[NSFW] FIC - "Eyes On Me"

DKBK | post-canon | established relationship | jealousy | possessiveness

Izuku suggests an idea that he regrets almost instantly. But at least they both get what they want.

==

EYES ON ME

Izuku knew going into this that it would be hard. He’d anticipated the struggle, the heightened emotion, and the grappling self-control.

Even still, it was only the fact he no longer possessed One For All that kept him from launching off his barstool to rip the stranger’s hand from Katsuki’s waist.

It was their last night in London. Hawks had allotted them three weeks to complete the mission, but Deku and Dynamight had done it in half the time—three days for reconnaissance and finalizing their undercover personas, and a week to locate and capture their target.

Their flight back to Japan left in two days, which gave them a brief respite from their hectic hero schedules and the opportunity to enjoy themselves in relative anonymity.

The idea had come to Izuku their first night in London, after Izuku had needed to flirt with a bartender for information. Later, as he’d gripped the headboard and moaned into his pillow, Katsuki had draped his heavy body over Izuku’s back and murmured against his ear, “I think you like making me jealous.”

Izuku didn’t, if he was being honest, but he did like how hard Katsuki fucked him afterward. Which got him thinking about the times their positions had been reversed—when strangers at a bar sent Katsuki drinks (that he’d then pass to their friends), when someone brushed past Katsuki too closely to be accidental—and the flash of canines within a too-wide grin as Katsuki spread his legs afterward, eyebrow raised as if to ask Izuku, “Well? What are you gonna do about it?”

Izuku knew that Katsuki was never trying to make him jealous. It wasn’t Katsuki’s fault that gazes were naturally drawn to him, especially when he walked into a room like he owned it. Not to mention the fact Katsuki was unreasonably beautiful with his sharp eyes and pretty face, his broad shoulders and tiny waist, thick biceps and smooth skin.

Knowing Katsuki wouldn’t spare a glance for anyone else meant Izuku didn’t linger too long on those moments. But that first night in London had gotten him thinking.

Their sex life was anything but dull, and Katsuki had (hopefully) never had reason to complain. They’d fumbled a lot in the beginning, but they’d learned together, fueled by eagerness, love, and an insatiable desire to please each other. It was impossible not to notice, though, that Katsuki liked it when Izuku fucked him hard enough to bruise, when Izuku’s need for him eclipsed his desire to please.

So Izuku had proposed the idea for when their mission was over and they could take advantage of being in a foreign city far from Japan and Hawks’s far-reaching gaze.

He wasn’t surprised when Katsuki told him no at first, but with Izuku’s reassurances, he’d given in. In the week following, between briefings and undercover work, Katsuki had continued to ask if Izuku was sure, if he wanted to change his mind, and that he’d understand if he had. But Izuku was adamant that they should at least give it a try.

There were rules, of course. No kissing on the lips. No hands below the waist or underneath clothes. And either of them could call it at any time, no questions asked.

Now, here they were, in a nightclub of all places, surrounded by strangers and flashing lights and the stench of alcohol. Neither of them were into the party scene. They preferred a quiet night in front of the TV or walking along the riverfront.

However, they’d agreed that a nightclub would be the ideal setting. So Katsuki had wrestled on a pair of tight jeans, draped his belt in chains, and threw on a basic black tank that accentuated his shoulders and chest. He’d smudged some black liner at the corners of his eyes to make the red pop, and Izuku had been ready to devour him before they even left their borrowed apartment.

The moment they entered the nightclub, hungry gazes had followed Katsuki through the London crowd. He was tall and blonde but clearly a foreigner with his elegant features and aura of mystery. Izuku had sat himself at the bar with a beer and settled in to watch the show.

Or rather, endure the show. His palms were sweaty, his stomach was in knots, and he wanted to grab his boyfriend and flee. Instead, he propped his foot on the bottom of his barstool, jiggling his leg restlessly.

Contrary to what a lot of people seemed to expect about him, Katsuki didn’t relish being the center of attention. But they’d come here for a reason, and Katsuki joined the dance floor clearly prepared to play his part. To that end, Katsuki watched him back, shards of red cutting into him even through the music, the low lights, and the swathes of nameless bodies.

It took every ounce of willpower Izuku possessed not to charge onto the dance floor the moment someone leaned into Katsuki from behind and trailed their fingers down the sharp definition of his biceps.

His grip tightened around the glass beer bottle. He couldn’t fold this quickly. What was even the point of doing this if he lasted all of five minutes? 

Katsuki would never choose to hurt Izuku, which was why Izuku had to be the one to suggest something like this—Katsuki was beautiful and bold and uncontainable. He was both the howling storm and the calm in its wake.

The only person he’d ever willingly held himself back for was Izuku. The least Izuku could do was give him the fucking he deserved.

Izuku couldn’t tear his gaze from Katsuki’s long enough to take in anything about the person pressed to Katsuki’s back. He wasn’t even sure of their gender. All he knew was that there were hands that weren’t his closing around Katsuki’s waist, a mouth that wasn’t his whispering something into Katsuki’s ear, invading space that belonged to Izuku.

Katsuki didn’t react other than to tilt his head, those slivers of red never leaving him.

Gut churning, pulse thudding, Izuku clenched his teeth so hard that they ached. Forcing his jaw to relax before he cracked a molar, he took a long swig of his beer, but it did little to calm his racing heart.

Whatever expression he was making clearly broadcasted his thoughts, because Katsuki’s pretty mouth stretched into a grin that was all teeth and cocky challenge.

There were times, Izuku was sure, that Katsuki enjoyed knowing what he could do to Izuku. That he alone was the catalyst for all the darkest parts of Japan’s so-called One For All Hero—his rage and vengeance, jealousy and obsession.

Izuku knew that it was never a malicious joy, but that didn’t make it any less twisted. He knew, because he felt it as well, the vicious satisfaction, the certainty that he could look into Katsuki’s eyes and see reflected there the same gluttonous desire, the same insatiable want.

A second person appeared beside Katsuki, burly hand boldly touching Katsuki’s chest through his tank even as their head dipped to nose at Katsuki’s jaw. Not to be outdone, the person still at his back wrapped their arms around Katsuki’s waist, their hips moving in a slow, firm grind. 

Katsuki didn’t touch them back, but he didn’t pull away either.

After nearly two decades of knowing him, Izuku could confidently say that Katsuki didn’t like being touched, even casually, without invitation. He’d learned to put up with affectionate friends like Kirishima, Kaminari, and Mina, but he didn’t initiate.

That meant Katsuki was probably holding himself back from exploding the extras who were daring to put their hands on him. His body language gave nothing of that away, though, as he held Izuku’s gaze through half lidded eyes.

He wanted to see Izuku squirm. He wanted Izuku unfettered by civility, given into pure emotion. Izuku's ears filled with a rushing sound, and his dick swelled beneath his jeans.

Even here, the light, however meager, seemed to love Katsuki, highlighting his cheekbones and the pale crown of his hair, glimmering over the thin sheen of sweat on his shoulders, his arms, his collarbones.

He stood out like a supernova within a galaxy of red dwarves. So it was no surprise when yet another person made their way toward him.

He had to be a fellow hero, towering over everyone else with huge arms and shoulders that forced the other dancers to make room for him. He was built like Endeavor in his prime, big enough to make even Katsuki look small.

For only a second, red eyes left Izuku, shifting away to take in the newcomer.

Izuku had had enough.

In a flash, he was on his feet and closing the distance between them. The stranger’s hand was raised, poised to cup Katsuki’s jaw. Even as Izuku registered Katsuki’s sneer, even as Katsuki's own arm was half-raised to intercept the unwelcome contact, Izuku stepped between the two men, gripping the stranger’s wrist to still further movement.

The man's mouth opened, but Izuku wasn’t interested in anything he had to say.

"Excuse us," Izuku said. Then he turned to Katsuki, taking hold of his arm instead. Protests rang out behind them as Izuku tugged him off the dance floor, away from the disgusting swarm of sweaty bodies and strangers’ pawing hands.

Within moments, they were outside, the brisk air a balm against overheated skin. Katsuki was quiet except for his quick breaths as Izuku hauled him into the parking garage. His excitement was palpable, his steps hurried.

“That guy was bigger than you,” Katsuki said.

Izuku knew what he was doing. That was the whole point of this.

“If you wanna be manhandled, Kacchan, you know that won’t be a problem for me.”

“Really? Hero Deku’s not afraid to get rough?” he asked snidely.

“Hero Deku isn’t the one about to fuck you.” Instead of the driver’s side door, Izuku threw open the back of their car and climbed in, Katsuki right behind him.

The moment the locks clicked shut, Izuku was on him, smashing their mouths together in a kiss that was more teeth and tongue than lips. He yanked Katsuki onto his lap to straddle him so that he could grip two handfuls of Katsuki’s ass and force their hips together.

Katsuki groaned as their hard cocks rubbed through the stiff fabric of their jeans. Izuku swallowed the sound by shoving his tongue inside his mouth, licking into the hot cavern and scraping over teeth, claiming every inch of him that he could reach.

With a guttural sound, Izuku shoved down the straps of Katsuki’s tank, stretching the neck as it caught around his broad shoulders. There was a loud rip as Izuku yanked the fabric lower until it settled beneath Katsuki’s pecs and around his elbows, effectively trapping his arms at his sides.

“I liked this tank, asshole,” Katsuki said, too breathless to sound menacing.

“You have three more just like it,” Izuku said, dismissive, before burying his face between his tits.

God, he loved Katsuki’s chest. They were big and soft and bounced when they fucked, and that stranger in the club had put their goddamn hands on them—

Izuku didn’t like feeling jealous. It was an ugly emotion, even though he’d known going into this that it would be hard to control.

But he’d also known that in order for this to be as authentic as possible, they’d both had to agree to step out of their comfort zones.

And this? Katsuki thrusting down on his lap, head thrown back and moaning as Izuku sucked as much of his left tit into his mouth as he could was their reward. His tongue swirled around the hard nipple, flicking it hard enough to make Katsuki flinch.

“Fuck, like that,” Katsuki gasped.

Izuku released his mouthful with a pop, before he clenched a fist in soft blonde spikes and pulled him down into a filthy kiss.

“Is this what you want?” Izuku demanded as he tugged open the front of Katsuki’s jeans. “You want to be groped and forced to spread your legs? You let just anyone touch you like this?” His fingers closed around Katsuki’s hot length, thumbing hard at the head. Precum leaked from the slit, coating the pad of his fingertip in slick. “Didn’t know you were such a slut, Kacchan.”

Katsuki moaned, thrusting into what had to be a painful grip. “Only for you,” he mumbled. “Shitty ass nerd.”

With a dark laugh and a shameless demonstration of strength, Izuku did some quick maneuvering to remove Katsuki’s jeans and boxer briefs. Then Izuku sat him again on his lap, naked except for his ripped tank still stretched around his torso and upper arms.

“Hurry up.” Katsuki leaned down to sink his teeth impatiently into Izuku’s neck.

“ Ow! Kacchan, you—” He cut himself off and jerked open the front of his pants to free his own aching dick.

Fumbling for the packet of lube he’d stashed in the center console, he tore it open and drizzled it carelessly over his cock.

“Fucking finally,” Katsuki whispered harshly. “Bet those extras would’ve— fuck! ”

Izuku pushed inside, bottoming out on a single thrust. Katsuki’s whole body jerked, and he all but screamed, his voice rough and ragged. Without pause, Izuku gripped his waist and began thrusting, his pace hard and quick.

“If you wanna be able to walk tomorrow, don’t finish that sentence,” Izuku said, fucking into that tight, grasping heat. He always felt incredible, clamped around him like he belonged there.

It was fucked up, maybe, how they craved each other like this, unhinged and unrestrained. It wasn’t always, and this was the first time they’d orchestrated the situation, but it didn’t change how Izuku hungered for him in a way that defied rationale, how seeing someone else put their hands on Katsuki made him want to tear the offending limb off with his fucking teeth. Or that Katsuki knew all this about him and craved it just as much, feral possessiveness in the way he clawed at Izuku’s skin, like he wanted to climb inside and devour the bleeding heart within.

It’d always been his anyway.

Katsuki clenched around him, searing and slick. He’d stretched himself a little beforehand, but Izuku knew he liked the initial ache of that first thrust. Izuku’s nails dug into sweaty skin as Katsuki’s voice stretched into a long, broken moan, accompanied only by the wet slap of skin. His pecs, pushed up by his tank, bounced with each hard thrust.

Izuku licked at them like a dog seeking water, tasting sweat and the mottled texture of the scar that bisected his chest. His nipples were so cute, rosy buds against his pale skin. Izuku drew one between his lips, biting gently. He tugged with his teeth, soothed with his tongue, and sucked harshly until it was puffy and red before doing the same to the other nipple. 

“I—Izu—Izu, I’m—ah, ah!” Katsuki gasped into the humid air.

The windows had fogged up, and with the way the entire car rocked with their movements, it wouldn’t be very hard for an outsider to figure out what was happening.

“Say you’re mine,” Izuku panted, digging bruises into his narrow waist. “Say no one else gets to have you like this.”

“Izuku— fuck, shit, you goddamn —yes, yes, I’m yours. Yours. Fucking yours.”

“I’m gonna come inside you.” Izuku fucked him harder, balls aching, belly stinging where Katsuki’s dick slapped his skin. He’d rucked up the bottom of his shirt so that the wet head of Katsuki’s cock could paint his abdomen in clear sticky trails.

“Inside,” Katsuki agreed. His eyes were squeezed shut, but his lips were slack, drool running unnoticed down his chin.

Izuku lapped it up, hungry for the taste of him, before sliding his tongue down his neck and sucking hard. “Clench down for me, Kacchan. Tighter.”

With a broken cry, Katsuki clenched even harder around Izuku’s cock, the grip constricting enough to hurt.

Izuku hissed at the pain and pleasure. “Ah! You feel so good. So good, Kacchan. M’gonna come inside. Gonna prove you're mine.”

Seizing up, Katsuki jerked as he came. His nails scraped down Izuku’s sides as his dick spurted between them. Hot cum shot over Izuku’s stomach, the hem of his rucked up shirt, a droplet even landing on his chin.

Katsuki was absolutely gorgeous in orgasm, skin glistening, pale hair sticking wetly to his temples, brows pinched and mouth open in a near-soundless scream.

No one else was allowed to see him like this. No one else was allowed to even lay a finger on him in a way that wasn't platonic.

Izuku fucked him through his orgasm, fucked him as he tumbled over the edge after him, pumping Katsuki full and continuing to thrust until his cum was leaking out around his cock in a disgusting froth. He never wanted to stop, never wanted to leave the searing clasp of his perfect ass.

“S-Stop,” Katsuki stuttered, smacking weakly at Izuku’s side, which was the only part of him he could reach with his upper arms still restrained.

With one final thrust, Izuku slumped boneless against the seat. Katsuki was dead weight atop him, but he didn’t mind. He loved it when Katsuki let go like this. 

Breathing hard, Katsuki rested his forehead against the back of the seat next to Izuku’s head. “You’re fucking insane,” he mumbled, exhausted.

He didn’t sound mad, though, so Izuku only nuzzled into the crook of his sweaty neck and said, “Insane for you.”

A soft snort escaped. “Lame.”

“You okay?”

Katsuki drew back so that they could see each other’s eyes. A tired smile curved his lips. “Fucking perfect. Could do with a shower though.”

Izuku dropped a kiss to his lips with a hum of agreement. “Let’s never do that again.”

“It was your idea, idiot.”

“I know. But next time, maybe we can think of something that won't put me at risk of becoming an international mass murderer.”

“Been there, done that.”

Despite himself, Izuku laughed.

“But yeah,” Katsuki continued. “Fucking hated all those extras. Now take me home.”

~fin