i do believe that we are practicing the same religion [Flins/Fem!Reader]
SUMMARY. Your best friend’s a vampire. He’s also got a pretty nice dick.
INCLUDES. vaginal sex, missionary, vampire flins, plot kinda. vampire stuff is pushed aside once we get into the smut, pet names (baby girl + good girl) used. no usage of y/n
WORD COUNT. 2010
NOTES. apologies for bad writing.. i’m tired, sick, can’t breath through my left nostril, and my throat is itchy. i came through, though.. i hope? || ok i forgot this wasnt meant to be afab reader until i got a message that it was.. so apologies. this is actually fem reader!
on ao3 here
“What the.. Flins?”
You were used to seeing him in your bedroom late at night, 1:22 AM late if you wanted to be precise, and he was usually sitting beside you with a cup of tea in one hand and the other on your hand. He had a key to your house, after all, the two of you trusted each other with your lives.
It was typical. Every night, you'd go to sleep alone, and in the dead of night, you'd stir, from a nightmare or the urge to use the bathroom or anything, and Flins would be next to you.
But tonight was different.
Tonight, Flins was beside you, yet instead of sipping a cup of tea, he was lying down, eyes transfixed on your neck like it was the most delicious thing in the world.
“Don't worry about it, my dearest,” He coos, voice unusually sweet and soothing, and you almost dismiss his actions if it weren't for the sharp canines he bore that you caught sight of when he flashed you a smile.
“You're..” You don't even want to finish your own sentence. You didn't need to. You knew what he was.
A vampire.
Kyryll Chudomirovich Flins, your beloved, your closest friend, a man who's been friends with you for as long as you can remember, your Flins, was a vampire.
And you had no idea until now.
You've heard the rumors, of vampiric creatures roaming Nod-Krai and attacking anyone from the Fatui to ordinary citizens, and you've heard of the recent spike in deaths, but that couldn’t be Flins, right? Flins, your Flins would never murder anyone or suck anyone dry, right..?
Breaking yourself from your chamber of thoughts and setting them off to the side, you're finally able to summon the courage to finish your sentence. “... a vampire.”
“So smart, aren't you? Good girl.” Flins smiles again, letting his canines gleam under the moonlight streaming through your blinds, and you force yourself to ignore the way your heart fluttered when he addressed you as that.
“How come I've never..” You couldn't notice. In your—no, everyone's eyes, he's always had a vampiric appearance, his pale skin and dead eyes making visitors from places like Mondstadt and Inazuma believe he was a vampire. Even the traveler thought he was a vampire when they first met..
But you and everyone else just brushed it off. It was just how he looked, right? He was a perfectly normal guy who just happened to look like a vampire. A perfectly normal guy with oddly pale skin and oddly dead, sometimes intense eyes.
You were wrong. And now, you were going to be his next victim.
You've read Fontainian novels with vampires in them. Horror novels about vampires sucking their victims dry and leaving them to rot. Romance novels about vampires growing obsessed with a specific person and exclusively feeding off of them.
Was it going to be like this, too?
You had to wonder. Would this be like the former, where Flins would take advantage of his friendship with you and manipulate you into being his next victim, sucking you dry and leaving your corpse to rot in his house? Or would this be like the latter, where Flins would reveal that he was in love with you and make you the source of his food, no matter how unrealistic it might be?
You had to be careful..
“Why so quiet, my dearest?” His voice is unusually flirtatious, more silky and seductive than before. His touch's become stranger. You can't place your finger on it, but instead of the caring, gentle touches you were used to receiving from him, these were darker, more sinister. The way he speaks is drastically different.. “Is there something on your mind?”
“No, just.. surprised.” A half-lie. You were surprised, yes, but also a bit afraid. You had to tread lightly.
“Oh, did you not expect me to be one of them?” He leaves soft, light kisses against your exposed neck, letting his lips trail down from near your ear to down to your collarbone.
You don't say a word, letting him go as he pleases, letting his hands slither around your waist to bring you closer to him while he continues to leave feather-light kisses everywhere. It's gentle, he's always been gentle, that hasn't changed, but his actions almost feel sinister, laced with something darker that you couldn't truly describe.
Silence lingers between the two of you, a comfortable silence, an arousing silence as Flins's hands go down to massage and knead your thighs. Before you can say anything to stop him, to turn him away, he opens his mouth and bites down on a part of your neck, fangs sinking into your flesh.
And… it doesn't hurt?
No, it did hurt. Just not as much as you thought it would. It felt more irritating, if anything. A pain that you'd prefer were gone, but was more of a nuisance than anything.
You can hear him mumble something against his skin, something that sounds like thank you, while his hands on your thigh climb up to lightly rub against your clothed flower. A soft, breathless moan leaves your lips, eyes fluttering shut. He's still snuggled up against you, his chest against yours, his head nuzzled against your neck.
“Flins..” His name rolls off your tongue like butter, voice soft and quiet yet dripping with an undertone of arousal. Something about this, the way he teases you with his hands while his mouth is latched onto your neck..
“'m done..” He whispers against your flesh, slowly pulling away and looking down at you with both adoration and lust. The fear and surprise you had when you first stirred awake was gone, and all that you felt now was arousal and excitement.
You tilt your head to the side just far enough to be able to look back at Flins, struck at how pretty he was. Sure, he was a vampire, but a beautiful one at that, his pale skin smooth like porcelain, eyes so intense you're sure that if you stared too long you'd die.
And you needed him.
No, you needed him in you.
Without hesitation, you begin to spread your legs, giving him access to your (still clothed) sex, watching the tent in his pants grow while his fingers continue to rub against your sweet spot.
You bring yourself closer to him, closer to the point where you could feel his bulge throbbing, close enough that he could start dry-humping you.
Flins’s eyes narrow, arousal and desire flickering in them. “Hold on, babygirl.”
You watch as he gets off of the bed, dropping his pants and boxers to the floor and pulling his top off so quickly you were sure you would’ve missed it if you had blinked. He’s quite lean, his body tall and slender, but he was most certainly hung. Handsome, in a vampiric way. Very handsome.
“Mmm..” He licks his lips, climbing onto the bed and getting on top of you. His gaze is intense, full of lechery, and you’re ready to give him what he needs.
You don’t say anything, just spreading your legs far enough and bringing them up in the air, the chilly breeze of your room tickling your toes as he positions himself in front of you. He leans in and pulls off your pants and panties, tossing them aside and watching them land on your dresser, before leaning in even further where you could feel his shaft against your wet folds. You let out a little moan, staring up at him as your legs wrap around his torso..
“Please,” you whisper. “fuck me.”
A smirk graces Flins’s lips as he hears your filthy words, and without a second thought, he reaches into your nightstand and pulls out some lube—wait, when did you acquire a bottle of lubricant?—and squeezes it onto his hand, lathering it all over his cock. You almost drool at the sight, but you do your best not to as he pushes past your ring of muscle, filling your insides.
“Flins!” You whimper, the sound pathetic yet pleasing to his ears as your back arches upwards. “Yes, please…”
His smirk widens as he sees your reaction, and in response, he begins to roll his hips back and forth, pushing in and out, thrusting his cock in and out of your sex. He’s gentle at first, slow, but his thrusts increase in speed quickly.
You toss your head back against your pillows as moans leave your lips, eyes fluttering shut and fingers curling around the bedsheets, grasping onto the fabric.
The atmosphere between you is charged with desire and passion, pearls of sweat beading up on his hairline and dripping down his forehead onto your waist. Your walls feel so irresistibly perfect around his cock, he just needs more of it.
“Liking this, baby?” Flins smirks down at you, fangs glimmering to remind you of his identity. A vampire. You almost forgot you were having sex with a vampire.
It didn’t matter, though. It felt good.
“Mmhm..” You do your best to nod your head as a string of needier, louder moans escapes you, legs feeling shaky just by the way he was pounding into you. You still have them wrapped around his torso, though, keeping him close and keeping his cock inside of you.
With every movement of his hips, of his cock slipping in and out, his groans crescendo. It’s an extremely appealing sound, and you could listen to him moan for days.. maybe, one day, you’d have him underneath you instead. One day.
Flins’s hands slide up from holding your waist, coming up to your chest. You watch, eyes half-lidded from ecstasy, satisfaction coursing throughout your veins as his hands knead at your breasts, all the while he’s ramming his hips into your own.
To say you felt pleasure was a massive understatement.
This was life-changing.
This was amazing.
“Archons, I’m close..” Flins groaned, his head rolling back as he indulges in his—your—both of your desires, thrusting harder and faster so that he could finally reach his peak. Feeling him fill you up again and again, feeling your walls surround his penis again and again, it all feels so delicious.
You can’t help but tease him. “Already? I thought we just started..”
“You feel too good, baby girl.” He responds cheekily, flashing you yet another smile to show off his fangs.
You’re about to reply, but you feel his tip kiss your cervix, and a loud, desperate whimper escapes you. You’re embarrassed, cheeks flushing—you didn’t know you could be that loud—but Flins doesn’t say anything, just smirking and thrusting even harder.
His hands let go of your breasts and go back down to holding your waist, nails digging into your skin so hard you were sure they’d leave a mark, and you begin to feel your climax building up, too. The edge of heaven is getting closer now, and you’re coming closer to toppling off the cliff and falling into an abyss of ecstasy.
“I’m about to—“ Before Flins can even finish his sentence, his orgasm crashes into him, a tidal wave of pleasure washing over him as he spurts his semen into you. You inhale sharply, and the feeling of his cum in you brings you over the edge.
“I’m— fuck— cumming!” You whine, legs quivering as your back arches and your head falls back, eyes rolling to the back of your head. You feel as if you’ve been hit with an arrow, an arrow full of ecstasy and gratification, an arrow so effective that it brings this feeling to your whole body and soul.
It lasts for about 10 seconds, before you’re finally able to come back down. You just came, sure, and you feel satisfied, but now.. there’s still an emptiness in your soul that can only be filled with more sex.
The look in Flins’s eyes shows that he knows how you feel already. “More?”
“… more.” You respond quickly.










