Chapter Text
Katsuki shook his still blood-covered cock when he finished pissing and turned to pad through soft grass back to Eijirou’s patio. He grimaced when he noticed the slab he had thumped as he came. It was cracked to all hell, almost pulverised to powder in the centre, and the slab down from it sported five deep gouges from his claws too.
“Is washing-up liquid okay?” He looked up to see his bride standing naked in the patio doorway, holding out a bottle of yellow liquid soap with a sheepish smile on his face as he scratched the back of his head with his free hand.
Katsuki shrugged and took it with a smile of his own, gaze lingering on the smeared, drying blood all over the redhead as his mouth filled with saliva. God’s teeth, he smelled so good. Like heaven and sin all wrapped up in one handsome package.
He wanted to taste his lips again, but knew that he couldn’t tonight.
He’d chosen to feed instead.
Katsuki pouted to himself, sticking his bottom lip out as he looked upon perfect lips, until they parted to give voice to words.
“Will you be here when I come down?” Eijirou asked, reaching over the threshold of his sanctuary to touch his face.
His skin was so warm.
So alive.
Katsuki closed his eyes for a moment to simply savour the pulse in his bride’s thumb and listen to his heart beat, the sound almost as clear to him as it would be if he laid his head against his chest, despite the distance between them.
“I’ll wait for you, leof, but I shouldn’t stay long. You have work tomorrow, don’t you? You should be bedward soon.” Katsuki took Eijirou’s wrist in his hand, unable to resist the still wet streak of blood on his forearm. He slid his tongue along the delectable drip, closing his eyes as he drew in a slow breath through his nose to savour the scent as his bride gasped quietly.
“Katsuki, your stomach…” he trailed away and Katsuki opened his eyes, following his gaze to look at his own scarred abs.
“Ah,” he registered, releasing his bride's hand to wave away his concern and confusion, “‘tis nothing. I drank a lot, that’s all. It’ll go down when I piss again.” He explained, but Eijirou was already stepping outside, a hand outstretched to touch against his slightly bloated stomach as he stared. Katsuki hissed in a breath at the warm, gentle touch, placing his hand over the back of his bride’s with an amused snort. “Have you never eaten a big meal, sweet? It’s the same thing. I just…digest much faster than humans.”
“Yeah but…I dunno, you’re always so trim and lean…” Eijirou’s eyes were focused on Katsuki’s stomach as he smoothed his hand over it once more, before he flushed and stepped away. Katsuki swallowed thickly at the rush of blood to tanned cheeks. No blood had ever been so tempting before.
Nor as forbidden.
He wanted it so badly it was an ache within the base most part of him; a gnawing hunger that no amount of blood would assuage. He knew it was because his instincts wanted him to turn the redhead, to make him his true bride, but it didn’t ease his fears of hurting him. Of him somehow not rising after the turning.
The fear was baseless, foolish, but there none the less.
Shota Aizawa had turned Katsuki with little more than a few mouthfuls of his blood, dripped into his gasping mouth as he bled out in a field filled with his fallen brothers in arms, and he had risen like any other turned before and since him.
Maybe he should ask Aizawa to turn Eijirou instead? He knew his blood would work without question, it had brought him back from a truly horrific death.
Though the thought made his fresh blood almost boil.
“What’s wrong?” Eijirou’s voice cut through Katsuki’s thoughts and he shook himself quickly, giving a reassuring smile as he told the redhead it was nothing and to go bathe, before stepping away to lift the end of the now leaking hose.
Katsuki hosed himself down first, standing on the grass to let the blood drain away into the soil, nourishing it. He increased the water pressure by turning the nozzle and aimed it at the patio slabs, washing the majority of the blood over the step and into the grass too, before squirting the liquid soap to rub in with the sweeping brush he found propped up in the corner where house met fence. He left the slabs foamy, to be rinsed the next morning, unsure whether the soap would wilt his bride’s well looked after lawn.
Eijirou padded barefoot and towel clad to the back step almost ten minutes later, as Katsuki pissed once again into a geranium bush at the far end of the garden. He heard the redhead chuckling and glanced over his shoulder, breath catching in his throat at his bride’s wet skin, given an almost treasure-like golden glow by the soft yellow light from the lamp in the corner of the room.
“My garden isn’t a toilet, you know.” He admonished without heat, holding out the red towel he had just been rubbing at his hair with, in offering.
Katsuki sucked his teeth as he walked to take it, towelling his own wet hair and skin dry, standing on the slabs closest to the wall that hadn’t been splattered with blood. “I can’t use the privy in your house, where else am I supposed to go siege?” He asked rhetorically with a raised brow, smiling smugly when Eijirou opened his mouth and lifted his finger, tilting his head in thought for a moment, before conceding the point.
Katsuki wanted to stay longer, but after ten minutes of chatting either side of the threshold barrier, Eijirou shivered and yawned, and Katsuki stood immediately. “Sleep,” he instructed firmly, already unzipping the jeans he had donned to sit on the stone floor, shoving them down his thighs and off, before folding them to hold out for his bride to take. His boxers were currently in the non-recycling bin, soaked with blood, and he hadn’t bothered putting his shirt back on.
Eijirou stared at his naked body, sucking his bottom lip between sharp teeth for a moment, before slowly nodding without making any move to rise from his living room floor. Katsuki found himself oddly proud, despite the fact that his death scars were on display.
After a chaste kiss to the cheek that sent an electric shiver down his spine, Katsuki transformed. He flapped around a little and hung upside down from Eijirou’s hand as the redhead scratched the back of his head and smiled down at him, before taking to the sky with one last squeak of goodbye.
He heard his bride laugh when he swooped to snatch a small moth from the air on his way over the back fence and grinned internally, flapping higher and away as he heard the distant sound of the glass door sliding shut.
Katsuki ate several more bugs on the way home, veins singing and eyesight even sharper than usual with his fresh feed. He’d finished off the last of the blood before throwing away the plastic jug, but he knew he would need human blood tomorrow, lest he become truly hungry.
He squeaked, annoyed, when he flew up the hill to his driveway and saw a familiar figure stood on his doorstep, rattling keys noisily and trying to get in his house. He dove down, flapping and scratching at a leather clad shoulder and motorcycle helmet as the man dropped his keys to flail his arms.
“K-Kacchan?! Get off- oh my g-” a hand smacked into Katsuki and he hissed, flying up to hang from his porch cladding, ruffling his wings as he glared and showed his fangs. Izuku Midoriya took off his helmet as soon as he realised he was no longer being assaulted and frowned up at him, scruffy freckled face lit up by the automatic porch light as he huffed a breath and shook wild, shoulder length green curls out of his eyes. “Really?” he demanded, clearly exasperated when Katsuki simply squeaked at him again, bending to pick up his keys and unlock the door. He left his helmet on the step, grabbing a large gallon jug of blood and a cool bag instead, before walking inside uninvited.
Katsuki followed immediately, transforming halfway down the hallway as the human closed the front door with a soft click. He stretched his back to crack his spine, before walking straight through to his spacious living room, naked.
“Hey, there’s blood on your back, what happened?” Izuku asked from behind him. Katsuki grabbed a pair of abandoned sweatpants from the single seater and donned them; he often simply transformed rather than bothering to get undressed the slow way.
“I drank. Couldn’t wait.” Katsuki answered simply, pursing his lips before heading from the room and up the stairs to retrieve himself a tunic.
He opted for a tank top instead and when he came back down it was to find Deku in the kitchen, sliding the jug of pig blood into the bottom shelf of the refrigerator. He was a big man, almost as tall as his bride and just as muscular, but that’s where the similarities ended. Izuku was paler, covered in freckles and vicious scars. It looked like he hadn’t shaved for a month again too, and he could probably do with a haircut.
“You look like a hedge-born ceorl.” Katsuki pointed out, and Deku glanced over his shoulder, unimpressed by the insults.
“It’s a look, Kacchan, I’ve told you before. Not everyone was nobility, you know, and you’re not in charge of me now. Oh wow, you drank a lot, huh? Was it human?” Izuku asked when he noticed the black in his eyes. He closed the refrigerator door and opened the square green cool bag on the kitchen counter, lifting a blood bag with scarred hands, before turning. “Should I just put this in the fridge, then?” He asked, but Katsuki was already across the large kitchen in less than a second, snatching it from him.
He tore the corner off with his teeth and spat it to the floor, before squeezing the bag like a juice pack as he gulped.
It was Deku’s blood again, Katsuki noted instantly at the almost grassy undertones. He fought a roll of his eyes even as he turned and walked to stand over the bin in case he dripped any. It wasn’t usually a problem with a transfusion bag though, and in less than a minute he’d finished the entire unit of blood, only losing a tiny trickle.
Katsuki took a grateful breath, head tilting back on his shoulders after dropping the bag into the trash uncaringly. He licked his lips clean greedily. “By my troth, you’re a goddamn fopdoodle. Did you at least wait long enough this time?” He demanded as he straightened, wiping the back of his hand across his mouth and chin, before crossing to the one cupboard in his house that actually held human food. He grabbed chocolate, biscuits and whatever else he’d thrown in there last time he went shopping, before tossing them to his idiot friend slash charge. “Eat. I’m not having you pass out on me again,” he demanded, grabbing a canister of granulated coffee and a box of sugar cubes, “stupid, reckless kid,” he grumbled under his breath as Midoriya obediently unwrapped a chocolate bar with a roll of his eyes.
“Thirty five is not a kid, Kacchan. And it’s been three months, you can give blood every three months, you just don’t know how to guess time because you’re old as hell,” he retorted as he chewed, taking over filling the kettle when Katsuki smeared blood on the jug. “Wash your hands, that’s so gross!” He demanded, tossing the jug into the sink and picking up the electric kettle to take to the tap instead.
“Still always gonna be that weedy little nerd I met twenty years ago.” Katsuki grumbled, pumping hand soap into his palm. “Did you bring the babies mealworms?” He asked as he dried his hands, already moving to check the cool bag. He plucked up a plastic tub from the local pet store and grabbed a pair of plastic silicone tipped tweezers, before stalking straight outside without saying thank you.
Katsuki grinned as soon as he stepped out into his manicured garden when several bats flew to perch and cling to his shoulders and arms, one settling right into his still damp hair, little claws scratching at his scalp. “You can hunt your own food,” he admonished lightly, setting down the winding gravel walkway to the far corner of the garden, past the large pond where midges and mosquitoes met their fates in white night lights as several more bats swooped down over the water to snap them up.
Katsuki stopped at the lowest bat roost boxes in his garden, set around two thick wooden poles only ten feet tall. His maternity roosts. He shooed the bats from one arm to grab a set of wooden A-frame ladders and set them up, before climbing without needing to use his hands for balance.
Katsuki heard the back door open and close as he gently pulled one of the bat boxes open to reveal two mothers and four still tiny pups. Bats usually only carried one pup at a time, but one of them had birthed three, and two of them weren’t getting enough nourishment, though they were old enough now to eat real food.
“You look like you kissed the hare’s foot again.” Katsuki chuckled as he cracked the lid on the tub of mealworms and the pups shuffled closer on their perch, clearly excited. “Let me feed your mommas first, they’re doing their best,” he said gently, lifting a grub with soft tipped tweezers.
After an uneventful but adorable feeding, Katsuki closed the last but one bat box on the second maternity pole, finally opening the last. He frowned, sniffing as the scent of distress reached his nose. “Deku, get a shoebox and the puppy formula ready!” He called over his shoulder, hearing the human immediately stand and rush inside to obey.
Katsuki shrank his claws and very gently eased the tiny, rejected, pup closer to the edge of the roost box with his little finger. The mother shifted with her second newborn pup securely in her tail pouch. He tutted and offered her a mealworm as he waited for Midoriya, hearing him hurrying down the gravel path a couple of minutes later.
He turned and handed over the box of grubs in exchange for the soft cloth held up for him, swiftly but carefully scooping up the baby, before closing the roost and hopping down effortlessly from the ladders, barely even making a sound when he landed.
“Only one so far this year is good, at least,” Deku commented mildly as they walked into the living room and over to the dining table, where there was a shoebox with holes cut in the lid atop a heat pad; puppy formula and box already open and ready beside a stack of hand towels and elastic bands.
Katsuki hummed as he set the pup down in his little cloth swaddle to pick up the smallest teat and feeding pipette. “You can feed him, he’s a little too chilly for me to be handling at the moment.” He pouted, carefully sucking up formula and squirting it into the feeding teat.
“Gloves? Or is he fine?”
“Smells fine to me. The mother is just getting a little old, she probably felt she couldn’t handle two pups this year, so she chose the stronger one,” Katsuki elaborated easily, picking up a hand towel to fold and then roll up, before securing one end with an elastic band, making a stand in ‘mommy pouch’. “Just be careful with your big clumsy ass hands, cumberworld.” He instructed, earning a slightly insulted huff.
“I’m not useless, thank you very much. I’ve been doing this since I was eighteen, I know how to feed a bat,” Izuku grumbled, picking up the still cloth-wrapped pup, “or are you trying to say you taught me wrong?” He challenged, knowing it would bristle the fine hairs on the back of Katsuki’s neck.
He hissed, annoyed, but tiny high pitched squeaks stopped him from flicking Izuku on the head to rattle his brain, and he moved instead to lean over and pluck up a cotton bud to wet with warm water.
“He’s hungry, Deku, get a move on,” Katsuki growled instead, handing over the cotton swab and the feeding teat. “Guess this means you’re taking the day off tomorrow, I can’t open the door for the bat rescue idiots during the day,” he said as he turned to look for his phone.
Where in the hell had he put it this time?
He found it on the beanbag, dead once again, and put it on charge as Midoriya carefully held the tiny, still hairless pup to feed him, wiping his chin with the cotton bud carefully.
“I can feel his belly growing on my thumb,” the human chuckled, green eyes focussed on the pup as he eased the teat out of its mouth and replaced it with the end of a clean eyeshadow applicator, before wetting it with a few more drops of milk for him to suckle on.
Katsuki snorted as he crossed back to the table and opened the makeshift towel pouch, while Deku cleaned the pup after it pissed on the paper towel in his hand. They tucked him away and set him in the box, and Izuku rose to go wash his hands.
“So, did you only come to bring me blood, or were you hoping I’d still be out so you could sneak into the basement?” Katsuki asked blatantly, crossing to the mahogany display cabinet to retrieve two crystal cut glasses and a bottle of vodka. He poured himself an entire glass and the human two fingers worth, before putting the liquor away.
Midoriya averted his gaze as he walked back in, drying his hands on his jeans. “Well you only check on him once a month. I like to make sure the freezer is still working, that’s all,” he mumbled as he took his glass and sipped, looking suddenly much more like the put-out eighteen year old he used to be when he was told off, rather than the big, stubbled man that actually stood before him right then.
Katsuki sighed, walking away from the idiot human to sit in his leather wingback chair, and Izuku followed to sit on the antique love seat he’d bought in a secret auction in the eighties. “That’s a lie and we both know it. He’s not a ‘mysterious elf prince’, or whatever you called him the first time. I’ve told you a thousand times, he’s dangerous, Deku.” He sipped his vodka and picked up the remote, turning on the television and flicking through to the classical film channel. “‘Tis thy favourite.” Katsuki commented pointedly, the corner of his lips curling up in a small smile when Midoriya flicked his gaze to the screen and smiled too.
“I watched your old copy until I wore it out when you first took me in.” Deku chuckled, taking a sip of his vodka as he lifted a booted foot and set his ankle on a leather clad knee, settling back in the burgundy loveseat to watch.
The nineteen thirty one Dracula movie picture played in black and white on Katsuki’s flat screen television, as he turned the volume almost all the way down and tossed the remote to the beanbag beside him.
Twenty years ago Katsuki had taken a stroll along the beach one night, visiting Japan again for the first time in almost eighty years, enjoying the crashing waves and rolling clouds as he walked barefoot through sand, until he heard the distinctive sound of sobbing.
Rolling his eyes he turned to walk back the way he came, when a choking, pathetic whisper of, “why?” reached his sensitive ears and he realised it was a kid. Sighing, he followed the sound, knowing that there were far worse things concealed by the darkness than a slightly peckish vampire.
Katsuki found a short, scrawny kid with dark hair doing push-ups as tears dripped from his face into the sand. He might have been about fourteen or fifteen, but he was definitely small for his age. His helpless despair was almost palpable in the salty air, and Katsuki pursed his lips as he silently approached and sat down in the sand a few feet away, putting his shoes back on to hide his black, claw-like toenails with another sigh.
“You know, there are dangerous people around at night,” he pointed out, crossing his legs and leaning his elbows on his knees as he tried to figure out how to get the kid off the beach and back home.
He could always scare him away, if it came to it.
Katsuki tried again to get the little shit to answer him, but he was ignored as though he wasn’t even there, and it pissed him off.
There was a phone abandoned in the sand nearby, a veritable ‘brick’ compared to what they were now. He shifted and snatched it up in the blink of an eye, and the young human gave a surprised shout and toppled to the side, scrambling to sit as he stared through his tears, cataloguing pale skin and glowing eyes as Katsuki glared down at the device and clumsily opened up the contacts to look for a parent’s phone number on the pixelated screen.
A panicked woman answered after two rings. “IZUKU!! Where are you?? I’ve been worried sick! Please come home baby, I-”
“This isn’t your son. I found him on the beach, crying like a babe. Come fetch him, before he gets kidnapped or some other vile thing.” He put the phone down and tossed it uncaringly, turning to walk away as he shoved clawed hands in his long, black woolen coat.
Dumb humans.
“W-wait!” He stopped at the sound of scrambling feet and kicked up sand, rolling his eyes before glancing over his shoulder.
“What?” He clipped shortly, but stepped away when the still blubbering kid got too close. “Wipe your nose, you scruff,” he demanded, nose wrinkling in distaste.
“S-sorry!”
Katsuki nearly had an aneurysm when the teen lifted a forearm to bring it to his nose. “Stop! That’s disgusting, here-” he opened his coat and plucked the handkerchief from his suit jacket, handing it over.
The kid -Izuku?- took it, huge green eyes still staring as he wiped away his tears and blew his nose noisily. He took a few calming breaths, before words began to spew from his mouth like vomit. “Thank you, sir! I wasn’t running away from home or anything, I just really needed some time to process. I just found out my dad is dead, and my mom took on his debt, and I’m too young to work a proper job. I don’t know what to do, because debt collectors are scary and I just wanna be able to protect my mom, but-”
Half panicked, Katsuki held up a hand to silence the boy. They stared at one another for a long moment, before he sighed, defeated. “I’ll walk you home, fopdoodle, come on.” He turned and headed for the concrete steps that led to the promenade without waiting for confirmation, hearing ‘Izuku’ snatch up his phone and follow quickly.
“What’s a Fopdoodle? You’re not Japanese, are you? Where are you from? Why are you dressed like that, mister? Are you-” the kid gasped, “-wait, are you yakuza?? No one wears a suit and hat to the beach…” he devolved into slightly panicked muttering, and had he been able, Katsuki knew he would have gotten a headache.
“What’s wrong with the way I’m dressed?” He groused, looking down at himself. He looked smart, and he was pretty sure a suit was always fashionable now.
He stepped ahead, ticked off.
But apparently the annoying kid simply didn’t know how to shut up, and both his brain and mouth worked a mile a minute. They walked slowly through practically abandoned streets as Izuku Midoriya -he finally told him his full name- muttered and asked Katsuki a million questions, before stopping suddenly to ask him if he was a spirit, staring at his glowing eyes as he took a step away.
Katsuki simply rolled his eyes. Japan had no native legends about vampires, but he knew western tales and cinema had brought the idea there in the nineteen fifties, or somewhere around then. Shouto Todoroki had told him so, before asking him to visit for a couple of decades so that he could ‘take a long nap’.
Todoroki was an ancient Japanese vampire, turned by a visiting foreign noble well over a thousand years ago, and he hadn’t appreciated the ‘gift’. He had immediately killed his sire upon waking, draining the woman before also draining every one of her retainers on principle.
Katsuki was one of the only people not actually afraid of the man.
“If I was a spirit I wouldn’t have been able to touch your phone, stop being stupid,” he grumbled, stepping ahead once more.
“But your eyes, and your nails, and you’re so pale…” warm fingers suddenly touched the back of Katsuki’s hand. He snatched it away and hissed, but Midoriya’s mouth was already hanging open as he gasped up at him. “A ghoul.” He whispered, taking a step back.
“I’m not a fucking ghoul, you fat-kidney’d lout,” he snapped without meaning to. Midoriya squeaked but didn’t turn and run, curiosity apparently keeping him rooted to the spot. Or maybe it was the two sharp, very obvious, fangs on display as he bared his teeth angrily.
Katsuki quickly closed his mouth and turned away. “Forget you ever saw me. That’s the last time I do anything nice for a human.” He grumbled, walking away.
Midoriya rushed after him, shouting for him to wait once more. “Are you a vampire? Like in the old Dracula movies?” He asked, eyes wide and mouth hanging open in awe as Katsuki stopped once again to groan his annoyance.
“Does it fucking matter?” He asked, exasperated, before cracking his neck and looking around, preparing to transform and ditch the kid. It’s not like anyone would actually believe he’d seen a man turn into a bat nowadays anyway.
“IZUKU!!” Katsuki tensed as the voice from his very brief phone call echoed down the street, and he turned to see a plump woman with black hair jogging towards them with tears streaming down her face.
“God's teeth, I don’t need this shit.” Katsuki growled as the woman barrelled into her son, sobbing profusely. He turned to leave as she choked harder and called for him to stop.
“Wait! Please wait sir! How can I thank you?? Please come to my house, I’ll serve you some tea!” She offered hurriedly and Katsuki froze as the invitation zinged through him and his mouth flooded with saliva.
She had just signed over her life without even knowing. And her son’s life too.
Stupid humans.
“Wh- mom, did you just invite him into our house…?” Midoriya asked quietly, trailing off as Katsuki slowly turned on the spot to look at them.
Two sets of green eyes stared at him as he debated internally, before shaking his head, stepping away. “No. I’ll get a drink elsewhere…but thank you,” he said at length.
“No, I insist! Anything could have happened to him, please let me thank you properly.” Midoriya’s mother released her son to bow low, and Katsuki swallowed thickly, before finally nodding.
“I’ll…have a glass of water. I don’t drink tea.” He said grudgingly, knowing the second he stepped over that fucking threshold he was going to obsess over the stupid woman’s blood until he finally caved and fed.
He’d never actually killed any of his meals, but an open invitation was hard to resist. It was why he had immediately warned Eijirou not to let him into his home, even as he demanded to be let in with the next breath.
The second Katsuki saw their shitty little apartment, he cursed himself again, sitting at the worn wooden table in the kitchen, gripping his glass of water so hard it cracked as the woman chatted happily to him about everything and anything, before quickly downing the entire drink and leaving abruptly.
The next night he posted one million yen through the letter box and went straight to Todoroki’s house to bitch about the ‘Dekus’ as he dubbed them after seeing their last name written next to their front door. And a day later he was back to complain again.
“I could kill them for you? They’d be out of your hair then.” The heterochromatic vampire offered, before looking at his fingernails, the picture of blasé.
“What part of ‘I died a fucking Knight’ do you not understand, lout?” Katsuki growled, annoyed, before sighing. “She’s really kind. The kid’s annoying as fuck, and he’s got this weird obsession with superheroes, but he’s not the worst thing ever either.” He grumbled, sticking out his bottom lip to pout. “Feels like naming the pig you’re gonna eat next year, you know what I mean?”
“Can’t relate, I named a lot of the animals I ate when I was alive.” Todoroki shrugged, before pouring two glasses of blood from a silver jug.
It was human.
“That’s because you’re a fucking psychopath,” Katsuki growled, even as he took the offered blood to chug.
“I’m not. I just got sick of people. There’s only so much a person can take, before homicide is the preferred coping mechanism.” Shouto sipped his drink and licked his lips. Shouto wasn’t bound by the need to ask permission to drink from a human, and he took full advantage of that fact. Neither of them knew why that was, but Katsuki’s best bet was that the vampire that turned him hadn’t asked his permission to turn him, and it made him genuinely dangerous. “I love a glass of yakuza in the evening.” Todoroki commented pointedly, smiling ever so slightly as Katsuki’s brows shot up.
“Is it one of the ones the woman Midoriya owed money to?” He asked, looking at his empty glass for a moment, impressed despite himself. He’d only told Todoroki about it the night before, after fleeing the human’s home.
“One of them, yes. Just one of the bone breakers though. Give me a week or so to get the rest, I’m not a glutton.”
“You are.” Katsuki retorted immediately, even as he reached for the jug to pour himself more. He couldn’t allow himself to drink his fill often.
Shouto Todoroki picked off twelve people is as many days, eventually taking out the head of the gang last as Katsuki continued to try and stay away from the Midoriya’s, before caving and telling them to move county angrily on the eleventh night as Inko opened the door, surprised that he was back at her house again.
The fopdoodle Izuku had emerged from his room with a blood bag and a canular in his arm and they had both freaked out, Katsuki storming over to the kid to take the thing out of him, even as he salivated and Inko cried, not understanding any of it until her son shouted that he was a vampire and not to ‘be mad’ at him.
It was a shit show, honestly, but once again the Deku’s proved themselves to be both stupid and far too trusting, as their name suggested, actually thanking Katsuki for helping them, despite the fact that he had essentially sicked a wild dog on a group of real live humans to do it.
Inko had then filled a blood bag for him, after Izuku finally found her vein, and told him to simply ask whenever he needed more, because she ‘didn’t mind at all’.
Katsuki had never really understood the Midoriya’s, but they were sweet, if not recklessly dumb, and he grew genuinely fond of them.
But one night, when Izuku was eighteen, Katsuki’s phone rang and he picked up, only to feel his forever still heart plummet straight through the bottom of his stomach when the kid choked wetly and gasped down the phone. “My mom. Turn my mom! We’re…” he spluttered out the road they had crashed off of, before hacking, clearly coughing up blood.
Katsuki bolted out of his house, running there faster than he could have flown in bat form, until he came upon the deserted road and the wreckage. It was icy, pitch black to any human, and the street lamps weren’t working.
It absolutely stank of blood.
He ripped the drivers side door off instantly, phone to his ear as he called an ambulance. He wanted to be able to save them both without turning them, but Inko grabbed his face weakly, coughing blood as she shook her head. “Just save him, I’m gone. I can feel it. Just save my baby,” she begged, tears streaming down her face as her arms fell limp at her sides a moment later and her head slumped forward.
“No! Fucking no!” Katsuki shouted as he dropped her and leapt over the car, ripping the passenger door off and tossing it aside. “Don’t be fucking dead, I swear to the lord-” he growled, biting into his wrist and shoving it straight against Deku’s lips as he dragged the boy out of the car. “Stupid fucking Dekus.” He cursed almost pathetically, massaging his charge’s throat to make him swallow, hunched over his limp body.
Katsuki had never turned anyone before, but Izuku’s mother’s dying wish was for him to live, and fuck if he didn’t want that too. He’d gone centuries trying not to get too close to humans because they always fucking died on him, and he’d be damned if he let this one pass on too.
An ambulance arrived just as green eyes cracked open weakly, and Katsuki transformed, flapping away as flashing lights and sirens blared, coming to the rescue.
Izuku didn’t die with Katsuki’s blood in his system, so he never turned, but Katsuki took him in and paid for him to go to college, stepping in as a parental figure, despite being so removed from being human that a simple cold now threw him off.
He dealt with Izuku being sick and sad, he dealt with his first proper crush, and the tears that inevitably came from his first break up, he dealt with it all.
And now he was dealing with the fact that his pseudo-son was thirty five years old, and maybe going to die because he couldn’t stay away from the vampire he had locked in a freezer in the basement.
Fucking humans.
Deku yawned as credits rolled up the screen, before flopping to his side on the love seat. “Do you have ice cream?” He asked sleepily, and Katsuki bristled.
“You fall asleep there and I’m not carrying your dumb ass upstairs, you got me?” He growled, but his charge simply grumbled and rolled over, tucking his legs up and digging his booted feet into the arm of the chair,
“Just get me some ice cream, you big meanie.”
Katsuki bared his teeth as he rose and crossed to yank Midoriya up by the ear to get his feet off the furniture. “In what world do you think I’m ‘just’ gonna get you ice cream, you little shit?” He demanded, annoyed, but Deku smacked his hand away and rose to his feet, expression unimpressed. He was so much taller than him now.
“Fine, fine, I’ll get it myself,” he pouted, before pausing. “I do appreciate you, you know.” He said quietly, before leaning down to pull Katsuki into a hug, scruffy beard brushing blond hair.
Katsuki bared his fangs, rolling his eyes even as he hugged back briefly. “Dont be a fucking sap,” he admonished, pulling away. “Humans are so weird.” He muttered, but Midoriya chuckled.
“You’re the dad I never really had, yanno.” He pet Katsuk’s hair before walking from the room, and Katsuki growled again.
“Don’t act like I’m younger than you, shithead.” He snapped.
“But you are though? I mean, technically anyway. I’ll be older than you forever now; I’m excited for my next birthday. What’s your bride like? Is he dad material too?” Deku chuckled as the sound of the freezer opening rang through to the living room.
“I won’t turn you at all if you don’t stop being a brat,” Katsuki grumbled as he walked into the kitchen.
“But how else are you gonna give your bride flowers?” Izuku teased, already jamming a spoon into a tub of chocolate fudge brownie to take a bite. Had he used the ‘microwave’ to soften it?
Katsuki smirked. “I already sent him some, without your help. I found another florist in the area.”
Deku choked indignantly, yanking the spoon from his mouth. “WH- WHY THOUGH?? That’s- that’s so mean?! Do you know how expensive it is to rent that place?? I just wanna sell flowers and make people happy, why would you go somewhere else? I’d have given you a discount and everything! You were the one that was all like ‘earn your own money, fucker’ I can’t believe you!” He spluttered.
Katsuki rolled his eyes and pointedly yawned, earning a glare from his charge. “I told you to earn your keep, not that I’d actually use your business. Besides, I paid for your business degree.”
A spoon wagged before his face as Izuku frowned. “Nope. How many gallons of my blood have I given you so far? You looked after me, but I fed you too, so don’t even start with that shit, grumpy old man.”
Katsuki opened his mouth to argue, but stopped short, pursing his lips instead before sighing and averting his gaze. The kid had him there. “You’ve always been a brat, you know that, right?” He grumbled under his breath.
Izuku smiled. “Yep. But you love me anyway,” he stated, no shadow of doubt on his face as Katsuki huffed, exasperated.
“I’ll never say it out loud though,” he said flatly, and Izuku smiled at him again, throwing himself back down on the loveseat when they moved back into the living room.
“I think you did once, maybe my twenty fifth birthday? I was super happy.” He ate another spoonful of ice cream, “what did you say your bride’s name was again?” he asked lightly, and Katsuki narrowed his eyes.
“His name is Eijirou Kirishima, why? Actually, I don’t give a fuck, just brush your damn teeth before you go to bed.” Katsuki growled, before transforming.
“Wh- Kacchan, don’t fly away, I was just asking- aaand he’s gone. Awesome.” Izuku sighed.