Work Text:
Uncharitably, Kunikida estimates Dazai does nothing 85% of the time, hinders their work 13% of the time, and contributes a measly 2% when he can be bothered. Usually, he's lounging on the office couch with headphones on, taking naps at his desk, and dawdling along behind Kunikida attempting to make them late for everything. He scarcely makes himself useful once or twice a quarter. Preemptively, Kunikida considers him a lost cause and more trouble than he's worth.
Before Fukuzawa-san told them they were going to Matsuyama, Shikoku for a case that required staying there until it was solved- Kunikida never wanted to go back to teaching math this badly.
The train ride had been long, and as Kunikida tried to work Dazai kept falling asleep against him or the window! Kunikida pulled his cheeks and ears more times than ever that day: punishing him for not staying awake to work with him, for snoring, and for drooling on his jacket.
Dazai's lollygagging at the station led to them getting caught in rush hour in the cab on the way to the hotel. Kunikida wound up checking them into their hotel later than expected. Luckily, he still had time to settle in and shower before dinner.
38 minutes to be exact. That's when he wants to head out the door. With that much time, Dazai wouldn't be able to deter him off track from this plan if he wanted to. For today, Kunikida was done letting the mummified bastard disrupt his schedule.
"Ku~ni~ki~da~kuuun~ what do you even have these big arms for?" Dazai latches onto his bicep like an octopus. "Didn't you see me struggling with my bag? What's the point in having a big, buff, burly partner if he can't even pick up the slack?"
Kunikida's face is on fire as he tries to peel Dazai off him. Does feeling up his muscles count as harassment? Because at the moment Kunikida is feeling pretty harassed.
The more immature of the two of them starts giggling.
"You're blushing. What are you thinking about? Using those nice arms to choke me out or pin me down I bet."
Unfortunately, Kunikida has no self control when dealing with this menace. In a blur he's shoving Dazai against the wall and has a hand tight around his neck. Dazai doesn't look surprised in the slightest.
And Kunikida still wasn't thinking clearly. Hot in the face, confusion sets in. Why does Dazai look like that? All smiley, relaxed, with his eyelashes fluttering; Then, he moans, hands grasping at Kunikida's forearm. Although he isn't trying to get free by any means- actually he pushes his hand harder into his throat until his windpipe closes and his moans turn into gasps.
Kunikida tears his hand away.
"Why the fuck are you like this?!" His fist pounds the wall behind Dazai's head.
Dazai coughs, catching his breath.
"I don't know what you mean."
"You fucking know exactly!"
"Whaaat? Why'd you stop? It'll work eventually Kunikida just gives up too quick." Petulantly, Dazai whines.
"Shut up!"
Dazai smirks, lifting his chin.
"Make me."
"I fucking hate you."
"Are you sure? You're this close to me and can't keep your hands to yourself. Seems more like you want to fuck me, Ku~ni~ki~da~kun~"
It's purely reflexive, but again he feels Dazai's pulse under his hand. Only this time, the taller man hesitates to squeeze, being stared at by his bandaged partner. Surprised at himself for being so easily angered and goaded. Someone like Dazai shouldn't have this much power over his emotions. He should be better at thinking things through and ignoring him- Then Dazai leans forward and Kunikida might never be capable of thinking a rational thought again.
Pulse steady beneath the bandages, his eyes have gotten darker and the corner of his mouth still upturned. The shadows must be tricking him, because Dazai.. looks..
"I'll let you." He whispers, giving the blond barely enough time to register what he meant before Dazai stands on his tiptoes, presses the soft flesh of his neck into Kunikida's grasp himself, closes the short distance between their faces, and kisses him square on the lips.
The blond is first and abrupt to pull back.
"What-what are you doing?" He wasn't expecting that. He wasn't expecting this.
Calmly, Dazai backs away to sit on the edge of the closest bed. Nonchalantly opening the drawer of the bedside table, Dazai pulls out a bottle.
"Just like love hotels, I thought they'd have some."
"Have what?" Kunikida's body moves towards him without thinking of the consequences.
He takes the small bottle from his hand, and Dazai immediately shrugs off his jacket.
By the time Kunikida reads it Dazai is already unbuttoning his vest.
"You're serious..?" Kunikida half-realizes, still not fully believing what's unfolding out of their constant bickering and incessant (admittedly sexual) tension.
"You want to." Dazai says, like he's telling him what time the train arrives, as though it's nothing major, far from a revelation.
He takes off his vest, and looks up at Kunikida, standing over him.
"You want to fuck me, Kunikida-kun~ Maybe it's for a fucked-up reason, but you still want to, don't you?"
"I haven't thought about it."
Kunikida about jumps out of his skin when Dazai's hand brushes his erection through his pants.
"Really? Seems like your dick has."
"Okay fine, since you said it, but not before then."
Dazai sinks to his knees, quick hands unfastening Kunikida's belt.
"Alright well, you think about it, and I'll suck your dick."
Kunikida's hand grabs Dazai by the chin to force him to make eye contact with him.
"You do not have to do that."
His hands go still in their tracks.
"I want to.." Dazai's eyes look off to the side, an indication in humans that one might be lying..
Baffled, Kunikida doesn't think any man would sink to his knees and offer another man that if he didn't mean it. Even this one, who is one of the most capable of manipulation and willfully insubordinate bastards on the planet. The mismatch in behaviors associated with people might just be because he's dealing with this guy.
"If you don't like it we can stop and forget this ever happened." Dazai offers.
"I don't know if I can do that." Honestly, Kunikida doesn't think they can go back from this if they wanted.
"Well, we better just go for it then."
At the moment, he does have a little time to kill. If Dazai tried this at any other time it's likely Kunikida would have turned him away.
Really it is Dazai doing all the going for it- He frees his dick from his pants all too quickly. Eyes wide, Dazai loosely takes him in his grasp, seemingly very excited. A tad nervous, Kunikida exhales through his teeth.
"I knew you'd have an amazing cock, Kunikida- but- I mean- look at this-"
Dazai holds up his arm next to his length for comparison, and the shaft is thicker than his forearm from wrist to elbow.. Kunikida had to admit the contrast is quite imposing. Although Dazai seems far from deterred. Dark eyes glinting with stars in them, he seems overtly pleased, marveling that it takes both of his hands to completely wrap around him.
Kunikida's eyes nearly bug out of his head when Dazai looks up at him, opens his mouth, and taps the head of Kunikida's dick on his pink tongue. It's a little absurd to Kunikida that he finds it that hot. It feels good, too. Warm and wet.
He closes his eyes, planting a soft kiss under the head, and trailing downwards.
Dazai opens his eyes, fluttering his eyelashes innocently as he brushes the shaft with his lips.
Kunikida's knees get weak as Dazai begins to suck on him. The feeling is like light electric shocks. Pleasure springs up in places his body isn't expecting it- like the base of his spine and his fingertips.
Dazai's wet tongue gives the head a sloppy welcome as he finally, finally puts him back in his mouth.
It's better than Kunikida ever imagined or pictured it could be. Though the sight itself is rather vulgar; Dazai's lips stretching and eyes watering as he looks up at him through dark eyelashes. Only adding to the affect. Then, Dazai moans and the reverberations make Kunikida's dick pulse and twitch.
Kunikida's hand tangles into Dazai's hair before he can think about it. It's soft, but Kunikida can't quell his impulse to pull on it. Dazai blinks up at him as more of his cock pushes past his lips. Kunikida groans aloud, unable to smother it.
Almost unbelievable, Kunikida did not think this would happen any time in his near future- let alone that his work partner, his colleague would be the one doing it.
He had no idea Dazai had this kind of talent. Hands stroking the half he couldn't dream of reaching, head bobbing and tilting back to receive him, the head of his dick certainly past his mouth and more than likely hitting the back of his throat.
It's mind-blowing enough Kunikida consciously thinks he has to pull out or else he'll reach an early finish. Exhaling heavily, Kunikida rocks back on his feet, and shakily pushes Dazai away.
The brunet releases him with a soft pop-
"Goddamn, you make a guy's jaw sore." Dazai pinches his cheeks and rubs on them.
Dazai rises from his knees to take a seat on the bed. Without pause, he continues stripping. Intrigued, Kunikida watches as the bandage-bound body is revealed to him.
It's nothing Kunikida hasn't seen before.. at least the shape of it under the array of bandages beneath his clothing, as it's impolite to stare in the baths. Except when they had gone to the hot springs, Kunikida had not seen his hole- Can you blame him for being a bit under-prepared for the sight of the unblurred orifice? Dazai really does look tight.. Could he really fit his dick in there?
"I won't need long. See? Watch closely."
Dazai pours lube onto his fingers, popping the cap closed, and setting it aside in seconds. Two fingers, his pointer and index prod at the small entrance, smearing the lubricant before both fingertips gingerly sink into him. Dazai sighs, briefly looking up at Kunikida as if to check and see if he was still watching him.
Their eyes meet in an intensely heated gaze. If they were more intimate with each other Kunikida would have guessed that to be a proper moment to kiss him. And the taller finds, he does sort of want to..
True to his words for once, Dazai's fingers start to warm him up, working their way into him, then pistoning in and out of him. After a few seconds, Kunikida notices him tugging himself apart- pulling to the side. Kunikida quickly caught on when a third fingertip began pressing into him, and Dazai's hips shook as he took it in stride.
Behind his teeth, he hears Dazai biting back his moaning. Points for trying.. Kunikida thinks, just knowing Dazai would be back on his loudmouth bullshit in a matter of moments.
Though, he looks rather cute right now. Straightforwardly, Dazai is the most concentrated Kunikida has ever seen him. Eyebrows knit together, suddenly his back arches up as though an electric shock went through him.
"You okay?" Kunikida checks in after that strange reaction.
Dazai smiles, biting back a chuckle, and Kunikida wonders why he even bothered asking.
Kunikida is having a hard time tearing his eyes away from the sight of Dazai fingering himself open for him.
"Can you maybe take your clothes off and make sure you get lube all over your dick?"
The blond detective blinks. Oh right. That's what he was supposed to be doing. Rationally he knew that but couldn't help getting distracted. It was Dazai's fault for telling him to watch closely anyway.
Kunikida strips down to his socks, and reaches for the bottle Dazai set to the side of him.
As he strokes his cock, it hits Kunikida all at once that he's staring down at Dazai's naked body- that his partner is preparing himself for him. Kunikida grabs Dazai's inner thigh with his free hand, holding him open and squeezing the flesh. He wasn't exactly shocked that this is happening-that they're actually going this far, but it does feel quite a bit surreal.
Slowly, Dazai pulls his fingers out. Instinctively, Kunikida brings his hips inwards, and Dazai's knees cage in his waist.
Their dicks are close to each other already, so Kunikida rests his hard length atop Dazai's. Purely spontaneous, they lightly grind into each other. Sighs escape their lips, as sparks of pleasure from the contact alight through them.
"Wow.." Dazai marvels, openly observing. "I look small compared to you.."
"No, you look above average, proportional to your height." Kunikida corrects him.
"Oh." Dazai seems surprised by Kunikida's response.
Did he expect him not to know what the average penis size is? At his age? And with what an outlier he himself has?
Kunikida thinks harder before he starts questioning.
"Wait- did you want me to agree with you? This kind of size difference, is it a kink for you?"
Dazai looks at him as though he's grown an extra head- then bursts out laughing.
"Wow. You sure know a lot, don't you?" Dazai pats Kunikida's shoulder.
"I don't know." Kunikida knows he's flushed. "You mean about gay sex?"
"That, and kinks, and penises."
Kunikida stares at him deadpan.
"This is why I find myself choking you so often."
Dazai pats Kunikida's shoulder again in mock condolence.
"That's cool. I like it."
Kunikida sighs, defeated. And yet their dicks are still rock hard and pressed up against each other.
"I don't actually know much. I've never had sex with a man, but I have seen porn and I have thought about it."
"I also think about gay sex from time to time. Participate in it even."
Now, even Kunikida is amused by that, but also incredibly curious.
"Often?"
"We'll see how this goes, and I'll let you know."
"O-kay then." Kunikida's face feels like he has a sun burn.
Perhaps he shouldn't brush off the implication this could happen again. After all, it would make working with him awkward if they fucked once and then never knew where they stood after that. The proposal this doesn't have to be a one-time-thing is actually reassuring to Kunikida.
Dazai scoots closer to the edge of the bed. Hips draw back and he lowers himself to better align with Dazai's entrance.
Torn between Dazai's expression and where their bodies collide, he presses the head into him, savoring the feeling of trying to breach his tightness. Honestly, Kunikida isn't sure they'll be able to get it in.
"Go ah-ahead- mm- I can take it-" His voice wasn't the most convincing, but to Kunikida's ears it was uncharacteristically hushed and sweet.
So, the blond applies a bit more pressure, with a firm grip on his shaft keeping his cock steady as he pushes forward.
"Nngh!"
Finally, Kunikida has properly penetrated him and he's so tight the blond gets lightheaded.
"Hhssshh.." Squirming under him, Dazai winces with a hiss.
Kunikida waits, watching his reactions and movements.
Their eyes meet and Dazai nods, going still. "It's okay.." He breathes out before explaining; "It kinda just hurts if you stay by the entrance- Nnm. You can-hhh-go deeper.."
The blonde pushes his glasses up the bridge of his nose. This sight is something he couldn't chance missing lest he live with a lifetime of regret.. Dazai stretches out around him until his rim is so thin it goes invisible, and his insides grip his cock for dear life as he draws back. Practically sticking to Kunikida, it's so hot and tight in there. Dazai moans- Kunikida takes that to mean it's really okay to push deeper inside.
Every centimeter squeezed tightly, Kunikida continues to rock back and forth into him, loosening Dazai up and slipping in further with every slide of his hips.
"Yeah that's it.." Dazai mewls, and Kunikida would be lying if he said it wasn't pretty. "Do it just like that.. Keep going deeper as you thrust in.."
Kunikida does exactly as he says, ears burning as he follows his instructions. Sounds from their slick skin meeting, heavy breaths, and Dazai's moaning are filling the air around them. The pleasure so overwhelming Kunikida doesn't even notice how quick and rough he's getting with him until he says something.
"Mmm.. Ah-ah! I know-nngh- I know you've got a lot of pent up frustration with me- nn-ah! Gghh.. But- nnggh-! I h-have to be able to walk for this m-mission!"
"Thought you said you could take it?" Kunikida questions him, unrelenting.
As if that's all he needed to hear, Dazai's deepest insides give up, letting Kunikida's cock create a bulge in the thin, bandaged man's tummy as he finally gets all the way inside him.
Dazai's mouth is open, eyes wide and unfocused, and he clearly notices the same phenomenon Kunikida is enthralled by.
Kunikida grabs Dazai from under his hips, and lifts him. The angle changes for him, but it's much more drastic for Dazai judging by the look on his face.
It's the perfect leverage, with gravity working for Kunikida, and against him. Dazai's sounds are mixes of moans and whimpers- Pleasure and pain, but he doesn't say a word as Kunikida fucks him so deep he can follow the outline of his cock in his stomach visibly-
Pure, irrational bliss previously unknown to the usually reasonable detective, Dazai clenches Kunikida's entire length from base to tip, spasming around him. Uncontrolled, Kunikida's strokes become rougher, his hands not really holding Dazai's hips in place but moreso letting him manipulate Dazai's hips in a circular motion- Dramatically, the tip of his cock repeatedly changes placement in his lower abdomen.
It's mind meltingly hot to watch happen.
Balls tightening, Kunikida doesn't want to end this anytime soon but can't go easy on Dazai either. He's got a goal: to wear him out to the point he won't be able to annoy him again this evening. Kunikida is sure if Dazai gets fucked hard enough or loses enough oxygen in his brain he'll have to bother Kunikida less than he normally does.
Suddenly, Kunikida comes back to himself, hearing Dazai's voice cursing and screaming.
"Fuck-fuck-fuck-it's so much-it's so much-"
"Shhhh.." Kunikida just fucking knows anybody in a 20 meter radius would be able to hear him. "You're fine. You can take it."
"Says the guy so deep in my guts we can see his dick in my stomach!" Dazai yells at him, and it would have been funny if it weren't for how good it feels. Kunikida breathes out a chuckle at the thought of someone overhearing that in spite of himself.
Next, Kunikida forces his legs further apart with his body, leaning over him until what he really wanted was in reach.
Kunikida's hands enclose Dazai's windpipe, temporarily pausing the noisemaking, letting him focus on the pleasure he's found inside of Dazai. Roughly, Kunikida takes him all the way, quieting Dazai's complaints until Dazai's almost silent, gasping mouth is drooling. He lets him go long enough for Dazai to swallow and get a breath in, and repeats that intense and blissful process a few times over before completely releasing him.
"Fuck- fuck-" Dazai can only swear as Kunikida's cock stretches him out and grinds in place as deep as he can reach.
Kunikida doesn't say anything to warn Dazai as he brings his knees together and turns him on his side, still inside of him.
"Let me have you on your knees." Kunikida commands.
Sluggish, assuming his brain hadn't become mush already, Dazai is slow to push himself up and turn around. The motion makes Kunikida slip out of him and Kunikida takes the opportunity to pour more lube over his dick. Shakily, Dazai props himself up on all fours, lowering his chest and inching backwards, seeking contact and guidance. When Kunikida rests his hand at his waist, Dazai freezes.
Opposite hand holding his dick, Kunikida taps Dazai's hole with it just to watch him tremble in anticipation..
Then, he's pressing his cock back into indescribable bliss, listening to Dazai moan as he is filled to the brim. For the first few strokes, Kunikida pulls Dazai by the waist back onto him. Palms almost cover the small of his back and for the first time Kunikida takes in just how dramatic the differences in their bodies is. How easy it could be for him to overpower him, at least in the physical sense.
Who was Kunikida not to take advantage of the opportunity offered to him?
Hands encircle Dazai's thin wrists, pulling them straight backwards at his sides. Bony outlines of his elbows visible beneath the bandages, Kunikida holds him in a firm grip for complete control. Hips rise up to meet his thrusts as Dazai's chest lowers, forcing Dazai's back into an arch as Kunikida pounds into him.
"あーあーあー"
Kunikida has to admit his cries are cute as they're cut off by each thrust.
The view is a legendary mental image.. Kunikida's cock repeatedly disappearing into the thin body below him.. It's almost as though he was made just for this. Until now, Kunikida didn't think of being good at sex as a talent.
But Kunikida should have known better than to do such a rough position on Dazai of all people.. Their neighbors in rooms next to them, and across the hall could definitely hear his slutty screaming. The brunet is the most unsubtle man Kunikida has ever met and he hates to realize that bold nature must've worked on him because he might be a tad dense in a few aspects.
He doesn't see reason to stop given his partner is vocally enjoying being tugged and tossed around like a toy, beside trying to get him quiet.
It seemed a little late for that in Kunikida's clouded defense.
"Shut up or I'm choking you again." Kunikida threatens through grit teeth.
Dazai's voice remains incredibly loud, then he's nodding his head like he wants that more than anything in the world.
Kunikida's arm reaches forward without his mind ever thinking.
Arm wrapping around soft bandages, a fragile windpipe against his forearm, something he has done plenty of times before. This choke hold is a fair bit less precise than with his hands.
Other arm bracing around his chest, Kunikida pulls him upright. Shifting his insides around him causes new choked noises to leave his lips. Roughly, Kunikida fucks him harsh even when Dazai's body weight falls back into him. There's not much Kunikida is capable of thinking about or feeling outside of the exquisite atmosphere his dick is trapped in.
It's a miracle he notices Dazai's fingers trying to pry space between his arm and his neck, but once Dazai manages to get an audible breath in his lungs his whole body rocked with trembles.
With that warning, Dazai's insides clamp down from the rim at the base to the deepest point he could reach at the tip. A strangled groan tells Kunikida what he thought he knew.. Dazai is coming untouched in his grasp.
Kunikida's inhibitions are nowhere to be found as an obscene slapping sound echoes from contact with Dazai's ass to his thighs. Dazai's tightness has melted around him- molded to his cock- and his garbled moans are further evidence. It's really too easy for Kunikida to ram him hard and deep when the gravity of Dazai's own body weight is falling back so heavily against him. Kunikida's breaths become clipped and fervent. Heat spreads underneath his skin as though his entire body is in a sauna, becoming so sensitive he notices the faintest slides of Dazai's bare skin against his.
The blond is so close his thrusts began stuttering.
Kunikida frees him from the choke hold with his last reserve of consideration- Then, he shoves Dazai forward, leaving him to catch himself. Once he's back down, Kunikida tangles his fist into his hair and pushes him face down into the bed.
"Aa! Nngh-"
Dazai's hands grip the bed sheets until his knuckles turn white- His voice crying out- partially muffled by the bedspread- is about to send Kunikida over the edge. Hips push back onto him, readily receiving all of Kunikida, as though his body is chasing it despite Kunikida pressing his face into the mattress and the brutalizing he's giving his insides.
"Haa~ Go ahead, Kunikida breed me."
Kunikida's train of thoughts crashes in erotic error trying to make sense of what Dazai said.
He's.. a man, after all.
Men can't be bred, can they?
As timing allowed, Kunikida is too close to resist what seems to be both an invitation and permission to come inside him.
Hard thrusts and a firm grip on his waist work his partner's body over his cock- Repeatedly hollowing his deepest insides and filling his stomach with his dick. Dazai moans so pathetically- Kunikida witnesses drool spill past his lips onto the sheets.
Bursting waves of pleasure take over his entire body as he grinds his cock roughly into his annoying partner. Soft mewls continue to flow out of him, and Kunikida memorizes the feeling of melting inside him, savoring his peaceful submission through the aftershocks. Slowly withdrawing, and pulling his asscheeks apart to get a proper view of the gape he made- Dazai's reddened puffy hole left open, clenching on nothing, slowly shrinking now that Kunikida is no longer obscenely stretching it out.
Cock twitching at the lewd sight.
Dazai soon collapses, and seeing him that out of breath and worn out makes Kunikida's chest fill with pride.
"Hey, I'm going to shower before dinner. You're welcome to join me.
"Yeah, no, I can't get up."
"Understandable." Kunikida commiserates.
"Can I get you anything before I go?"
Dazai hums as he thinks. "Just a towel."
Kunikida nods, immediately walking off the fetch him a small one from the bathroom.
"Here." He sets it next to his splayed out form.
"Thanks~"
Honestly, it was probably for the best Dazai didn't join him for a shower. He would have certainly distracted him past his self-set five-minute-shower rule, and Kunikida would have had no time alone with his thoughts.
Being truthful with himself, he let's Dazai get away with so many things. Whether that's due to some fondness or affection for him, he doesn't want to say that's so. Now, after having acted on this impulses, he just knows Dazai will use this as a means to get what he wants out of him, too. Though.. Kunikida can't really say he minds it.
It doesn't take him long at all to get ready with no Dazai all up in his business.
"Okay, I'm leaving." Kunikida announces.
Dazai had moved under the covers. He perks up, lifting his head from the pillow.
"Could you bring something back for me?"
"Sure. What do you want?"
Dazai smiles, resting his head.
"You know what I like. I'm okay with anything."
Kunikida ponders his options for a brief second.
"I'll bring back dinner, so I can eat with you."
"O~kay~" Pretty brown eyes close, and everything about his demeanor gives away how content he is with this arrangement.
Of course, Kunikida as well.