue licks and probes, drinking up every last drop of the osmanthus tea Sunoo was just sipping on. The angle is awkward, and he doesn't yet remember what to do with his hands, but he keeps on kissing Sunoo until he gets too hot under his clothes.
Sunoo clenches his fists like he's worried about what he might do if he allows his body to act on its own, and he only relaxes when Sunghoon pulls both of his hands into his, pushing him back against the arm of the sofa. Their teeth clash painfully as both of them are too stubborn to pull away, a mess of lips and limbs as desperation takes over them.
“Mr. Kim-” Sunghoon mutters against his mouth.
“Sunoo,” he gets corrected, “Don't- mmh, don't be so formal when your tongue is in my mouth,” Sunoo complains, escaping Sunghoon's hold and wrapping his arms around his shoulders.
Sunghoon continues talking between kisses, as if he'll start fading to dust if he pulls away for too long, “Sunoo,” another kiss, and another one, “I don't wanna stop.”
“Then don't,” Sunoo mumbles, pulling Sunghoon closer.
As he slowly moves away, Sunoo follows his mouth like a puppy, “Are you sure?” Sunghoon asks, biting his lip as he looks into the older man's eyes.
Sunoo swallows and his eyes drift away. Sunghoon wants to smack himself. Why would he ask?! He can see the frown on Sunoo's face, the guilt in his knitted brows. They're finally coming face to face with the reality of the situation, and it doesn't feel good. It doesn't feel right. And yet.
Sunoo cups his cheek in his warm hand. Sunghoon leans into the touch needily, staring at him, a silent beg on his face.
“I'm not… I'm,” Sunoo sighs, caressing Sunghoon’s cheek, “I'm not sure. If anything, I'm sure that we should not be doing this right now, Sunghoon-ssi.”
“But you want it,” Sunghoon finishes his thought, crawling between Sunoo’s legs, hovering above him. He smirks when all he gets in return is a little nod and Sunoo makes more space for him.
He's about to ask if they should move this to the bedroom, but the figures that would probably be too… personal? Too intimate? They'd have to pass by Heejin’s bedroom to get there, where they'd be reminded of just how wrong this is…
“S-Sunghoon-ssi?” Sunoo asks when Sunghoon’s lips stop moving.
Sunghoon realises he's been zoning out, thoughts of his girlfriend invading his mind. He… He loves her, he really does. She's kind, she's sweet, she's gorgeous - she definitely takes after her father… A-anyway, she's more than Sunghoon could ever ask for. He would hate to hurt her, to lose her…
Yet as he looks down, seeing how he has her father flushed and needy under him… What she doesn't know won't hurt her.
With renewed vigour, Sunghoon buries his face in Sunoo’s neck, kissing and nipping at the sensitive skin. Sunoo whines in surprise but turns his head to give Sunghoon space, small giggles escaping him when he feels ticklish.
Sunghoon busies his hands with Sunoo’s stupid fancy shirt, unbuttoning it as quickly as he can. He leaves a trail of wet kisses all over Sunoo’s chest and tummy, raising goosebumps as he goes.
He pulls away to admire Sunoo’s body. Supple, defined yet soft and bouncy under his touches and squeezes. He subconsciously licks his lips as he grazes Sunoo’s nipples with his thumbs, feeling as they harden under his touch. He latches his mouth onto one as he squeezes Sunoo's hip, leaving his fingerprints and teeth marks on every inch of him.
It's weirdly hot, having a guy twice his age at his mercy, “So do you qualify as a DILF?” He asks as he swirls his tongue around Sunoo’s nipple, looking up at him.
Sunoo glares at him over his glasses, eyes widening like saucers, “What the- mmf, what the hell is your problem?”
Sunghoon laughs, pressing a kiss to his chest in apology, “Are you not into that?” He asks, sitting upright to remove his hoodie, “Should I not call you daddy?”
Sunoo doesn't know what to react to first: Sunghoon’s horrible fantasies, or Sunghoon's abs.
He quietly reaches his hand out to trace the defined muscles, gasping when Sunghoon grabs his wrist. He flattens Sunoo’s palm against his abdomen, guiding him with a smirk. Their eyes lock and Sunghoon can feel his dick twitch with anticipation in his pants.
It's getting harder to discern Sunoo’s features as the sun goes down. Sunghoon turns to look at the time, swallowing nervously as the white letters on the digital clock glow ominously at him, “Heejin must be on her way back,” he points out, “We'll have to be quick, daddy.” Sunoo whines at the horrible pet name but lets Sunghoon unbuckle his pants as his hands move to help him back.
Sunghoon lowers himself until he’s at eye-level with Sunoo’s half-hard cock, cursing as he feels its weight in his hand. He looks up at Sunoo as he licks a stripe from its base to the tip, closing his lips around the head.
“F-fuck, Sunghoon-ah…” Sunoo throws his head back as Sunghoon bobs his head, pretty lips wrapping around him and enveloping him in the burning heat of his wet mouth. He forces himself to watch as Sunghoon sucks, unsure if he'll ever get to experience this again after today.
The guy is a fucking tease, looking up at Sunoo with big, shiny eyes and eyebrows pinched and pleading. He takes Sunoo all the way without gagging, just the faintest squelch in his throat escaping him when the tip hits the back of his throat. “Fuck, fuck, fuck,” Sunoo can't think straight after that, accidentally bucking his hips and provoking more noises from Sunghoon's throat. Sunoo moans wantonly as he gets stuck in a loop of his body reacting to Sunghoon's vulgar ministrations.
It’s sweet, in Sunghoon’s opinion. He's clearly desperately holding back from going too far, not wanting to make Sunghoon choke. It’s sweet, the way he needs Sunghoon to allow him to fuck his mouth. The way Sunghoon has to grab Sunoo’s hands and put them on his own head for support.
Sunoo seems to enjoy being led, being guided, contrasting with his role as a teacher where he's the one in charge all day long.
“So good… So, mmh, fuck…” Sunoo’s fingers twist in his hair - mostly for comfort, he's still being awfully reserved and respectful despite Sunghoon letting him use his mouth. What a gentleman.
Sunghoon’s tongue digs into Sunoo’s tip as he begins tasting his precum, “Mm, don't come yet,” he says as he pulls off him with a pop.
Sunoo silently nods, his whole body shivering as the warmth leaves him.
“Good boy,” Sunghoon smirks at the older man, “You're being so good for me,” he praises as he smooches Sunoo’s lips.
“D-don’t say it like that… I'm older than you…” Sunoo blushes, squeezing Sunghoon’s bicep, drawing with his fingers on his skin.
Sunghoon scoffs as he takes his dick out of its confines, “Yeah, that's what makes it hot.”
Sunoo whines as if on command when Sunghoon's length presses against his own, its size and weight intimidating in the most arousing way, “Why the fuck is everything about you so big…” He protests, eyebrows furrowed as Sunghoon grabs his wrists and pins them by his head.
“You're just small,” Sunghoon argues, leaning over Sunoo and pressing his forehead against his. He releases one of Sunoo’s hands to wrap it around their cocks instead, rutting against him like a dog, “God, I wanna be inside you so bad,” Sunghoon whines, leaking precum on Sunoo’s tummy. He collects it and lubricates their cocks with it as he continues thrusting against Sunoo.
Sunoo’s arousal is nearly nauseating as he forces himself not to come on the spot at the idea of Sunghoon fucking him. He feels a gnawing ache in his tummy thinking about it. He wishes Sunghoon could take him right there, wishes they could do it again in the shower, in Sunoo’s bedroom, having to keep quiet when his daughter is home-
It's close to an explosion, the way Sunoo comes. His eyes roll back as he moans, cum spilling onto Sunghoon's hand and on his own chest, taking the younger one by surprise.
“Shit, Sunoo…” He gasps, throbbing against Sunoo’s spent cock.
“S-sorry,” Sunoo whines as Sunghoon continues to rut against his softening dick, overstimulating him until it hurts.
Sunghoon kisses him to distract him until he finally comes, creating a bigger mess on Sunoo’s bare skin. He feels dizzy as his dick empties out against Sunoo’s. They swallow each other's moans as their tongues interlock, riding out the aftershocks of their orgasms. Their heavy breathing is all Sunghoon can hear past the ringing in his ears. He sits up as his heartbeat begins to even out, admiring Sunoo’s dishevelled body. Needless to say, Sunghoon can't remember the last time an orgasm nearly blacked him out.
“I want more,” Sunghoon says, absentmindedly.
Sunoo looks at the clock, “What, like, right now? I need to take a shower before Heejin arrives, we don't-”
“No, like, I… This isn't the one and only time, right?” Sunghoon asks, a little nervous tilt in his voice.
Sunoo stares at him, the post-nut clarity reminding him why he shouldn't have agreed to this in the first place. He covers his face with his hands, groaning.
With a sigh, Sunghoon throws his hoodie back on and buttons himself back up, ignoring the sticky feeling. He probably shouldn't be asking his girlfriend's father if he should keep cheating on her, now that he thinks about it. But Sunoo enabled it, so he can't take all the fault…
Sunoo stands up from the couch with difficulty, everything cracking and popping in his body. Sunghoon smirks at him, holding back from making any DILF jokes. “I'll see you next Friday, Sunghoon-ssi,” Sunoo says quietly, pushing his glasses back up on his nose..
Sunghoon doesn't really know what to make of that as Sunoo turns to leave. Just before he does, he turns back to Sunghoon and looks towards the locked door before kissing him square on the lips. He scurries off to take a shower before Sunghoon can say anything, too dazed by the feeling on Sunoo’s lips against his, still.
It's strange. It's wrong and it feels as much. It feels even worse a couple of minutes later, when Heejin arrives home. She jumps into Sunghoon's arms, kissing him when he can still feel the taste of her father's lips on his own.
Sunghoon feels dirty. For lying, for cheating, for craving Mr. Kim more, and more, and even more.