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Drunk on Blood, High on You

Summary:

When Katsuki wakes from a two-hundred-year forced slumber, he's starving and disoriented. He stumbles his way into the nearby village, only it has become a massive city in his time entombed. Barely suppressing the bloodlust, a Good Samaritan of a human saves him from getting nearly hit by a car before he can carelessly attack someone. Alone in this man's apartment, Katsuki gives into the hunger, and discovers a new desire that might taste better than blood.

Notes:

For Maika. I really loved your vampire prompt suggestion. A couple of years ago I went through and read every single fic in the krbk tag marked as either Vampire Bakugou or Vampire Kirishima (that's how few there were) and it's a trope I've been meaning to write for a long time. I don't write submissive Bakugou, so I really hope he comes off the way like it. I tried.

Work Text:

There's a loud creak in the quiet of a dark, empty room as the sole piece of furniture within the four walls opens. Katsuki pushes open the lid to his coffin with more force than should be necessary. The hinges snap, causing the lid to fall to the floor with a clatter. Tired eyes blink rapidly to adjust to the darkness of the room. His gaze falls to the broken lid on the floor and notices ropes and chains that lay beside and underneath it, frayed and broken. There's a weathered piece of paper nailed to the side of the coffin. DO NOT OPEN, it reads. 

He rolls his eyes, remembering the feeble humans that locked him away however long ago. The only reason they managed to trap him was because he couldn't in good conscience slaughter an entire village. Now, though, he's considering it. He has withered away in his time spent asleep. His usually peachy skin is ashen and bone thin. He's painfully parched, throat dry, and scratchy. Every swallow of saliva is like eating chalk. 

Katsuki climbs out of the coffin to venture through the mansion in search of a meal. The place is dilapidated. The staff in charge of maintaining the mansion have clearly not done their jobs in a very long time. How long was he in that coffin for? The walls are peeling, there are holes in the roof, the floorboards creak and splinter with every step. He stumbles his way down the hall in search of the kitchen. Every lantern is broken, not that he needs them to see, but it would be nice to turn on some light. 

The glass bottles of blood have all gone dry. Katsuki pulls the stopper out of one after another, but they've either been emptied or have long since expired. Shit, he thinks, slumping to the floor. He used up what little stamina he had busting open his coffin. He doesn't have the strength to properly hunt for a meal. Katsuki balls his hand into a fist and slams it lightly against the floor. Maybe there's a bleeder den in the village… 

He's not a fan of bleeder dens. The humans always taste like other vampires and there's no hunt to be had. The only upside is that it's filled with humans that enjoy the effects of vampire venom and want to be turned. Though Katsuki's not sure why anyone would enjoy the effects of venom. Feeding has never been pleasurable for him or his victims. He pulls himself back to his feet with the single thought of food, keeping him focused and grounded. 

It's blessedly night when he pushes open the front door of the mansion. The door hangs askew, threatening to fall off its hinges much like the coffin. The walkway is overgrown with weeds, and the grass is dewy under his bare feet. Katsuki's tunic smells of mothballs and his once brown slacks are faded tan. He needs new clothes in addition to a meal. He cards his fingers through his hair as he walks, and the greasiness tells him he's overdue for a bath as well. He's a mess all around. 

The mansion sits atop a hill overlooking the village, buried deep in the forest. As he makes his way through the trees, he sees that there are lights filling the darkened sky below him. There must be some sort of festival going on for how brightly lit the night is. Unfamiliar sounds reach his ears, and a foul odor lingers in the air. There's a tickle in his nose, and he sniffs in a failed attempt at a sneeze. The hunger grows stronger with every step he takes, fulling him forward towards the busy streets. 

Instead of paved dirt, there's some sort of black rock under his feet. The buildings look as if they ascend into the heavens, and there are so many strange lanterns that he could easily mistake the night for day. The streets are wide with flashing lights and blaring horns. There's music coming from somewhere to his left, but he doesn't see anyone with an instrument. 

There are people everywhere in clothing that barely covers their bodies. Some laugh. Some shout. Many walk in a brisk pace, hurrying from one place to the next. Katsuki's head spins from overstimulation. Once again, he wonders just how much time passed while he was asleep. This isn't anything like the era he last lived through. Someone bumps him, calls him homeless, and he's falling into the middle of an intersection. Fast moving carriages with bright lights attached to them go racing by. One of the carriages is headed straight for him and there's another loud horn blaring in front of his face. 

"Hey! Look out!" 

A voice catches his attention, pulling Katsuki's focus away from the carriage barreling towards him to the human standing near the street corner. His eyes—red like the blood moon—are fixed on Katsuki. There's more honking and the human is swinging his arms, but all Katsuki can focus on is the intoxicating way his blood smells from three meters away. The thumping of the human's heart quickens, and Katsuki can hear the rush of his blood even above all the other sounds around them. His fangs descend and his teeth itch. He's desperate to taste that blood on his tongue, to lap up every last drop and suck him dry. 

Katsuki takes half a step towards the human, only for a blur of red hair to come rushing towards him. The human throws himself at Katsuki and the carriage that had been honking zooms by. The lights fade away as they tumble to hardened ground. Katsuki hisses, feeling his palm scrape from the rough landing. 

"Are you okay?" the redheaded human asks in a panic. "You could have been hit by that car! Why didn't you move?" 

Katsuki opens his mouth to speak but falls short as the human runs his hands up and down the length of Katsuki's body in search of injury. He's fine, save for the scrape on his palm, but it'll heal quickly once he's had a meal. How ironic it is for a human to be worried over him. He lifts his head, meeting the human's worried gaze, and the air rushes out of his lungs. Never has Katsuki seen a more beautiful human. When he doesn't reply, the human draws in a breath, his carotid vein pulsing against his throat, then exhales slowly. 

"Are you okay?" he asks again, calmer. 

Katsuki tries and fails to wet his incredibly dry lips. His mouth parts, the words taking shape on his tongue. "I'm f—" he croaks, voice irritated from disuse, but before he can finish the sentence, everything begins to spin. He wants to say: "I'm fine. I wasn't in any danger," but the words he was searching for fail him. Instead, the dizziness from hunger makes him see spots and cramps his stomach. He falls forward into the human's arms, forehead slumped against the redhead's shoulder, then it all goes black. 


Katsuki wakes on a soft, cushy bed to bright lights and the hum of something electrical. There's a small weight on his forehead and he lifts his hand, finding a heated cloth pressed against face. Warmth spreads from the cloth all the way down to his toes, and he groans at the brightness of the room. There's a startled gasp somewhere to his left, and then a clattering as something hits the floor. Katsuki winces from how loud it is. 

"I'm sorry," says the voice, rushing to pick up the mess that was made and hurrying to Katsuki's side. 

Katsuki turns to see the redhead that was shouting at him on the street. He remembers the panicked look on the stranger's face as he tried to push Katsuki to safety. Foolish idiot. "Where am I?" he asks, blinking rapidly to adjust to the room's light. 

"My apartment," the man says. "You passed out and my place was nearby. Now that you're awake, we should really take you to the hospital. I've been trying to get you warmed up, but you're so cold." 

"M'fine," Katsuki slurs. The starvation is killing him. He needs to feed. It's taking every ounce of his willpower to refrain from ripping this stranger's throat out. 

"You're not fine!" the man argues. "You collapsed in the street." 

"I'm just hungry," Katsuki explains. His head throbs from the brightness of the room, and he hisses. "Can you turn the lights down?" 

"Oh, yeah, sure." The man jumps to his feet and shuts off the overhead light, flicking on a lamp instead. "If you're hungry, I could make you something. You're so light. When was the last time you ate?" asks the stranger. 

"About two hundred years," says Katsuki, pulling himself up into a seated position. 

"What?" Red brows knit together in confusion as the man stares at him. 

"Nothing," Katsuki says, shaking his head. "What's your name?" 

"Kirishima Eijirou," says Kirishima. "I don't have a lot in the fridge right now, but I can probably make some fried rice or something…" 

Katsuki wets his lips to the best of his ability, a difficult feat considering how parched he is. The delicious aroma of Kirishima's blood is even stronger in the tiny studio apartment. His throat bobs as he swallows, and his fangs descend. Kirishima is standing in front of his strange little icebox, bent over as he looks through the ingredients. Katsuki swings his legs around so that his feet are planted on the floor. Kirishima looks up at him, one hand still clinging onto the door, and cocks his head. 

"I have a better idea," Katsuki says. 

"Hm?" asks Kirishima. 

Katsuki crosses the short distance of the room before Kirishima can protest that he should stay in bed. It only takes four strides to put him face to face with the man. He runs his tongue over the front of his teeth, feeling the way the tips of his fangs dig into the muscle. "I'm not interested in that kind of food," he says, low and sultry. 

Kirishima's eyes widen and Katsuki snatches him by the shirt collar. He reels him in close and sinks his fangs into warm, tanned skin. Instant relief floods his body. Kirishima struggles against him, attempting and failing to throw Katsuki off him. There's a protest on his tongue that catches in his throat, then he goes limp against Katsuki. His head lolls to the side, giving Katsuki more access to his throat, and a simpering moan escapes full lips. Katsuki presses the front of their bodies firmly against one another. He swallows down mouthfuls of the most delicious blood he's ever tasted, eyes rolling back with each gulp. 

His skin is on fire as living blood begins to course through his necrotic veins. He can feel his entire being growing more alive. The ashen hue to his skin is a supple peachy beige. His emaciated state fades, and his muscles become more defined. His strength returns, and along with it, he feels a burning desire he's never felt before. Everything is more alive. Heat flushes his cheeks and pools in his groin, a sensation Katsuki's all too unfamiliar with. And judging by the hardness that's pressing against his inner thigh, Kirishima is feeling a similar heat. 

Katsuki pulls back, freeing his lips from the succulent tap that is Kirishima's throat. He licks away the rivulets of blood that dare try to escape, rolling down his clavicle. Kirishima moans, throat husky with desire and eyes glossy when he tries to focus on Katsuki's face. They're both panting, chasing a high neither is prepared to relinquish. Katsuki licks his lips, tastes Kirishima on his tongue, and bites back the desire to devour him fully. It's been centuries since he last drained a human. The bloodlust is intense after starving for so long, but he's better than that. 

Kirishima opens his mouth to speak but he struggles to focus. He grabs Katsuki by the hips to steady himself. "You're a vampire," he breathes, voice thoroughly wrecked with arousal. 

"Yeah," Katsuki says, and his own voice sounds foreign in his ears. "Obviously," he adds. 

Kirishima stares at him. Color fades from his cheeks due to the lack of blood. Katsuki studies him in turn, notices the flecks of amber in his crimson eyes, and the tiny scar on his eyelid. His cheeks dimple slightly and at the base of his roots, there's a touch of black. So red isn't his natural color, Katsuki thinks. 

Kirishima's gaze wanders down Katsuki's body and back up, lingering on his chest and crotch before lazily lifting back to Katsuki's face, then down again. His reaction, a sluggish leer, draws a blush on Katsuki's newly revitalized cheeks. "Wha'ss…" Kirishima slurs, then teeters forward. Katsuki guides him over to the bed to sit down, though they end up falling into a tangled mess of limbs. 

Katsuki's on top of Kirishima. He props himself up with his hands on the mattress and watches as red hair spills out on the pillowcase, fanning around Kirishima's sharp features. 

"Why am I so hard?" Kirishima manages after a moment. 

Katsuki's own gaze drifts south where their hips press against one another. If he had a functioning heart, it would likely be hammering in his chest, pumping blood throughout his body and noisily filling his ears. "Ah," he says, leaning back so that he's sitting on his knees. "I guess that happens sometimes but it's a first for me…" 

He's heard of humans getting turned on when their blood is drunk. It's why bleeder dens are so popular—or were, he's not sure things are like in this current century. The humans go into an orgasmic state of arousal and become addicted to a vampire's venom. When the human is turned on, it changes the way their blood tastes, and the vampire in turn gets aroused as well, high on the human's blood. It's not an experience Katsuki has ever encountered. His feedings were always very clinical—either drink the human dry or take just enough to get by. He rarely touched them aside from his mouth, and never has he been drawn to a human's scent before. He lived a life primarily of solitude. 

Kirishima moves to sit up, leaning against the wall for support. He wets his lips. His little brows furrow in concentration as he powers through the haze that fills his mind. "First time getting someone hard?" he asks carefully. 

"And also getting turned on," Katsuki admits bashfully. He turns away, too embarrassed to keep making eye contact with the human. This whole situation is painfully new, and he'd rather just kill the man than endure it for a second longer. 

"Ever?" Kirishima asks. 

Katsuki nods slowly. 

Kirishima scoots closer. He presses a gentle hand to Katsuki's cheek, guiding his attention back to him, then lets his gaze flit down, taking in the way Katsuki's own erection tents his linen trousers. "I didn't catch your name," says Kirishima, husky voice causing more heat to collectively pool in Katsuki's lower abdomen. His dick twitches in response. 

"B-Bakugou Katsuki," he says. Warning bells go off in his head. He only just woke up. He knows nothing about the current world. Better vampires than him have fallen to the pits of despair by getting addicted to a human. 

"I can think of an easy way for us to take care of this problem," says Kirishima. His little red brows pinch together in concentration. "If you'll have me," he adds. 

Shit. Kirishima is so warm with his strong hands cupping Katsuki's face. His red eyes sparkle so bright that if Katsuki didn't know better, he'd wonder if Kirishima is a vampire too. Despite having just drunk, Katsuki's mouth is parched. He presses his tongue to the back of his teeth. 

"Yes," he croaks out. Katsuki wants to know what more of this human tastes like, not just his blood. That seems to be all the confirmation Kirishima needs. He surges forward, capturing Katsuki's with his own. 

Kirishima's hands move, one curling into the hair on the back of Katsuki's neck, the other sliding south until it rests on his hip. Katsuki melts into the touch. His eyelids fall shut, and he nips at Kirishima's bottom lip. He tastes blood on his tongue, drinking Kirishima in as their lips do this push and pull, tugging on one another. He moans as Kirishima ruts up, grinding their clothed cocks against each other. Katsuki clings to his shoulders, desperate and helpless. He's out of his depth. He has been, ever since he woke up in his coffin a few hours earlier. 

"Lift your arms," Kirishima breathes as their mouths part for air. Katsuki does as he's told. Those warm, rough hands slide up the length of his torso, shedding his tunic until his chest is bare. "Wow," Kirishima breathes. Katsuki snaps his eyes open to see what Kirishima's looking at. He's shocked to discover it's him. Kirishima runs his tongue over his swollen, bloody lip. "They always said vampires were attractive to lure in prey, but I didn't realize just how attractive one might be." 

Thanks to the blood currently rushing through his body, Katsuki blushes. His cheeks burn, and the flush runs down to his chest. The red of Kirishima's eyes turns to barely a sliver, pupils blown wide with arousal. Katsuki leans back, then reaches to remove Kirishima's shirt as well. The human obliges effortlessly. Kirishima's more attractive than any vampire Katsuki's ever met. 

"Vampires don't hold a candle to you," he confesses. 

That earns Katsuki a small chuckle from Kirishima. Those hands are back on his hips, and he flips them around so that Katsuki is now flat on his back with Kirishima hovering over him. He shimmies down Katsuki's body, peppering kisses as he goes. Kirishima lingers near Katsuki's nipples, taking the hardened buds into his mouth, one at a time. Katsuki gasps at the wet heat. Hands cup his chest, massaging the muscle as Kirishima laves his tongue over each of the buds until they stand even taller. 

"I've never met anyone with a chest this perfect," Kirishima murmurs. Katsuki whimpers as saliva begins to cool, but he doesn't have long to think about it because Kirishima is taking his trousers off, leaving him fully exposed on the bed. "Wow," Kirishima says again. 

Katsuki's breath is ragged. His hands are on the pillows by his head. He reaches to cover himself, but Kirishima quickly catches him by the wrist to stop him. "Don't," he says. "I want to see you." Katsuki chews on his bottom lip. How can one human unravel him so easily when he's spent a lifetime without ever being touched? 

Kirishima leans down and sucks bruising kisses into Katsuki's thigh. It makes his back arch off the bed and he moans. He balls his hands into fists in the sheets, gasping for air. Those same warm lips move to the middle, pressing lightly against his balls until one is sucked between Kirishima's lips. "Ah!" Kirishima smiles smugly up at him from where he's positioned with Katsuki's testicle in his mouth. "Oh, oh god—" Katsuki chokes. A hand wraps around his cock, giving a few tentative strokes. "Shit. Oh my god—ah!" 

Tears burn at the corners of Katsuki's eyes. Kirishima has barely touched him and he's a whimpering mess. Is this what it's always like for those that indulge in their meals? His skin burns just below the surface, itching for more. Kirishima's thumb swipes against the head of Katsuki's cock, working circles on the tip. "I'm gonna—" he chokes, feeling the tightness in his gut as his balls clench into themselves, and his vision goes spotty. 

"It's okay," Kirishima coos, releasing the suction he's built around the testicle he had been rolling in his mouth, laving his tongue over the underside. Katsuki gasps. A garbled moan rips from his throat, and he chokes on a sob as he cums. Warmth paints his stomach white, and he's gasping for air as his lungs work overtime. His chest, now flushed pink, rises and falls in rapid succession with each labored breath. 

He's a mess on the bed; mind clouded from the first orgasm he's had in hundreds of years. It's more intense than anything he's ever done to himself. He'd feel embarrassed over the sounds he made if not for the heady look in Kirishima's eyes. If Katsuki didn't know better, he'd think Kirishima is actually the vampire between them, with the way he looks ready to devour Katsuki. He swallows thickly, Adam's apple bobbing as he loosens his fists. The sheets fall away from where he was clenching them. He's not sure what to do with his hands now. Absently, he moves them to his sides. 

Kirishima reaches for the shirt he discarded, wiping away the mess on Katsuki's abdomen, then reaches for something under his bed. Katsuki follows him with his eyes, letting his gaze settle on some sort of box that Kirishima pulls out from under this bed. "What are those?" he manages to rasp. Kirishima stills, seeing what Katsuki's looking at. There're all sorts of strange looking objects in the box, but the thing Kirishima pulls out is some sort of bottle. 

"Those can be for next time," Kirishima says without actually answering. "I don't wanna overwhelm you." There's a cute flush on his cheeks that makes Katsuki want to sink his teeth into him again, to find out what that embarrassment tastes like. Next time, he said, a promise of more to come. 

"Next time," Katsuki agrees, as he watches the box disappear back under the bed, mind reeling on what those items could possibly be used for. 

Kirishima opens the bottle he pulled out, squeezing it. The squelching noise it makes draws Katsuki's attention back to him and off the mysterious items. There's so much about this new world he doesn't understand. Kirishima massages the liquid he squeezed out between his fingers. His tongue plays with the tip of his canine while he concentrates on his task. 

"What is that?" Katsuki asks. 

A smirk tugs at the corner of Kirishima's mouth. "Lubricant," he says. "It'll help make it easier to fuck you." 

Katsuki's face blisters with heat at the coarse language. He chokes on his spit, draping his arm over his eyes to shield himself from the embarrassment he feels. 

"Don't cover your pretty eyes," Kirishima protests, using his dry hand to extract Katsuki's arm from his face. He kisses the pulse point on Katsuki's wrist, sending heat coursing through the rest of his arm. When his tongue runs across the veins, it sends a shiver down Katsuki's spine, and he can't control himself any longer. He reaches for Kirishima's arm, snatching his wrist between both his hands and latches on. 

Kirishima moans as teeth sink beneath the flesh. His head falls back, and he uses Katsuki's distraction to trace his slicked-up fingers down the short length of Katsuki's taint and circles the rim of his hole. Katsuki moans in turn as he drinks his fill. The first finger presses in agonizingly slow, and the gasp that escapes him forces him to relinquish the hold his mouth has on Kirishima's wrist. Teeth marks and blood ring the thin layer of skin and Katsuki looks up at him with clouded eyes. 

"S'that feel good?" Kirishima slurs. He licks his lips, drawing Katsuki's attention to his mouth. Katsuki licks the trail of blood that trickles down Kirishima's forearm, falling victim to how good he tastes, then reaches up, wrapping his fingers in soft, red hair. 

"S'good," he slurs back, capturing Kirishima's mouth with his own. Kirishima lays him out, pumping his finger in and out, stretching Katsuki from the inside. He keens, tasting the saliva of another on his tongue. Kirishima is intoxicating and it's getting even harder for Katsuki to think straight. He's babbling something into Kirishima's mouth as another finger breeches his rim, working him open more quickly. 

Kirishima cocks his head to the side, no fear that Katsuki might drink him dry. He sinks his fangs in again, moaning into Kirishima's throat. He tastes like Heaven on earth and his cock throbs in agreement. Kirishima's saying something, but Katsuki can't hear anything past the pulsing of blood in his ears. He licks the bite mark, sealing the holes closed, then trails his tongue over his lips, catching any stray blood that remains. 

"More," Katsuki croaks. 

Kirishima hums in reply, then there's a third finger inside him, crooking to stroke against his walls. Kirishima flexes his fingers, and a jolt shoots through Katsuki's body, arching his lower back off the bed as he gasps and moans, desperate for more. He hears the words, "Trust me," come from Kirishima's delectable lips, but Katsuki's not entirely sure what he's referring to. He's already put more trust in this stranger than he has anyone else before. 

He nods, thoughts too disjointed to form a coherent answer. 

There's movement, then Kirishima has himself slotted perfectly between Katsuki's legs. He lifts him at the knees, hooking them over his shoulders before pressing the head of his cock against Katsuki's rim. Kirishima says something about needing to breathe, but Katsuki's too far gone for the words to make any sense. He claws at his chest, gripping supple pecks for support before the human is pushing inside him. He gasps, all the air punched out of his lungs, as Kirishima carves his way inside. Katsuki's never felt so full before. 

One hand wraps carefully around Katsuki's lower back, holding him just slightly off the bed for support. Kirishima doesn't stop until he's fully seated within, hips flush against cheeks. Katsuki looks down at where their bodies connect, blinking tears off his dampened lashes. He tosses his head back into the pillows, staring up at the ceiling before shutting his eyes. 

"—Move," Kirishima says, and then he's drawing his hips back. It's a slow drag as he pulls himself almost completely out, before snapping his hips forward again. The motion causes Katsuki to gasp once more, moaning from the pleasure and the way the abuse on his hole continues to force all the air out of his lungs. 

He fans his hand out on his stomach, feels Kirishima inside of him, which solicits a low growl from the man hovering over him. "S'full," Katsuki manages between moans. 

"Beautiful," says Kirishima, before he leans forward, pressing Katsuki's thighs into his chest, and sinks his own teeth into the curve of Katsuki's neck. The moment those pointed teeth press against his skin, he cums again. 

Katsuki claws at Kirishima's back, holding on for dear life as his body convulses within Kirishima's hold. The garbled moan that escapes him tapers into a pathetic whimper. Never had he thought being bitten by someone else—a human at that—would feel as good as it does. He wants the teeth on him more, to bite and consume him endlessly. 

His dick flags slightly and his skin is electric. He doesn't know what this feeling is, but he doesn't want it to end either. There's a hum beneath the surface as he continues to cling to Kirishima, whimpering into his shoulder, peppering bites against heated skin. Kirishima does the same, biting and licking, tracing his tongue over all the sensitive spots on Katsuki's body. 

Time fades away. It could be hours or minutes, all Katsuki knows is that he loses track of how many times he cums. He eventually passes out, whether from exhaustion or overstimulation, he can't say, but when he wakes, it's to a sliver of daylight threatening to incinerate his skin. He hisses, yanking his arm out of the sun's rays. 

Kirishima hums groggily, cloudy red eyes blinking the sleep away as he takes in Katsuki's smoldering arm. "Shit!" he says, moving to close the curtains completely. "Are you okay?" he asks. 

Katsuki blows on his arm, skin blistering pink but otherwise uninjured. "I'll be fine," he says. Morning attempts to filter into the apartment, so Kirishima gets out of bed, making sure all the windows are properly covered. He hangs a blanket up, covering the window above the kitchen sink, then flicks on a light. Tussled red hair hangs limply over his shoulders. His body is littered in scratches and bruises. Teeth marks pepper all his pulse points. Katsuki licks his lips, enamored with how thoroughly destroyed Kirishima looks. He tastes dried blood on his tongue. 

Kirishima chuckles and points to the corner of Katsuki's mouth. "You got a little something…" 

Katsuki goes to lick it clean, but Kirishima leans forward, swiping his thumb over the mess. Katsuki's heart stutters in his chest. It's painfully intimate. "Sorry?" he says, unsure of how to act. His lack of experience continues to be painfully obvious. It earns him another deep chuckle. Kirishima's chest rumbles and he slides back into bed beside Katsuki. 

"It's okay," he says. "That was… wow." Kirishima chews on his bottom lip, buying himself time as he tries to figure out what to say. Katsuki glances at the window. He's stuck here until the sun goes down, which makes for an awkward situation in his mind. 

"Um—" He frowns, pressing his lips together into a thin line before lifting his gaze once more to meet Kirishima's sparkling crimson eyes. "I can't leave, not until…" 

Kirishima's eyes light up. "Oh! That's okay. You don't—you don't have to go. I've never…" he hums. "I'm not really sure what the protocol is with vampires, but I'd rather this not be a one-night stand sort of thing. I'd like to get to know you better." 

Katsuki tosses his head to the side, blond bangs swaying against his forehead as he does. "It doesn't freak you out? Now that the venom is out of your system, I would understand if you wanted me to walk out into the sun." 

"No," Kirishima says a tad too quickly. He reaches for Katsuki's hand, pressing the thin knuckles against his lips. "I'm pretty sure I have the faces you made permanently burned into my mind. Please don't go." 

Katsuki's hand is warm where Kirishima touches and his cheeks flame to match. He doesn't exactly have anywhere to go even if he did leave. He certainly can't return to his condemned mansion in the mountains. "Yeah—yeah, okay," he agrees. He would never forgive himself if he didn't taste that blood again. 

Kirishima smiles, then cups Katsuki's cheek as he pulls him in for an agonizingly tender kiss. "I don't have anywhere I need to be this morning, if you want to keep resting." 

Katsuki's body is already burning, begging for more of last night. His dick twitches from beneath the bedsheets and he shakes his head. "I've slept enough," he says, which is all the confirmation Kirishima needs before he starts suckling on Katsuki's pulse point once more, humming against his throat and sending Katsuki tipping over the edge once more. 

This human is going to be the death of him.