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little brother character

Summary:

He laughs, jostling Takashi affectionately. “My agent calls you the ‘cute little brother character’ for a reason, you know. Maybe I should ask her to actually cast you in my next movie? You’d have a fanclub in minutes.”

“Whatever you say, nii-san.”

Shuuichi’s brain screeches to a sudden, clattering halt.

(In which Takashi keeps getting mistaken for Shuuichi's little brother and Shuuichi should really learn to watch his mouth.)

Notes:

Okay so first of all, I blame Saturniidae for enabling me to write this fic. The title is ALSO their fault, so yell at them, not me.

But, uh. This is just...straight filth. Full stop. I have no excuses. Enjoy, lmao.

(And if you enjoyed the fic, or just wanna talk with other fans in a ship-friendly space, come join us on Discord! It's a smaller server, but we're always happy for more people)

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

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“It’s so sweet of you to spend time with your little brother!”

Shuuichi bites back a snicker at Takashi’s put-out expression as they leave the shop, and the mistaken attendant, behind. It’s not the first time this has happened while they were out on a date, and it probably won't be the last, either.

At twenty-one, Takashi’s finally done with his last growth spurt and he’s still a little bit shorter and slighter than Shuuichi. On top of that, it’s summer, and the sun has bleached their hair to a very similar shade, which only adds to the resemblance.

And it certainly doesn’t help that the photoshoot they’re here for—well, that Shuuichi is here for, Takashi is probably going to spend the shooting hours befriending the local youkai—is in a fairly rural town where most people don’t recognize Shuuichi on sight.

Great for uninterrupted dates, not so great for Takashi’s dignity.

He slings an arm around Takashi’s shoulders and tucks his pouting boyfriend into his side, who only puts up the bare minimum of sulky resistance before he relaxes into the hug as they walk.

“In fairness, I did warn you.”

“Shut up, Shuuichi-san.”

He laughs, jostling Takashi affectionately. “My agent calls you the ‘cute little brother character’ for a reason, you know. Maybe I should ask her to actually cast you in my next movie? You’d have a fanclub in minutes.”

Success! Shuuichi gets the exasperated eye-roll he was gunning for and, even better, a charming little blush appears on Takashi’s ears as he clearly tries to fight off the smile ticking at the corner of his mouth. His own deliberately over-the-top grin softens into something less sparkly and infinitely more fond at the sight.

Takashi looks so adorable that it disarms Shuuichi entirely, leaving him wide open for what happens next.

What he really should have remembered is that he’s done nothing but encourage the mischievous streak Takashi has spent the last several years refining. It comes back to bite him when Takashi finally gives into his amusement and says:

“Whatever you say, nii-san.”

—Mouth quirked in the teasing little almost-smirk that always drives Shuuichi mad.

Shuuichi’s brain screeches to a sudden, clattering halt.

‘Nii-san.’

It hits him right in the chest. A punch of unexpected arousal so strong it has him reeling.

He sucks in a sharp breath.

The words should be—are—completely innocuous. Nothing more than a playful joke. But suddenly Shuuichi can’t help but imagine them in a different context—gasped in his ear as he bears Takashi into the bed—whined above him as he swallows around Takashi’s cock.

Oh. Fuck. Shuuichi really wasn’t prepared to learn this about himself today.

(They’ve played around with pet names and endearments before. Takashi’s…extremely vocal reaction to the first time Shuuichi accidentally called him “baby boy” in bed is a treasured memory. So is the time Takashi turned it back on him when he had Shuuichi pinned down and begging.

But nothing quite like this.)

He shuts his eyes briefly against the hot flood of want in his veins. There’s no way Takashi hasn’t noticed his abrupt silence, the way his breathing has sped up. He’s become almost frighteningly good at picking up when Shuuichi is turned-on.

But Takashi doesn’t say anything, just looks at him with searching eyes and increasingly flushed cheeks.

Shuuichi clears his throat, licks suddenly dry lips. “Maybe we should head back to the hotel.” The nice, big, empty hotel. Fully booked up for the crew that won't be arriving until tomorrow.

“Why? Sunset isn’t for a few more hours and I thought you wanted to try that udon place we passed earlier?” Takashi pauses for a second. Then, quietly and edging on coy, “Shuuichi nii-san.”

Oh, hell. Definitely noticed, then, and in a mood to drive Shuuichi up the wall over it.

It’s going to be a very long afternoon.

 


 

Two hours.

Takashi keeps them out for two more hours. And he spends the entire time teasing Shuuichi mercilessly.

The elderly udon shop owner coos over them and Takashi loops their arms together while he goes on about how kind his ‘nii-san’ is.

After lunch they stop at an ice cream cart and Takashi looks directly at him as he licks the melting treat off his fingers and exclaims over how warm it is today, ‘right, Shuuichi nii-san?’

They duck into a hidden alley to kiss and Takashi breathes ‘Shuuichi-nii’ against his lips, smiling at his bitten off groan.

Shuuichi is going to lose his mind. He’s lucky he decided to wear loose jeans today or he wouldn’t be fit to be seen in public. Thankfully, Takashi eventually takes pity on him and turns them back toward the hotel.

By the time they finally make it to their room Shuuichi is practically vibrating out of his own skin.

The door barely locks behind them before he’s pinning Takashi to the wall. Takashi, who’s grinning at him, pleased and shy, the way he always does when he gets Shuuichi this wound up. He’s heart-breakingly beautiful like this.

Shuuichi is going to eat him alive.

He surges forward to kiss that smile away, swallowing the little exhale Takashi lets out as Shuuichi licks into his mouth. Fingers wind their way into his hair and clench, holding on tight while Shuuichi does his best to kiss Takashi senseless.

Judging from the dazed look on his face when Shuuichi pulls back for air, it’s working.

He should really know better than to underestimate Takashi by now, though. One of the hands in his hair slips down to cup him through his jeans and squeezes ever so slightly, Takashi blinking at him with dark, dark eyes.

“What’s this, nii-san?” he asks, voice high and breathy. Shuuichi’s hips jerk uncontrollably and he has to clench his jaw against the need to buck into Takashi’s hand.

So that’s how he wants to play this.

It takes him a long moment to calm down enough to say, “That’s my cock, baby boy.”

Fuck, his voice comes out deep and gutteral and it clearly does something to Takashi, who shivers and knocks his head back into the wall.

Oh,” Takashi gasps, flushing deeper and closing his eyes. “Can I—can I see it?” He sounds utterly overwhelmed, and he’s not the only one. Shuuichi’s just glad he’s not alone in this.

He reaches down to press Takashi’s hand harder against him. “I’ll show you if you’re good for me.”

That gets him a shuddering moan. Takashi bites his lip and goes up on his toes in a desperate attempt to get some friction. The angle’s bad, though, and he yanks his hand out of Shuuichi’s grip to grab his shoulders instead, pulling insistently like he wants Shuuichi to lift him up.

Any other time, Shuuichi would do so in a heartbeat. Right now though, he’s not sure he’ll be able to keep them both up. So he does the next best thing. Grabbing Takashi by the hips, Shuuichi drops to his knees and drags Takashi down to sit across his thighs.

Like this, it’s so very easy to spread Takashi’s legs with his own and grind their clothed erections together.

Nii-san!

Takashi fairly collapses onto him, hips bucking, nails digging sharp little pinpricks into Shuuichi’s shoulders.

“What’s this?” Shuuichi echoes, wedging a hand between them to rub at the head of Takashi’s cock through his jeans. “Are you hard too, sweetheart? Did you get all worked up because of me?” A small patch of wetness blooms under his fingers.

Yes,” Takashi bites out, sounding more like himself. And more than a little impatient. Shuuichi has to smile at his slight break in character, even as he moves to undo Takashi’s jeans and take him out.

“You’re so wet for me,” he breathes. “And so hard, baby. It must hurt. Don’t worry, nii-san will take care of you.”

The words feel thick in his mouth. Almost too much, even for him. He can barely keep speaking past the squirming heat in his stomach.

He tucks Takashi’s face further into his neck as they rock into each other, murmuring, “Do you still want to see my cock baby boy?” A frantic nod. “If I show it to you, will you let nii-san fuck you with it?” A choked groan, and Takashi pulls back enough to look him in the eye and say ‘please.’

Shuuichi nearly breaks the zipper in his rush to get his own jeans open.

Fuck, the sound Takashi makes when he takes himself out will be the death of him, Shuuichi knows it. It takes almost everything he has to keep his hand still, to let Takashi look his fill like he’s actually seeing Shuuichi’s cock for the first time.

“See what you do to me?” he groans, cock jerking in his grip. Takashi tracks the motion, licking his lips as if he’s trying to make Shuuichi lose it entirely

“I want to touch it, nii-san. Can I?”

Oh gods, definitely trying. And succeeding. Shuuichi swears under his breath and clamps down on the base of his cock.

“Just a little, baby,” he says weakly, reaching up to guide one of Takashi’s hands down. Takashi immediately starts tracing the shape of him with feather-light fingers. “Careful, not too much or I won’t be able to fuck you later.”

Takashi’s watching their hands with eyes blown so wide they’re almost black. He looks hungry and they need to move on, now. There’s only so much Shuuichi can take.

Shuuichi lets go and lifts both hands to cup Takashi’s face. He runs a thumb across the seam of his lips, Takashi opening for him easily and sucking around his thumb as he slowly pushes it in.

“Okay,” he manages, gaze locked on Takashi’s bitten-red mouth. He slips his thumb out and replaces it with two fingers, petting them over Takashi’s tongue. “I need you to get these wet now, sweetheart. Can you do that for me?”

Takashi nods, relinquishing his remaining death grip on Shuuichi’s shoulder to grab at his wrist. He keeps eye-contact the entire time, rotating Shuuichi’s wrist so that he can lick and suck over every last inch of the fingers in his mouth, his other hand gently stroking Shuuichi in time with his tongue.

When he flutters his tongue against the sensitive strip of skin between them, Shuuichi has to close his eyes and moan, cock throbbing under Takashi’s touch.

“That’s enough,” he says, pulling them out and batting away the hand in his lap even as Takashi whines at the loss. “Shh, I know, baby. It’s okay, nii-san will make it better.”

That said, he leans forward to kiss Takashi quiet, fingers dropping down to play with his hole. Not entering, not quite yet, just petting and stroking gently.

He keeps it up until Takashi is squirming in his lap, until he breaks the kiss to beg ‘please, nii-san.’

“What do you need sweetheart?”

He waits patiently for Takashi to find his words, fingers rubbing slick circles that probably aren’t helping with his concentration. Shuuichi might be feeling just a little mean, after all the teasing Takashi was doing earlier.

A moment passes before Takashi swallows once, twice, then: “Please fuck me Shuuichi-nii.”

Fuck.

Heat slams through him so fast he’s almost dizzy with it. Shuuichi buries a groan into Takashi’s shoulder, hands almost frantic in their desperation to yank Takashi’s jeans down far enough that he can hoist a leg over his hip and tuck two fingers in to rub directly against the spot that has Takashi shouting.

Hands scrabble at his hair and shoulders as he crowds Takashi against the wall until there’s barely any room between them. Shuuichi can’t go deep or fast like this, not without proper lube, but he can curl his fingers and press, unrelenting, as he grinds their hips together.

Takashi spasms in his arms, trying to squirm and kick out as Shuuichi drives moan after hiccuping moan out of him. He’s clinging and clawing like a wild thing, chanting ‘nii-san, nii-san’ under his breath like he can’t get enough air to scream it under the force of Shuuichi’s onslaught.

“Shh, shh, I’ve got you,” Shuuichi hushes him against the rushing in his ears, “Nii-san’s got you, you can let go.”

Takashi’s voice cracks into a high-pitched whine as he shudders violently. Wet heat slowly seeps into the space between them, slick against Shuuichi’s cock, and he has to swallow around the want in his throat while he fingers Takashi through it.

"Oh, sweetheart, you made a mess," he breathes into Takashi's ear, so achingly hard he can barely get the words out. "Do you want nii-san to clean it up for you?"

The wounded little noise Takashi makes feels like a kick to the chest, like a single drop of water when he's hollowed out and ravenous. He wants to hear it again, now.

Shuuichi just about carries Takashi to the bedroom, clothes scattering across the floor in his hurry to get them both undressed and on the bed within the next five seconds. He doesn’t go straight for the lube, though, not yet. He still has a mess to take care of.

The first touch of his tongue on flushed skin has all the muscles in Takashi’s body tensing. Shuuichi is painstakingly thorough, slowly lapping up the sticky trails on his stomach, his thighs, the crease of his hips. Everywhere there’s even a trace of come, except for Takashi’s cock.

He leaves that for last, until Takashi’s hips are rocking into each stroke and he’s whining in the back of his throat. Then, when Shuuichi can’t wait any longer, he pins Takashi down and licks a wet stripe from root to tip.

Takashi slaps a hand over his mouth to muffle his scream, over-sensitive cock twitching wildly under Shuuichi’s tongue. He’s only half-hard, but he fills rapidly when Shuuichi fits his mouth over the head of Takashi’s cock and sucks, reveling in the smothered sobs.

Shuuichi only allows that for a moment before he pulls off to scold him. “None of that now, sweetheart, nii-san wants to hear you,” he rasps. Takashi shakes his head feverishly, tears glinting in the corner of his eyes, but he lifts his hands to fist the pillows instead.

Beautiful, Shuuichi thinks, smiling at him. “Good boy,” he says and ducks back down to finish what he started.

He has to resist the urge to grind down into the mattress when the hitching cries start up again, this time interspersed with gasps of ‘nii-san’ and ‘Shuuichi-nii’ and ‘please’ that do nothing to calm the burning in his blood.

They’re both a complete wreck by the time Shuuichi finally grabs for the lube. He fumbles to get his fingers slicked up properly and watches in breathless awe the way Takashi’s expression goes slack when he’s entered.

It’s impossible to stay quiet watching him and Shuuichi doesn’t even try. “—That’s it baby boy, you’re so good for me—” His voice stutters out as Takashi clenches hard around his fingers, “—ohfuck. You need to relax sweetheart, nii-san will take care of you, I promise, I’ll make you feel so good—”

Takashi arches off the bed with a broken cry, cock jerking against his stomach. His hands leave the pillow to tug at Shuuichi’s hair insistently as he pants, “In me, please. I’m ready Shuuichi-nii, please fuck me.”

There’s absolutely no way Shuuichi can say no to that.

He’s not going to last long, not a chance, and Shuuichi has to grit his teeth and hold on as he bottoms out. Takashi pulls him into a biting kiss, sighing in approval when Shuuichi bears his full weight down on him and curls his arms under Takashi’s back.

Even though he tries to take it slow, tries to keep his thrusts deep and even, it’s only a matter of minutes before he feels pressure build at the base of his cock.

And then his next thrust has Takashi clenching down and spilling all over them, has him moaning ‘Shuuichi-nii’ right in Shuuichi’s ear, and that's it. He’s helpless against it, shaking and shattering into a thousand pieces as he comes.

“Takashi,” he groans, clinging tight to the man still shuddering beneath him. “Takashi.

 


 

“So,” Shuuichi starts a few minutes later, wincing at the rasp in his voice, “That happened.”

Takashi cracks up immediately, curling to bury his face in Shuuichi’s neck as his shoulders shake in helpless laughter. Shuuichi loops his arms around him, snickering into Takashi’s hair. Post-sex endorphins are really something.

Eventually, though, they manage to calm down, and Takashi levers himself up onto his elbow to stare at Shuuichi thoughtfully. “I guess your agent was right when she told me you have a brother complex,” he says with no small amount of amusement.

“I do not—” Shuuichi starts to protest, but he clicks his mouth shut at Takashi’s raised eyebrow. He coughs, averting his eyes from that knowing gaze.

Tonight has rather emphatically proven that he does have a brother complex, after all.

“I liked it too,” Takashi assures him, leaning in to kiss Shuuichi sweetly. And while that’s fairly obvious, all things considered, it’s still nice to hear. But he still has one more question.

“...Can we do that again sometime?” he asks, breaking away from the kiss to rub the back of his neck sheepishly.

Takashi smiles at him, reaching up to tug gently at a lock of his hair. “Absolutely.” His smile turns mischievous. “Nii-san.”

Shuuichi sputters and hides his reddening face in the pillows. Oh, he just knows Takashi is going to use this against him forever. He should probably resign himself to a lot of embarrassment in the near future.

But then again, he thinks, listening to Takashi’s gentle chuckles, there are worse things to look forward to.

Notes:

Apparently I'm just going down the list of kinks with these two, whoops. But I mean...the rest of the fandom has fluffy gen pretty much on lockdown so...Why write wholesome brotherly content when I can write pure smut instead? Or something like that.

Also I fully believe in Takashi's right to be a little shit when he's older and more confident.

Thanks for reading and commenting <3