A/N: This is the third part in my Demon!Soulmates AU that started with 'Love, Blood, and Demon Nature' and continued with 'Giving in to Demon Nature'. Warning for sex, blood, scratching and biting, but nothing gory, I promise.
"So where would you like this to happen?" Sebastian asks, opening up his wings and shaking them out against the wind. "Where do you imagine your first time? I'll take you anywhere – Paris, Rome, a field of lilacs or a snowy mountaintop. Just pick the place, and we'll be there in seconds."
"How about you just take me home," Kurt suggests, raising a hand and running it down Sebastian's cheek, smiling when Sebastian turns to place a scorching kiss to his palm. "Our home. And we can start there."
Kurt doesn't have to say it twice.
He closes his eyes when he feels his naked body lifted into the air, the rush of the wind pushing against him, and that sensation of rising and falling that makes his stomach lurch and his heart stutter. True to Sebastian's word, it takes only a second to get to Kurt's penthouse in Manhattan. How a city full of people can miss a nearly seven foot winged demon flying through the air at break neck speed astounds Kurt, but then again, New York is a city full of people always staring straight ahead or at the ground. Even if a bystander saw Sebastian in his true form, he dives through the air for less than a split second and is as black as the night sky – a sky that is infinitely darker when Kurt considers the amount of people milling about who probably haven't gotten color back yet. The ones who still only see in shades of black and white wouldn't notice Sebastian at all.
Sebastian alights onto Kurt's balcony without a sound. Sebastian pulls the glass doors open and carries Kurt inside. Kurt keeps his arms looped around Sebastian's neck, holding him tight, not sure where he's supposed to begin. Sebastian lays Kurt out on his sofa and takes a step away. Kurt looks at Sebastian as he straightens – an Old World demon in Kurt's stylish and modern living room, gazing around uneasily, strangely less confident, and in many ways, adorably uncomfortable.
Kurt laughs. He can't help it. Sebastian may be dangerous and ferocious - with hard, scaly skin and razor sharp teeth - but here on the Upper East Side he is completely out of his depth. Sebastian's eyes snap down to look at Kurt's face. They glow brighter but Sebastian doesn't move, doesn't say a word, and Kurt registers that he's done the unthinkable.
He's hurt Sebastian's feelings.
"I'm just going to go take a quick shower," Kurt says, struggling to stand up and balance on legs that are more than happy to remain limp and useless. "Why don't you try to make yourself at home…unless you would like to shower, too?"
The fire in Sebastian's eyes flickers and dies down as he ponders Kurt's offer.
"I have no need for primitive things like showers," he says, using his savage bravado to hide his bruised ego.
Kurt smiles and nods, seeing straight through his ruse.
"I'll only be a minute," Kurt promises.
Kurt heads to his bathroom, marveling at the wondrous colors all around. He is so happy that he has an eye for design that transcends color blindness. He remembers talking to his best friend Rachel when she found her soulmate and all of the color came back to her life. She returned home with her soulmate Finn to find that very little in her apartment matched color-wise. She said she thought she had chosen complimentary color schemes (as indicated by a program on her computer that she used to help her decorate instead of consulting Kurt – a point of contention in their relationship for many years after), but the overall effect was garish and vomit-worthy. She and Finn had to rent a room at a nearby hotel for the night and deal with the apartment the next day. He remembers hearing her tell the story through a veil of melancholy, at a time when he was longing for his own soulmate, but now that Kurt has him – now that Sebastian is there with him – he can better appreciate the humor of her tale.
Kurt keeps his shower remarkably short (12 minutes from start to finish - definitely a Kurt Hummel record) though he does take a little longer than necessary examining the pearlescent quality of his tile and the flecks of gold in his designer hand soaps.
He returns to the living room wrapped in only a towel – the less of his designer clothes that he has to sacrifice to the altar of his soulmate, the better – but Sebastian isn't there. Kurt walks to the balcony and peeks up at the sky, wondering if Sebastian was so offended that he took off again. Kurt frowns. If Sebastian did leave, he wouldn't just be circling the sky. He'd be long gone.
Kurt hears a clatter in his bedroom, followed by the sound of swearing and what Kurt can only imagine is the distress of oversized hands trying to manhandle tiny ceramic statues…and failing. Kurt crosses through the penthouse and up the stairs to his bedroom. He feels much stronger in his own home, with Sebastian there, and all the good things in his life coming together.
He walks through the open door and there Sebastian stands, hunched over at a bedside table that barely reaches his shins, trying to piece together a shattered statue, cursing in some lost Babylonian dialect every time it comes apart again.
"Don't worry about it," Kurt says. "It's an imitation anyway."
Sebastian's back scales bristle knowing he's been caught. Kurt smiles, watching Sebastian struggle with the delicate figurine.
Sebastian balances the fragment he's holding, catching his breath as he slowly backs away.
Sebastian stands to his full height and sighs in relief.
The statue falls apart again, the splintered pieces raining down on the wood table top with a light tinkling sound.
Sebastian hides his face behind fists full of claws.
"Son of a motherless…"
"Okay," Kurt says, grabbing hold of Sebastian's elbow and turning the demon to face him, "why don't we focus our attention to something else?"
Sebastian drops his hands and looks at Kurt, grinning from ear to ear.
"Eager, aren't you?" He slips his arms around Kurt's narrow body, sharpened scales leaving marks in their wake – the marks Kurt had been hoping for.
"Is that a bad thing?" Kurt asks, fighting the urge to look down and see how those scales were imprinting onto his flesh, giving his body a vague impression of Sebastian's own skin – making the two soulmates look like a matched set.
"No," Sebastian says, eying Kurt's neck, his shoulders, his chest, all the places he wants to lick and bite, "not at all. I just wasn't sure you would be."
Kurt swallows as Sebastian silences himself by latching onto Kurt's neck, right below Kurt's pulse, and layering the spot with kisses – hot, stinging presses of his lips and swipes of his tongue in circles, lapping up the sweet taste of human flesh that belongs to him - flesh he can savor whenever he wants because it's his and only his.
There are no foreign touches on Kurt's skin. Being a human and possessing no magic, Sebastian would be able to tell if Kurt had ever been intimate with another man. Sebastian would be able to see the handprints on Kurt's skin, like heinous scars marking up his pure white flesh. There's only one – a barely-there mark on Kurt's hand, left by a touch that Sebastian can tell was unwanted. Some night, when they are lying together in bed and Kurt is sated and asleep, Sebastian will examine the print, isolate its owner, and eliminate him.
Kurt might object, but as his soulmate he will understand that Sebastian can't help it.
Vengeance is in Sebastian's nature.
Kurt trembles when Sebastian's wings wrap around him, the two he uses for flight dividing and revealing his truer seraph nature – six equally sized wings, thick and leathery, prehensile, holding Kurt's body and freeing Sebastian's hands. Sebastian continues to torture that spot on Kurt's neck that has him reeling, his eyes rolling to the back of his head, while Sebastian's hands work their way down Kurt's body and undo the knot in his towel.
"You wanted me to mark you," Sebastian hisses when Kurt moans. "I can't wait to see the look on your face when you see what I've done."
It sounds like a challenge, but it's endearing, and the promise of it makes Kurt hard in an instant.
"D-do more," Kurt whimpers. "Make another one."
Sebastian finds another spot and attacks it, holding Kurt tighter, moving him slowly, laying him out on the bed behind them. Kurt relaxes beneath the devastating attentions of Sebastian's tongue, but even as he concentrates on the circular mark being burned into his skin, anxiety kicks in. Kurt has thought of this moment so many times that he's confident he knows all the ins and outs of Sebastian's body – all the things he'll need to do to make Sebastian come unraveled in his inexperienced hands – but beneath the powerful body of the seraph, Kurt feels like a foolish human, a foolish boy, his confidence fading.
How does a 25-year-old man compete with the experience of a demon who has walked the earth since its inception?
What can Kurt even do to make him happy?
A voice in his head tells him he has to do nothing. He just has to be.
And as much as that makes sense, it's hard for him to believe.
"What do you want me to do for you?" Sebastian whispers. It's the first time Kurt has heard this sound – soft and silky, with the hiss of a snake but deliberately spoken, his tongue curling around the words, and with every flick tattooing them to Kurt's skin.
"I…" Kurt's eyes shift to the wings surrounding his body, and the scales flush against his skin, leaving their prints – their proof of possession, "I don't actually know."
Sebastian rolls his head on his neck, sighing exaggeratedly.
"Yes you do," he says. "I know you do. I've seen your dreams."
Kurt's jaw drops. His dreams are his. They're private. They are the only arsenal Kurt has to prove himself to his soulmate. Kurt is almost embarrassed that Sebastian has seen them.
"Then you tell me what I want," Kurt snaps.
"You want me to kiss you," Sebastian says in the same seductive whisper, ignoring Kurt's tantrum.
Kurt swallows hard.
"Yes," he replies. "M-more than anything."
Kurt's voice fails as he watches Sebastian lick his lips, his long reptilian tongue sizzling across his skin.
"I'll give you anything you want," Sebastian says, his urge to have Kurt growing along with the hunger in Kurt's eyes. "All you have to do is ask for it."
Kurt can't help but smirk at the thought.
"Anything I ask for, you'll give me?"
"Of course. I serve you now, you must know that." Sebastian raises a hand and presses it over Kurt's heart. "You must feel it."
"Maybe I'll feel it more with you inside me," Kurt says, trying for more daring.
Sebastian sucks in a breath through pointed teeth.
"We'll get to that," he says, his voice a breathy moan. "But how about we start with that kiss?"
Kurt nods.
"Sebastian," he says, finding a voice inside him that sounds braver than he feels, "kiss me."
"Whatever you want." Sebastian's eyes glow brighter when they flick down Kurt's face and stop on his lips.
Sebastian doesn't close his eyes when he kisses Kurt for the first time, and not because it isn't an amazing kiss, but because he needs to see Kurt – he needs to know that Kurt wants him. Kurt is gorgeous by human standards. Demons don't measure beauty the way humans do, and having never been human, he didn't have that experience to tap into for a long time. Sebastian stalked Kurt extensively before he made his move to claim him, and during that time he inhabited many human bodies to see Kurt in that shallow way humans do.
He understands now how the lesser creatures perceive Kurt's beauty, and that's as far as his comprehension goes. He has felt their reactions – men and women alike – when the lay eyes on his soulmate. Reactions so strong it almost filled Sebastian with an incurable rage, but for the use of their bodies, Sebastian spared the lives of those who had thoughts of wanting his soulmate for their own.
By demon standards, Kurt is less vulgar to look upon than other humans.
But Sebastian doesn't judge Kurt by demon standards, or by human standards. He sees Kurt through the eyes of love, as corny and repellant as that concept is for Sebastian, and in that way Kurt is glorious. He is the pure sunlight and the sacred darkness. He is the beginning and the end. He is food and air and water. Sebastian has waited every second of his dreary existence for Kurt to appear, and the day Kurt dies, Sebastian will follow him.
On the other end of the spectrum, Sebastian understands how humans perceive demons. He doesn't reveal himself too often, but he's watched human movies, read human literature. He knows why humans fear and revile his kind, and justifiably so.
So in the same way Kurt worries about Sebastian's demon nature overpowering his newly developed and unprecedented love for him, Sebastian doesn't see how Kurt can accept this soulmate bond without recoiling in horror every time Sebastian touches him.
It's not in Sebastian's nature to feel self-conscious or weak, but one single rejection from Kurt could bring Sebastian to his knees, which is why this reassurance is necessary.
But there Kurt is – blessed, amazing Kurt – melting inside the cocoon of Sebastian's wings, chasing Sebastian's lips with his own, moaning with every sweep of Sebastian's tongue inside his mouth, chanting Sebastian's name when the demon moves down his chin to plant kisses on the column of his neck.
"More," Kurt begs, his voice blissfully broken, moving his head, straining to uncover more places he needs to be kissed, "please, Sebastian…I…I need you…"
"You need me," Sebastian repeats, ending his kisses at Kurt's collarbone and using his tongue to carve a special mark, one that will last, one that will visibly and inarguably stake his claim. Kurt cries out as the wound cuts deep, but Sebastian doesn't stop. He feels Kurt's body react. He feels him grow hard beneath him.
This is the way it's supposed to be.
"Yes," Kurt whines, raising a shaking hand to feel the mark on his skin – a half-moon slice with a six-pointed star dangling off the curved edge. "Yes, I need you. Can't you feel it?" Kurt moves his hips up to meet Sebastian's body. "Can't you feel how much I need you?"
"Yes," Sebastian admits, "but not so much here…" Sebastian reaches a hand between Kurt's legs and touches Kurt's cock, stroking him carefully, reveling in the trust this man has given him. Sebastian's nails are long, and sharper than any dagger. They rest against Kurt's leg, brushing the thin membrane of skin above his femoral artery. Kurt simply lets his eyes flutter shut as he gives his body over to Sebastian's care. "I feel it here…" Sebastian continues, resting his free hand over Kurt's heart."
"H-how do you feel it?" Kurt asks innocently, arching his body into Sebastian's touch.
"Your heart speaks to me," Sebastian says with a subtle hiss. "Your whole body speaks to me, and I listen to everything it says."
Sebastian's lips move down Kurt's chest, and Kurt shivers.
"I-is it telling you to make love to me now?" Kurt whimpers desperately. "Because that's what I hear…"
Sebastian chuckles darkly, letting his tongue wrap around Kurt's hip, leaving a whip-like mark over the impression of scales there.
"Yes, I hear that, too." Sebastian moves lower, eager to see every inch of his soul mate, all the places Kurt hides from the world that are open to him.
"So…" Kurt stutters, making an almost inhuman sound when Sebastian forces Kurt's legs open wider and licks a long, teasing stripe up the inside of one leg that curls around his cock and travels down the other leg, "why are you…"
"Do you want it to be over so quickly?" Sebastian lets his tongue wander farther up between Kurt's legs, circling the sensitive area behind his balls.
"I…"
"I could keep you here like this for decades," Sebastian says between licks. "Eons…time has no meaning for me."
"It might have some meaning for me," Kurt argues, but Sebastian strokes faster and renders Kurt silent.
"Not as long as you stay with me." Sebastian doesn't elaborate, but Kurt doesn't ask him to.
Sebastian feels Kurt's body tighten below him and he knows Kurt is close. A few more strokes and Sebastian will watch his soul mate cum for him.
Kurt takes a deep breath in, teetering along the edge of needing to cum, and needing his soulmate.
"Sebastian," Kurt moans, rolling his head from side to side, "you said you'd do whatever I asked…"
Sebastian stops the movement of his hand, feeling Kurt exhale with relief.
"I did," Sebastian admits. He spreads his wings around him, moving up Kurt's body with a single flap.
Kurt looks into the demons eyes as he waits for Kurt to ask.
Kurt reaches out a hand to find Sebastian's. Kurt's hand is soft and exceptionally fragile in comparison to Sebastian's, but when Kurt laces their fingers together, they seem to fit in an abstract way.
Like they were meant to hold each other. Like the spaces between Sebastian's fingers are only big enough for Kurt's fingers to weave through.
"Make love to me, Sebastian," Kurt asks sweetly, keeping his eyes locked on Sebastian's glowing red stare. "Please."
Kurt sees the cloud of some faraway indecision pass over Sebastian's eyes, but it's gone in an instant.
"As you wish, my love," Sebastian says. Sebastian's words are soothing and lyrical, even with the serpent's tongue enunciating them.
"Have you…" Kurt almost doesn't want to ask. It seems sacrilege to assume either way, but he has to know. Sebastian's eyes search his, and they know what Kurt is asking.
"Not in the way that you think," he explains, swallowing hard and looking ashamed. "I have entered people's souls during the act, experienced it with their bodies, through their minds…"
Kurt nods in response. It's not ideal, and on a level he doesn't like it, but Sebastian is who he is – a demon. And in the spirit of pain and torment…well, Kurt imagines there is little that Sebastian hasn't done. The concept comes with a torrent of blurred lines, and Kurt sighs deeply.
Sebastian isn't blind to his soulmate's pain.
"But I have never made love to anyone," he clarifies. "I have never allowed myself to have that experience for my own…in this body…" Sebastian leans low over Kurt, pressing his body against his soulmate. "So you will be my first," Sebastian whispers, "and you will be my only, until the end of time immortal."
Sebastian's lips on Kurt's mouth are gentle, soft, moving with the echo of unspoken words that feel like 'I love you' against Kurt's skin. Kurt feels the bed move as Sebastian's wings curve over their bodies and plant themselves onto the mattress, keeping Sebastian's body slightly elevated. Kurt can feel Sebastian's body changing and he dares a look. He doesn't want Sebastian to metamorphosize. He doesn't want the frail, human façade that Sebastian uses. But not until he watches Sebastian's body begin to transform does Kurt realize he had never really considered the mechanics of sex with a demon. Even in his dreams, it was simply a matter of him being there and Sebastian being there, and nature taking its course.
Except now, Kurt notices, there has been one thing missing.
Kurt has been watching Sebastian for days now. He knows every inch of his body, or so he thought. Kurt is not one to stare at another man's anatomy. He doesn't make it a habit of checking guys out on the street, and he doesn't watch those kinds of movies. But in this instance of having his soulmate at his disposal, to ogle over and examine to his heart's content, Kurt has yet to see Sebastian's cock. Sebastian, in his demon form, resembles a tall human covered in dark, sinister-looking, serpent scales. He is broad shouldered with a muscular chest, and his arms and legs are supernaturally huge. He is stark and intimidating, and, for all outward appearances, without genitalia. Being locked away for six days, desperate for the touch of his soulmate, the thought had never occurred to Kurt, but now Kurt can see why.
Sebastian can take many forms and he uses that skill to hide this part of his body – probably because it is a part that makes him vulnerable. Sebastian stops kissing Kurt for a moment to finish his transformation, and Kurt watches the process with awe.
When it is complete, Sebastian is the same except for one change – a rather long, unusually human-looking cock, already hard and leaking between his legs.
Kurt's entire body goes cold.
"Uh…" he stammers, looking comically between Sebastian's amused eyes and his impossible erection.
"What?" Sebastian says in a teasing tone. "Does my body not please you?"
"Um…" Kurt feels stuck in the land of the stupid for his inability to put together words and make them into a sentence. "No…I mean yes! I mean…uh…"
"Just relax…" Sebastian cups his hands behind Kurt's head and kisses him once more, "and let me take care of everything."
Kurt nods, agreeing quickly even though he's not entirely certain what he's agreeing to.
But he trusts Sebastian.
Kurt feels like his whole life has been building up to this point – not having sex, or losing his virginity, which is an outdated and barbaric concept that Kurt doesn't subscribe to anyway. It's the being a part of something greater than himself. It's finding his missing piece and not simply because he needed someone else to complete him, but because there was a specific piece of his heart missing all along – and Sebastian had it.
So when Sebastian carefully turns Kurt over onto his hands and knees, Kurt knows he has nothing to fear. Kurt feels Sebastian's hands manipulate his body - sharp nails sliding down the bruised skin of his back, pulling his cheeks apart with his palms, making sure not to accidentally injure him – and instead of going rigid, Kurt's entire body becomes pliant, obedient. It bends to Sebastian, and Sebastian bends back.
A flash of panic races through Kurt's mind at the thought that Sebastian isn't preparing him in any way, but when Kurt feels Sebastian enter his body, he isn't blunt or forceful. Sebastian is slow and smooth, his body secreting some sort of thick venom that acts like lubrication. Like the acid in his saliva, Kurt imagines this would be excruciating to someone who wasn't Sebastian's soulmate, but to Kurt, it sends tingles shooting up along his spine as it absorbs into his skin. Kurt's body stretches to accommodate him, fitting him like an extension of his own body.
"Oh…" Kurt breathes as Sebastian moves deeper, his voice wavering, punctuated by whimpers that fade into mewls, "oh…my…"
"How does that feel?" Sebastian asks.
"Oh…" Kurt repeats again, leaning forward, hugging his pillow to his chest. He thought Sebastian's cock would burn inside him, the way his tongue burns his skin when it touches him, but it's cool – almost ice cold. It fills Kurt's body to bursting and chills him in the most erotic way.
Sebastian continues to push into Kurt's entrance, and Kurt takes him all – every last inch. When Sebastian's body is flush against Kurt's, Kurt pushes back against him, begging for more.
Sebastian laughs.
"Impatient, little one," he mutters, leaning over to kiss Kurt's skin. He licks the marks that run down Kurt's back. Kurt's hole squeezes around him, and Sebastian begins to move.
Kurt shudders with every slow drag of Sebastian's cock inside him, tingling with venom and exquisitely cold. Every sense in his body is no longer his own. He can feel Sebastian inside him, but he can feel himself around Sebastian, as if they are the same being – as if they are becoming one.
Kurt is still trying to search for an answer to Sebastian's question, but anything that comes from his lips is nonsense.
"How does it feel?" Sebastian repeats.
"I…I can't…" Kurt says. "There are no words…"
"I need to hear your pretty voice," the demon says, grunting as he begins to lose his self-control. Sebastian's fingers curl around Kurt's hips, but he keeps his nails in check. Kurt rises up on his knees to meet his demon, and Sebastian moans as the change in angle puts him deeper inside his soulmate's body.
"I love you," Kurt says, his voice a whisper inside Sebastian's ear. Sebastian squeezes his eyes shut as those words weave their way around his heart. He wraps leathery wings around Kurt's body, keeping them locked close to one another.
"I love you, too," Sebastian replies, kissing Kurt's neck, using the palms of his hands to massage up Kurt's thighs and over his cock. Kurt gasps with each stroke, completely unafraid and unashamed of this need that Sebastian has planted inside him as – with every touch – Sebastian seals their bond.
Sebastian's movements become long and rhythmic, and he mutters into Kurt's ear in a language that Kurt shouldn't understand…but he can. It's a low chant of the same words over and over – "Mine…you are mine…always and forever…mine…"
Kurt mouths the words over soundlessly in Sebastian's chosen dialect, wishing he could repeat it, and as soon as he can give voice to the words, he finds that he can.
"Mine…" he repeats in the harsh sounding, forgotten tongue, "you are mine…always mine…forever mine…"
Sebastian smiles.
"That's right, little one," he replies in the same language. "I'm yours…you are mine…we belong to each other…"
Kurt lolls his head back against Sebastian's shoulder, letting Sebastian support his weight. It's the same magical feeling of floating he had when they were flying together, only now his body stays tethered to earth while only his soul flies free. His mind floods with thousands of images, like a slideshow of Sebastian's life – every moment leading up till now; the long, lonely years of his life until they found one another.
By the end of it, when he sees Sebastian's thoughts come to the same moment in his mind - of the two of them joined together, right here, right now - Kurt opens his eyes and feels the heat in them as they glow red.
Sealing this bond between them makes them a part of each other. Kurt gives a piece of himself to Sebastian, and Sebastian gives a part of himself to Kurt.
As Kurt cums, as he feels himself release that part to Sebastian, as it covers his hand and soaks into his skin, Kurt can feel Sebastian fill him up from the inside. In this way, Kurt gains a bit of Sebastian's demon soul.
And Sebastian gains a portion of Kurt's humanity.
Sebastian's wings begin to unwind from Kurt's body, expecting Kurt to fall forward onto the bed – sated, exhausted, in need of sleep – but instead his soulmate turns and launches forward with a brand new set of fangs, sinking them deep into Sebastian's neck.
"Fuck!" Sebastian cries, throwing his head back at this sensation of teeth piercing the armor of his scales for the first time in his existence. It's a pleasure too decadent to minimize with words. "You can't do that, little one," Sebastian groans, putting a hand to the back of Kurt's head and pulling him in closer despite his own protests, "or we'll be going at it again when you should be resting."
Kurt releases Sebastian's neck and rears up to face him, eyes glowing red and fangs dripping with the black poison that is Sebastian's blood.
"Who says I need to rest?" Kurt hisses, each word revealing the tip of a slightly reptilian tongue. "By all accounts, my love, I think it's my turn."