Work Text:
Some people are into size differences.
Then, some people are into size differences.
Wooyoung is part of the latter squad.
His obsession started the same way it has persisted throughout the years. The staying power of Wooyoung’s one true love is none other than his partner Song Mingi.
So, when Wooyoung says partner, he doesn’t mean til death do us part. He means a partner in the field. Although Mingi and Wooyoung met when they were youngsters, they drifted apart at one point for college, early work assignments, and life. But somehow, by the fates, they ended up back together in the supernatural division of the police department in the town they grew up in, as partners.
You see, Wooyoung is a little different.
Mingi is too.
They both have their abilities, making them incredible assets to the Supe Division.
It’s a far cry from the treatment they endured as kids growing up amongst normies. There wasn’t a day where kids weren’t throwing dog treats at Mingi or squeezing ketchup packets all over Wooyoung in the halls.
It definitely hurt at the time. It’s actually how Wooyoung met Mingi. Some kid thought it would be funny to dump a can of wet dog food all over Mingi in the cafeteria as a joke.
Very funny. Haha. Everyone laughs.
Wooyoung chased Mingi through the halls until they ended up in a bathroom together. Even though Mingi was trying not to cry, Wooyoung approached him slowly and told him he should cry. There was no reason why Mingi didn’t deserve to feel his feelings, just because he was trained by his family and society that he was supposed to act a certain way.
This was something Wooyoung had always admired about Mingi. He took Wooyoung’s words to heart that day and always let his feelings show when he felt them. There was something about a massive guy with way too many tattoos crying big, fat tears on the bus because he couldn’t manage to finish his essay the night before.
The dumbest thing about all the terror was that everyone assumed Mingi was a werewolf just because he had shifter bands tattooed on his arms and neck. What was this…the 30s? There were way more creatures in the world than werewolves and vampires nowadays.
Take Wooyoung, for example. Everyone thought he was a vampire because he only drank a blood shake at lunch during his school years. That didn’t mean he was a vampire. Not that there was anything wrong with vampires, but it was a little close-minded of people to assume that he was just some basic-ass vampire when he personally thought he was much cooler than those old, creepy goons.
He was a Nightbringer. Sure, he had a little vampire blood, but that was such a small piece of the puzzle. He was the son of a necromancer and a half-vampire. The other half of said vampire was some kind of fae. Don’t even ask Wooyoung how all these freaks ended up breeding together. He knew folks of the night were frisky, but he couldn’t imagine some of the shenanigans they got up to.
Like how does he have a friend who is half kelpie and half orc?
Does that mean that an orc got so riled up by a pretty horse in a river that she jumped in, risked death, and rode that thing close to morning, only to come out of it alive with a baby in her womb?
The things we do for love , Wooyoung supposes.
He really adores Mingi—he always has. His friend's quiet, calm nature completely disproves most accusations that shifters are a wild, uncivilized bunch. Think more like Beast from X-Men as opposed to Sabretooth.
You’d be more likely to find him sitting up in the bows of a tree reading a book on physics than out at the club trying to bury his knot.
The reason why Wooyoung is contemplating the nature of his size difference kink today is because Mingi and him have been going steady for a while now. It’s probably frowned upon for two partners on the force to fuck on the regular, but honestly, what did they expect? Put two hot, virile supes together in a small cop car every night to scope out boring ass criminals? They’re going to find a way to pass the time.
Wooyoung wants to get to the next level with Mingi. He’s never cared for someone, or wanted to fuck the living hell out of someone, as much as his partner. And credit where credit is due, Mingi has gone about as far as his conscience has allowed him to go with Wooyoung from a sexual standpoint.
Unfortunately for Wooyoung and the crooked cops who employ them, Mingi has morals. So, at this time, he refuses to go further than hands-and-mouth stuff with Wooyoung. Which, don’t get him wrong, hands-and-mouth stuff with Mingi is probably about 998% better than going all the way with all humans and most supes, but Wooyoung is nothing if not thorough.
He’d like to check off every box on his ‘loving Mingi’ bingo card.
“Having sex doesn’t equate to showing love,” Mingi had told him the whole way back in high school. It was one of those moments that made Wooyoung fall for him from a romantic standpoint. It was after Wooyoung’s semi-serious boyfriend had broken up with him for not giving him a handjob at a public sporting event. Like, even Wooyoung has his limits. He’d really rather not have cum all over his fingers while he’s trying to eat nachos while cheering on the home team.
Wooyoung loves Mingi—he really does. But this is one area where Wooyoung cannot agree. It may be true from some people’s perspectives, like humans, who have a lot more choices when it comes to sex.
Unfortunately, the fae blood in Wooyoung makes sex a little bit more than a fun afterthought in a relationship. Much like blood, Wooyoung needs psychic and sexual energy to feel completely fulfilled in his mortal form. It’s tricky. He has family members that are asexual through and through, but they still need a little dick from time to time to take the edge off.
Wooyoung doesn’t just want a little dick. He wants all of Mingi’s dick. And not just in his mouth or hand.
He wants all of Mingi.
And if Mingi is willing…Wooyoung wants even more of Mingi than he’s ever really willing to give.
It’s all Wooyoung has been able to think about since one fateful afternoon when they were riding the train home after school together. There was some leering creep giving Wooyoung a hard time, so Mingi stepped between them and directed a furious glare toward the weak human. That was enough to get Wooyoung’s juices pumping, but his entire life changed when Mingi turned around and huddled over Wooyoung like a living tent to protect him from any other creeps looking at him.
Yeah, some people have a thing for size differences, but some people have never had a man as big as Mingi crowding over and around them so much that they feel like a speck of dust being dwarfed by an exoplanet.
The cherry on top was the unfamiliar but overwhelming scent of Mingi as he wrapped Wooyoung up in the shadow of his form. Dark and musky, Mingi was sending off some kinda signal. The kinda signal that lets humans and supes alike know that Wooyoung is off-limits.
Wooyoung is pretty sure that he has never jerked off as much as he did that night when he got home with the scent of Mingi strong in his memory and the phantom feeling of his hot body shielding him from harm.
—
“We’ve discussed this, Wooyoung. I know how you feel, but I just can’t risk it. You’re too…I’m just—”
It’s a well-traveled path of dialogue by this point, but Wooyoung presses forward all the same.
“—too big, I know. I know. But how do you know if we don’t try? You know I’m not just some fragile human, right? I can take much more than your average guy on the street.”
Mingi’s face softens. He looks torn. On the one hand, the love of his life is begging to be split in half on his dick, but on the other hand, there’s a good chance that Mingi might actually split the love of his life in half—no hyperbole intended.
“You haven’t…truly seen what I become, Wooyoung. I’ve been holding back as much as possible.”
That’s true, too. And Wooyoung knows it can’t feel great to only get a quarter of the way to your full potential during sex out of fear that you’ll dislocate your partner’s jaw while he’s blowing you.
“I understand,” Wooyoung looks solemn. The craziest part of this serious conversation is the fact that Wooyoung has his dick between Mingi’s thighs at the moment. They’re talking about the dangers of shifter on non-shifter sex, and Wooyoung is still thrusting away at the lube-slick mess between Mingi’s thighs. He’s an excellent multitasker. He really must add that to his resume if he ever decides to leave the force. “But don’t you think I should be the judge of what I can handle? If it goes sideways, we can always bail out.”
Again, Mingi looks back at Wooyoung, fear plain in his eyes. “That’s the thing, Wooyoung. I don’t think you understand. There’s a very good chance that I won’t be able to bail out if I get too into it. It’s not like I want to hurt you. You mean the world to me. It’s just—”
“—instincts,” Wooyoung cuts him off with a few drops of annoyance muddying his tone. “I hear you. But don’t forget…you’re not the only one battling their instincts. I’ve got just as much beast blood in me.”
He speeds up his thrusts, eyes rolling back at the feeling of heat and tightness between Mingi’s legs. “I’ve got my own instincts,” he continues slowly, voice low and dark. “And my instincts are telling me that I need you inside of me just about yesterday, so why don’t we give it a go and see what fucking happens.”
Without warning, he reaches his peak. Cum spurts between Mingi’s pink thighs, filthying the sheets beneath them. Wooyoung knows he’s being a bitch, but instead of helping Mingi clean up, he rolls out of bed and heads for the shower.
If Mingi doesn’t want to take this thing to the next level, then maybe Wooyoung should treat this relationship the way it really is. A stepping stone on the way to Mingi finding the right shifter to knot and claim.
—
By the next full moon, Wooyoung is downright angry. All the parts of who he is are screaming and shouting inside of him, begging for the relief they damn well need at this point. He tries to ignore his brain and body, but it’s not easy.
Instincts, instincts, instincts.
He slams the door of his house before wandering off into the forest to blow off some steam.
His workout routine consists of running laps and using the redwoods on his acreage like workout machines. Pull-ups, deadlifts, whatever the hell he’s doing with his legs in the air right now. He does it all.
There’s sweat dripping from his body, brought on by the raw energy pulsing through him due to the full moon rising high in the sky and his own ancestors chanting at him to take and take and take.
Like some kind of fucking monster.
He has his morals. He’d never hurt someone. He thought he could maintain a relationship with Mingi without either of them getting hurt, despite their very different upbringings.
But now, every time they make out, all Wooyoung can see is the black tattooed shifter bands flexing on Mingi’s arms and neck. All he can think about is the spot on Mingi’s throat that is practically outlined in red begging for shifter teeth to dig into it when they’re mated.
Wooyoung is nothing but a pair of lips to kiss and a heart to break when the time comes.
He’s halfway to a full emotional breakdown when the loud sound of a stick snapping nearby draws his attention. His eyes are wide and shining in the dark, taking in his surroundings by sight, sound, and scent all at once. The weight of the forest presses in on him, all the living things falling silent despite the early hour of the night.
It’s too quiet.
The hairs on Wooyoung’s neck stand up straight.
He’s in danger.
Inhaling to stop the sound of his breathing, Wooyoung sidles a tree to look for the best way back to his house, just a few yards away. It’s not a long run, but the sound of his footfalls would surely alert the predator. His heart thumps in his chest with each second that passes. Each second is a second won by the monster. Each second is a second of Wooyoung’s life being cut short.
He crouches low to the ground and starts his slow crawl through the roughage on his way to the beacon just past the treeline, his little stone house lit only by candles.
The traversal is mind-numbing and horrifying, but he’s getting there slowly, inch by inch.
He’s almost at the last row of trees when something strong and fast grabs him by the scruff of his neck and pulls him backward into the forest. They move swiftly. Too swiftly. Wooyoung feels nauseous from the sight of his home getting smaller and smaller and the trees getting thicker and thicker. The moon is almost entirely gone from view behind the canopy of trees above him.
The thing wraps its arms around Wooyoung’s middle, snug and secure. Something warm and soft nuzzles against his throat as he’s transported. A calming scent wraps around him, telling him to chill the fuck out.
He relaxes against the big body behind him and sighs dreamily when the thing behind him pulls him even closer before they disappear into complete darkness.
—
No words are spoken. There have been enough conversations before this point, so Wooyoung can honestly say he’s happy when his lips are captured in a rough kiss the moment they’re both hidden from prying eyes.
The darkness of the cave would make it impossible for a normal human to see past a hand in front of their face, but Wooyoung is not a human. He’s a Nightbringer, and God is he so happy for that in this moment.
Mingi is massive. Bigger than usual due to the moon rising high in the sky. He’s not fully shifted, probably due to the shade of the cave, but his body feels the pull all the same. The clothes on his body are torn and filthy, and his cheeks and arms are lined with even more dark bands.
My Tiger.
A low chuff works its way out of Mingi’s lungs. The sound of a tiger happy to be with the one it loves. His tongue is rougher than usual on its way into Wooyoung’s slavering maw. It tastes of Earth and fresh kills, and Wooyoung keeps sucking and sucking until there’s nothing but his own taste when he licks into Mingi’s hot mouth.
This is the Mingi he has wanted for so long. This is the creature on the train with golden eyes and sharp claws meant for protection.
Wooyoung has no need for protection with his own abilities, but that doesn’t mean that he doesn’t get absolutely stiff at the thought of Mingi hovering over him protectively.
He’s pushed to the ground, to his hands and knees like a bitch, by the beast he loves.
The love is still there in his motions, despite the raw animalistic nature of his approach.
Wooyoung’s clothes are torn from him quickly. He doesn’t mourn their loss. They’re just clothes. He’d lose a thousand pairs of running shorts if it meant the reward for their loss was Mingi’s hot fingers prying his ass open for inspection.
Hot breath wanders from Wooyoung’s ass, up his spine, to the side of his throat. The side that is meant for claiming in Mingi’s pack. His body feels like it’s being lifted by a higher power, his spine arching grotesquely to get Mingi’s teeth closer and closer to the sweat-slick skin of his throat.
Mingi doesn’t give in, though. It’s not time for that yet. He wraps a huge hand around the back of Wooyoung’s neck to shove his face into the dirt floor of the cave. The action forces Wooyoung’s body to collapse, but Mingi keeps his ass up with a big arm wrapped around his slim waist.
That hot breath is back with a vengeance, teasingly ghosting over Wooyoung’s hole. Just air. Just hot air. It’s enough to have Wooyoung leaking all over the filthy floor beneath him, and it’s just hot air.
He squirms pathetically. Mingi growls low in his throat before digging two clawed hands into the tender flesh of Wooyoung’s hips to keep him frozen in place.
“Stay, ” the voice that addresses Wooyoung is definitely Mingi, but it’s rough and dizzyingly low. He lets out a pathetic moan in response. “I warned you.”
The sound of Mingi spitting right into Wooyoung’s ass tears a hole into the fabric of Wooyoung’s reality. It’s like nothing he’s ever experienced under Mingi’s slow and steady palms. He spits again, with more force this time.
Then without warning, the thick head of his cock is rubbing into the mess of spit lining Wooyoung’s clenching hole.
He’s not gonna lie. He fucked himself a little bit to take the edge off tonight. But that was his gentle six-inch buddy from his nightstand. Six inches. Still pretty substantial for most people.
Mingi’s packing something unholy in his partially shifted form. Not that Wooyoung is complaining. He was warned. He did ask for it.
He still wants it, but that doesn’t stop his stomach from flipping when Mingi pushes forward, inch by inch.
There is a bit of a caveat. Shifters produce a slick during mating season that works like a lube/anesthetic/popper cocktail on their mate’s opening and insides. Surely, the mate is used to the sensation, but Wooyoung isn’t a shifter.
The second the wet chemical spreads through him is like nothing he’s ever experienced before. It’s opening him up and soothing the smooth passage for Mingi’s rough and bumpy length to fuck into him. He feels high on the sensation, eyes rolling and tongue falling out of his mouth. With each inch gained, Mingi’s nails lengthen to dig further into the plush padding of Wooyoung’s hips.
It only serves to heighten the sensations pouring into Wooyoung by the boatload. He’s not sure if he’ll ever be able to go back after this. The sharp nails, the massive heat of Mingi forcing its way into him, the disgusting snarl mixing into Mingi’s attempts at soothing his mate.
Before Mingi is even halfway in, Wooyoung’s cock is already pouring cum all over the dirty floor beneath him. He tries to catch his breath after it, but Mingi isn’t letting up. If anything, Wooyoung has a feeling the display of weakness is getting Mingi even more worked up. The tiger’s palms slide from Wooyoung’s hips to wrap around the middle of his waist, his fingers spreading to dance over a few of Wooyoung’s tender ribs.
He squeezes hard, long nails tearing into the flesh and putting a different kind of pressure on Wooyoung’s insides.
And finally, after an agonizingly slow push forward, he’s fully seated in the tight heat of Wooyoung’s guts. For just a moment, the hands tight on Wooyoung’s ribs loosen the slightest bit. For just a moment, Mingi’s voice softens to the voice he knows and loves, “Last chance. I can—I can try to stop if you—if you need—”
“Oh, just fuck me already. We’ve already made it this far— ahh—”
Before Wooyoung is done speaking, Mingi is pulling out of him almost entirely before fucking right back in with a little too much force. Not another word is spoken between them. Something about Wooyoung’s trademark snark seems to have lit a short fuse in Mingi that took under a second to reach combustion. Sharp claws dig into Wooyoung while Mingi fucks him like a latex doll.
He flails helplessly under the full weight and height of the shifter, moaning and whining but not yet overwhelmed. His blood seems to shelter him from the fall that most folks feel when they’re taken by a beast. If anything, his blood seems to be singing, alive for the first time since he came of age. His eyes shine, the light reflecting off the dark walls of the cave, magenta and glittering. A song is pouring out of Wooyoung that is both unearthly and beautiful. The Nightbringer is shifting the tides and darkening the skies outside of their hideaway, but neither of them care enough to stop it.
At some point, Mingi pulls Wooyoung up so his back is glued to Mingi’s slick chest. In this position, Mingi’s cock is practically abusing Wooyoung’s most tender spots with every wet pump of his hips. The slickness of it all is mind-melting to Wooyoung. He feels like he’s been oiled up and thrown down a waterslide. His mind is just barely present while Mingi fucks into him, just as mindless and running on the moon’s glow and instincts.
All shifters have their own form of a knot to lock their mate in place. Wooyoung learns quickly that Mingi is no different in this regard. But unlike the other beasts Wooyoung has seen on the internet, his shifter’s cock is sprouting dulled barbs that are designed specifically to hold Wooyoung in place for the finale.
Wooyoung isn’t sure if he would’ve agreed to this if he knew about the barbs beforehand, but he’s sure now that it’s not something he has any reason to be afraid of. His body heals quickly, and it always welcomes a touch of pain with pleasure. The more Mingi grinds into him, heaving chest glued to Wooyoung’s spine, the deeper those barbs dig to prepare Wooyoung for breeding.
It’s no surprise when Mingi tenses behind him, voice bubbling up into a volcanic roar that almost serves to deafen Wooyoung in the enclosed space. He can feel Mingi’s claws all over him. The spined portions of Mingi’s length seem to move with each thick pulse of cum that spurts out of him, massaging Wooyoung’s insides to stimulate his desire to be bred full.
All of these things pale in comparison to the wide mouth of teeth buried into the flesh of Wooyoung’s throat. It’s the spot. The exact spot. The part of Wooyoung that means mate to Mingi. His teeth keep grinding down hard into the spot while his cock does the same inside of Wooyoung’s body.
Wooyoung, soaked in his own cum and a whole bunch of dirt from being facedown on the floor, finds himself completely speared on every part of Mingi. At the pinnacle of it, Wooyoung’s entire mind flashes magenta and gold. Spiraling works of art painting pictures in his mind and the walls of the cave surrounding them.
He’s not sure how long Mingi goes on finishing off inside of him, but he can certainly feel it when the shifter softens and starts to pull out. Dazed and aching, Wooyoung is amazed by the amount of release that pours out of him with the extraction of Mingi’s length. It had been working like a plug in Wooyoung’s upright frame, but the moment it was removed, the floor was soaked with Mingi’s leavings, through and through.
This isn’t where it ends. Before the moon has fallen back behind the trees and out of sight, Wooyoung is taken at least seven more times. Bouncing on it, grinding back onto it, seemingly taking it up to his throat in some cases.
He almost feels bad that he can’t make the baby Mingi’s monster is so deadset on giving him.
But the whole way through, he doesn’t feel a lick of regret. If anything, for the first time in ages, he feels completely full.
As a guy who’s into size differences, he’s gotta say that he’s lucky to have a tiger like Mingi on his side to keep him feeling whole.