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I'll Be Your Mirror

Summary:

A sudden crack and a slap at his waist interrupted his laboured breath. Just what he wanted. Katsuki was panting, not from the physical exertion, but the squeeze of Blackwhip retracting him into Izuku’s arms. They barreled toward the ground. Katsuki glanced backward, flailing his palms into a position to brace their fall if need be. Luckily, Izuku managed to slow, jerking them both into a choppy landing. It was clunky but manageable, Katsuki skidding against the gravel with Izuku on top, a tangle of Blackwhip between them.

Holy fuck, he wanted Izuku.

The reception of The Suit didn’t exactly land as Katsuki imagined. So when Izuku decides they will train together, Katsuki is more than relieved.

Or, fighting as foreplay. Katsuki finally gets to live out his fantasy, and Izuku reclaims a piece of his identity.

Notes:

This is part of a series following a chronological timeline of Katsuki and Izuku's relationship. While the reading order may change as new works are added, each story is intended to stand on its own.

(See the end of the work for more notes.)

Work Text:

It had to be green. Not just any shade of green, THE green—his green, deep like a cool alpine forest, just shy of teal. It was a perfect match, Deku translated in the crisp lines of an anodized, patent-pending mixed alloy (stronger than titanium, he was assured). Watching Izuku fully encased before him, Katsuki didn’t even mind the gold accents. He preferred the aesthetic of Deku’s costume with black detailing, even if gold was more symbolic. But this was not Katsuki’s vision to sculpt, and if gold defined Izuku’s last iteration of Deku, who was he to change that? It’s not like he could have asked him—

Fucking idiot!

Katsuki was still raw from the whole debacle that was The Suit. Project Deku, what a joke. He gritted past the familiar gurgle of guilt in the pit of his stomach he was accustomed to ignoring. Now was not the time for intrusive pangs of self-loathing to interrupt the moment. Katsuki swallowed, watching Izuku dig further into his stance, each waiting for the other to make a first move. Izuku insisted that Katsuki dress for the occasion, ensuring they were both equally represented in their hero attire. “You’re not complete without the mask,” Izuku said and handed him the jagged black fabric. It seemed unnecessary, but Katsuki was in no position to argue.

It had been almost a week since Izuku spoke his truth. It was a messy truth of insecurity and resentment, all tangled in high-tech armor and poorly executed good intentions. It wasn’t that Izuku didn’t want the suit; he needed time. Space.

Do you even love me? Or do you just love Deku…”

The words haunted Katsuki like a nagging scab, an itch that nervous fingers couldn’t help but trace and re-trace. While the tension had eased over the days, Katsuki was still unsettled. Off. He continued to communicate that he didn’t care if Izuku was a hero. It was another lie to add to the pile, but the core of the message was true. There was no pressure to keep the suit. As humiliating as that was, he was braced to accept the loss if that meant Izuku was living his authentic life. A life that still included him.

And then the clouds parted. Katsuki was out for his morning run the day before when an unexpected excitable voice caught him off guard. “We’re training together!” Izuku huffed out of nowhere. Startled, Katsuki nearly tripped over himself in relief. It wasn’t a question, but a statement, and Izuku did not wait for a response before he whizzed past at an ambitious pace. Katsuki only smiled, and raced ahead, fuelled by giddy endorphins to his best time in months—years probably.

Now, they stood in the enclosed gravel field behind Dynamight’s headquarters, encircling each other like feral street cats. Katsuki shook himself loose, rolling the persistent guilt off his shoulders. Be present. It had been so long since they found themselves in this position, just the two of them, face to face, challenging each other to be stronger versions of themselves.

God, Izuku looked so iconic, gold accents and all. And serious. Izuku was always so serious when he trained. But there was also something unnamable. Joy? Anxiety? Izuku’s lips twitched, a small crack in his concentration. Katsuki couldn’t restrain a low chuckle.

“What?” Izuku asked with his typical earnest curiosity.

“I just have been. It’s…” He should tread cautiously, Katsuki decided. If he said what he truly felt—that nearly a decade of anticipation for this exact moment had fueled his chest into a fluttering fit—it might be perceived as pressure. Control. This was a lesson he didn’t need to learn twice. “It’s just been a while,” Katsuki said and clenched an eager smile into submission.

“Well, what are you waiting for then?” Izuku bent his knees, and the gravel beneath their feet rattled, skittering into a low dust cloud as Izuku propelled into the air. It was a shaky ascent as Izuku tested the right calibration with small blasts emitted from each boot until he wobbled into a smooth hovering position.

Float.

Izuku wasn’t yet graceful, but it was no less exciting to watch him looming above, reflecting the afternoon sun like an enchanting prism. Katsuki was still grounded with his mouth ajar. Frozen.

A swish and a sharp snap jolted Katsuki from his dazed observation, suddenly wrangled by a luminous green tendril. Blackwhip. It wasn’t an exact replica, less erratic by nature. But the diffuse glow was a nice touch. Izuku propelled higher, hoisting Katsuki along with him until they were both well above the tall perimeter wall and the surrounding low gabled buildings. This was more than a simple grappling hook. It had agency, like an appendage that lifted him as much as it constrained him.

Katsuki was impressed and distracted. His reaction time was slow. Painfully slow. If he wanted, he could blast himself free with ease, but he found himself transfixed by the sensation of being bound—tethered to Izuku.

“Kacchan!” Izuku yelled. “Do something!”

Katsuki snapped alert, and threw a stun grenade filling the sky with brilliant light. Izuku retracted Blackwhip, unlikely from such a weak attack, but it sent Katsuki spinning free regardless. Gravity quickly took control, and he began to hurtle down toward the pavement with speed. His body tucked into an intentional somersault and he rounded back with explosive propulsion, cackling all the way. Steadied now in mid air, he caught his breath. What a fucking sight—Izuku against a banal urban backdrop of aging industrial relics with his ruffled hair swept in all directions. His yellow cape fluttering behind was perfect. Gold accents were a good choice.

“Wanna practice Blackwhi—”

But before he could even finish the thought, they were shrouded in a thick purple fog. Smokescreen. Katsuki spun around. The flickering orange glow at his palms keeping him afloat was now a dull, murky brown. It was enough, he knew, to make him an obvious target. He stilled his quirk, and let gravity capture him once again, tumbling into the hazy depths with the grace of an elite springboard diver. He waited for as long as he could before he activated his quirk and a flame streaked across the air, lifting him back into flight. This felt so fucking good.

He knew Izuku must be close behind. He was always close behind, even without the advantage of extra sensory vision built into his suit. Katsuki couldn’t let his guard down, and he varied his movement in an attempt at agile misdirection. But he was also distracted, uncharacteristically delayed. He wanted to be captured, to feel the sharp thump against armor, the constriction of Blackwhip gripped around his torso.

A sudden crack and a slap at his waist interrupted his laboured breath. Just what he wanted. Katsuki was panting, not from the physical exertion, but the squeeze of Blackwhip retracting him into Izuku’s arms. They barreled toward the ground. Katsuki glanced backward, flailing his palms into a position to brace their fall if need be. Luckily, Izuku managed to slow, jerking them both into a choppy landing. It was clunky but manageable, Katsuki skidding against the gravel with Izuku on top, a tangle of Blackwhip between them.

Holy fuck, he wanted Izuku.

 

————

 

Izuku slid from Katsuki’s abdomen, the gravel crunching against his sculpted metal casing. The landing could certainly use practice, he admitted. “Let me just…” he mumbled and retracted Blackwhip, jerking Katsuki into an awkward roll as he freed him from the glowing tendril.

“Fuck!” Katsuki grumbled as the mask shifted askew. “Stupid fucking costume!”

Izuku shifted closer, the nest of Blackwhip no longer a barrier between them. Katsuki was half propped on his elbow, readjusting the mask that had slipped off kilter, obscuring his vision. This must be why Katsuki hardly bothered with the mask these days, though Izuku always thought it was a brilliant aesthetic choice.

“But it’s so you!” Izuku said, taking in a proper view of Katsuki. A subtle flush crept from beneath the jagged edges of Katsuki’s mask. He was something special to witness, as he always was, in full hero regalia. Izuku always appreciated how form and function were truly intertwined in Dynamight’s costume. Bold, graphic, deadly.

He glanced down to his own suit, stiff compared to his once familiar costume. He missed that second skin. Each version of his costume had its own nostalgia, even his very first iteration, ill fitting and hardly resilient. But even the tattered remnant preserved in the back of his closet still had love and care laden in every stitch. This suit, too, was coated in love. The love of every person who poured thought, time, money to make this happen. The love of Katsuki. Still, it felt different—like the intoxicating scent of a new car that somehow made him miss the comfort of the old and worn past.

Perhaps he just needed to get used to operating each compartmentalized control activation. Flying was less natural. Movement in general was more restrictive, though he was impressed just how light the suit was, considering the strength. He felt less coordinated, but could hardly blame the suit. The flexibility incorporated into the design was impressive, with strategically positioned joints and paneling segmented artfully to allow a full range of movement. Perhaps one day he would be agile again, maybe even as nimble as Katsuki. No, they were never a match on agility, Katsuki’s secret weapon that Izuku found more impressive than his infamous quirk.

He glanced up to Katsuki who was now towering above with an outstretched palm and a half tilted smirk. This was a gentler Katsuki. In high school, he might have threatened Izuku with a fistful of fire. “You better not let me fucking surpass you, nerd,” he might say. Or, “You’re a waste of my time if you don’t get the fuck up!” Instead he offered an unspoken, soft invitation. Did he think Izuku couldn’t handle it any other way?

“You weren’t trying to be easy on me?” Izuku asked, as he accepted his awaiting palm. It was too easy to take Katsuki down. Too easy to throw a few unpracticed moves and send them both in an unskillful tumble towards the ground.

“What?”

“I mean, do you think I am capable?”

“Shit.” Katsuki sighed. “It’s not you. Well, it is you.” He slipped off one gauntlet and tossed it to the gravel with a thud, drawing Izuku in close, only a sliver of distance between them. “You’re just so fucking distracting,” he said and kissed Izuku firmly, his stiff glove tangled in the short curls at the nape of his neck.

Katsuki eased back and suddenly launched into a sprint, quickly collecting his gauntlet in a swift motion as he blasted into the air. “Alright, nerd,” he shouted from above. “You want a challenge?” He propelled toward the perimeter wall, kicking off the concrete into a flamboyant spin. “You gotta catch me first!” He zoomed upward, his laughter like a beckoning call to action.

Izuku smiled and then leapt toward the sky. It was a much smoother transition to flight this time, and he quickly caught up to Katsuki. Soon he was face-to-face with those crimson eyes framed by the serrated margin of a silken black mask. How could Izuku ever have taken them for granted all those years ago, across hours of practice and battle? It was preposterous. But there was little time to linger in Katsuki’s eager gaze, or the scar jutting across his right cheek—the cocky curve of his upturned lip.

“Better keep up, nerd!” Katsuki hollered and dove back towards the ground in a dramatic display.

Izuku chased after, his cape whipping behind in a frenzy. He skidded to an abrupt landing and planted firm into the gravel. “Delaware Smash!” Izuku shouted and flicked his fingers to release a targeted stream of high pressure wind. He braced against the recoil. The suit was unsurprisingly resilient, even more equipped to steady himself than his Air Force gauntlets.

It was a near miss, but enough lateral force to make Katsuki stumble as he dodged to the left and spun into the air in a golden blaze. “Gotta do better than that, Deku!”

Izuku aimed again and sent a blast of wind toward Katsuki. But it was no match for his erratic aerial dance. A miss. Izuku was suddenly transported back to high school, Katsuki bounding through the air in his U.A. track suit. He was always such a marvel of a moving target, unpredictable and fast. So fast.

Izuku could unleash full power, or even just fifty percent. Likewise, Katsuki could clear the whole city block if he chose. But they both wanted to live in the end. Training was not about testing the full limits of their abilities, but practicing coordination, reaction times, speed. He needed this.

Katsuki was now perched on top of the wall ledge, peering down with a rare broad smile. With an outstretched arm, Katsuki cocked his head with the fixed gaze of a sniper, hand curled into a ring.

“AP shot,” Izuku mumbled, and before he even had formulated a plan, his body was instinctively in motion dodging out of range of the concentrated blast. The measured voice alerting him with precise specificity of the approaching threat was almost a distracting jolt. He would need to get used to this new version of Danger Sense.

A long range back and forth ensued, each maintaining a moderate and controlled output of power. A fire flash, a blast of air—both diving and twisting to evade impact. After a few exchanges, Katsuki was on the move, approaching with speed.

Target approaching at eighty-two kilometers per hour. Impact imminent.”

Obviously. Izuku quickly assessed. He knew that angle, that bend in his torso, his extended arm. He could have dodged, could have taken to the sky. Instead he remained still, like a parked car waiting to be obliterated by a freight train. Izuku had a plan.

As expected, Katsuki grabbed hold of Izuku, the clank of metal against metal as he pulled him firmly against his chest, wedged securely beneath his gauntlet. Together they entered a kinetic whirl. For a moment Izuku almost lost track of time in the synergy of their union, Izuku tucked close against Katsuki, spinning like a toy top. His heart pounded. He had experienced this before, but never in this way. Not with the conscious layer of intimacy between them. Katsuki released his grip and Izuku was flung into the distance.

Wall approaching in three, two—”

Izuku quickly righted himself and activated his boot thrusters. Using the catapulted momentum, he swooped upward, clearing the tall wall and soaring well above the treeline to a height he hadn’t anticipated reaching in their first training session. It was exhilarating. If there wasn’t an urgency of action, he would linger at this height, take in the view. But there was a wily force of nature at ground level he was desperate to rejoin.

Izuku pivoted towards the ground, hurtling forward with a familiar speed. Katsuki was planted in a firm, squat stance with his gauntlets raised, braced for an onslaught. He’s expecting Air Force or Full Cowl. Instead, as he approached, just barely close enough in range, he released a green tendril. It wrapped around Katsuki, binding him once again to Izuku. It was a relief, knowing he hadn’t underestimated the distance. He approached his landing in seconds and retracted Blackwhip, pulling Katsuki into the air until there was no distance between them. Katsuki crashed into his abdomen and grunted. “Sorry!” Izuku yelled, worried the impact against his rigid suit was too much. Izuku slowed, this time landing upright, Katsuki lassoed at the waist in a cocoon of Blackwhip.

“No apologies,” Katsuki panted against his neck. “God, I’m so horny for you right now.”

 

————

 

Izuku stared forward with wide eyes and his mouth propped open. Speechless.

Shit.

“Fuck, I don’t mean…” Katsuki inhaled. Perhaps it was wrong to admit just how utterly captivating Izuku was, settling back into action—performing as the goddamn hero Katsuki knew him to be. But it felt so right. Intoxicating. The image of Izuku one week prior flashed before him, cheeks a messy flush, streaked with tears and resentment. “I’d be horny for you, even if you were just grading poorly written—”

Izuku didn’t let him finish, sliding an armored hand around Katsuki and drawing him eagerly against his lips. The crisp edges of metal jostled his neck brace, a slight pressure that only fueled Katsuki deeper against Izuku’s mouth. Gauntlets were ridiculously unnecessary, Katsuki decided, and he hastily flung each to the side, barely unlatching from Izuku’s lips in the process.

“You know—” Katsuki huffed between kisses and pulled off his gloves. He wanted the touch of metal against skin. “You’re always sexy as fuck to me.”

“S’okay” Izuku slurred messily against his lips. “Just kiss me.”

Katsuki grunted and drew Izuku closer against his pelvis, hands sliding along the slick segmented shell that defined Izuku’s abdomen. Katsuki’s words were true. He found Izuku sexy in any context, even in a drab gray suit with a poorly knotted tie, muttering little facts as he skimmed over journal articles. But Katsuki couldn’t deny that he was particularly aroused in this moment.

This moment. Smoldering. No, searing. Undeniably sexy as fuck.

Katsuki fantasized about this—a back and forth pursuit that ended with him pinned beneath Izuku, or wrangled by Blackwhip. Perhaps he might even collide against unsuspecting lips in a haze of Smokescreen. He silently jerked off in locker room bathrooms to the idea of this. Fell asleep to the image of this.

“You didn’t go easy this time,” Izuku said, shuffling backward several paces until he clanked against the concrete wall. Katsuki was still joined at the waist, and Izuku yanked the cord between them until Katsuki was so tight against Izuku’s armor, all he could process was his body throbbing against metal. Izuku brought his lips against Katsuki’s neck.

“Knew you—” Katsuki exhaled as Izuku trailed slowly along his jaw. “Fuck!” he grunted at Izuku’s perfect tongue, graciously meandering to greet the back of his ear. Any resolve that may have remained, quickly evaporated. “Knew you—” Katsuki began again in a broken gasp, “could handle it.”

The praise was like fresh kindling, and the contained flame between them burst into a roaring fire. Izuku groaned, pulling Katsuki even deeper against his hard pelvis.

“Watching you in your element,” Katsuki continued in a low rumble. “Made me just want to push harder,” he said, punctuating the last word with a thrust. “Make you come after me with everything.”

Izuku’s eyes pulled tightly closed. He exhaled a strangled, “F-fuck,” and squirmed beneath Katsuki’s weight.

“You’re so fucking badass, you know?”

Izuku's eyes sprung open with urgency. He had that familiar look—a determined electric pulse that would not be contained. The coil of Blackwhip cinched tighter around Katsuki’s waist, until Izuku burst forward and slipped out from beneath him. In an instant, Izuku retracted the grip of Blackwhip, spinning Katsuki in a whirl, until his back was against the wall, trapped beneath Izuku.

Izuku panted, his whole chest heaving against Katsuki. “I missed sparring with you.” His lips crashed against Katsuki’s, consuming him with a feral desperation. “If I knew in high school—,” he moaned into his mouth, “You could make me feel...” He continued grinding against Katsuki with each palm braced on either side. “G-god,” he sputtered.

High school. If Katsuki wasn’t so utterly turned on he might devolve into a self-loathing spiral. But Izuku’s lips were warm, and his tongue was doing every trick that made Katsuki painfully aware of the many layers between them.

Only now. Only this.

Izuku ripped off his gloves with complete disregard, and gripped Katsuki’s collar tight. It was barely still cool enough to justify the winter outfit, and Katsuki almost regretted the additional layer, if Izuku’s fingers clutched at the fabric hadn’t sent a fresh pulse of desire to his already aching cock.

“I forgot how fast you are,” Izuku said. “Thought I wouldn’t keep up.”

“I haven’t been properly challenged for a while…” Katsuki huffed and threaded his fingers through Izuku’s messy curls. The challenge was as much mental as it was physical, remaining alert and focused when all he wanted was to succumb to the force that was Deku. Izuku.

“I’ll beat your ass next time,” Katsuki assured with a smirk of false confidence. Even Katsuki was unconvinced he would resist the temptation to end just as he was now—his back pressed against a dingy concrete wall and an erection unbearably constrained against stiff armor.

“Kacchan?” Izuku groaned, something between a whimper and a growl. “Mmm. I want you so bad.” He recaptured Katsuki’s lips, still ravenous, but slowly lingering at his lower lip as he pulled back. “I think I have to get the suit off?” Izuku said, flushed and clearly flustered. “It’s actually really uncomfortable… down there. Like I’m trapped.”

Katsuki did not mind the idea of Izuku right then and there stripped naked in nothing but his cape. Just as he imagined so many times before.

“Suit off,” Izuku ordered into his headpiece. They waited in silence, anticipating a glowing light and a magical display of self-organized shifting panels. Nothing. “Isn’t that what I’m supposed to say?” Katsuki shrugged, unsure why the suit was unresponsive. “Suit, off,” Izuku reiterated.

Izuku was now patting himself frantically to find the backup release button. “It’s not…working?” Izuku gasped, quickly pressing buttons on his wrist in a sequence that should activate the suit to mysteriously disassemble.

“Here.” Katsuki took control, grabbing his wrist and performing the same series of actions, only to be met again with silence. His fingers curled into tight fists as he swallowed the urge to scream a rattled string of profanities. Just small details to work out, he soothed himself and forced the tension in his brow to ease.

“Why won’t it…” Izuku huffed as he twisted and fell back against the wall hunched over as he caught his panicked breath.

“Relax. It’s okay,” Katsuki assured and removed a small pin tucked into Izuku’s wrist panel. He dropped to his knees. Inspecting Izuku’s waist, he slid his fingers along the seams until he reached a discreet hole just large enough to receive the pin. With a click, Katsuki jiggled the collection of pieces at his groin until three connected panels unlatched, freeing Izuku’s half hard cock from the confines of the suit. “As if we wouldn’t design this without a backup disassembly."

Izuku sighed, dropping his head in relief against the wall. “Sorry, I just started to feel claustrophobic a-and—”

“Don’t worry,” Katsuki said, withholding his true frustration at the suit's malfunction. Katsuki continued to fiddle until the middle buckle popped off, exposing the top waistband of his underwear. Katsuki dragged his lips across the elastic. “That better?” he asked, despite the expanding bulge in Izuku’s underwear a telling signal.

“Yeah. Thanks,” Izuku panted. “You really thought of everything.” Katsuki was now trailing his nose along the exposed edges of Izuku’s groin, hot breath against the fabric. “With the suit,” Izuku added in a breathy, unnecessary clarification.

Katsuki was suddenly quite appreciative of his kneepads. He would happily devote himself to this position for as long as it took to ensure Izuku was properly appreciated in all his glory.

“God, Kacchan!” Izuku cried out.

Katsuki moved to Izuku’s hips, jostling each panel loose to expose those beautifully muscled thighs, cruelly sheathed in black fabric. “Turn,” Katsuki commanded, guiding Izuku until he was facing the wall. He needed more access and tucked beneath the golden cape. One by one, he removed the segments at Izuku’s lower back to free his perfectly round, perfectly enticing ass.

Katsuki hadn’t intended for this particular scenario when specifying a manual removal option. But the sight of Izuku clad from waist up and thighs down, his best assets framed by high-tech armour, was such an arousing vision. This was no malfunction. This was exactly right.

Izuku’s palms were splayed against the wall, rocking his hips in a shallow circle and huffing little moans of desperation. His boxer briefs were such a rude impediment to Katsuki’s lips. He needed to free Izuku, needed the taste of his soft flesh. Katsuki began to finagle the fabric over his metal clad thighs. Izuku joined, awkwardly dragging the underwear over the ridges and protrusions of his suit to fully expose his bare ass. Katsuki ran his tongue under each cheek.

“Kacchan!” Izuku whined, reaching beneath his cape to grab a fistful of blond. Katsuki grunted a chuckle and scraped his teeth in a soft nip. With a firm grasp of Izuku’s ass, he continued to trail along his defined muscle up to the dimple of his lower back.

“Love this ass!”

Izuku shuddered and spread his stance wider, bending lower onto Katsuki’s face. The elastic, overstretched around his thick armour, succumbed to the tension and snapped loose. “Fuck, just off. Need these off!” Izuku growled. He hastily yanked the underwear over the faceted metal, unbothered that the fabric snagged and fully ripped in the process.

“Holy fuck. You’re so horny!”

Izuku spun around, his cape whipping eagerly to expose Katsuki kneeling before him, his erect cock perfectly positioned at Katsuki’s parted lips. “I need your mouth, Kacchan. Need it.”

There was no hesitation, and Katsuki happily took his leaking tip into his mouth. Izuku—lightly salty with a slight metallic hint. He relished the taste. He grasped Izuku’s shaft, letting the slick of his saliva trickle between his fingers.

“You feel so good!” Izuku cried.

Katsuki took more of Izuku into his mouth, enjoying the sound of his quickening breath. He flicked his tongue against his head and gently twisted his palm as he slid down his shaft.

“K-kacch— I might… I’m so close!”

Katsuki pulled back. “What! I just started!” He fell to Izuku's thigh. “No. Not yet,” he instructed and kissed the crease of his groin. “Gotta enjoy you first.”

Izuku squirmed and rolled his head against the wall, clearly pained by the restraint. He grasped the sweat slick neck before him, shuddering as Katsuki joyously engulfed both balls with his generous mouth.

“You’re killing me!” Izuku shouted, his desperate plea a sharp reverberation against the perimeter walls. Izuku clasped a hand over his mouth. “Sorry!” He exhaled a muffled gasp. “I’ll try to be quiet.”

Katsuki slowly released Izuku from his mouth.“Relax, Deku. No one is ever on the other side of these walls. Besides—” He licked around the base of his cock. “Murder is the brand…”

Izuku chuckled, but it quickly turned into a groan as Katsuki resumed his devotion, leisurely licking the underside of his shaft. He guided Izuku back into his mouth and slowly dropped, relaxing his throat until he was filled completely with Izuku. If Izuku wasn’t going to last long, he better make it count.

His palm gripped Izuku’s hip, encouraging him to let go, thrust into him. He could take it. He wanted to take it, to be the vessel for Izuku’s pulsing need.

“Oh your mouth!” Izuku blurted, gently rocking his hips back and forth. He was still withholding from fucking Katsuki’s mouth with the intensity Katsuki knew was bubbling just beneath the surface. Katsuki gripped the side of his ass, and took him as deep as his body could withstand. Izuku’s movement halted and Katsuki savored the sensation of Izuku’s cock throbbing against the walls of his throat. Izuku was so close. He buzzed a messy hum against Izuku’s firm shaft, Katsuki’s own cock a nearly unbearable ache. He might just come himself, trapped in all his layers, like a teenager without self control.

“God, oh god!” Izuku moaned and gripped both hands at Katsuki’s collar as though clinging on for dear life. His body tensed, in a restrained quake. “Fuck, I’m gonna—”

Katsuki remained fixed in place and massaged his tongue along the increasing stiffness in his mouth. Izuku gasped a stifled shriek before his cum shot straight down Katsuki’s throat. There was no way to know, but Katsuki assumed it was ample.

Izuku released his tight grip and fell back to the wall, pulling his softening cock out of Katsuki’s indulgent mouth. His metal armor scraped against the wall as he slid down to the ground. He caught his breath.

“Great Explosion Murder God Dynamight,” Izuku murmured with a dazed smile. “You earned your title. I think I just died.”

 

————

 

Still glazed in a dreamy haze, Izuku observed Katsuki in all his sun drenched splendor, wiping the lingering mess from his chin. His lips curled into that iconic whisper of a smile, there just as quickly as it was gone. Katsuki was busy loosening his pants. It was a much simpler affair—unbuckle the utility belt, followed by each buttoned fastener. Izuku considered that he should really take over the task. Instead, he simply stared forward, distracted.

Katsuki was soon freed, and his relief was palpable, jaw dropped open with a heavy sigh. He grabbed hold of his stiff cock.

Izuku shook himself alert. “Let me take care—”

Katsuki nudged Izuku’s palm away. “No. Relax. Watch.”

Izuku was tempted to ignore the request, but the penetrating gaze of Katsuki’s crimson eyes, piercing through his jet black mask, knocked him into submission. Izuku swallowed. “You like to be watched?” he asked, as though he didn’t intimately know the answer.

“Like you don’t know.” Katsuki smirked—cocky as he stroked himself. He knew exactly what he was doing. Dynamight on his knees, in front of him like an offering. His oversized combat pants were scrunched at his thighs, inching further south as he slowly pumped his growing cock; it was a sight.

Kacchan would make an excellent porn star. A flush warmed Izuku’s cheeks. He never even watched porn. What was he thinking?

“And you like to watch.” This was not a question, but a declaration. A true declaration.

Izuku found his jaw foolishly wide, like a cartoon caricature of infatuation. He rolled his lips shut.

“Fuck, you were so hot when you came down my throat,” Katsuki said and bit down on his lower lip.

“I wasn’t too rough?”

“I can take it,” Katsuki grunted. “Almost as hot as Blackwhip.”

“You liked that?” Another obvious question Izuku knew the answer to. Katsuki didn’t reply, only increased the speed of his wrist, his broad muscled chest heaving like a sprinter at the finish line. Izuku too found his own pulse racing.

“Oh you’re so close. Let me suck you!” Izuku dove forward, not waiting for a response. He pulled Katsuki’s hand away and licked his dripping slit, teasing his head before swallowing his shaft.

“Oh my fucking g—” Katsuki threaded his fingers into Izuku’s messy curls, groaning indecipherable expletives beneath his breath. Izuku increased his pace, vibrating his own unrestrained moans of pleasure. He loved Katsuki in his mouth—the feel of his soft flesh gliding along his tongue, the warmth of his head on his lips. Every twitch. Every pulse.

“Wa-wait. Wait. Fuck, I wanna see you,” Katsuki demanded. “Really see you.”

Izuku didn’t skip a beat, and sucked deeply as he pulled off his cock. He sat upright to face Katsuki directly, now only a breath apart. He slid Katsuki into his palm and encouraged his cock rapidly in his grasp. He was so beautiful on the precipice, eyes sharply locked to his own. Unwavering. Synergistic.

“Oh fuck! I’m—”

“That’s it, Kacchan,” Izuku whispered, tugging firmly until Katsuki slumped forward. “That’s it.”

Katsuki moaned into Izuku’s ear, convulsing through his orgasm. Izuku could swear he felt the cum splatter against his armor. Impossible. He slowly loosened his grip, releasing Katsuki as he twitched through the last waves of his climax. He rolled his forehead to Izuku’s brow and gently rocked with a bleary chuckle.

“Fuck that was good.”

Izuku’s fingers drifted, stroking the damp hair at the nape of his neck.

“Deku,” Katsuki mumbled. “Izuku. Love all of you.”

Katsuki said those words with uncharacteristic frequency in the recent days since receiving the suit. He did not doubt the sincerity. But kneeling before each other, each partially stripped from their hero persona, this felt like a divine confession.

“Kacchan. Katsuki. Great Explosion Murder God Dynamight.” His voice dropped to a hushed lull. “Thank you.”

They remained fixed in a subtle sway like tall blades of grass in a light breeze. He could stay just like this, rooted in a messy microcosm. But he was suddenly aware of his exposed ass resting on the discomfort of his robust boots. He lifted upright and glanced down at Katsuki, still crouched on his knees, staring up at him with both hands planted at his waist. He was flushed, his brow dampened with a sheen of sweat.

“Let me get that,” Katsuki offered and pressed his lips to Izuku’s armor, licking the cum splattered across his metal plated abdomen. The act sent an urgent pulse, encouraging Izuku’s already half hard cock to a full stand.

“Ready for more?” Katsuki said with a devious half smile that made Izuku exhale an urgent breath.

He pulled Katsuki to his feet and onto his mouth. His loose pants slouched to the ground, and Izuku took the opportunity to appreciate his ass. Such a nice ass, both soft and muscular. He traced the shallow curve along the side of his cheek. “Why are you so hot?” Izuku asked, releasing Katsuki from his lips.

Katsuki huffed a sharp chuckle. “Born that way,” he said and rutted his soft cock against Izuku’s pelvis. “You make me hot,” he whispered in a warm breath at Izuku’s ear.

The heat between them was palpable, but the concrete was cool against Izuku’s exposed ass, squirming under the weight of Katsuki. His metal armor rocked against the wall, subtly creaking in time with his hips. Katsuki’s cock twitched awake, a growing nudge beneath Izuku’s throbbing shaft, and his breath hitched at the quick recovery.

“Ready? So fast?” Izuku exhaled, rubbing against Katsuki’s half stiff cock.

“Yeah? So, what are you gonna do about it?”

Izuku’s eyes squinted shut and pulled him in close, grinding until Katsuki was growing erect against his own length.

“Can’t fucking get enough of you,” Katsuki said and hastily recaptured Izuku’s lips, his tongue an unhurried massage so welcome—rhythmic. His fingers, tangled at Izuku’s scalp, tugged gently at his curls, inspiring a hoarse moan at his lips.

Katsuki was already leaking generously. It was unsurprising, but no less arousing. Izuku grasped both cocks in his palm, encouraging the dripping precum between their sensitive skin.

“So much,” Izuku whispered, enjoying the sensation of their cocks held together, slick and messy, his own small addition a dribble at his tip. “Love how much you leak.”

“A fucking faucet,” Katsuki groaned, rocking in synch with Izuku’s grip. “For you?” He pressed his cheek firmly to Izuku’s and exhaled. “A goddamn hose.”

“God, Kacchan!” Izuku cried. Fuck, don’t come yet!! Izuku released his grip and eased back against the wall. He swore he usually had more stamina. Right?

“You okay?” Katsuki asked, searching to meet Izuku’s gaze.

“Mmm,” Izuku nodded, catching his breath. “Just too much, too fast.”

Katsuki brushed the tousled wisps of green at his brow. Behind that jagged mask was a softness in those crimson eyes before him. Katsuki tilted Izuku’s chin and kissed him slow as molasses.

“How’s that?”

“Yeah,” Izuku exhaled.

Katsuki grabbed Izuku’s cock, gently gliding along his shaft. “Good?”

“Mm-hmm.” Izuku took him into his grasp, mirroring Katsuki’s intentional tempo. A crooked grin flickered, and Katsuki’s free hand guided Izuku’s lips to his own. It was cosmic.

Breathless.

It was grit and sunshine—a tangled knot picked apart. A roughened concrete backdrop and a crisp breeze laced with musk and the faint scent of burnt caramel. Izuku wanted all of him. The hero. The dumb boy who cared too much in all the wrong ways. Who knew what he needed, almost better than he knew himself.

Their breaths were a warm pulse in unison, Katsuki pressed against Izuku’s cheek. Izuku’s cock was throbbing under their increased pace. He could feel a shift in firmness in his grasp, Katsuki engorged and nearly ready to burst. Katsuki cupped his own tip and slicked his wetness along Izuku’s shaft. He couldn’t contain his hips, gliding their cocks against each other.

Rolling to Izuku’s forehead, Katsuki nodded rapidly, an unspoken message to shed all restraint. And so they did. Katsuki started to shake, inspiring Izuku to pump faster, his own cock rendered a pleasantly swollen spasm. It was impossible to tell who came first, warm fluid spilling between fingers in what could only be perceived as synchronicity.

Katsuki pressed firmly against Izuku’s waist, groaning uncontrollably into his ear. “Keep. Going,” he huffed, jerking against Izuku. The overstimulation was nearly unbearable but Izuku couldn’t get enough. He grasped Katsuki’s ass, pulling him even closer with a final crackled gasp. Their bodies went limp, rapid breaths tempered to stillness.

“Damn,” Katsuki chuckled and rolled from Izuku’s waist, a nimble maneuver despite the pants caught at his boots. “One for the records.”

Izuku tugged at his disheveled hair, his own dazed laugh murmured as he glanced down, his limp cock exposed, cum smeared across his armor. Katsuki, in equal disarray, pulled his pants back into place. Izuku scanned the strewn items around him. A glove skittered several paces away, a buckle at his feet, curved metal panels in scattered pieces. He bent down to the ground and picked up the torn underwear. “I can’t believe I—”

“I can,” Katsuki smirked and snatched the fabric from Izuku’s grasp. “Gotta keep this as a reminder of how much of a freak you are.”

Izuku rolled his eyes, but remained unphased, busy collecting pieces and clicking the armor back into place. “I guess there are still some kinks to work out?”

Katsuki joined in the task, turning him around and securing the panels at his backside. “Or we just leave it this way. I think I did a pretty good job freeing you.” He leaned in close to Izuku’s ear. “We should leave room for some kinks.”

Izuku squirmed and nudged Katsuki away, the brush of his lips at his neck an uncomfortable shiver.

“And when you’re not around?”

“Tch, for this? I’ll be around.”

“I don’t think we should work together,” Izuku blurted.

“Because I’m too irresistible?” Katsuki chuckled and spun Izuku around to face him.

“Kacchan, you are,” he huffed. “It’s not easy to be so turned on in this suit. And… well, I don’t think we should be distracted and—”

“Deku,” Katsuki interrupted, his mouth against Izuku’s lips an attempted distraction. “If you think you can get rid of me that easily.”

Izuku’s lips tugged into a nervous grin with a flush that chased from his cheeks to the pit of his stomach. He fell back against the wall.

“Oh you’re being serious?” Katsuki edged back, releasing the fingers that were playfully gripped at his waist.

“It’s not just…” Izuku didn’t know what he wanted, what he was saying. None of this was planned. He exhaled. “I’m my own person,” he said, surprised by the clarity he felt as the words escaped.

Katsuki stared forward. His lips parted as if to speak but rolled shut. He swallowed.

“I’m sorry!” Izuku quickly apologized. He looked so… deflated. “I don’t mean—”

“I don’t expect us to work together,” Katsuki interrupted and tugged his mask until it fell below his chin. There he was, exposed and so sincere, holding his gaze past the discomfort until there was only softness. A gentle smile emerged—a balm of reassurance. “But…” Katsuki’s lips twisted upright. “I think you need to work more on getting Blackwhip under control,” he said, his smile now unmistakably devious.

“Yeah?”

“Oh yeah. I think maybe hours of practice are in order.” He kissed Izuku, deliberate and languorous, a teasing nip as he pulled away.

“In here? This is for us,” Katsuki said and dipped his fingers into a wavy sea of green strands. “Out there?” He nodded toward the concrete enclosure. “We’ll figure that out.”

Every plan Izuku envisioned for himself over the last eight years was still a jumbled mix of unknowns. But the broad hands securely at the base of his neck, worn and roughened from years of battle, were a tender reassurance. Safe.

“I’m never going to stop chasing after you,” Katsuki promised and tilted his brow against Izuku’s. His voice dropped to a gritty whisper. “All of you.”

Notes:

Thank you for reading! I really had this one on my mind for a long time...

My life has been a little crazy lately, but I hope to have a bit more time to devote to them , because I have grown really fond and attached to this series with lots of little ideas I haven't had time to explore.

As always, there is never any pressure. But know that every single kudo and comment is so sincerely appreciated. <3

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