11

This has been a very confusing time for Izuku.

He glances at Katsuki, dozing off under his airplane-provided blanket. His step-brother insisted on the isle seat because 'I need to stretch my fucking legs out, not that you'd get it, Oompa-Loompa-looking ass-motherfucker' but he's basically falling into the isle, his body swaying side to side like some kind of buff palm-tree.

On the one hand, he's elated. Not about the Oompa Loompa comment. Despite how annoying and mean Kacchan can be sometimes, Izuku hasn't ever met someone else like him. He's never had this magnetic pull to another person, mentally, physically, spiritually… obviously, sexually.

Despite his very at-Izuku's-sake humor, Kacchan has infinite amazing qualities. He's worked so hard for everything he's achieved, blew past even his top rivals. Izuku doesn't even mention that he was the salutatorian, just a step behind Kacchan. It's a top notch achievement, one that no one expected from the quiet kid with no friends and an obsession with video games and comic books. Izuku takes pride in the fact that he surprised everyone with his silent success. Even so, despite this, despite the fact that he went to college on a full scholarship, despite his own growth over the past three years, Izuku admits… Kacchan's light simply shines brighter than his. Izuku's not even mad about it. Actually, it makes him want to fight harder, be better, grow stronger. Kacchan makes him so… so proud.

He's was even proud, despite himself, to be Katsuki Bakugou's rightfully-appointed booty-call. Katsuki can choose anyone, but he chose him. Izuku never thought too hard about why. In his mind, Izuku climbed through the ranks, achieving title CEO of Cock-chan with unprecedented speed. However, much like any CEO, maybe he's become a little removed from the original goals of the company. He just loved Kacchan from afar, rather than get his hands (and most other body parts) dirty and really work for it. Now that Izuku's gotten back to the position that he belongs in, well. Its clear that passion and Kacchan are synonymous to Izuku. And, wow, it surely has been passionate. With a capitol P.

Izuku can't stop his brain from reeling. That vacation was, um…Izuku blushes at the very thought. It was very… enlightening. Kacchan clearly releases some kind of 'make Izuku into an insatiable deviant' hormone, because... Wow. Izuku Midoriya would never, ever, ever even consider jerking someone off in the ocean with families all around them, sneaking out in the middle of the night to have sex on the beach when the two of them hadn't had a moment alone all day (bad idea. Izuku's still getting sand out his ass… The grittiness…) and he definitely, definitely didn't think he'd get so turned on by his step-brother spitting his own jizz into his mouth after sucking him off in the bathroom of a hotel lobby. But. Well. Here they are. Izuku rubs his face with his hands, willing for the burning shame and underneath that, giddiness, to go away.

Who even is he when Kacchan is around? Sure, he can say that he just got swept up in the moment, powerless against the gravity of Kacchan's black hole (phrasing?) but that would be a straight-up lie. He's actually instigated some of the above. He definitely instigated the video that sits, very encrypted, in Izuku's phone. His eyes open wide as the memory plays back in his head. He doesn't think he'll ever be able to watch it. He would just… just die from embarrassment. All the blood in his body would leak out into his skin in the world's most aggressive blush, and he'd die, a shallow husk of a dirty, perverted man. Oh, god, what has he done? Has he gone off the deep-end? Why the hell did he even suggest that??? Why did Kacchan go along with him!?

Here's the truth that Izuku is having a lot of difficulty with grappling.

No matter what they do, no matter how much they touch, no matter their proximity, its never enough. He wants to crawl under Kacchan's skin. He wants to be hurt, to be marked, to be destroyed by him. He wants, desires, craves so much that he physically aches with it.

In short? Yikes.

He's insane, right? This isn't a normal way to feel, right?

This is some Fatal Attraction shit. Izuku is a grown man. He's aware that sometimes, when you dream about someone, you create a version of them in your own head to suit your desires, bend to your fantasies. The real version of them and the one you want them to be become discordant. And, yes, that rings true with Kacchan too. Unfortunately… the real, infuriating, arrogant, condescending, cheeky, handsome, unexpectedly tender, beautiful, radiant, wonderful Kacchan is… is even better. More. So much more than the shadow of the high school boy that he thought he knew.

He's seeing parts of Kacchan (mentally) that he's never seen before. The way his mouth quirks up when his father looks particularly excited about something. How unexpectedly kind he is to stray animals. The way his eyes close as the wind rushes through his hair as they drive a little too fast in a convertible. The feel of his hand, ruffling through his hair, easy and affectionate, like its been something that they've done their whole lives. This is different. This easy, seamless affection that Izuku has been dreaming of for so many years is driving Izuku up the wall. Does Kacchan actually like him? Is this because he's now his step-brother? What is going on, and why can't Izuku's heart stop dancing Zumba for one goddamn second when he's in Kacchan's proximity?

What is he going to do once Kacchan goes back to college?

What is Izuku going to do if this is just a fling for Kacchan? A convenient, desperate fuck that Kacchan had to get out of his system? What if this is just how he is now, softer, gentler, and Izuku's just the desperate thirsty man willing to drink the last droplet of water from the wrung-out rag that stands as a metaphor for Katsuki's affection? There's nothing between them that guarantees that Kacchan won't just drop him like a bad habit the second he's out of their stifling home town. Hell, it didn't stop him last time.

Izuku feels his heart sink lower and lower into his abdomen. He shouldn't have done this. He should have rejected Kacchan straight off the bat. Because Izuku can't do this again. He can't lose him again. He was okay, just fine, trying to piece together a life of joy and love and fulfillment without the man next to him. It didn't matter that something felt like it was always missing. The pain had subsided, a phantom limb that Izuku almost didn't think about anymore. Knew that it was once a natural part of him, but also knew it was gone. Has worked around it. Been stronger for it.

But he's back. He's back, it feels so right, and Izuku can't fathom going back to how things were. How… how is he ever going to be able to move on?

The memory of Kacchan smirking, bragging about all the boys he's been with, comes strikingly into Izuku's mind. People have always been falling all over Kacchan. Izuku knows he's not special in that regard. It only makes sense that he'd take up a lover. A lot of lovers. A gang of lovers? Kacchan's so experienced. Has probably been with boys that are handsomer. Less stocky. Less whiny. Less… Izuku. Izuku swallows drily, ignoring the prickle in the back of his eyes. Its not fair, is what it is. Those guys don't even know him. Izuku knows him.

And if he knows anything about his step-brother? Well – he's a bit of an adrenaline junkie.

And Izuku is going to keep trying – trying to give his Kacchan the kind of high that leaves the other man addicted. That will keep him coming back for more. That will prevent him from going to anybody else.

Izuku gulps nervously and looks around. The lights are off on this red-eye, the plane is half-empty, and their parents are ahead of them, clearly both asleep. Izuku maneuvers next to Kacchan in the seat, raising the arm-rest, careful not to make too much noise.

Feeling excitement prickle under the collar of his shirt, he gently nudges his hand under his own blanket, snaking under Katsuki's. Gently, ever so gently, he lets his fingertips trail against Katsuki's thigh. Its times like these that Izuku's so grateful that his irritating-as-shit step-brother insists on wearing sweatpants everywhere. He can feel his really-this-must-be-a-joke-what-is-this-a-strap-on-come-on-dude dick hanging a little to the right. Does he wear these because he's too big and its less comfortable in jeans? Izuku's mouth floods with saliva at the thought, and he feels his heart speed up.

He feels his heart practically hop out of his chest, hands shaking wildly as he can feel Kacchan shift. He rolls his head to face Izuku, green eyes meeting clouded, mischievous red.

"'Morning, Deku. Whatcha doin'?" Kacchan whispers, flashing him a knowing grin. Before Izuku has the chance to sputter out his own shy answer, Katsuki re-adjusts himself, leaning back further on his seat, spreading his legs. Giving permission. Izuku bites his lip, having difficulty looking away from those mesmerizing cherry-red eyes. God, what he'd do to kiss those irritating, taunting lips…

Izuku doesn't respond. Instead, he more confidently rubs along Kacchan's inner thighs, fingers skirting along his member, feeling it grow plump under his hands. He's acutely aware the increased rate of breathing from his brother and the fact that his own cock is now starting to press irritably against his shorts, reminding him why some people wear sweatpants all the time.

Carefully, his hand skirts along the waistband of Kacchan's sweatpants before he makes his way past that cumbersome elastic band. The second his fingertips touch Katsuki's smooth dick, the blonde closes his eyes and gasps weakly, arching his neck back. It does insane things to Izuku's mental state. Would it be fucked up to suck his step-brothers dick right then and there? In the isle of this red-eye flight from a family vacation, their parents one seat up from them?

Probably.

Izuku takes a deep breath, trying to gather up whatever bravado and ball-havingness he has, and stands up, pulling his hand out from Katsuki's sweatpants. Teasingly he stands up and slides across Katsuki's lap, grinding down on his step-brother's erection, before getting out in the isle and giving him a cheeky grin.

"I'm going to the bathroom." Izuku says, pointedly, and stares straight into Katsuki's eyes, hoping that his partner will understand. He nods, slowly, Katsuki's handsome teeth worrying his handsome lips, splotchy blush on his cheeks. Izuku's whole neck feels like its on fire. Izuku expects it to be embarrassment, or shame, or bashfulness. He's not the kind of guy to do this. But, if he's real with himself? The feeling feels a whole lot like anticipation.

He sits in the stall, brain on overdrive, his own excitement now giving way to panic. He's really been pushing it. How long before Kacchan just sneers at him and tells him he's a gross little nerd and straight up rejects him? Izuku wouldn't blame him, at this point. This is a bit much, even for them. Before his mind decides to drive itself off a cliff, the door to the bathroom slides open and the large body of Kacchan towers over him. He stares down at Izuku, who is sitting on the closed airplane toilet, resting his head on his fists like he's deep in thought. Katsuki makes a point of locking the door behind them and turning on the water. He smirks at Izuku, and Izuku is acutely aware that he's eye-level with that mouth-watering fullness of Katsuki's sweats.

Izuku doesn't hesitate, his overthinking brain suddenly very blank, just takes Katsuki's hips in his own hands and jerks him forward. Katsuki responds in full, threading his fingers through Izuku's green curls. Izuku darts his eyes up – Kacchan looks so predatory. Expectant. It steels Izuku's nerves. God, its so hot. He wants to satisfy Kacchan. He would do anything, anything to make that happen.

He digs his fingertips into the elastic on Kacchan's sweatpants, pulling him even closer to his mouth, trailing wet kisses along the other man's abdomen. He's elated when Kacchan grunts gently, putting his arms up to keep steady in the tiny bathroom, eyes closed. Jesus, he's unbelievable. So pretty. Izuku doesn't know how make him his. Its agonizing. It sparks an untamable flame in him. It makes him furious, and lonely, and excited, and horrified. Izuku's never thought of himself as a possessive person, but the second he looks at Kacchan, there's only one word that goes through his head.

Mine.

He gives Katsuki a fervent look, licks his lips. With a smooth movement of his shaking hands, he slides down the man's sweats. Jesus, Kacchan is just… How? If Izuku wasn't on the receiving end of his dick, he'd be so jealous. How is he smart, and handsome, and tall, and rock a cock that would make porn stars turn tail and choose a different career path? No one man should hold that much power. Seriously, if Thanos snapped his fingers and took away half of Katsuki's beauty, he'd still be the most gorgeous person Izuku's ever seen. Izuku laughs at himself. Wow. What an unsexy thought. Kacchan would surely call him a big ol' dweeb for that.

"What's been with you, Deku? You – ah –"Kacchan's questioning is cut short as Izuku wraps his lips around the engorged member. Using his hand, he spreads his spit down his step-brother's shaft. He's salty, still tasting like sunscreen and the ocean, and it makes Izuku feel heady, dizzy.

Izuku can't get enough of it. Loves the way his step-brother's cock stretches his lips, loves the overwhelming feeling of having to suck in air erratically through his nose, Kacchan almost being too much for him, loves the sensation of pressing his firm tongue against Kacchan's base and hearing the man curse under his breath. Loves the heaviness of that cock on his tongue, the way it bruises the back of his throat, the way it responds to his touch with such fervor.

Desperation overcomes Izuku as he gazes up at his step-brother, unsure whether the tears in his eyes are from the pressure of cock in his mouth or from the fact that he can't seem to control his emotions when Kacchan is within a 100-meter radius of him.

He keeps their eyes locked as he dives in deeper, feeling Katsuki's cock hit the back of his throat. He smiles around the dick in his mouth as he watches the other man's eyes flutter closed, the arms he has to steel himself overhead shake. He's doing that to Kacchan. He is. Spurred on, some weird cock-sucking bravery igniting in his chest, Izuku grips at Katsuki's half-exposed ass and thrusts the other's man's hips rhythmically into this mouth. He makes a show of it, spurred on by the glazed, carnal look on Kacchan's face. Spit dribbling down his chin, he makes loud, slurpy arcs, making sure he keeps his eyes on Kacchan's face as he slowly but surely loses all semblance of composure.

Izuku sweeps up the salty tang of Kacchan's precum with the tip of his tongue and moans, letting his breath caress the sensitive head before diving back in, letting the tip tickle his vocal cords. He works his hands, savoring the feeling of the shaft quivering under his touch, moving his other hand against Katsuki's hips. Izuku can tell that he's holding himself back; in a way that he almost never did when they were in high school. He's not throat-fucking him, ramming his own hips down Izuku's throat until in hurt, pulling at his hair and finding his release. Izuku is almost disappointed at this oddly tender and respectful blowjob.

The idea forms in his mind much like an intrusive thought. Like Satan himself whispered it into Izuku's ear. Izuku can't hold back the feral grin at the idea and it takes a minute to re-concentrate. He grips tighter at the base, like he knows Kacchan likes, and sucks on the swollen, red head of his gorgeous cock.

"Deku, s-stop…" Katsuki says, lip bit hard, face twisted in concern. But Izuku knows what he's doing, and knows that Kacchan is way past the point of no return. It gives him a sense of power that he's not super familiar with. Just look at him. Kacchan. Golden boy, valedictorian, Harvard guy, future doctor, tall and handsome and perfect. Getting his dick sucked in a bathroom by his step-brother. Izuku's so slaphappy with the feeling that he doesn't allow any doubt to cloud his joyous mind.

Using one hand to get his bangs out of his eyes, he stares up at Katsuki intentionally as he feels the man's hips jerk into his spit-slicked hand. He doesn't take his eyes off Kacchan, trying to convey what he's doing in his determined face. Kacchan seems to realize it too, and he's half-heartedly trying to jerk his hips away, but he's too lost in it. A few strokes of Katsuki's quivering member and, suddenly, Izuku feels the warm drops of Kacchan's cum on his face. The sensation is…. Unreal. One very real part of Izuku wants to be disgusted with the sticky white substance running down his skin. Another, much more prominent part, wants to be coated head-to-toe with it. Izuku squints his eyes as a drop of cum makes its way down his forehead into the crease of his eye. He darts his tongue out to catch a precarious drip rolling down his lips.

The look on Kacchan's face, though? Fucking priceless. The look of surprise on his face is the birthday present Izuku never thought to ask for, lest it was too over the top. He grins, reveling in the feeling of Kacchan's spunk trailing down his sunburned face. With a smile on his face, Izuku darts forward, landing a chaste kiss on the tip of his step-brother's spent cock.

He lets Katsuki catch his breath, grinning at the other man the whole time, before he watches Katsuki, incredulous, comb through his own hair. He leans down, eyebrows raised in question.

"I'm not fucking complaining but…the fuck, Deku? A facial? Seriously, what's going on with you?"

"Hmm… " Izuku says thoughtfully, swiping a glob of cum on his fingers and depositing it on his tongue like he's taste-testing some kind of fine new hummus.

"I mean, our parents got a spa day. Felt like I was missing out."

Katsuki snorts. "I'm not joking, though. Fucking hot, Deku, shit, but…" Katsuki takes a paper towel and without further words, starts to swipe up the sticky liquid off Izuku's face, scrunching up in his nose in half-disgust, half-intrigue.

Ignoring the part of Izuku's heart that seems to be jumping at the gentle cum-cleaning that's happening on his face right now, Izuku dives right back in, not letting the moment dissipate.

"You liked it, though? Did any of your boyfriends do that for you, huh? I would. I'll do anything, Kacchan. I'll – "

The paper towel pauses, leaving a streak of cum on Izuku's cheek. Okay, maybe it's less sexy now.

"Wait – you've been doing all this crazy shit with me because you thought I'd like it? Fuck, Deku, I thought you became some kinky-ass nympho! You don't fucking need to – "

"I – I want to do whatever you want. I want to be enough for you. Anything you want, anything you need, I can provide it. I can. Please. Let me prove it to you." Izuku finds himself ranting, a little more desperate, voice breathier than he intends.

Katsuki's face falls, replaced with a look of concern. A look that Izuku did not expect, or want, after getting blasted in the face with his step-brother's cum.

"…You've been walking around, feeling this way? Deku – shit. I'm the one that… that can't give you certain things. I'm the one that… Look, man, there's a reason that you haven't been with guys after me! You never even fucking told me that you liked women! What the fuck am I, then? Some kind of fucked up fetish?"

"Kacchan…" Izuku worries his lip, realizing that the salty taste of Kacchan's spunk is still coating it. For some reason, it makes him more daring.

"There's nothing that I want. In this world." Izuku grabs at Katsuki's hips again, resting his head against the other man's abdomen in the world's most awkward hug. "That you can't give me."

"Pfft. Fucking loser," Katsuki says lovingly, running his fingertips gingerly through Izuku's curls, scratching at his scalp.

"Enough for me. Fucking idiot. You're too much for me, if anything." Katsuki huffs, pulling Izuku up. Without hesitating, Kacchan draws Izuku in for a slow, drawn-out, intimate kiss.

Katsuki rests his forehead against Izuku's, pulling gently at Izuku's ear.

"Your turn?" Katsuki inquires, and Izuku just laughs.

"No, I'm okay. When we get home?"

Katsuki arches his head up, landing a kiss on Izuku's forehead.

"You fuckin' asked for it. Meet you back at our seats?"

Izuku just nods. Katsuki exits the bathroom quickly, and Izuku takes a second to sit, gather his bearings. He stands up and looks in the mirror. He considers whether he even wants to wash his face, but decides it probably the least gross thing for him to do. He nods and slathers his face with the cheap airline soap. Despite not getting off, something in him relaxes. A fear that's been coiling in the bottom of his stomach has… almost disappeared. Kacchan wants him. As he is. Izuku stares in the mirror, at his swollen lips, his freckles, his too-innocent grass-green eyes. He doesn't really understand why. But… its Kacchan. His Kacchan.

Izuku makes his way back, a little more careful not to rub against Katsuki's front as he gets into his window seat. Izuku pauses after he puts his seatbelt on, keeping his eyes focused on the man sitting next to him. It takes Kacchan a second to notice, but its not long before his eyes meet Izuku's.

"What?" Katsuki asks. Izuku bites at his top lip, and, putting their arm divider back up, moves a little closer to Katsuki. Looking around, he places his head on Katsuki's shoulder. He feels the stiffness of the man under him relax, his shoulders falling. The two of them wordlessly scroll through the screen, agreeing on a bad superhero movie that both of them have seen a million times before.

Izuku feels his eyelids grow heavy, the comfort of Kacchan's scent, his big hand wrapped around his waist. Everything is right. Everything is safe. He's with Kacchan, and everything is going to be okay.