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Katsuki and Izuku have been dating for nearly six months. It was the blond that made the first move, confessing to his childhood friend after seeing his stupid freckled face on the cover of some tabloid with mocking red letters labeling him Japan’s number one bachelor. Originally Katsuki wanted to confess after one of them reached number one hero status, but with the rumors of abolishing the rankings spreading Katsuki decided the tabloid was a valid enough reason.
Dating Izuku is everything Katsuki could ever hope for. The once awkward and shy hero has grown into a confident heartthrob. Long gone are the days of hero Deku stuttering into a microphone. He’s an effortless flirt that makes reporters swoon along with any viewer tuning in. Izuku maintains his unruly mess of green curls with a shorter cut in his pro years, no chance of his hair obstructing his vision.
Katsuki can’t help but miss it when he craves something to wrap around his fingers when they’re making out, which is what they’re doing now. Katsuki moves to straddle Izuku’s lap but finds himself pushed away as Izuku stands and steps away from the couch.
“Oh! It’s late, I have a meeting in the morning and I still have to squeeze in a run before that,” Izuku rambles as he gathers his keys and coat. Katsuki sits in shock. “I had a great time as always, Kacchan. Thank you for letting me take you out. We should go on another date next weekend! I’ll text you!”
The nerd hardly leaves room for himself to breathe, let alone enough time for Katsuki to say a few words before he’s gone in a green flash. The blond throws his head back in exasperation, covering his eyes with his elbow and willing himself not to scream.
It’s been six goddamn months and they still haven’t fucked. It makes sense; Izuku is more gentlemanly than anyone Katsuki’s met. The bastard would throw his coat over a puddle for Katsuki to walk across if he didn’t have a quirk that allowed him to fly Katsuki over the water instead.
He’s too innocent. He probably has some holy vow to wait until marriage before ‘deflowering’ Katsuki. Izuku’s always held him as if he were made of glass. At the start of their relationship, it was endearing. No one had ever treated Katsuki with such a softness and it took some time for him to come to accept it. Now, however, he craved more.
Katsuki strips his clothes off unceremoniously and leaves a trail of fabric leading to his shower. He twists the handle to the hottest setting available and steps in before the hot water tank even has a chance to start. The cold water shocks him but does little to kill the stiffness of his cock.
He closes his eyes and pictures Izuku there with him. Feather-light touches on his body cause him to squirm as his fingers dance across his skin. Izuku’s perceptive—he’s sure to notice the sensitive places Katsuki has. He lightly pinches his nipple with his right hand and teases the head of his dick with the left.
Katsuki whimpers and bites his lip when his nails accidentally bite into his pebbled flesh. Izuku would apologize and kiss it better. Katsuki opens his eyes to find his soap and lathers a generous amount to coat his fingers. He bends slightly and uses one hand to pull his cheeks apart while the other teases his rim.
“Izuku,” he whines. Izuku would be so slow and patient with him, not doubt taking ages before offering a relieving push inside. Katsuki gasps as he works his way up to one knuckle before pulling back out. “More, give me more,” he whimpers into the empty space around him.
‘Don’t wanna hurt you, baby’ the Izuku in his mind responds. Gods, he’s so gentle it would drive Katsuki mad–madder.
Katsuki tortures himself as he slowly works up to an entire finger exploring his ass. The hot water spraying on his back is almost enough to trick himself into thinking Izuku is really there. Finally, finally, he pushes his second finger in.
“Fuck, faster,” he begs as if he’s not the one setting the tempo. He leans forward even more, resting his forehead on the cool tiles of his shower walls and letting his fingers slip a little further inside. He does quicken the pace, just a little bit. Izuku’s definitely the malicious compliance kind of guy. ‘This is faster, Kacchan.’
Katsuki’s cock throbs, twitching in the open air. He neglects it, imagining that Izuku would rather Katsuki lay back and do nothing, letting him do all the work. Katsuki wouldn’t complain, he’s always got off to Izuku’s praise alone. His undivided attention would certainly satisfy him.
An unexpected moan leaves Katsuki’s lips when the pads of his fingers slightly graze his prostate. “There, Deku, fuck,” he encourages. Izuku’s clumsy when he’s flustered so Katsuki purposely avoids the spot on his next few pumps. His eyebrows knit together in frustration until he gives in.
“Izu, more,” he whimpers. A third finger prods at his rim, unable to commit to pushing in. “Please,” he whines. Izuku can’t deny Katsuki, not when he says please in such a breathy tone. Katsuki’s third finger makes its entrance and causes the blond’s legs to shake.
How big is Izuku? His fingers certainly dwarf Katsuki’s own. Surely his one finger would feel closer to two of Katsuki’s, while two would probably be equivalent to what he’s working into himself now. Katsuki groans when he realizes Izuku would reach the place he wants with much more ease than Katsuki can do on his own.
He looks down at his cock, red and twitching, begging to be touched. Maybe Izuku would see and feel bad. ‘It looks like Kacchan’s in pain.’
Katsuki keeps working his fingers at a slow pace but uses his free hand to swipe the bead of precum off his swollen head. Izuku would taste him, he’s sure of it. Probably blubber out some sick line about Katsuki tasting like flowers or fruit, or some other sappy lie. Katsuki decides to rub the spend over his cock, hissing at the contact.
“Izuku, ‘m gonna cum if you keep that up,” Katsuki whispers. He gently wraps his hand around his dick and slowly flicks his wrist. Precum oozes out with each pump of his hand that he times perfectly with his fingers behind him.
‘Show me how pretty you are when you cum, Kacchan,’ imaginary Izuku encourages him. Katsuki quickens the pace as he chases the feeling that has begun to stir in his gut.
“Izuku, fuck, just like that,” Katsuki chokes out as his fingers target his prostate with precision. His fist glides around his cock just how he likes it. The feelings combined with the ghost of Izuku pressing into his back tip him over the edge.
His head flies back when he cums, the spray of the showerhead soaking his hair and sliding down his face. His knees wobble as he paints his shower wall in his spend before he collapses onto the harsh tile. He doesn’t stop jerking himself off until he’s practically wringing cum from his dick. He leans against the shower wall as he catches his breath.
“I gotta break this fuckin’ celibacy before I go insane,” he says aloud, like the sane person he is.
Once he’s properly showered, and maybe cums a second time with another Izuku-fueled fantasy in his mind, he crawls into bed and begins plotting. Izuku is too polite, too meek. If Katsuki’s going to have to do some minor manipulation to get pounded into the mattress, then that’s what he’ll do. He maps out a foolproof plan and sleeps soundly knowing he’s getting exactly what he wants very soon.
——
A few days pass and a highly anticipated package arrives at Katsuki’s doorstep. He damn near dances in excitement as he rushes inside. He rips away at the bubble mailer and dumps the contents on his counter. One realistic temporary tattoo, one booklet, and one bottle of aphrodisiac.
It’s the perfect plan. Sex-related quirks aren’t uncommon but Katsuki isn’t dumb enough to actually subject himself to one to get some dick. He’s merely going to pretend he’s been struck by a quirk that’s imprinted a womb tattoo on him. The booklet is a special pamphlet the hospital provides to victims of the real thing just to up the ante.
Katsuki turns the small bottle over in his hands. The riskiest part of all of this is properly mimicking the symptoms. Lust induced via quirk isn’t something Katsuki trusts himself to naturally imitate. This bottle of small pink pills should be enough for Katsuki to pull the wool over his boyfriend’s eyes.
He almost feels bad… almost. The number of times Izuku’s left him with blue balls in the last six months is enough to erase any true feelings of guilt. If he knows his boyfriend, and he does, once he gets over this mental barrier of their first time, things will be smooth sailing. After that Katsuki will come clean about the whole trickery and surely be forgiven.
Katsuki opens the packaging of the tattoo and uses a wet rag to apply it to his lower abdomen. While that soaks into his skin, he uses his agency account to put in a request for a few days of vacation. It’s the first time he’s used it in months, so he doesn’t worry about getting away with asking on such short notice. Besides, if he planned ahead he risks Izuku catching wind of his ‘mini vacation’ and ruins the whole randomly hit by a quirk rouse.
Once he’s checked that the ink is no longer on the paper it was attached to, he takes the recommended dose of the aphrodisiac. Excitement flutters in his chest as he shoots Izuku a text and hides the bottle of pills.
Katsuki: hey. got hit by a shitty quirk in a grocery store. come over.
stupid nerd 💚: Kacchan, are you okay? Do you need me to get you anything? Should I call the agency for you? I could call in a favor to Eri and see if she can rewind you if it’s uncomfortable. Have you been to the hospital? Do you need me to take you there?
Katsuki rolls his eyes but a soft smile breaks on his lips. That small warning bell in his mind that tells him this is fucked up to do to such a sweet and devoted boyfriend begins to chime, but Katsuki ignores it. It’s for the greater good of their relationship.
Katsuki: just get over here before i ask someone else.
Katsuki tosses his phone on the other side of the couch and makes sure all the trash from his setup is discarded. The air around him starts to feel warm and his tank top begins to cling to his skin. He starts to feel restless and continues to pace around his apartment to pass the time.
It takes nearly thirty minutes until there’s a knock at Katsuki’s door. The blond is seated facing the doorway, hand shoved down his sweatpants and the hem of his top between his teeth. The shit he bought is no joke—he’s not been this horny since he was a goddamn teenager with unrestricted internet access.
Izuku must get the hint when Katsuki doesn’t answer the door because he uses his spare key to let himself in moments later.
“Kacchan! I grabbed you some of that spicy tofu you like, I was out to dinner with some friends when you messaged and—oh, fuck.”
The curse word leaving Izuku’s lips really grabs Katsuki’s attention. Katsuki stares at him through his long lashes, eyelids heavy. Seeing Izuku turns him on even more as if that’s possible. Katsuki stands up, a little shaky because all of his blood has rushed to his dick, and stumbles towards his boyfriend.
“Kacchan, you’re, um,” Izuku’s eyes flick between Katsuki’s face and the tent pitched in his pants, blushing like a damn tomato and trying not to stare.
“Izuku, you gotta help me,” Katsuki whines, trying to sound as seductive as he can. He reaches for Izuku and wraps his hands around his neck once he's close enough. He groans when his erection presses into Izuku’s leg and his hips move on their own to buck into his muscular thigh.
“Kacchan!” Izuku tries to push Katsuki away but the blond holds strong. “What’s going on? Is this because of the quirk? You shouldn’t have called me over! You could just touch yourself on your own, couldn’t you?”
Katsuki tries to not feel hurt by Izuku’s words. He knows the nerd is shy, but damn. “No, fuck, need you,” Katsuki pants out with labored breath. He read on the bottle that the aphrodisiac was made to imitate the quirk he was replicating, but he didn’t expect it to be so real. He assumed he’d have to play it up a little, but his desperation right now is 100% real. “Pocket, reach in my pocket.”
“Kacchan, I’m not falling for that. If you’re asking me to touch your c-cock,” his voice cracks and Katsuki growls in frustration.
“No, idiot! Pamphlet. Read, fuck,” Katsuki manages to fish the book out of his pocket and shove it in Izuku’s hand before he falls to the ground.
He’s not even fully aware that he’s grinding his clothed erection on Izuku’s socked foot, he’s just blindly chasing any relief. He feels sweat dripping down his brow as he leans into Izuku’s strong leg. From the corner of his eye, Katsuki notices Izuku’s pants hugging him a bit tighter than usual.
He reaches up to cup Izuku’s bulge with his hand but gets smacked away. “Kacchan! You can’t just grab me.” Izuku looks down at Katsuki with a stern stare. Katsuki juts out his lower lip in a pout and bats his eyelashes. “Don’t give me that look! It says here that orgasm is the best relief, right? So there’s no need to touch me!”
“Want to,” Katsuki rebuttals. “Need you, Izuku, wanna feel you, wanna touch you, want you to fuck me. Be my hero and save me,” he adds on just to really get under Izuku’s skin.
Izuku pinches his brow in exasperation and sighs. “Kacchan, go take a bath, okay?”
Katsuki perks up. “So you can fuck me after?”
“No, Kacchan, you aren’t in a clear headspace so I’m—”
“You’re leaving me!” Katsuki realizes and tightens his hold around Izuku’s leg. “Izuku, you dumbass, don’t you dare or I’ll call someone else! Don’t think I won’t you shitty—”
“Kacchan, I’m not leaving. I’m going to get the food put away and call in for work. You are not calling anyone else.” Izuku’s eyes darken and Katsuki shivers. “I know you’re hurting, baby. Can you be good and go start the bath for me?”
Katsuki’s chest flutters as he nods dumbly. He winces as he peels himself away from Izuku’s leg and shuffles back to the bathroom. The heat under his skin is really becoming too much to bear so he tugs off the tank top that’s practically soaked through anyways and kicks off the sweats as he trails through his apartment. Because Izuku’s so apprehensive, Katsuki decides to leave his briefs on for some illusion of modesty until he’s able to hide under some bubbles. He hopes that leaving something to the imagination is able to entice his boyfriend, especially considering he has Deku-branded briefs clinging to his skin.
Katsuki doesn’t bother shutting the door of the bathroom as he turns the tap. He struggles to stay focused and would rather just sit and touch himself, but Izuku’s praise still echoes in his mind and he’s desperate to hear more. He adds bubbles and rose petals to the filling tub—things he bought with a romantic night with Izuku in mind. Damn near five months they’ve sat in his cabinet collecting dust so he might as well put them to use.
The tub is almost full when Katsuki hears Izuku walking towards the bathroom. He peels off his final layer of clothing and steps into the hot water. It feels surprisingly comfortable given that his skin is already on fire. Katsuki sinks into the water, only keeping his nose, eyes, and hair above the bubbles. Izuku walks in and sighs in relief.
“How’s the water, Kacchan? I read in that pamphlet that a hot spring could bring relief and thought this would be the next best thing in such a short notice.”
Katsuki tilts his head back until his mouth breaks the surface of the water. “The best thing would be you touching me but this is alright, I guess.”
Izuku dips his hand into the bubbles and Katsuki’s heart jumps with excitement before he’s being splashed in the face. Izuku’s laugh is almost enough to make up for the water dripping from his blond spikes.
They enjoy each other's company and, honestly, Katsuki somewhat forgets about his predicament. Izuku is even so kind as to wash Katsuki’s hair, scarred fingers massaging his scalp and scrubbing away the tension Katsuki didn’t realize he was carrying.
The itch under his skin begins to return as the water cools and it is obvious that Izuku is noticing as well. The taller man unplugs the drain and stands up to grab a towel for Katsuki. He holds the fluffy fabric open and encourages Katsuki to stand and go into the promised embrace.
The open air is cold, but Izuku wraps his arms around Katsuki and the towel combined with his body heat acts like a warm blanket. Desire stirs in Katsuki’s gut, like the passion is coming in waves and it’s once again high tide.
Izuku takes care to wipe the towel over Katsuki’s sensitive skin. He dries his shoulders and arms as well as his back. He pulls away to throw the towel over Katsuki’s head, rustling his hair to absorb most of the water.
He carefully swipes the towel over Katsuki’s chest. It’s as if he knows the blond has sensitive nipples on a good day because he skillfully avoids them. He bends to better dry Katsuki’s stomach, also dodging his flagging erection, but pauses before moving towards his legs.
“Kacchan, what’s this?”
Katsuki furrows his brow and looks down. “The stupid quirk, didn’t you read the pamphlet?”
Izuku looks up at him with a hardness behind his usually sparkling eyes. He drags the towel over Katsuki’s abdomen again and thrusts it up right under Katsuki’s nose.
It takes a moment for his eyes to focus on something so close, but his blood runs cold when he sees specks of black ink dirtying the white cotton fibers.
“Izuku, I can explain—”
“Is this a fake tattoo, yes or no?”
Katsuki swallows down the anxiety that begins to flood his lungs. He’s too stunned, too ashamed, so he only nods meekly in response.
“What’s actually happening here, Kacchan? Why are you lying to me?”
Katsuki’s heart aches. This was supposed to be fun and sexy and an easy way to get their first time over with. “Izuku, fuck, listen, I know you’re nervous about us fucking for the first time so I thought I could take the pressure off of you!”
Izuku doesn’t say anything and it only fuels the anxiety in his chest. Katsuki reaches out for Izuku but he just stands and leaves the room.
“Izuku!” he calls out, wrapping the towel around him and running after his boyfriend. He finds Izuku in the kitchen adding ice to a glass and filling it with water. Silently he thrusts the cup into Katsuki’s hands and it makes Katsuki realize how much he’s shaking,
He follows the wordless command and downs the glass, focusing on the cold sensation spreading throughout his upper body. Izuku watches him without any interjection and an unreadable expression. Katsuki focuses on the water instead of worrying himself into panic. If Izuku was truly upset or disgusted with him, he’d have put on his shoes and left by now.
“What’s got you acting this way?” Izuku asks when there’s no more water for Katsuki to hide behind. The blond hangs his head and opens his junk drawer and retrieves the remaining pills. Izuku takes his time to read the bottle while Katsuki waits in anticipation.
The worst of it all is that the pills effect is still in full swing. Katsuki knows that the towel around his waist does nothing to hide his seemingly permanent erection. He tries not to think about how the humiliation only makes him more excited.
“So,” Izuku breaks the silence as he sits the bottle down and closes the distance between them. “You cooked up this whole scheme, lied to me, drugged yourself, and put yourself in this,” his eyes flick down to Katsuki’s cock and back up to lock eye contact, “embarrassing predicament because that’s better than, oh, I don’t know, talking to your boyfriend?”
Katsuki takes a step back. “Oh, that’s rich coming from the guy that darts off the second I sit in his lap! The hell you want me to do, strap you down and ask you why you won’t fuck me? You can even say cock without stuttering!”
Izuku takes another step forward. “I can say cock!” His face turns bright red again but he continues. “I didn’t know Kacchan was ready for that s-stuff!”
Katsuki takes another step back. “Cut the shit, Izuku! I throw myself on you every chance I get and I’m literally pushed away.” He tries to ignore the tingling of his nose and the prickle of his tear ducts. “Just give it to me straight! Tell me you don’t want me so I can stop making a fool of myself!”
Izuku steps forward. Katsuki steps back but is stopped by the kitchen counter digging into his spine. Izuku moves forward again, pinning him in place with no space between them. Katsuki wills himself to ignore Izuku’s thigh against his boner but fails to anticipate Izuku grinding his leg harshly against the blond. He tries to swallow the moans but Izuku repeats the motion and a strained cry slips past Katsuki’s lips.
“Kacchan,” Izuku utters his name in a tone he’s never heard from the taller man. Katsuki looks up at him and truly takes him in for the first time since leaving the bath. His pupils are blown with lust, sweat gathering at his brow, and his blush consumes all of his exposed skin. “I don’t think I can put into words how much I want you.”
His left hand latches onto Katsuki’s hip, his dull nails biting into Katsuki’s soft skin. His right hand cups the blond's cheek, his thumb trailing along Katsuki’s lower lip while his eyes follow the motion with a starved look. Katsuki swallows, his adams apple bouncing and grabbing Izuku’s attention. His hand trails down, ghosting over Katsuki’s throat before feeling down his neck, his shoulder, and finally settling behind his back.
“It terrifies me, Kacchan,” he says, his voice broken as he barely speaks over a whisper. “I keep dragging myself away from you because I want to destroy you. I’m so scared of h-hurting you, Kacchan.”
His nails bite into Katsuki’s skin for emphasis but the blond remains unphased. He stands his ground, desperate to show Izuku that he can handle it.
“Then hurt me,” Katsuki challenges. Izuku looks at him horrified. “Relax, nerd, you think you can shake me off that easy? Hurt me. What are you so afraid of? Do you see a fragile warning on me?”
Izuku shakes his head. “I—I love you, Kacchan. I can’t… I don’t want to-”
Katsuki puts his hands on the counter and pushes himself up to cut Izuku off with a kiss. He’s stunned at first, but quickly Izuku meets his level of passion and uses his hold on the blond to pull him impossibly closer. Their mouths melt together with the heat of a thousand flames, passion growing and consuming one another.
Katsuki grabs Izuku’s hand on his hip and pushes it down until the taller man is cupping his ass. He lifts his leg to wrap around Izuku’s waist. He understands immediately and lifts Katsuki effortlessly, locking his legs around his waist and moaning when Katsuki ruts into his strong core.
Katsuki bites his way over Izuku’s jaw, leaving chaste kisses along the shadow of dark stubble that’s grown in from the last time he has shaved. “Izuku, bedroom, please,” Katsuki begs, biting on Izuku’s earlobe for good measure.
To his honest shock and overwhelming delight, Izuku listens. He runs them to the bedroom in a flash and Katsuki swears he sees a quick spark of his quirk to speed up the pace. The reality of the situation seeps in, however, apparent by Izuku’s hesitation at the foot of Katsuki’s bed.
The blond sits up in Izuku’s arms and gently holds his freckled cheeks in his calloused hands. They stare at each other, out of breath from the kissing and the quick sprint through the apartment. They communicate without words—something they mastered even before their relationship became official. A smile breaks across Izuku’s lips and his uncertainty melts away.
Another flash of green floods the room and in a blink, Katsuki’s on his back staring at the ceiling. Izuku’s on him immediately, pressing his body into the mattress and knocking the air from his lungs. With their bodies so close, Katsuki’s reminded that the only thing he has to hide behind is a thin towel that’s miraculously still slung around his hips.
“Off,” Katsuki insists as he tugs on Izuku’s shirt. The taller man ignores him, more focused on sucking damning marks across Katsuki’s chest than any words that come from the blond’s mouth. He grabs a fist full of short green curls and harshly pulls Izuku off of him, forcing a wince from him. “Off,” Katsuki insists again, moments from blasting the offensive t-shirt.
“Impatient,” Izuku tsks but he sits up and reaches behind himself, grabbing the back collar of his shirt and pulling it off in one smooth action.
Katsuki gasps, genuinely struck by Izuku’s physique. He’s seen the nerd shirtless more times than he can count between locker room changes and late-night sparring matches, but in this setting it’s different. His body is littered with scars, some still pink marking their freshness. Through bedroom eyes, they look like a map Katsuki wants to learn by memory with his tongue.
“I’ve done my waiting! Twelve goddamn years of it!” Katsuki yells but his voice can’t seem to spit out the usual grit with his words.
“Okay, dramatic, much? You’ve not been waiting since we were teens, Kacchan,” Izuku laughs as he tugs off his slacks. Katsuki’s so distracted by the tight boxers leaving hardly anything to the imagination that he almost forgets to reply.
“It’s called a sexual awakening, dumbass. I’ve wanted you to fuck me since I jacked it to—”
“Please!” Izuku interrupts as he hides his red face behind his elbow. “Please don’t finish that sentence, I’m already losing my composure, Kacchan.”
Katsuki smirks and folds his hands behind his head, stretching out to offer himself like a buffet. He spreads his legs, finally moving enough for the towel to fall away and for his cock to bob in the cool air. He rolls his hips, nudging himself closer to the edge of the bed. Izuku’s eyes shamelessly scan Katsuki’s body and he swears he can taste Izuku’s desire in the air around them.
“No need to hold back,” Katsuki assures him. “Show me you were worth the wait, Izuku,” he says as he sits up and gives Izuku his best fuck-me eyes, kissing along his abdomen and teasing a finger under the waistband of Izuku’s underwear. Just when he starts to tug the elastic down, tendrils of blackwhip snake around his wrists and pull him away.
He’s pulled until his back is against the mattress again, wrists pinned above his head. Two more tendrils wrap around his thighs, pulling his legs open and leaving him completely exposed. “Oi, what are you—mmph, fuck!”
Katsuki’s voice catches in his throat when Izuku drops to his knees and buries his face between Katsuki’s cheeks. His tongue teases his hole and it makes Katsuki keen. He’s so much more sensitive thanks to the aphrodisiac and it makes him thrash, but the restraints hold him still. Katsuki whines when he can’t even grind into Izuku’s mouth.
Izuku looks up at him, his eyes dark and clouded, eyebrow quirked up as if to mock Katsuki. He can practically hear the ‘Can’t handle it, Kacchan?’ even though the nerd’s tongue is shoved inside his ass. Katsuki throws his head back to break eye contact, feeling overwhelmed and touch-starved all at the same time.
“Izuku, fuck, just use your fingers already, don’t make me wait any more,” Katsuki pants as he flexes his fists and struggles against blackwhip.
It’s stronger now than Katsuki’s ever noticed, almost like Izuku’s deceived him for years when using it in sparring battles. A fifth tendril materializes from behind Izuku and slithers up Katsuki’s body, winding over the valleys of his muscles, teasing and flicking his nipples, curling and squeezing around his pecs, trailing up over his neck and ghosting over his lips.
Katsuki squeezes his lips shut to keep the invasive quirk out, but the end of the whip is narrow and manages to slip in regardless. It’s an extremely foreign feeling—it’s like a physical embodiment of TV static on Katsuki’s tongue. It fills his mouth quickly, rubbing his teeth and his gums and twirling around his tongue like the whip is making out with him. Katsuki moans when it prods his throat and only then does he notice that Izuku has stopped and is panting with his forehead pressed against Katsuki’s thigh.
“Kacchan, your mouth feels so good,” he moans and takes a moment to reach for the lube on the bedside table. Katsuki watches him closely and experimentally swallows around the whip in his mouth. “Fuck,” Izuku says in a breathy tone as his eyes roll backward.
It clicks. Izuku can feel with that blackwhip of his.
Katsuki smirks around the erogenous whip and proceeds to bob his head with the limited movement he has, swallowing as the tendril throbs in his throat. Drool runs down his jaw but he doesn’t relent, enjoying how reactive Izuku is. He’s never sucked an actual dick before, but he’s had plenty of practice with a very loved dildo he hides under his bed. He moans again, but Izuku dispels the whip.
“Kacchan, I don’t want to cum yet,” he explains with a distressed tone. Katsuki can’t believe his ears—he almost made Izuku cum without even seeing his cock yet.
Without warning, Izuku slips two lubed fingers past Katsuki’s rim. His previous predictions of Izuku’s mannerisms couldn’t be more incorrect. Izuku is fast and hard, pistoning in and out of the blond like he’s being timed. There’s no begging Katsuki needs to do for another finger because as soon as the two are gliding in and out without resistance, a third is added.
“Izuku, fuck, s-slow down,” Katsuki pleads, feeling his own orgasm building in his gut. Izuku looks at him with understanding, but he doesn’t slow down. He wraps his free hand tightly around the base of Katsuki’s cock, preventing any release. “Hey, you asshole! I was close!”
“Greedy, Kacchan,” Izuku reprimands, his attention fully focused on Katsuki’s hole stretching around his fingers. “You’re sucking me in so well, begged me for so long to be fucked, why don’t you let me make the decisions now, hmm? I decide the pace. I decide if and when you cum. I decide everything, or I stop.” Only now does Izuku flick his eyes up to look at Katsuki.
Katsuki swallows and he swears he still feels the phantom of blackwhip in his throat. This is nothing like the Izuku Katsuki has imagined in his many steamy showers or late nights buried under his covers. There’s a hunger in Izuku’s eyes, a hunger that feels like it would consume Katsuki and pick at his bones for any remaining taste.
“Okay,” Katsuki hears himself agree without knowing he even opened his mouth. Izuku smiles at him like he gave the correct answer and Katsuki shutters at the thought of what he would say to the incorrect answer.
Izuku resumes, the only sounds filling the room being the squelching of his fingers thrusting in and out of the blond and Katsuki’s whimpers and moans. He feels blackwhip tighten around his thighs every time he inadvertently moves his hips, but the bite into his skin helps ground him.
Izuku’s fingers are large and long; they fill Katsuki so much more than he’s used to and his prostate gets stimulated time and time again. Izuku also keeps a vice grip around his cock. Precum still leaks onto his stomach, but there’s no hope of cumming while he’s being held like this. Tears form in Katsuki’s eyes and against his better judgment, he asks for more. At this point, he isn’t sure what he wants—another finger? The hand around his cock to jerk him off? For it to squeeze harder so he doesn’t cum? Regardless, Izuku doesn’t give it to him. In fact, he removes his fingers altogether.
“Just a little bit more, baby, you’re almost ready for me,” Izuku coos at him while drizzling more lube over his empty hole. Katsuki feels more stretched than he’s made himself, his asshole fluttering as he tries to take calming deep breaths. “Don’t wanna hurt you,” he explains. Katsuki feels warmth in his chest, happy he was right about this aspect of Izuku. “Not for the first round. Need to enjoy you a few times before you make me stop,” he adds with a dark chuckle.
Maybe Izuku was right, Katsuki thinks to himself as his boyfriend thrusts four massive fingers inside of him. In romance, Izuku is a giver. He gives anything and everything he can to Katsuki, entirely selfless. As a lover, however, Izuku feels selfish. He’s damn near using Katsuki and the feeling excites the blond in a way he never expected.
Izuku lets out a frustrated sound and stands up. “Don’t think I’m giving in because of your begging, Kacchan,” he says as he uses blackwhip like puppet strings to tug Katsuki and flip him on his stomach. “I, erm,” he laughs while his hands latch onto Katsuki’s hips and pulls his ass into the air while his chest and face stay pressed to the mattress. “It’s silly, but I’m so jealous of my fingers,” Izuku admits.
From this new position, Katsuki can only see his pillows and the headboard of his bed so it’s a complete surprise when he feels the hot head of Izuku’s cock teasing his hole. Izuku doesn’t press forward but just rubs his tip between Katsuki’s lubed cheeks. It feels like a challenge, like he’s taunting Katsuki into begging so he can reprimand him again.
“Should let me film this sometime,” Izuku muses. The feeling of his cock disappears before it lands on Katsuki’s hole again with a SMACK. Katsuki moans nearly as loud as Izuku does. “You really are desperate for me, huh, Kacchan?”
Katsuki nods, his hair no doubts being ruined by the sheets he’s pressed against. To emphasize his want, no, need, he pushes back all that he can, feeling the head of Izuku’s cock nearly press into him. He whimpers when Izuku pulls away, but he’s not left wanting for long.
Izuku surges forward, impaling Katsuki on his cock and digging his fingers into Katsuki’s hips. The grip is bruising but it’s nothing in comparison to the sudden stretch of his ass accommodating Izuku’s dick. Katsuki still hasn’t had a proper look at it, but based on feeling alone it probably constitutes as a third leg.
There’s no air in Katsuki’s lungs and he swears his eyes are close to bulging out of his skull. Izuku is merciful, at least, in that he just holds himself fully seated and allows Katsuki to adjust. The blond can feel his heartbeat pulsing around Izuku’s dick, the burning stretch slowly becoming more tolerable.
“Izuku, please, touch me while I catch my breath,” Katsuki barters. He wants to demand it, but he phrases it as a question instead in hopes of Izuku being understanding.
Maybe Izuku is a generous lover after all because his large hand wraps around Katsuki’s cock and all feelings of pain dissolve. Katsuki melts like putty in his grasp, whining and moaning as his hips move on their own. He thrusts into Izuku’s hand which allows him to slowly move around Izuku’s dick.
Izuku entertains him for a moment, giving him an illusion of control. Katsuki falls into his own rhythm, slow and sensual, allowing himself to feel every inch of Izuku and lose himself in the pleasure. He works up the tempo, feeling more confident with each move.
Just when he’s starting to lose himself in the feeling, blackwhip tightens around him again and holds him in place.
“Seems like you’re well adjusted, Kacchan,” Izuku whispers in his ear, his chest pressed to Katsuki’s back. “Be a good boy and let me take over,” he commands and Katsuki can do little to deny him,
Izuku’s palm presses between his shoulder blades, pinning him down as he starts to move his hips. The gentle Izuku of Katsuki’s imagination is long gone, replaced with a beast of a man. He drills into Katsuki, his balls smacking into Katsuki’s own with each thrust and echoing throughout the room.
“Gods, Kacchan, you’re taking me so well,” he compliments. Katsuki smiles dumbly into the sheets and just takes takes takes.
Izuku’s hips are strong, slamming into Katsuki repeatedly without faltering. He angles himself perfectly as if he knows all of Katsuki’s inner workings without any prior experience. The worst part is Katsuki knows he isn’t trying to please him. Izuku’s chasing his own high and Katsuki’s just lucky their pleasures align so well.
“Kacchan,” Izuku pouts and pulls Katsuki off the mattress. “Wanna see your face,” he explains as he pulls out.
Katsuki protests, pushing back to try to get Izuku to continue. Izuku shushes him and runs smoothing hands over his clammy skin. Blackwhip helps him in rolling Katsuki onto his back and then recedes completely.
“Wha-?” Katsuki tries to ask why the whips are gone, but his voice refuses to cooperate. The ghost of the restraints remains, but Katsuki finds himself missing the constant pressure around his wrists and thighs. He’s working up the nerve to as for them back, but when he looks at Izuku with half-lidded eyes, all of his confidence dies.
Katsuki has seen porn. He’s read shitty fanfics that describe cocks in comparison to soda cans or water bottles. He’s received emails that promise to grow your dick to three times its original size. All of that shit has lived in the same place in his brain: pure and utter delusional fantasy. But when he sees Izuku’s cock for the first time, he starts to think that maybe it wasn’t too far off from reality.
“That was inside of me,” Katsuki observes with awe and a little bit of fear. Izuku smirks at him.
“And you were crying for more when I pulled out, huh?” Izuku teases as he drags his scarred hand over his ridiculous length.
Katsuki can’t help but stare. He knows his own hand would look so comically small attempting to wrap around Izuku’s cock. Even his hands, much bigger than Katsuki’s own, fail to completely wrap around the hefty girth.
“I love that look on your face, Kacchan. Don’t worry, we already know you can take it.”
Izuku’s hands push Katsuki’s legs apart, scooting closer and lining himself up with Katsuki’s hole. Somehow seeing it happen is worse, like the clear image of Izuku’s cock will miraculously hinder its ability to fit. Izuku doesn’t share this apprehension, obviously, as he slides in with one quick thrust.
Katsuki jerks from the intrusion with no whips holding him in place. Izuku takes hold of his wrist and it gives Katsuki the same grounding sensation, but the warmth of his hand is a thousand times better. Izuku picks up right where he left off with a pace that leaves Katsuki gasping for air.
“Kacchan, Kacchan,” Izuku mummers, using his hold on Katuski’s wrist to guide his hand to his stomach. Katsuki’s brows knit in confusion but then Izuku moves again and he feels it under his fingertips. “That’s me inside you, Kacchan. Watch,” he insists and he pins Katsuki’s hand back to the bed.
He starts thrusting again and Katsuki watches with wide eyes as his stomach bulges in tandem. The visual is enough to fuel the fire in his core. With his one free hand, he reaches for his neglected cock, but Izuku notices and immediately halts his movements. He leaves only the head of his dick inside of Katsuki and it makes the blond squirm.
“Kacchan, you don’t need to do that,” Izuku tells him with a sinister tone. He grabs Katsuki’s straying hand and pins it along with his other hand, using a fearsome grip to keep him pinned in place. Katsuki wouldn’t be able to fight it even if he wanted to.
“Izuku, ‘m so close, wanna cum,” he whines, attempting to move in any capacity but held tightly under Izuku’s hands. “Fuck, just keep fucking me, I need your cock, wanna cum so bad,” he begs, muttering like his boyfriend typically does.
Blackwhip shoots out again but goes straight for his dick. The tendril coils around his shaft and squeezes just enough to make Katsuki wince. The familiar feeling of the tip of the whip intruding Katsuki happens again, but it’s not his mouth being violated this time.
The tendril slowly pushes in until it slips past the slit of Katsuki’s dick, shrinking itself until it perfectly fills his cock. All previous feelings of impending orgasm disappear and are replaced with the feeling of overwhelming fullness.
“Kacchan, you’re so tight,” Izuku moans as he begins to thrust again. Katsuki’s honestly amazed he still has the stamina to buck his hips as fast and as hard as he has been this entire time. “Wanna fill all your holes, want you to be overflowing with me. Want you to have me in you at all times so that you’re desperate for me when I have to pull out.”
“I already am,” Katsuki chokes out. His body aches and screams for release, but he’s held in a stasis waiting for Izuku’s permission to cum. “Already desperate, fuck.”
This new position has incredible advantages. Not only can he watch Izuku to see how close attention he pays to his dick going in and out, but Katsuki can appreciate the way he bites his lip and pinches his brows as he loses himself in pleasure.
“Kacchan, when you say things like that I just want to fill you with my cum,” Izuku whines like a child that’s been told it’s time to stop playing and to go take a nap.
“Please, fuck, cum inside me, I need it,” Katsuki’s begins to ramble again, repeating himself until he’s breathless.
It has the desired effect because Izuku’s hips stutter for the first time and blackwhip slides out of his cock and loosens its grip. It doesn’t release him entirely, but rather begins to jerk him off in time with Izuku’s thrusts.
The pleasure vibrating through Katsuki’s body after so much neglect and denial rockets through him and it only takes a few tugs before he’s shooting cum all over his torso. He feels himself clamping around Izuku and the taller man certainly feels it too because he slams in a final time and drops himself closer to Katsuki.
Their lips meet in a messy clash as Izuku cums, his heavy cock twitching as he spills inside of Katsuki. They bite and suck each other’s lips and tongues as they ride the waves of orgasm together. Katsuki cries as blackwhip continues to overstimulate him despite having no more seed to expel.
“Izuku,” he cries but he’s ignored, Izuku preferring to lick away his tears as he continues to gyrate his hips and milk his cock.
“Shh, baby, just let me finish,” Izuku soothes him as he gives a final few thrusts.
Katsuki feels a fullness he’s never experienced before and moans in relief when blackwhip dissipates again. Izuku is all over him after that; kissing his wrists, his face, his neck. Izuku massages Katsuki’s skin while the blond bathes in the special treatment.
“So good, Kacchan, you did so good. I’ll let you relax for a little while before we go again,” Izuku promises with a kiss to his temple.
Katsuki’s too fucked out to really understand Izuku’s words, but he nods dumbly in agreement. He’s conscious enough to realize that Izuku is softening inside of him and he whimpers as his feeling of fullness decreases by the second. When Izuku actually pulls out, he panics.
“Shh, shh, Kacchan, I got you,” Izuku reassures him. His crooked fingers scoop any escaping cum before they’re replaced with a new tendril of blackwhip that acts as a custom fitted plug, keeping him just as full as he desires.
“‘Zuku,” Katsuki slurs as Izuku rolls off of him and pulls him close, his head resting on Izuku’s chest. “Can’t believe you were holdin’ back on me for so long,” he laughs, nuzzling his face into Izuku’s pec.
“Oh, Kacchan,” Izuku hums and pets his hand through his soft blond spikes. He kisses the top of Katsuki’s forehead, smiling against his clammy skin. “You haven’t even had a proper taste of everything I want to do to you,” he says darkly as his hold around the blond tightens.
Katsuki swallows and looks up at Izuku to see a feral stare full of promise.
“Besides, I still have to punish you for lying to me, don’t I, Katsuki?”