Archive of Our Own

It’s no secret that Luca has been working out. The rest of Nijisanji has seen the proud fruits of his labor, with Enna almost always wailing in envy every time Luca’s assets seem to have grown bigger than the last time she saw him. But it had been Shu, along with Vox and Ike, who have watched his progress firsthand in the same gym they all go to.

What is a secret though is that Shu has been wanting more than just watching Luca. It all goes downhill from there.

“You’re staring,” Ike nudges Shu’s arm with his, sweat sticking from skin to skin to shove Shu out of his reverie.

Shu can use the workout and the heat to blame for the way his face flushes, but Ike has caught on quicker than he has, and it’s always no good when someone else is suddenly let in on your little (perverted) secret. Shu tries to brush it off with an awkward, totally not suspicious, clear of his throat, “Am not.”

“You so were.”

“Quit it,” Shu groans back, plodding towards his gym bag to grab his tumbler. He flicks and clicks it open with his thumb and it goes straight down his bustling system. Everything’s all so jittery, from his muscles to his prickling skin, and even the way the thoughts run in his head are too many and too fast for his own good.

“You two are the closest out of everyone, aren’t you?” Ike doesn’t ask, he states it. Everyone knows Shu and Luca, Luca and Shu, attached to the hip from ever since they could all remember. So these types of conversations shouldn’t be new to them, Ike firmly believes so. “Why not just ask him?”

The look that Shu gives him is dead on. One that screams, “Are you seriously asking me that?” Almost as if Ike had suggested the dumbest idea known to mankind.

“What?” Ike quips back, incredulous.

Shu’s mouth opens and closes like a fish out of water, out of words, before he’s turning away with a firm, “No.”

“What do you mean no?”

No, Shu’s definitely not gonna ask Luca about that. Despite how close they are, despite their completely mutually beneficial and physical relationship, it’s just too much. He’s never gonna ask Luca of that. Never.

Shu isn’t even sure if he and Ike are even on the same page to begin with. Despite how eerily observant Ike is (he isn’t, Shu’s just too obvious), he doubts he could read his mind. Perhaps Ike is toeing along more on completely sweet and harmless territory. Whereas Shu is thinking of is something so spine-chillingly lewd, so undeniably raunchy, so unfathomably horrid and sinful and distasteful and—point is, Shu still has some semblance of dignity in him to not ask Luca to make his perverted fantasy come true.

Shu is content with watching. He’s content in watching Luca glisten with sweat underneath the bright lights, in quietly drooling to himself every time Luca pushes his wet long and blonde hair back, eyes following the way his tattoos move like they’re alive, watching his muscles shift with every pull of the pec-deck’s handlebars, and then rubbing one out at the shower stall next to him.

Shu is aware that this is also very, very perverted of him, to jack off to the man who’s standing just a wall away from him, but it’s better than actually asking him to participate in the thing he’s thinking of. He refuses to even acknowledge it, nor ponder over it, because that would make it all too real and soon there will be no room for denial.

This thing will pass.

And this thing he’s thinking of will be a secret that Luca will never know.

—

Luca knows.

Very rarely does something go unnoticed by him, especially when it comes to Shu. He’s sweet and thoughtful and so oddly keen—and although most of the time, Shu really doesn’t know what goes through that head of his, he should’ve known he would get caught one way or another.

“You were staring.” Luca deadpanned.

“Wha—I wasn’t!” Shu stutters, hit with a sense of deja vu from the same conversation; only this time, it comes at him like a freight train at a hundred miles per hour.

Luca leaves the cable station he had been exercising on and moves to the treadmill that Shu is currently using. He prompts his palm over the handrail, tilting his head with a curious, expectant expression, “Something on your mind?”

In truth, Shu should’ve seen this coming from a mile away. It had only been a week since he and Ike had this very conversation and yet, Luca had him all figured out already. Being so close and knowing each other so well really has its downsides and this one comes back biting and gnawing at Shu’s ass. He reluctantly stops the treadmill, waits till it slows down before hopping off, “It’s nothing.”

The moment their eyes had met in the mirror across them, Shu knew he was done for. Luca must’ve caught him staring in the middle of their workout, he definitely did, and now everything is tumbling down like an avalanche for poor, defenseless Shu.

Luca could practically hear his gears turning; with how close they have grown to each other, both emotionally and physically, it is as easy as breathing to read and follow him. Something’s up, Luca just can’t seem to figure what, with his voice quiet behind him, “For once, I don’t know what you’re thinking of, Shu, and it scares me.”

Somehow, Shu’s both grateful and terrified of that. How their minds, which are always so beautifully and perfectly in sync, are suddenly thrown off their own rhythm. Years of living together, years of knowing and learning each other and it all comes to a stop at one perverted thought courtesy of Shu himself.

If only Luca knew. Shu can’t help but blush in embarrassment, “Can’t we talk about it later?”

“You’ve been avoiding me for the past week, Shu,” Luca crosses his arms over his chest and god, Shu tries so hard not to stare. “I think I’ve done my fair share of waiting.”

Shu diverts his gaze from Luca’s plump chest underneath his black tank top and swallows around his dry throat, “Trust me, you definitely do not want to have this conversation here.”

Luca thinks about it for a second and Shu nearly rips his eyes off of their sockets just to stop himself from unabashedly staring. It’s almost as if they were taunting him with how thick they were underneath his shirt, with the lines of the folds going deeper and tighter from the way his arms were crossed over each other, and his inkjet tattoos like sin on a silver platter.

Shu prays to every god above to stop him from embarrassing himself in front of him (e.g. popping a boner right in the middle of the gym or worse, mindlessly reaching a hand out to squeeze them like some prepubescent teen who can’t keep his hands to himself).

When Shu comes to, Luca is letting out a sigh, “Fine. But no more running?”

Shu is grateful for Luca always being ready to be the bigger (god, yeah, he’s definitely big, Shu’s head unnecessarily supplies) person out of the two of them because who knows how long he could last avoiding Luca like he was the plague. He could only hold on so much with their daily workouts and Luca’s chest bouncing in front of him everyday like bait on a tackle. It’s dehumanizing, for both Shu and Luca to continue this dance of theirs. So Shu finally decides then.

“No more running,” Shu finally says.

With Luca giving him one last look, he reluctantly takes his leave and goes back to his sets. Shu should be grateful that this conversation is over, but is instead immediately filled with regret as soon as Luca grips onto the cables and pulls. On beat, his chest expands at the spread of his arms, his dark tattoos breathing and pumping in time, with the lines of his pecs pressing against his thin and wet shirt, and Shu just wants to run across the globe and never return.

Somehow, Shu gets a grip of himself and instead spends the rest of the hour trying not to stare at Luca’s chest.

(He fails, but that conversation is for later.)

—

“Have you ever thought of getting titty-fucked?”

Luca gawks at him. Shu has done it.

As expected, he’ll have to knock Luca out, grab his belongings, change his name, move to another country, never to be seen and heard from ever again.

“That’s it?” Luca scoffs into the quiet air of their room, “That’s what’s been on your head? All this time?”

Shu drops himself back to his bed, pulling a pillow to his face to groan, “It’s not everyday you call your friend and say, hey, man, your chest workout has been doing you favors. Do you wanna maybe try and get your tits fucked?”

“You’re right, it doesn’t happen everyday, but we can if we try hard enough,” Luca chuckles, crawling closer to Shu to lift the pillow off his face, “We can do it every night after dinner if you want to.”

Shu makes a tiny noise of disgust and arousal and steals the pillow back, hiding himself, “I’m not fucking your tits everyday, Luca!”

“Then I’ll fuck your tits, how about that?”

“Please stop saying tits,” Shu groans even louder, hitting him with the pillow, “This is embarrassing enough as it is!”

Luca chuckles as he watches Shu sulk, “Whose idea was it to begin with?”

“Do you want to do it or not,” Shu deadpans. Straight to the point, despite the warm blush in his cheeks and the excited twitching down his jersey shorts.

“Yes,” Luca says almost immediately. He hovers Shu and leans in till they’re a breath away, whispering around his sharp grin, “A hundred times yes.”

Intimate, unhurried, Shu kisses Luca and sighs underneath him. It’s languid enough to make Shu melt and shiver, his hands going restless against his lean muscles, his fingers digging into his firm skin and tracing every shallow dip he could reach. Luca moans at the touch, rutting into Shu’s arousal with his till it renders them both into a moaning, panting mess.

It’s almost immediate, the way they react to each other. A tightening coil rolls within Luca’s stomach, feeling his skin growing warmer and warmer at every press of Shu against him. Their legs tangle till neither of them knows where one ends and starts, their hearts beating close to each other, erratic and so, so impatient. Luca sighs into his mouth, thumbing at Shu’s waist before flipping their positions.

Shu settles his legs on each of his sides, crawling backwards and a little lower till he’s met with the tent in Luca’s pants. It’s almost humiliating how much he drools over it, from the sight and scent alone, but the haze of his arousal clouds every shame he has left in him till he’s mouthing at Luca’s clothed cock, licking like a starving kitten. He takes in his musk, salivating against the soft material of his sweatpants and tonguing at his hard on.

Luca groans, voice low as he pats his abdomen, “Come here.”

With one last gasp and a squeeze on Luca’s thigh, Shu crawls till he’s met face to face with Luca. Shu straddles his waist and lets Luca’s rough hands wander on his thigh, lets him press and thumb at its inner sides till he’s bucking into the air for more. Shu’s cock throbs in his shorts at every helpless thrust he makes, his legs spreading wider to bring himself closer to Luca’s chest and rut against it. The layers of fabric between them does nothing to help his arousal.

Sensing Shu’s impatience, Luca slightly rises from the mattress and tugs his shirt off, laying back with his upper torso bare for Shu to gawk and admire. And that he does. Shu can’t help the tiny gasp that escapes past his lips, the veins under his arms throbbing and his knuckles whitening at the sight of them. Thick, plump muscles with a skin like gold, his nipples hard and erect from the cold air and from the stimulation underneath, almost as if begging to be licked and touched.

Luca has always been unashamed of his body, works out for hours on end and sleeps without a shirt on. So loud and proud with his hard work and efforts in climbing off his bed at 7 in the morning to accompany Shu in the gym. Shu has almost never stared too much, it was only respectful to do so. There must be some sort of unspoken bro-code to never look long enough.

But Luca’s labor on certain areas have been a little too distracting these days and although he knows it’s wrong to ogle, he can’t help himself when Luca keeps wearing the tightest of shirts, walks out the showers and sleeps without a shirt on and leaves Shu with a raging boner to solve by himself.

Still, it was never Luca’s fault, but this hard on that Shu has now is definitely his. And Luca looks more than happy to help him this time.

“You can touch them,” Luca lowly chuckles, encouragingly thumbing at Shu’s thigh.

Slowly, Shu reaches his hand out till his skin burns against his, feeling the soft, untensed flesh under his touch. Shu presses another and Luca looks pleased, looking like the cat that caught the canary, with the way Shu caresses and fondles each one with a breathless stutter.

Swallowing around his rough throat, Shu rolls a nub with his thumb, “They’re so…”

“Shu, as much as I’m willing to indulge you with your kinks, I don’t think I’d like the idea of you waxing poetry about my chest as much,” Luca immediately cuts him off with an airy laugh. Despite his amusement, it’s clear how affected he is already, from a little caressing and touching alone.

Shu bites his lower lip at that, everything almost unreal with how quick Luca unravels underneath him. As if in a daze, he lowers himself and takes a nipple into his mouth, slowly licking it till he’s built a rhythm.

"Ngh,” Luca moans against him, unconsciously bucking into Shu’s mouth and grabbing him by the back of his head for him to take him deeper. Shu tugs the other nub with his fingers, alternating between rubbing and teasing it till it’s nearly swollen from the sweet attention.

Shu swirls his tongue around the pebbled nub, eliciting a moan out of Luca’s lips. He twitches underneath the wet and warm plush of Shu’s tongue, his senses heightened, his body so sensitive it’s almost ridiculous how much he’s leaking in his pants from this alone.

Eagerly, Shu pulls his lips away enough to give his tongue more room to move, flicking up and down, up and down till Luca’s writhing against the mattress. His tongue expertly flicks the nub, coating it with enough spit to make Luca shudder when it’s hit with the cool air. Shu holds him in his place by placing a firm palm over his pec, pushing him down, “Stay still, Luca.”

“Easier said than done,” Luca glares at him, but it’s not meant to intimidate, not with the high flush of his cheeks and the hazy, distant look of his hooded gaze.

“Take these off,” Luca’s voice is almost raspy, desperate, his hands even more with how he clumsily tries to tug Shu’s shorts off.

With a hand on the bed, Shu lifts himself up and slides the material off. It’s almost magnetic how quick he comes back to Luca, their skin against each other electric, enough to spark their nerves into a million stars.

Shu resumes to straddling Luca’s torso. His dick twitches in interest the more the distance between him and Luca’s chest draws near and at this point, there is no doubt that Shu would develop some sort of Pavlovian response to his pecs and his tight shirts like a dog to a treat.

As soon as they were both settled comfortably with the pillows underneath Luca and him underneath Shu, the room had gotten tremendously warmer. Like an overwhelming, blistering summer heat had caressed its hand against their skin. Still, they made no move to lean away from each other and it only spurred them on even more. Shu on top of Luca, sitting on his torso with a thick, heavy fog of arousal surrounding them. Luca rests his head against the headboard as Shu comes closer, holding his jaw, “Open up.”

Luca parts his lips and takes Shu into his mouth in one smooth motion. They’ve done things like this before, experimenting and training each other’s bodies to teach and familiarize one another. Warm, tentative and restless hands wandering across wide expanses of skin, lip and teeth latching onto the most sensitive parts and dips of their bodies, leaving marks that they knew no one would dare to look and find.

In a way, this was bound to happen. Growing up in a secluded company, isolated from the world with only cameras and flashing lights as their companion aside from the other members—it was only a matter of time till they started to seek for something else. As curious teenagers living together, it was only sensible to them that they would use each other to find some channel for relief, even until today.

So Luca takes Shu’s cock like he was meant for this, prying away his teeth off his sensitive skin and hollowing his cheeks in the way that he knows Shu likes. He swirls his tongue around the tip and wets the length enough to pull a shudder out of him, thumbing shapes at his waist to spur him on. Shu then pulls away, adamant to not let this end all too soon. He had suffered a week for this and only an idiot would waste an opportunity like this.

“Was that okay?” Shu breathlessly asks, head spinning as he tries to back away to straddle Luca’s torso.

“Mhm,” Luca wipes the dribbling spit off his chin and lips with the back of his hand, the other stroking Shu’s sensitive cock in his fist. “Are you gonna fuck my tits now or what?”

“Stop calling it that, “Shu groans, thrusting into Luca’s hand, “And if you’d just let go of me, I would.”

Teasing, Luca chuckles. And he could draw this out for as long as he wanted to, he definitely could, but he decides to tease just a little more before giving Shu what he wants. Luca thumbs at the tip of Shu’s cock, seeing it leak with precum but still far from enough.

Luca hums, “Hold on.” He pulls a drawer open from his side and blindly rummages through it, only stopping when he feels a familiar tube in his grasp. Luca clicks it open, warming it between his fingers before smearing it over Shu’s girth, stroking and rolling his palm over the tip just enough to have Shu twitching above him. Sensitive, as he always is.

Once he deems him wet enough, Shu wastes no time in bringing himself closer. He grabs Luca’s pecs and pushes them together between his dick and thrusts. He moans at the feeling, not as tight and warm as being inside Luca, but it’s enough to give him the friction he so desperately needs. He pushes up, fingers eagerly writhing and squeezing against his chest for his pleasure. He looks debauched on his own, helplessly thrusting upwards that Luca can’t help the laugh that he lets out, “You know there’s not a lot to work with, right?”

“I know,” Shu slurs out, head throwing back as he ruts against him, “But—but it feels so good…”

Shu doesn’t even have to tell him, Luca could feel every twitch and leak of his cock against his skin. He could feel his heavy weight and warmth that effortlessly set him alight. Luca knows from the awed expression on his face, from the way Shu’s lips part and his brows furrow and his lashes flutter. But he also knows it’s not nearly enough, not for Shu, so he taps his thigh to get his attention, “Could you move a little?”

With a confused sound, Shu moves to do as he’s told. He scoots back till Luca has room to bring himself lower, his back now completely pressed on the bed, golden hair fanning out like a halo around him. Shu follows like a moth to a flame and positions himself over him again. He sets and folds his legs outwards till Luca’s arms and chest are underneath him before he greedily takes.

Without thinking twice, Shu takes the new friction that Luca offers him, relishes in the delicious slide of his cock between his pecs and wantonly moans from the heat and haze of it all.

Shu keeps thrusting and thrusting, squishing Luca’s chest underneath his touch to bring each muscle closer, tighter, around him. He ruts into them like a dog in heat, tongue lolling out at the new, unexpected pleasure that he had been waiting for all this time. He doesn’t even notice when he moves into one position to another, shifting either closer or farther to stimulate every part of his sensitive cock. His pacing switches from rushed, messy thrusts to slow, unhurried ones, that has both of them groaning at the sensitivity.

Meanwhile, Luca’s untouched cock chubs in its constraints, creating a wet patch from the lack of attention that Shu can’t give at the moment. It twitches and leaks at every thrust Shu makes and he’s so close to begging for something—something to ease the coiling heat away. To have Shu around him, his tight heat clenching at every drag of his cock, to have Shu’s mouth or his hand eagerly bobbing at his length; he’s so close he doesn’t mind whatever means Shu takes just to make him come.

But Shu’s too lost in his own pleasure to think of anything but the warm feeling around him. Can’t think of anything but the soft plush of Luca’s chest and the stuttering gasp he makes when he tenses them so often, giving him a rougher yet better friction. He drowns in the sting of it, in the alternating feeling of pain and pleasure and gasps for air at every breath that Luca lets out and fans against his sensitive tip.

The ghost of his warm breath has Shu leaking over his chest, dripping down Luca’s neck and collarbone and Shu nearly loses himself at the thought of him being able to leave marks, parts of him, despite the position he’s in. He’s always had a fixation with Luca, biting onto every patch of his skin and feeling himself slowly drift from the ground the moment he sinks his teeth into him, but with the state they’re in, he doubts he could have that rush again.

The territorial marking, the pleasure and pain that Luca so unconditionally hands to him. But Shu makes do, marking Luca in a new, uncharted way and it’s enough to shoot a semblance of that thrill up his brain.

“Anh, Luca, please,” Shu gasps out, not even knowing what he’s begging for.

Shu reaches a hand out to hold onto the headboard, giving himself more leverage to fuck into Luca. The bed creaks even louder at that, along with the gasps and moans that Shu lets out. He’s drawing closer and closer, rutting against him with no finesse, just pure, utter desperation. So much so that Luca could practically feel every drop of it pour out of his body, as if tangible, and he braces himself for the moment where Shu comes apart.

He’s so, so close, just mindlessly rutting like an animal in heat with Luca as his only source of relief. He continues to erratically thrust around his muscles, pawing at either his shoulder or his chest—his mind too foggy to find proper purchase for his other hand to hold onto. He’s grown desperate, needy, so ridiculously whiny that Luca almost feels sorry for him, for making him this perverted bitch he is now.

“God, you’re so pretty like this, Shu,” Luca manoeuvres his hands from under Shu and squeezes his ass, sinking his nails into the pale skin until Shu’s a crying mess.

With a rough, tight grip, Luca helps Shu fuck him harder. He pulls and pushes him, almost guiding, and gives his ass one, two slaps, only stopping when he knows for sure he had left a bright, beautiful mark in his own sadistic way. The pain pushes out a scream from Shu, his dick spurting precum up Luca’s chest and he loses his rhythm, hips stuttering. Another slap has him continuing his pace, riding over Luca’s torso with his cock so desperate for release.

Shu nearly sobs from how overwhelming the pleasure is, his arms shuddering, his legs aching in protest. But the hand on his ass squeezes even tighter, as if spurring him to continue like his life depended on it. His fingers dig into Luca’s chest deeper, leaving crescent moons as he frantically fucks him. Tears spring in the corner of his eyes from the pain and arousal alone, his body winding tighter, his throat going drier with every push he makes.

With one last thrust and a pathetic whine, Shu’s body convulses from the erratic waves of pleasure that crashes upon him. White, warm ropes of cum spill right into Luca’s face, dripping off the slope of his nose and his long lashes, down his flushed cheeks and chapped lips. Shu chases after his breath as he rests more of his weight over Luca’s torso, quietly admiring the pretty tint of white and pink he created on his pretty face before finally moving.

Luca groans from the weight that’s taken away from him and lets Shu wipe his face clean. With the cum now off his eyelids, Luca grabs another wet wipe and starts cleaning his chest on his own. It’s almost painful when he touches it, the pecs pressed together so tightly and his muscles aching from tensing too much.

They clearly overdid it, but the pleased sigh that Shu makes when he hits the bed is enough to make Luca think that it was worth it at least.

Luca’s just as sure that a token of gratitude is in order.

Shu has cleaned and tucked himself back in, ready to give into the exhaustion with a dopey smile until Luca speaks up.

“Hey, Shu.”

Sleepy, Shu grunts, “Yeah?”

“Ever thought of getting your thighs fucked?”