FDA Certified
human!haechan x vampire!afab!reader
summary: haechan will not stop begging you to feed off of him a/n: hiiii welcome to the newest spooky fic. i thought it would be funny to make haechan a human and switch things up for a change. hope you like it and stream taste by haechan! (didn't proofread- work is so busy) cw: (minors dni) smut, vampirism, reader feeds off of haechan, soulmate!haechan, bigdick!haechan, unprotected p in v (just always expect this from me but be safe!!), creampie, fluff wc: 4k
Finding blood now is probably the easiest itβs ever been. As you got older, you eventually tired of draining people and trying not to get caught, moving from town to town, but you did what was needed to survive. Now in the year 2025, there were blood bars chock full of willing participants, people who volunteered their blood for the sake of the survival of vampires like yourself.Β
You are the co-owner of one of the top blood bars in the city, Diablerie. Technically, you donβt need a job, so you started the bar more out of boredom than anything else, and while a lot of your employees are vampires, a few of them are human. Like Donghyuck.Β
Donghyuck is the most insane human youβve met in your over 300 years of living. Heβs also obsessed with you.Β
βDonghyuck, go do your job-β you monotone from your desk.Β
βBoss, Iβve told you a million times- call me Haechan. Itβs what all my friends call me,β he smiles.Β
βWe arenβt friends.β
βBut we could be-β he singsongs as he bats his eyelashes at you from the doorway.Β
βGo away, Donghyuck,β you try again, not bothering to look up at him.Β
βAre you hungry boss? You can feed off of me, you know! Iβve already been tested, and Iβm AB positive which a little birdie told me is your favorite!β heβs practically begging at this point.Β
Youβre saved by Jaemin, the human youβve hired to be the manager.Β
βHaechan, come on. The kitchen needs your help,β he says, grabbing the menace by his collar and closing your office door. Gotta love Jaemin.Β
Aside from Donghyuckβs usual flirtations, your Friday night was going swimmingly. The bar is full of vampires and humans alike, everything running smoothly. Although apparently the universe thinks you can never have anything nice because thereβs a drunk human whoβs being reckless. Youβd think this wouldnβt be a problem, but some vampires liked to have blood with some alcohol in it since regular alcohol did nothing for them. It might not be entirely worth it since having drunk humans around can lead to situations like this.
βBoss, thereβs another rumdum on the floor, and Jaehyun stepped out to run an errand,β Jaemin says as he walks into your office. You sigh and get up letting him lead you to the culprit.
βYou fucking blood suckers! You deserve to go to hell!β the man yells as he sways.
You roll your eyes, but then this man seemingly sobers up upon laying eyes on you, now appearing much bigger. All of a sudden, he pulls out a wooden stake and charges at you, catching you off guard. Youβre in shock, and he moves to kill you and honestly wouldβve gotten very close if it werenβt for Donghyuck appearing out of nowhere and shoving him onto the ground, beating the shit out of him. Heβs dealing blow after blow, yelling about how the man needs to learn his place and shouldβve never fucking tried it.
βDonghyuck, stop!β Absolutely no response.
βDonghyuck!β Still nothing.Β
βThatβs enough!β you yell and yank him off the insane mortal who is likely regretting his stupid decision to try to kill you.
βAre you okay, boss?β Donghyuck takes your face in his hands as he comes back down to earth and remembers you couldβve been killed.Β
You are very grateful that you are incapable of blushing or having your face heat up because you feel slightly flustered at him saving you despite just being a regular human. Donghyuck sticks as close to you as possible as you try to do your work and is extremely concerned for you, suggesting you leave early. Actually a more apt description is he followed you around for around 45 minutes after the incident and begged you to leave, which is a sentiment that Jaemin echoes. The gesture is nice, though you donβt have the heart to tell the both of them that they are far more susceptible to being hurt than you are. You appreciate the thought, though, and decide to go for their sakes once your co-owner returns.
βReady to go, boss?β Donghyuck says.
βReady to go?β you repeat confused.
βYeah, Iβm walking you home,β he says matter-of-factly.
βOh- um, you donβt have to do that, Donghyuck- thanks though.β
βUnfortunately for you, boss, Iβm not taking no for an answer.β
It was nice to have a companion after an attempt on your life, however, you did not realize in the moment that this was, in Donghyuckβs mind, an βinβ with you.Β
Two months had passed since that night, and he was still walking you home every day after work. For the most part, you were surprised to find that the two of you had plenty of pleasant conversations, talking about mutual interests and sometimes incredibly deep conversations that would last until sunrise was on the horizon, putting an end to anything you were saying. It wasnβt that you would be sleeping either, but it felt like a good boundary to have. Youβd always be on your front porch chatting it up, and you would never let him in because- at the end of the day, heβs your employee and while you donβt technically have an HR department, you still donβt want to cross that boundary especially when heβs so young.
However, not every walk was peaceful. A lot of times even if the majority of your walk was peaceful, he would be begging you to feed on him. You think he must have a vampire kink which is possible. A lot of donors do tend to have a vampire kink, and youβve heard the sensation can be incredibly arousing for a lot of them. Whatever it takes for you to get to where you wanna go- you donβt judge. You donβt care for the reason that the donors do it as long as theyβre doing it. Youβve told Donghyuck time and time again that he should just be a donor if he wants it so bad.
βPlease feed off of me boss-β heβs walking backwards directly in front of you, two seconds from falling over something in his way.
βDonghyuck- if you want to be fed off of, you should just donate,β you sigh.
βIf I donate, will you feed off of me? Because Iβll sign the papers right now.β
Day after day, you were propositioned by Donghyuck to suck his blood, and day after day, you denied him. He was definitely never giving up- that man is resilient. However he didnβt need to wait very long to get you because today- you were having a bad day.Β
There were a million obstacles that got in between you and getting to the bar on time for you, including being out of blood at home. You decided that youβd eat at work only to find out that a lot of your donors had pulled out that night since there was a stomach flu going around. Even with your reserve volunteers, you were going to be short tonight meaning youβd have to close early. You were so stressed and it felt like you were running around like a chicken with its head cut off.Β
Finally, after closing early, you were excited to go home and hope for the best for the next night and gather your bearings. Jaehyun said he had a connection and could get more donors to cover those missing. You were walking up to your house alongside Donghyuck when you suddenly felt very weak. In all of the hubbub, you had forgotten to feed. Even if you hadnβt forgotten it you probably would have forgone it seeing as the bar needed as much blood as it could get.
You put a hand on Donghyuckβs shoulders as you feel yourself getting weaker and weaker.Β
βBoss? Is everything okay?β
βForgot to feed. Donβt have any blood at homeβ¦β you mumble feeling weaker as every second passed.Β
βBoss, seriously?? You need to feed now!β he helps you up and into your home, gently sitting you down onto your couch. Donghyuck rolls up his sleeve and puts his arm in front of your mouth so you can feed but you arenβt budging. Heβs confused and doesnβt understand why you arenβt doing anything.
βDonβt tell me youβre being this stubborn, boss,β he rolls his eyes and looks around, getting up and coming back with a knife. He knows you wonβt be able to hold back if you can smell the blood coming out. He makes a small cut on his arm, just enough to bring some blood out and watches as you still try to fight it.Β
βCome on, boss, you know you need me- just do it. Use me.β
His words are enough to send you forward latching onto his arm and finally having a meal. What you do not expect is how delicious his blood would be. That shit goes hard. Itβs sweet and flavorful and it's better than any blood youβve ever had. You honestly feel like you could feed off of him forever. If you were able to get into heaven, youβd swear this is it as you feel the warm blood traveling down your throat. Another thing is youβre kindaβ¦ horny. Like it feels like your body is on fire and all of your cells have been turned up to 100% sensitivity.Β
Donghyuckβs doing about the same as you. He had been a donor before he officially started working at the bar, and he knew that being a donor came with some physical side effects. A lot of people definitely got horny and while it felt really good physically, he was never really affected that way. But right now he was in another world. His eyes were closed at the sensation of you feeding off of him, and he could feel himself getting harder by the second, fighting the urge to touch himself through his pants. There was this buzz throughout his body that was unlike anything heβd ever felt before, as if his body was vibrating.Β
You luckily had a sense of self control and were able to stop at the very minimum amount of blood that you could take and feel full, but that was the best fucking blood youβve ever had and you still feel like youβre in a hungered state. You look up to see how Donghyuckβs doing. His eyes are hooded and you can see that heβs hard through his black work pants. He looks so good to you right now but not only in terms of feeding off of him, you really wanna jump his bones. You both stare at each other for a beat before he jumps towards you attacking your lips.Β
Heβs a mess and desperate and his hands are everywhere. His mouth is aggressive, and heβs grinding up against you, whining. You pull away but he just resigns himself to move to your neck leaving wet open mouthed kisses, even biting a little bit making your back arch and tearing a whine out of you.Β
βDonghyuck.β you try and he just hums still desperately leaving kisses on every exposed piece of skin.Β
βDonghyuck!β you try again and you donβt even get a response this time.Β
βHaechan!β you yell as you pull him off you by his hair. He is so far gone, his pupils dilated, but there is some level of recognition because he says:
βDid you just call me Haechan?β
βYes, we need to-β
βIβm going to fuck the shit out of you-β he goes to kiss you again but you still have a hold of his hair. The attempt makes him moan again.
βOkay, but can we move to my bed please?β you smile sweetly. You get up and take his hand, leading him to your room where he proceeds to push you down onto your bed and resume kissing you as passionately as possible, but now his hands know exactly what theyβre doing and he starts taking all your clothes off, leaving you bare for him. He starts kissing down your body, eager to get started, and you whine.
βHaechanβ¦βΒ
βIf you keep saying my fucking name like that, Iβm gonna cum,β he says seriously as he arrives at his final destination, leaving a kiss on your clit. He watches you squirm a bit but doesnβt allow for a lot of time before diving into you and sucking on your clit, fucking one finger into you.Β
βHaechan,β you whine, βPlease. You can do this next time. I just want you to fuck me-β
βThereβs gonna be a next time?β his voice cracks at the comment before remembering what heβs there to do. βIβm not doing this for no reason, boss. I need to stretch you out to take me,β you clench at the implication that heβs big as he inserts another finger. He continues adding fingers, only increasing your wetness thatβs now making a horribly sinful squelching noise as he fucks four fingers into you.Β
βHaechan I think Iβm ready now- please. I need you.β Upon hearing that, heβs completely ready and desperate to be inside you and give you what you want.
Haechan grabs a hold of your legs spreading you for him and pushing them towards you. He slides into you faster than he means to and moans and whines and immediately begins thrusting hard, absolutely losing himself in you not knowing what to do with himself. You feel so good, and he feels bad because heβs so big but he canβt help but pound into you. Heβs so so needy and rams into you with his eyes squeezed shut as he tries to focus on not cumming immediately because oh my god youβre so hot and heβs wanted you for so long and he canβt believe this is happening.Β
βIf this is just another dream, I'm going to be pissed,β the needy human groans, lost in how tight you are around him. You're so confused at the comment, and he sees it when he opens his eyes to look at you.Β
He blushes and says, βIβve had so many dreams about you, boss, and in all of them, we end up here. But fuck this feels better than I couldβve ever imagined.β
Knowing heβs been dreaming about this makes your whole body shudder. He notices that you must be getting close and fucks into you harder as his thumb goes to rub your clit.
βYou always made the sweetest noises for me in my dreams, baby. You always felt and looked unreal, but after seeing you now,β he moves so that his lips ghost over your ear, βdream you could never compare to the real thing.β
βHaechan, Iβm gonna-β
βYes, please let go for me, baby. Let me feel it, let me feel you. I need you. I need to feel it. I'm so desperate to feel you cream my cock, please let go for me, give it all to me-βΒ
His words send you shooting into space, your walls squeezing him so tight and your body convulsing with pleasure. This is certainly a night of firsts, and youβre sure this is the strongest orgasm youβve ever had.Β
Post nut clarity is crazy because while yes, you definitely had an inappropriate relationship with your employee, you actually really donβt care and are desperately craving both his blood and his cock. What you are concerned about is how badly youβre craving his blood and how out of this world the taste was.
βJaehyun, have you ever had some, like- really fucking good blood?β You had asked Jaehyun to deal with everything for the night so you wouldnβt have to go to work (or see Haechan). He was now sitting on your couch because it was so unlike you to call out, so he had to make sure all was well.
βI mean, like blood preference? Yeah, I fucking love O negative- you know this?β he says confused.
βNo like- Fuck, Iβm going crazy-β you groan, putting your head in your hands.
βWhat?β he laughs trying to understand, until a realization washes over him. βWaitβ¦ is this about Haechan? Did you feed off of him??β
βSHUT UP!β you yell, throwing a couch pillow at him.
βOh my god- no wonder he was asking me to beg you to come backβ¦β
βYou canβt tell anyone, Jae,β you beg.
βY/N, who am I going to tell?β he laughs.
βFine, fine, fine. I hooked up with Haechan last night and fed off of him, and it mightβve been the best blood I've ever tasted. Like ever. Iβm talking liquid crack. Like straight up gold coming out of him.β you ramble.Β
βWha-β
βAnd I have fed off of other people I find attractive before so that's not it.β
βWhoa.β
βHelp,β you squeal.
βHow am I supposed to help?β he asks incredulously.
βCan you maybe feed off him to see if maybe he just has really yummy blood?β
βYou want me to feed off of Haechan?β
βYes Jae, please,β you cry, being as dramatic as possible, βIβve done you so many favors since I've known you.β
βFine,β he groans. He can never say no to you.
He calls you about an hour later.
βIt took me manipulating our employee, but I can report- his blood is basic as shit.β
βFuck!β
βOk soβ¦ are you gonna call Taeyong?β
βFuck, I donβt wanna do this,β you whine.
βIf you donβt, I will,β he says and you can hear the shit-eating grin on his face.
βFuck, fine!β
Now you find yourself at Taeyong's front door. Heβs the head of your coven, though, it's been a while since youβve all had a meeting. Heβs always been very old school so he didnβt love the idea of a blood bar. That didnβt stop him from being supportive from afar.
You softly knock on the door.
βHi Taeyong-β you start when he opens the door.
βJaehyun filled me in.β
βThat bitch,β you mutter.
Tell me in your words though,β he says as he lets you in.
βHm.β
βThatβs all you have to say?β you ask slightly annoyed.
βWell I know you know what I'm going to say,β he says standing up to look out the window.
βI've just- I thought soulmates were something you talked about as a joke.βΒ
βDo you think I warned you about being wary of the humans you feed off of for the fuck of it?β
βIβve just never met anyone who had a soulmate,β you respond.
βHave we not met?β
You freeze at what heβs insinuating. βYouβ¦ have a soulmate?βΒ
βHad.βΒ
βOh, Taeyong. I'm sorry,β you say softly. He turns and sees that you really mean it, a soft smile making its way to his face. He sits next to you, taking your hands in his.
βItβs okay. It was a long time ago, shortly after I was turned. I wanted to turn him, but he didnβt want to be doomed to this life. I had no choice but to accept that becauseβ¦ I love him. I loved him until the day he died. Legend says we all have multiple soulmates since we live so long but- there will only ever be one for me.β
βIβm so so soooo sorry, Taeyong,β you give him a hug, holding back tears on his behalf. βThank you for talking to me and trusting me with this information.β
βOf course. You need to be wise, though. Whether or not he wants to be turned, I recommend you love him for as long as you can.β You stay and catch up a little bit longer and offer to send a donor to him every once in a while, so he doesnβt have to hunt. Heβs still super old school, but he tells you heβll think about it. You slowly make your way back home, taking the long way.Β
Donghyuck. Haechan. That dweeby desperate little human whoβs been obsessed with you since he met you. He is your soulmate. A concept that you didnβt even know was real, especially not for someone like you.Β
How do you break it to him? What do you even say? Before you know it, youβre walking up to the bar. You donβt know why youβre here. Itβs the end of the night so heβs probably already gone. You sigh and start walking home when from behind you, you hear, βBoss?βΒ
When you turn around, Haechan is running towards you and wraps you up in the tightest hug.Β
βI missed you so much.β
You laugh a little bit and reply, βI missed you, too!β
He is still hugging you as tight as can be, but he moves to nuzzle into you.
βCan I walk you home?β he mumbles into your neck.
βOkay.β
When you pull up in front of your house, you blurt out, βI have something I need to tell you.β
βYou can tell me anything,β he comforts.
βWhat do you know about vampires?β
βI know that a human gets turned by feeding off of another vampire. You're basically invincible and incredibly strong and fast. You canβt go out in the daytime unless itβs cloudy or raining. You feed off of humans, and in the olden days, they would drain humans entirely.β
βOkay well thatβs pretty good. One additional thing is that vampires have soulmates, mortal soulmates. A big tell for a vampire when they meet their soulmate is that upon feeding on them, itβs the best tasting blood ever. Thereβs a lot of other little things besides that, but the vampire will feel very drawn to their soulmate at all times after the first feed and the same goes for their counterpart.Β
βOkayβ¦β he says hesitantly.
You stay quiet not knowing how to break it to him, hoping that the silence in the air is enough to make it click.
βAre you saying that I'm yourβ¦ soulmate?β
You brace for impact and close your eyes to avoid eye contact entirely when you say, βYes, I- I think you are.β
βOh. My. God! This is the best day of my life!β You open your eyes and see Haechan pumping his fists in the air jumping around, excited about this announcement.
βItβs not that simple, Haechan.β
βWhat do you mean? Youβre my soulmate. Seems pretty straightforward to me,β he shrugs
βYouβre a human-β
βOkay.β
βIβm a vampire.β
βOkay? I know this boss.β
βIβm immortal, and-β your mouth struggles to say the next words, βandβ¦ one day youβre going to die.β
βSo turn me,β he says casually.
βYou canβt just make a decision like this so offhandedly! Donβt you wanna think about it?β At that, Haechan puts his hands on your shoulders, focusing you to look at him.Β
βAre we or are we not soulmates?β
βYesβ¦β you mumble.
βOkay, there you go. Even if we werenβt, I would marry you right now. Have you not noticed Iβm actually pretty fucking insane about you? There is nothing calm or cool or chill about the way I feel about you. I mean- I was throwing myself at you for months! I've been ready to spend the rest of my life with you since the day that I met you,β he says, taking your hands in his.Β
βI thought you were just insane in general,β you joke to deflect.Β
βIβm sure about this, darling. I promise.β
You lead him into your home and ask him about a million more times if heβs okay with this. He assures you every time that he wants this, wants you. The whole situation feels very intimate. The last person you turned was Jaehyun and it felt nothing like this.
Once heβs fed off of you enough to turn, youβre playing with his hair as his head lays in your lap, and he adjusts to all the new sensations that come with being undead. Then, he whines, and youβre terrified that he already regrets his decision.Β
βWhat- whatβs wrong?β
βDoes this mean youβre going to feed on other people?β he whines.Β
βHaechan, Iβve already been feeding on other people-β you laugh.Β
βBut now you have me,β he pouts.Β
βAre you feeling jealous?β you tease.
βYes, Iβm so obviously jealous. I have every right to be! I donβt want your mouth on anyone else!β
βWell, hereβs a little known secret- vampires can feed off of each other,β you smirk.Β
βOh thank god- I love this, I love you, Iβm so glad. I love you I love you,β he shoots up to give you a smooch. βIβm going to make you so full.β You almost moan at the double entendre.
βJust consider me your universe-given, FDA-certified blood bag.β he smiles before attacking you with kisses.Β
divider by @strangergraphics







