What a damn hero - Part 3 [FINAL]

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Izuku's nightly conversations with Katsuki had turned from text into real-life voices, Izuku leaning against his pillows as he watched and listened, smiling at all Katsuki's amazing work stories and singing his praises. Katsuki tended to prop his phone on the windowsill and talk to him while he cooked dinner, occasionally pausing to watch Izuku giggle on the other end of the call. 

To Izuku’s surprise, Katsuki even asked questions of his own - what kind of work did he do? Was it interesting, or boring as fuck? How did he manage to win such massive accounts for the firm when he was such a mumbly nerd? How did he meet his hero friends, were they clients at some point? Katsuki listened to every rambling answer, nodding along, asking follow up questions with an ease that made Izuku stupidly jealous.

A week after his lunch with his friends, he still hadn't admitted his lie to them. A small part of him desperately hoped, deluded himself into thinking maybe, just maybe, he wouldn't have to correct it after all. They got along so well, after all! But Katsuki was a hero, a top ten hero, he was Ground Zero who occasionally, if Izuku begged and pleaded just right, showed off little sparks on camera for Izuku to gush over. 

The night before, he'd even gotten to meet one of Katsuki's friends! Red Riot! – or Kirishima Eijirou, he learned – who had given Katsuki such a run for his money at the sports festival. He was like a ball of sunshine, next to Katsuki, all bright words and smiles and hugs that Katsuki reluctantly accepted, though he never returned them. He told stories of Katsuki’s glory and laughed when Izuku fawned in response, but more importantly, he said those words that Izuku had come to love so much:

“Bakubro never shuts up about you!”

And so, when Izuku ended up stuck at work for an extra hour and a half working on an important new account, he had forgotten to be scared of walking home in the dark. He’d been so busy thinking about getting home to talk to Katsuki, to hear about his amazing day and share the news about his big new client (and the hefty bonus that would come with it), that it had completely slipped his mind. 

At least, it was forgotten until he saw someone crossing the street toward him, and he fell still. His blood ran cold, his excitement gone in an instant.

He knew that figure.

Silently, he turned around, hurrying his pace back toward the office. Most of his colleagues had gone home, but there were still a few in the building, right? He'd said goodbye to someone as he walked out, hadn't he?

He noticed the footsteps getting closer, contemplated running, but it was too late. In his panic, he hadn't paid enough attention, hadn't thought about his actions, hadn't remembered the endless words of advice Katsuki had drilled into his brain.

“Izuku,” the voice demanded, fingers curling too-tightly around his arm and dragging him to a halt.

Fear overwhelming him, Izuku tried desperately to think even a single coherent thought.

Katsuki. Katsuki was a hero. What would Katsuki say? What would Katsuki do?

That was a stupid question, he would use his quirk, but-

Izuku felt the impact before he realised he was moving, his tight fist slamming into a surprisingly soft nose. He'd always thought punching someone would hurt, with all those bones in the way, but the sharply pointed nose gave way under his touch, producing a sickening crunch as he stumbled backward and Izuku used the chance to tear his arm away.

“Bastard!”

Izuku flinched, eyes squeezing shut as he braced himself, the body twice his size lunging at him.

The blow never came.

“Oi, asshole,” a rough voice growled. “The fuck you think you're doing to my boyfriend, huh?”

He cracked an eye open, tears clouding his vision, but even through the blur he made out the familiar blond spikes, the muscular arms of his dreams.

Izuku shrank behind him, too terrified to even feel pathetic for it as he huddled behind his hero – his hero who was standing in front of him.

Or maybe he'd been knocked out and this was all a dream.

“If you come near Izuku ever again you're gonna die by fuckin' hero explosion.”

Sparks burst in his hand as he spoke, and he peeked out to see dark eyes raking over Katsuki's body, halting on his black-and-orange boots.

“Get out of my fucking sight.”

Izuku never saw him leave, but soon Katsuki was turning to look at him, a hot hand gripping his chin with a surprising gentleness, tilting it up until their eyes met.

“You alright, Deku?”

Izuku burst into tears rather than answer, and Katsuki made an unimpressed noise under his breath, instead opting to turn Izuku this way and that as he inspected him himself. Finally satisfied, he wiped the tears from Izuku's cheeks with his rough hands, and Izuku sniffled as he tried to get himself under control.

“What are you doing here?” he choked out.

“Thought it was time I met my fuckin' boyfriend in person.”

“W-Wha? Kacch- Ground Zero! Stop teasing!” he whined, scrubbing at his face with his sleeve.

“Don't fuckin call me that. You know my damn name, use it.”

“B-Bakugou-sama, I-”

“Fuck off, try again.”

“K-Katsuki... san...?”

“Zero for three, nerd.”

Izuku fell silent, staring up at the conceited smirk and striking eyes, then cracked the tiniest of smiles.

“Kacchan?”

“Yeah, nerd. Now seriously, don't you know heroes can have whatever guy or girl they want?”

“Of course! L-Look at you!”

Katsuki snorted, but didn't object, and Izuku blushed as his gaze fell back to his polished shoes in a hurry.

“I've decided I want you.”

“M-Me?" He asked apprehensively, refusing to look up. "Why would you want me?”

“I guess I like having my ass worshipped by a quirkless nerdass with a cute face.” He paused, then held Izuku by the shoulder, turning him a little. “And a cute butt, good to know.”

“Kacchan!!”

With a smirk, Katsuki's hand shifted to the middle of Izuku's back, guiding him forward.

“Come on, I'll walk you home.”

“Th-thank you. You're my hero.”

By the time they reached the front door, Katsuki was already complaining. The building was old and shitty, there was no security guard, no keycard entry. The kitchen was too damn tiny, when they made it upstairs and he commandeered the little room to make coffee. The living room was too small, when he coaxed Izuku into his lap as they sipped at their mugs. Izuku was too taken aback to do more than just nod along, too focussed on the way Katsuki's big, strong hand stroked along his spine and trailed up the back of his shirt. His quirk came from those hands, they were godly, and here they were touching Izuku like he was worthy.

“For the record,” Katsuki began, snapping Izuku out of his daze. “If you tell me to stop, I will. So if you're gonna say it, make sure you mean it.”

“I know I'm an idiot,” Izuku sniffed, wiping his face one last time. “But why would anyone tell you to stop?”

“Because I'm a hero, you mean?”

“Because you're hot.”

“Bedroom, let's go. Make it snappy.”

He tore Izuku's empty mug from his hand, shoving it aside on the coffee table with his own, and with an arm beneath his thighs Izuku found himself lifted off the ground, hurried through the tiny hallway and thrown at his own little bed. He hadn't even bothered making it that morning, let alone cleaning up and vacuuming, but Katsuki didn't seem to notice the clutter as he straddled Izuku's hips and reached up his shirt.

“You want me to stop?” he asked, one last time.

“God no.”

“Good answer.”

He threw Izuku's shirt aside, reaching for his pants next, and Izuku just stared in wonder when Katsuki stripped himself to match. Those incredible arms were right in front of him, close enough to touch, and the pecs, God, the pecs. His hands twitched up to grab them, and Katsuki snorted, but didn't object. He even paused his hurried pace, letting Izuku explore tentatively, fingertips tracing the curve of every muscle and squeezing at tight spots to see how they felt. As he grew braver, they trailed down to Katsuki's abs, and while he didn't realise he'd started mumbling to himself, he did see the little smile it put on Katsuki's face as he listened to the frantic praise.

When Izuku had had some time to explore, Katsuki leaned in and bit down lightly on the side of Izuku's neck, watching him squirm and arch to give Katsuki full access. He took advantage of it, biting down a little harder and running his tongue along the marks, sucking a dark spot on his skin.

“So no one will get any ideas about taking you away from me,” he smirked, when Izuku's fingers rose to feel it. “You're mine now, you hear me?”

Izuku just nodded, smiling that same disbelieving smile, eyes shining with awe and affection. He was too damn cute, how the fuck was Katsuki supposed to resist?

So he didn't.

He snatched a bottle of lube from the bedside table and coated his hand, cackling when Izuku moaned under his touch. The first two fingers slipped in easily, Izuku whispering his pleas for more, and after a minute Katsuki slipped a third in, stretching him wide.

“I'm gonna fuck you so hard, Deku. Gonna fuck those little mumbles right out of your body.”

“Please, Kacchan.”

Katsuki was inside him in a heartbeat, lube hastily squirted on his shaft and spread on his way into the hole. Izuku moaned long and loud, head falling back as his mouth opened to let them out, and Katsuki hissed as he began to twitch his hips in anticipation. He knew he should wait, should give the nerd time to adjust, but... Fuck it.

Izuku didn't seem to care – certainly didn't protest. He ground down on Katsuki's crotch with every thrust, whining when Katsuki pulled out, moaning again when he filled him back up. Izuku's vision blurred, only two red eyes breaking through the fuzzy layer, but still he pleaded: more, Kacchan, more, more.

With a bitten off moan of his own, Katsuki came, spilling all over the bed as he continued to thrust weakly. Izuku squeaked, face burning red when Katsuki reached for him, a couple of quick strokes sending him straight over the edge and casting his own load into the mess.

“Fuck, yes,” Katsuki hissed as he pulled out, gasping for air. “God you feel good, Deku. We're fuckin' doing that again every night for the rest of my damn life.”

“Anything for Kacchan,” Izuku sang, already giggly and sleepy. “So good, Kacchan!”

“Fuck,” Katsuki grunted, turning away as pink rushed to his cheeks. “You little shit.”

“Kacchaaaaan,” he repeated, beaming to himself. “If we're really gonna be boyfriends, I wanna keep saying Kacchan.”

“Fine by me, Deku.”

He flicked Izuku in the forehead lightly, getting another tired giggle as Izuku reached up to rub at the sore spot, but his face fell when Katsuki climbed off the bed.

“Gotta clean us up,” he explained. “Wait for me.”

“Kayyyy.”

He returned momentarily with a damp towel, giving himself a quick wipe down before he cleaned Izuku off with much gentler motions and stripped the blanket from underneath him.

“I'll buy you a new blanket, this thing looks old and shitty anyway.”

“I can wash it, Kacchan,” Izuku pouted. “New things are expensive.”

“Don't care. You need something big and warm and fluffy, it's no wonder you have nightmares.”

“I don't, Kacchan! Not when I go to sleep talking to you!”

“Shut up, sappy nerd.”

“Sleep here with me, Kacchan.”

“Yeah, alright.”

He rummaged through Izuku's drawers to find underwear, dressing Izuku in a pair of silky boxers and borrowing a pair for himself, although they were stupidly short on him and his ass barely stayed below the elastic.

“The first time we video called,” Katsuki began, as he crawled into the bed and snuggled in close. “I saw that you were fuckin' cute and decided then and there that you were gonna be mine.”

“Mm... That's okay, I jerked off to your sweaty gym selfies.”

“What the fuck?! You fuckin' pervy nerd!”

“It's not like other people don't do it too!” Izuku whined, snuggling in tighter to bury his face in Katsuki's chest. “You said it yourself!”

“Next time, fuckin' call me.”

“Only if you send more sexy photos. Oh! Photos!”

He crawled over Katsuki to reach his pants, digging his phone out of his pocket, and with a cute little smile he pulled up his camera.

“Say cheese, Kacchan! Our first snuggles!”

“Fuckin' nerd.”

Izuku snapped the photo regardless, grinning giddily when he set it as his wallpaper, sending it to Ochako and Tsuyu as an afterthought. Katsuki snatched the device and sent it to himself, too, snorting at the texts that were already coming in from the girls.

“Your friends are freaking out,” he smirked, tossing it back lightly. “Tell them goodnight, I'm tired as fuck. Tomorrow we'll pack up your stuff and you can come move in with me.”

“Kacchan! It's been, like, an hour!”

“And I'm already done sleeping alone.”

Izuku paused, but when he looked up at Katsuki again a smile slowly spread across his face, eyes shining brightly even when they squinted to make room for his grin.

“Anything for my hero!”