Though rationally he knows Jimin cannot get pregnant, his alpha disagrees entirely.
Ever since he laid eyes on Jimin in alpha camp, he somehow registered him as an omega. Probably just his own wishful thinking, his overwhelming want and need hoping for Jimin to somehow be an omega.
Which has nothing to do with it being more traditional, and everything to do with the need to breed him.
Though Jimin doesn’t slick like an omega, he’s nice and wet when Jeongguk finally slips into him. And with his previous ruts he can’t remember being all too conscious, but right now he’s hyper-focused on Jimin.
The expression on his face when he thrusts into him, the sounds that slip from his plush lips, the way his cheeks flush, how he wraps his hand around his cock and strokes himself prettily.
His body is divine, lean and muscular, arching for him, pretty beads of sweat on his chest. Jeongguk leans down to taste them, a mix of sweat and wildfire burning on his tongue.
“Mmh—“ Jimin’s hand flies to his hair, fists into it tightly. “You can take me harder, I’m not made of glass.”
“Mm— I know.”
He kisses up to Jimin’s neck, drags his teeth over his mark.
“Ah—“ Jimin gasps. “Fuck.”
Maybe it’s because they’re mated, that he isn’t as rough as usual. The sensation of thrusting inside deep, Jimin’s heat wrapping around him all the way to the base, that’s what really makes his alpha preen.
Though Jimin’s got those wild eyes, that same wicked look he got back at alpha camp, that dangerous edge as he brings his lips closer to his ear.
“This is what you’ve been wanting to do to me, hm?”
Jeongguk only moans as an answer, can’t really talk at that well anyway.
“You wanted to knot me since the first time we met.”
“Mmh.” He nods, snaps his hips forward a little harder, eyelids sinking.
“God, you hated that I was an alpha, didn’t you?” Jimin’s leg curls against his hip, forces him to pick up the pace. “Kept hoping that I’d spread my legs for you, that I’d slick for you.”
A guttural moan slips past his mouth now, the mental image of Jimin’s rim leaking slick has his throat running dry.
“F-fuck— yes.”
The room fills with the sound of skin slapping against skin, Jimin’s body rocks with the impact of his hips snapping against his, and Jeongguk leans back on his knees just to watch.
Just to watch his cock disappear inside of Jimin, to see that mental image that isn’t there; Jimin doesn’t slick for him, doesn’t submit to him, just has that wicked grin on his lips that turns him on beyond measure.
He is not even deciding the pace, Jimin is moving back against his cock, digging his heel into his ass to make him fuck him harder, like he’s saying I can take it
“Fuck me like you’re trying to bitch me, Jeon.”
Oh—
He gasps, halts all his movements for a solid second, and then just gives in.
All rationality slips and he just takes the back of Jimin’s thighs and fucks him, lets his body take over.
It’s rough and hard, the old wooden bed creaks with the impact of every thrust, headboard knocks against the wall in a rhythmic manner. Neither of them really chose the best place to fuck, his old bunk bed made even more noise than this.
“Fuck— ngh— that’s it.” Jimin pants, throws his head back, mark all on display. “Just like that.”
Jeongguk groans, eyes fixated on his mark, almost jealous of himself for having bitten Jimin without even knowingly claiming him.
He leans down just to put his teeth on Jimin’s neck, breathes him in and bites down hard enough to soothe himself, not hard enough to break the skin.
“A—ah fuck—“
Jimin’s hand moves rapidly between their bodies, down to his cock and curls it around himself.
Jeongguk grins against Jimin’s neck, licks over his scent gland, rubs his face against it, everything to drown him in his own scent, to claim him so everyone else can smell him on Jimin. None of his squad should even get the slightest idea in their heads that they have a chance.
Heat rushes down his spine, sweat runs hot on his body as he keeps up the pace, and as Jimin moans underneath him, bares his neck even more, he finally feels the swell of his knot.
“Ngh— fuck— Jimin, my knot’s gonna—“
“I can take it.” Jimin pants. “Knot me, I can take it.”
“But do you want it?”
He asks, for that slight bit of rationality left. Jimin is an enigma, his body is not really made for taking knots, and even if it was not everyone—
“So fucking bad.”
..
Oh.
He can’t function after that.
All he sees are those wicked, monolid eyes, that pretty, fucked out look on his face and then his vision blurs.
His orgasm rips through him, making all his muscles go taut, and his knot pushes past Jimin’s rim, stretching it, filling him up, but all that really matters is how Jimin moans and searches for his scent, pulls him down to breathe him in, nose against his scent gland, plush lips on his neck.
“Fucking hell that’s big.”
“Mmh—“
He almost whimpers, can’t really think, just needs to make sure his knot is all the way inside, that none of his cum can seep out— just in case he can knock Jimin up, he can’t let any of it slip out.
Usually after his orgasm he cools down for a while, but heat is licking at his body, wildfire intruding his senses, and fuck— he needs to stay still, keep his knot inside, but his body just moves.
He rolls his hips, even though Jimin gasps underneath him, he can’t stop.
“F—fuck.” Jimin finds his gaze, looks a little dazed. “Fucking me with your knot?”
“Mmh.” He nods, only half there. “O—okay or, no?”
“Yeah.” Jimin nods, bites his plush lower lip to brace for impact.
He tries to be sweet, rolls his hips slowly, really makes Jimin feel the drag of his knot. Though it’s sensitive, Jimin is keeping it warm so good, clenching around him, keeping him inside.
And when Jimin looks at him through his lashes, his eyes are glazed-over, scent even thicker.
God, he’s pretty.
He’s not sure if it’s just the rut talking but he’s glad they accidentally mated; no one else is allowed to see Jimin like this, face flushed, black hair sweaty at the ends, sticking to his forehead and temples, body arching, legs spread, moving back on his knot, one hand wrapped around his pretty cock.
No one else can ever see the way Jimin throws his head back when he comes, or the sinful moan that slips from his plush lips, nor how his body shakes, white ropes of come covering his torso, like the most lewd painting Jeongguk has ever seen.
“Pretty.” He pants, kisses the inside of Jimin’s knee. “You look good on my knot.”
“Ngh fuck— yeah?” Jimin lolls his head, meets his gaze.
“Mmh.”
He nods, then leans down, captures those lips between his own.
Much like their first kiss, his sense of time and space fades to the back of his mind, he can only feel warm, soft lips, can only breathe in wildfire as they go up in flames.
After his first knot everything becomes just a little more blurry, but Jimin takes care of him well. All he gets is bits and pieces, Jimin’s lips on his body, his hands caressing down his back, that tight heat around him, sweet whispers in his ear like: I’ll keep your knot warm
But by far the best part is burying his face in Jimin’s neck and kissing him all over his scent gland, dragging the tip of his nose over it, licking over his mark, nipping at it just to remind Jimin he’s his.
Time blends together, and he’s not entirely sure how it happens but at some point he’s on his back, with Jimin’s fingers inside of him, curling and thrusting and driving him insane.
“Let me take care of you, hm?” Jimin kisses down his neck, sucks a mark right on his collarbone.
“Fuck.”
He’s never really tried this, during his rut. He always just takes and takes and takes, barely conscious for any of it. But surprisingly, his alpha submits quite easily, Jimin’s fingers feel amazing, the feeling of something deep inside of him just turns his brain to mush.
Jimin’s mouth travels down lower too, over his chest, down his stomach, to his cock that’s still hard, swell of his knot still there, cum and lube all over the place but Jimin wraps his lips around him nonetheless.
“Oh my god—“ He groans, fists a hand in Jimin’s hair and wishes he could watch but his vision goes blurry.
It’s only the menacing curl of those fingers and that heavenly, soft, wet mouth around his cock.
It doesn’t even take long for his orgasm, Jimin has probably only sucked it for a minute. But he can’t blame himself either, he’s been wanting that mouth around him for ages now, couldn’t get it last time.
And Jimin keeps sucking even when he’s soft and oversensitive. Only when Jeongguk starts spasming a little does he stop.
Those plush lips cover his own then, he can taste himself on it but it just turns him on, almost as much as another finger slipping in, and the wet sound it makes..
Oh fuck, he’s leaking slick.
Right that moment, Jimin slips his fingers out with a lewd ‘pop’, and brings them to his lips.
“Fuck Jeon, so wet for me, even during your rut.”
Jimin eyes his fingers in awe, the slick catches the light of the flames, glistens prettily before they disappear between those full lips.
Jeongguk makes a soft noise, it’s a bit embarrassing really, between a whimper and a whine, as he takes Jimin’s wrist and forces those fingers out, just to suck on them himself.
It’s mildly sweet, a mix of slick and Jimin’s saliva, enough to make his dick twitch again.
But something else courses through his body as well, his hole clenches around nothing, along with a nagging feeling, an emptiness he needs to fill.
Jimin is right on top of him, on his knees between his legs, hovering over him, leaning on one arm. And his cock is standing up straight against his stomach, all flushed, tip leaking.
He’s not sure the appropriate response is to salivate, but that’s kind of what happens.
He swallows, flicks his gaze back up.
Jimin looks a little stunned, but then the corner of his mouth tugs up a bit, and he tilts his head.
“Want my knot?”
Fucking hell.
He turns his head away, blinks rapidly a few times, cheeks glowing hot.
Jimin does not let him off the hook, leans in close, until his lips brush feathery light against his scent gland, sends a shiver down his spine.
“Think you can take it big boy? Wanna try?”
Oh—
He gasps.
Arousal licks down his spine instantly, the familiar words settle in the pit of his stomach.
“Yeah— fuck—“ He nods. “Wanna try.”
In fact he needs it or he’ll forget how to even function.
Jimin does not ask twice, he pushes the back of his thighs up instantly, his scent thick in the air as he aligns his cock with his rim, rubs the head right against it.
“Fuck, you’re slicking all over my cock.”
“Ngh—“ He throws his head back against the pillow, more heat rushing to his cheeks.
He can barely feel it, but by the sound it makes when Jimin pushes inside it must be true, it’s wet and obscene.
Jimin slips in like he belongs there, Jeongguk can’t detect any discomfort, in fact he’s already writhing on the mattress, short of breath and impatient.
His rut has him wired on lust, any type of lust, and so when Jimin is all the way inside, he just nods, ready for more.
“Can I?”
Jimin asks, as if it isn’t blatantly obvious. Though Jeongguk does get a little fuzzy just how careful Jimin is being.
“Yeah— please.”
The first thrust has his eyes rolling back, a guttural moan falling from his mouth. How has he never tried this before?
“Fuck.” Jimin breathes out, rolls his hips a few times experimentally, the drag of his cock so good Jeongguk sees stars. “Good?”
“A—ah fuck— yes.”
Through his blurry vision he manages to make out Jimin’s silhouette, stares at it until he becomes vivid, that confident smile on his lips, hands around the back of his thighs, torso shimmering with a little sweat as he rocks his hips forward harder.
It’s too much to stare and feel it at the same time, pleasure so overwhelming all he can do is moan and move back on Jimin’s cock until the entire room smells like slick and sweat. Until all he hears is a wet squelch, skin slapping against skin and the headboard banging against the wall.
“God— fuck.” Jimin groans. “Gonna knot you so hard the entire squad will know you’re mine.”
Jeongguk’s brain flatlines for a second, but then a loud moan rattles through his chest, and his entire body goes slack, lets Jimin use him as a ragdoll until the knot presses against his rim, stretching him open even more.
“That’s it.” Jimin pants. “Nice and slow, you can take it.”
If Jimin wasn’t an enigma he doesn’t think he’d be able to, the slick makes it easier somehow but it’s still overwhelming. He holds onto the sheets to deal with the sheer pressure, sucks in a sharp breath as it pushes past the ring of muscle.
“Nngh— fuck.” He nods, toes curling at the sensation, heart hammering against his chest. “Jimin—“
“Mmh, I’m here.” Jimin’s hand finds his own, fingers intertwine with his slowly. “Does it hurt?”
“No.” He squeezes Jimin’s hand, pleasure restless in his gut, cock twitching against his stomach. “Think I’m gonna come.”
“Let me help you.”
Jimin curls his other hand around his cock, and as he strokes him, he rocks his hips ever so slightly, fucks his knot into him even deeper.
“Aah—“
He moans, eyebrows knitting together as he bucks into Jimin’s hand, but even more so he clenches around his knot.
“Fuck— Jeongguk.”
His name slips from Jimin’s lips so good it sends him over the edge. He thrust into Jimin’s hand, comes so hard that drops land all the way on his chin.
“Nngh—“
He groans, tries to peer through his lashes, finds Jimin’s eyes on him like a predator, that pretty grin on his lips that just sets his heart on fire.
When he comes down from it, Jimin’s hot mouth is right on his neck, kissing his claim, licking over his teeth imprints, scenting him until he’s completely drunk on it.
And the rest of his rut passes almost in a blur.
Except for the last part where they’re both too exhausted to keep going, but still crawl as close as humanly possible, and find each other’s lips blindly.
————————
It’s daybreak when he wakes, Jimin in his arms, already awake, the most gentle gaze in those monolid eyes.
Soft fingers brush through his hair, slow and comforting.
He sort of thought that he’d be more upset now that his rut’s passed. That maybe he only accepted that Jimin was his mate because of all the extra pheromones at play.
But right now he feels even more at ease than during his rut. The wildfire that intrudes his senses warms him up from the inside, and all he wants is to simmer in it for an eternity longer.
“Good sleep?” Jimin asks softly.
“Mm.”
He nods, scans over Jimin’s features, how his eyes are puffy in the morning, his cheeks pink, black hair a mess, and his lips a little swollen.
And pretty.
He leans in close, can’t really help himself at this point, its gravitational pull is too great. All Jimin’s fault.
He tilts his head, slots their lips together.
“Mmh.”
God, they’re all his to kiss, Jimin is all his to have.
It’s sort of insane they accidentally mated, he doesn’t even think they talked all that much, but the few months without Jimin feel like hell compared to this.
Which is a sign in itself. He’s always been a very solitary creature, but he already can’t imagine waking up without Jimin in his arms like this. Without these soft, slow kisses in the morning.
It’s god knows how much later when they break apart.
Jimin gives him a playful smile, a glint in his eyes that makes his heart beat just a little faster.
“Now that we’re mated for life..” Jimin starts, brushes his hair back. “Let’s get to know each other a little better.”
Jeongguk chuckles softly, can’t believe this is what it’s come down to.
They don’t even have too much time before they have to get ready for their first mission, but there’s a burning question he just needs to ask.
“You can start by telling me how you even became squad leader after you got kicked out of camp.”
“I never got kicked out.” Jimin chuckles. “I applied for squad leader position before summer, but they never had an enigma on the position before, so they sent me to alpha camp to show my worth, the general at alpha camp was my supervisor.”
Jeongguk hums, nods slowly. The general who “kicked Jimin out” knew all along then.
“So I tried to secure the number one spot, especially in special missions.”
Jimin explains.
That’s why he could never win from Jimin, only when it came to sparring, but any type of strategy games he could never get him.
“I had already proven my worth the first month, secured my spot as a squad leader, I didn’t have to stay for longer but I chose to..”
Jimin trails off, small smile on his lips as he averts his gaze.
Jeongguk blinks a few times, but then heat rushes up to his cheeks.
“So.. yeah.” Jimin looks up. “General just told me my assessment was already done and my application was accepted so I shouldn’t be messing around with alphas. The other officials who didn’t know were very squeamish though, enigmas aren’t exactly well-liked, so they made me leave abruptly.”
“Ah..” Jeongguk nods. “So that’s why you never said bye.”
It sort of slips out, but Jimin smiles upon hearing it, soft chuckle falling from his lips.
“Were you waiting for me?”
Shame rushes up to his face as he pictures how he clung to his sheets that night searching for remnants of wildfire.
“No— just. No.” He lies.
Jimin only gives a soft uhuh with that knowing look in his eyes
“Sorry for leaving you right after we mated.”
“That’s okay.” Jeongguk nudges his nose with his own, pecks his lips once. “We can make up for it, maybe go on a date after our first mission.”
Not that they’d have much time, plus most missions are pretty life threatening.. maybe they should make the missions their dates instead.
“Mmh.” Jimin smirks against his lips. “Don’t think the squad leader can be dating one of his subordinates.”
Oh.
Jeongguk pokes his tongue in his cheek, but a challenge sparks in his body too.
“That’s unfortunate.” He rolls on top of Jimin, hooks one of his legs over his shoulder swiftly. “Kind of want to knot him again.”
He only gets a wicked grin in return, and that’s all he needs to close the distance once more.
And if they show up a little late to their first day on the job, smelling like each other, no one really bats an eye.