Work Text:
Okay, listen. Katsuki wasn’t an unreasonable guy. An unbearable asshole? Maybe. A complete dickhead? Yeah, definitely. But unreasonable he was not. And alright, ever since Deku’s little vampiric confession, he had maybe been thinking about him a lot more than before. But could you really blame him?
The nerd had been cute before his transformation. But now that Katsuki knew the timeline, he realized that around the same time he had been changed into a vampire, he had also turned into an ethereally beautiful creature. His normally tanned skin had gotten paler, making his freckles stand out more. The paleness contrasted with his wide green eyes and dark hair, causing the rosiness of his lips to be even more distracting than usual. Something about his new diet had changed his facial features too, because the baby fat that had been covering his jawline melted away into something truly sinful, although he still had the slightest bit of chub on his cheeks. Just enough for Katsuki to be able to bite them.
And yeah, maybe Katsuki had been thinking about Deku like this for a long time now, but lately it had been so much worse. Most likely because he now knew what Deku looked like just after drinking his blood; slightly drunk, his eyes hazy and so, so dark, like he’d just gotten nectar from the gods rather than Katsuki’s blood. And while the sight of that pipe sticking out of his stomach had been horrifying- nay, nightmare inducing- Katsuki just couldn’t get the nonchalant way he yanked it out of him out of his fucking mind .
So yeah, sue him. He’d been having dirty fantasies about his childhood friend way more often than he usually did, which was kind of saying something. While the rest of Class 2-A had been wary around him for weeks after his confession, Katsuki had pretty much taken it in stride. In all honesty, he’d known something was wrong with Deku for months before that. He knew the nerd way too well to not realize when something was up, the same way Deku knew when something was going on with him.
Which was really fucking inconvenient, because he had now been bugging Katsuki about his strange behavior for weeks.
“Are you sure you’re alright, Kacchan?” The little nerd questioned, hovering over Katsuki’s shoulder as he stirred the pot of curry for their class’s dinner that night. Literally hovering, because ever since he’d gotten a hold of his quirk Float , he’d been using it whenever he could to fine-tune it. He’d done it with Black Whip , too, having used it for weeks to do menial things, like write notes in class, or pass dishes across the dining room table during their morning breakfast and afternoon dinners.
“I said I’m fucking fine!” Katsuki snarled, elbowing Deku in the stomach. Deku wheezed a bit, lowering himself back to the ground and his usual height about five inches shorter than Katsuki. Something about his small stature did it for Katsuki, not that he would ever admit it. “Stop asking already, damn it!”
Deku pouted at him in the most adorable annoying way, his eyes turning puppy-like. “But… you’ve been acting weird for weeks. Ever since…” he trailed off. They both knew what he was talking about.
In the other room, Katsuki could hear his classmates cheering and hollering. They were playing some video game while they waited for Katsuki and Deku to finish making dinner. The two of them had come up with a system months ago though, because Deku was truly terrible in the kitchen. Katsuki made the food, and Deku washed the dishes. It was a fair trade that they both accepted.
“It’s not about that,” Katsuki sighed, staring down at his curry. ‘ My, how interesting. Never seen curry like this before. Nope.’
“But it’s something,” Deku needled, turning to lean against the counter next to the stove. “And if it’s not about my, um, non-human status, then what else could it be?”
Katsuki ripped the wooden spoon out of the pot of curry and slammed it down on the counter, turning his head to glare at Deku again. “Can you just fucking drop it already? Maybe I don’t want to talk about it, shithead!”
Deku scrunched his nose, glancing at the curry sauce dripping onto the counter. “Maybe not, but I also don’t feel like getting dragged to Ground Beta in the middle of the night to fight it out.”
“That was one time . You apparently don’t fucking sleep, anyway!”
Izuku tilted his head back to look at the ceiling, as if he was asking the gods why they had saddled him with Katsuki’s shitty ass. ‘ I’m wondering the same thing, dick head.’ When he met Katsuki’s eyes again, his own were glowing slightly, the green irises luminescent even under the bright kitchen lights. Whether it was his quirk or his “non-human status,” as he’d so eloquently put it, Katsuki didn’t know. “This isn’t over, Kacchan.”
With that, he flounced out of the kitchen to join their classmates in their video game battle. The tension in Katsuki’s shoulders eased once he was finally alone, and he took a shaky breath. He could still slightly smell Deku’s scent around him, like woodsy cologne and coconut conditioner. He closed his eyes, imagining for a moment telling Deku the truth. ‘ Yeah, don’t mind me, I just can’t stop thinking about fucking your perky little ass while you suck my fucking blood. Oh, sorry, didn’t mean to ruin our friendship!’ Yeah, right.
This was so fucking hard. He glanced down at his loose sweatpants and winced. It wasn’t the only thing that was hard, apparently.
(x)
Izuku leaned over the back of the couch, watching the screen. Kirishima, Tokoyami, Satou and Asui were playing super smash bros while the rest of the class cheered them on, calling their next turns. Uraraka sat on the couch in front of Izuku, at the perfect height for him to rest his chin on her head and wrap his arms around her shoulders. Perhaps in their first year he would never have been able to do that, but they were much more comfortable in their completely platonic friendship now that she knew he was in love with Kacchan, and that she was in love with Mina.
Uraraka winced a little bit when his cold skin touched her collar bone, but she still reached up and hung onto his wrists. She turned her head slightly so that he could hear her better when she whispered. “No good?” She asked.
He huffed out a sigh, shaking his head a bit. “No,” he muttered. “He still won’t admit it.”
“I’m sorry, Deku-kun,” Ochako apologized, patting his arm. “Is it possible you’re overthinking it? Maybe he really doesn’t have a problem with it!”
“I can’t think of anything else it could be!” He whined, fully aware that he sounded like a whiny child. “Nothing else had happened in the past few weeks, after all!”
Ochako hummed a bit contemplatively. On the couch next to them, Sero tore his attention away from the screen to look at them. They apparently hadn’t been quiet enough for him to not overhear. “Are you guys talking about Bakugou’s weird behavior?”
“Yes,” Ochako answered before Izuku could deny it. “Deku-kun thinks he has a problem with his whole ‘undead’ thing.” She waved one of her hands around in the air, like that somehow symbolized his vampiric-ness. Izuku muttered a few expletives that sounded suspiciously like “filthy traitor.” Sero’s eyes softened.
“I’m sure that’s not it,” the black-haired boy said. “I mean, maybe he just needs to adjust! I know it took me a little while to accept the existence of other beings out there.”
Izuku sighed again, tilting his head down so that his nose was buried in Ochako’s hair. She smelled like strawberries, and it was always comforting for him. Not as comforting as the smell of singed caramel, but comforting all the same. “Yeah, but it’s been two weeks! I would have thought he’d accept it by now. Everyone else did!”
Sero shrugged. “Yeah, but we’ve only known you for like, a year and a half. He’s known you your entire lives. Maybe that has something to do with it. Or maybe he’s just pissed that you’re getting ahead because of it, who knows?” He shrugged one shoulder. “I’m sure if it’s a real problem he’ll come to you. He always does.”
Izuku bit his lower lip. “Maybe…”
Before either of his friends could reassure him more, Kacchan came stomping out of the kitchen. “Oi, dinner’s ready extras!”
Those playing the game groaned, but still hit the pause button. Everyone began to shuffle out, Izuku trailing behind them all. One relieving part of this whole situation was that he no longer had to pretend to eat human food around his friends, and then throw it all up back later. It also meant there would be no more garlic scares, thank god . That had been one shitty night. It also meant that Izuku would never get to taste Kacchan’s spicy curry again, which made his chest constrict in sadness.
As he passed Kacchan on his way to the table, he caught a whiff of the boy’s blood pumping underneath his skin. His mouth began to water, and he swallowed hard before he quickly looked away. He’d certainly like to eat something else of Kacchan’s, but it definitely wasn’t food. His fangs began to prick at his lower lip, and he realized that it had been two weeks since he’d last gotten any blood. His limit was two weeks before he began to succumb into blood lust, a feral state where he would bite anyone that he came across.
Hovering over his chair, he glanced around the room. His friends were coming back into the room with bowls of curry, laughing and chatting with each other. The last thing he wanted to do was ask any of them to let him feed off of them, and risk making them uncomfortable.
Ashido noticed his hovering after a moment and raised an eyebrow questioningly. “Midori, are you gonna sit down?”
The last of the class filed into the room, looking at him along with everyone else. Kacchan took his usual seat right across the table from Izuku. His bowl of curry was a distinctly different colour than everyone else’s, likely from the massive amounts of spice he’d added in. Izuku cleared his throat and took a step away from his chair. “Um… I just realized that I, uh. I have to eat, too, so…” he took one more step back. “It’s probably best if I’m not… around you all. Right now.”
Kaminari blinked up at him. “Bro, do you like, need one of us?”
Izuku stared at him, slightly open-mouthed. He could feel his fangs had completely dropped from hunger, as well as Kaminari’s offer. Kaminari had one of the most deliciously-smelling blood in 2-A, due to the power level of his quirk. Izuku would love the chance to feed off of him, or Kacchan, Todoroki or Yaomomo. They were all looking at him expectantly, like… like they wanted to help him.
“Yeah man, I’ve been meaning to ask!” Kirishima said, digging into his curry. “How have you been feeding so far?”
“And how long can you go between feedings?” Shinsou questioned. He, too, had some good smelling blood. Most of Class 2-A did, except those with “weak” quirks like Hagakure, Ojirou and Shouji, who all smelled normal to him. Shinsou was in the upper-middle of the pack, blood wise.
“Uh…” Izuku glanced at Katsuki, who was looking right back at him with an unreadable expression. He looked away before he could stare for too long. “Well, usually I wait until the evening, and just… see who’s alone outside. I have a sleeping agent in my fangs that knocks people out and erases their memory, and since it doesn’t hurt the students besides making them a little tired, I’ve never been worried about it.” He remembered the other question and looked at Shinsou. “And the max I can go is about two weeks before my hunger gets… uncontrollable.”
“Wait, but Bakubro didn’t lose his memory,” Kaminari said.
Izuku shook his head. “It doesn’t work on everyone, but I also purposefully didn’t inject him with any. I didn’t want him to be the only person in class who forgot.”
“Cool,” Ojiro shrugged, spooning some curry into his mouth.
“So, do you need one of us?” Todoroki asked. “I’d be fine if you needed some of my blood.”
“Yeah, I wouldn’t mind either!” Ochako chirped. The rest of his classmates muttered their agreements. Izuku felt truly touched by all of their offers, and their acceptance of who he was.
“I don’t want to pressure any of you,” he said quickly, waving his hands, even as the gnawing in his stomach grew stronger.
“Midoriya-kun, your eyes are glowing,” Tokoyami commented. Dark Shadow peeked out of his shoulder, staring at Izuku intently. The boy blinked, looking down at the ground.
“Uh, sorry, that happens when I’m hungry,” he said.
From across the table, Kacchan let out a long-suffering sigh, standing up. “Come on, Deku.” He left his bowl on the table and made his way over to Izuku. Izuku backed up another step, the smell of Kacchan’s blood growing more and more intense the closer he got.
“W-why?” He asked, slightly panicked. Kacchan narrowed his eyes at him before he snatched up his wrist and began to drag him out of the room.
“Why the hell do you think, dumbass?” He barked. The rest of the class laughed and began to chatter after them, wishing good luck and other random things that made Izuku blush. Kacchan dragged him toward the elevator, and Izuku let him lead despite his trepidation.
“But Kacchan,” he began, biting his lower lip. His fangs pricked on the skin, although they didn’t draw any blood, as he was slowly running out of it by the minute. Katsuki glanced over his shoulder as he hit the button, opening the doors. He shoved Izuku inside before he stepped in after him, hitting the button for the fourth floor. They were going to his room, then. The doors closed, keeping them in an enclosed space. Izuku reached a hand to his nose, trying to keep the enticing smell of Kacchan’s blood from getting to him. It didn’t work.
Katsuki crossed his arms and glared at him. “What the fuck are you doing? You don’t like my blood or some shit?”
“N-no!” Izuku stuttered. “I like it. A lot .”
For some reason, Kacchan blushed, the tips of his ears turning red. He looked away from Izuku, clucking his tongue. “Then what’s the fucking issue?”
“Are you sure about this?” Izuku questioned. “I mean, I thought…”
“I already fucking told you I don’t have a problem with it!” Katsuki snarled, meeting Izuku’s eyes again. He had none of his lying tells; a little scrunch between his brows, or excessive blinking. Izuku relaxed a bit, but still kept his guard up. The elevator deposited them on the fourth floor, and Katsuki made his way down the hall toward his room. Izuku trailed after him, continuously glancing back toward his escape route. He wasn’t sure why he was so nervous about this; he’d drank Kacchan’s blood before, and he’d liked it! Kacchan already said. He was fine with it, so then why was his heart racing in his chest?
Katsuki shoved Izuku inside of his room, closing the door behind him. He leaned back against the door and crossed his arms, eyes half-lidded as he watched Izuku. When the greenet didn’t move, he rolled his eyes. “Well? Are you just gonna fuckin’ stand there? I know you’re getting uncomfortable, asshole.”
Izuku stopped shifting from foot to foot. Why was he so nervous about this? Kacchan was offering his delicious blood, and he might as well take it before the blond changed his mind. Katsuki must have seen the change on Izuku’s face, because he straightened up from his slouched posture, dropping his arms to his sides. He barely had enough time to take a deep breath before Izuku was on him, one arm pinning his bicep against the door, the other grabbing the back of his neck to yank his head down closer to him.
“Oi-!”
Izuku bit down onto his throat, directly into a vein. He couldn’t help but moan as the slightly sweet taste of Kacchan’s blood filled his mouth. He pressed closer to the boy, until their entire bodies were touching, chest to chest, hip to hip. He laced his fingers in the back of Katsuki’s hair to get a better grip, forcing him to tilt his head further to the side for better access. Katsuki’s hands fluttered to rest on his hips, but he didn’t push Izuku away. He took it as a good sign, allowing his eyes to flutter closed as he drank.
Once he’d gotten a few pints, he retracted his fangs, softly licking over the puncture marks on his friend’s neck. Katsuki’s entire body shivered with the motion, like he hadn’t been expecting it. Izuku let go of his harsh hold on the older boy, stepping away from him to wipe his mouth of any excess blood. To his surprise, Kacchan was panting, staring at him like he’d never seen him before.
Izuku let out a noise of concern. “Kacchan, are you alright? Did that hurt?”
Katsuki shook out of his daze, narrowing his eyes at Izuku. “It didn’t fucking hurt! I’m not some weakling who can’t handle you, damn nerd.” He shoved his hands into the pockets of his sweatpants. “Fucking- don’t fucking wait that long next time, okay? Just- come get me when you’re ‘hungry’ or whatever.”
Izuku watched him, taking in his slightly hunched shoulders. He almost looked embarrassed, although he couldn’t imagine why. “…Okay, Kacchan. Thank you.”
“S’whatever,” Kacchan grumbled. He turned and opened the door. “I’m gonna go eat now.”
Izuku followed him out, smiling a little. “That’s probably best. You’ll need the nutrients to replenish your blood!”
“Don’t sound so fucking creepy!”
(x)
Katsuki rutted up into his tight fist, hissing at the drag of his sensitive dick against his slick palm. He pressed his other hand to his mouth, biting down on the skin there to keep from making any noise. Shitty Hair was likely still down in the common room with the other extras, as it was too early in the night for him to try going to bed yet, but he still didn’t want to risk being overheard. It was embarrassing enough that he was jacking off to the thought of what Deku had done earlier, the last thing he wanted was to be heard muttering the nerd’s name or some shit.
“ Fuck ,” he snarled quietly into the back of his hand, tightening his grip on his cock. He could still practically feel the way Deku’s hand had gripped the back of his hair, forcing Katsuki to do what he wanted while he sucked the blood from his neck. Something about it had been so arousing . Knowing that Deku could pin him down and take what he wanted if he really wanted to was fucking him up, he swore to god.
He stroked his thumb over the head of his dick, huffing out air at the tingle of pleasure that raced up his spine. The phantom sensation of Deku’s tongue licking over the sensitive spot on his neck was almost too much. He’d had to bite his tongue hard to keep from moaning when the nerd had done it, although he’d been expecting it from the last time. Goosebumps rose to his skin at the memory, and his toes curled as an intense orgasm racked over him. He was pretty sure he brokenly groaned out the beginning of Deku’s name before he’d caught himself.
As he lay on his bed, panting and staring up at his ceiling, sweat and cum covering him, he slammed his clean fist down on his bed next to him. “Fuck!”
He was so fucking screwed.