Work Text:
Saya's in the pool house on the PS5 when Eunseom pulls the sliding glass door open and stumbles inside, whispering, absurdly, for Saya to be quiet. It's a hot night, and his hair is soaked with sweat, curls coiled tighter for it. He must have walked home from Tanya's party.
"You be quiet, you idiot, come here," Saya says, putting the controller down and making room on the huge sectional that's been their playground since they made forts out of the cushions as children. At second thought, and a little thrill in his belly, he adds, "And shut the blinds."
"And shut the blinds," Eunseom parrots in a cartoonish voice. He is absolutely annihilated. Though it takes him longer than it should, he does as he's told, kicks his sneakers off, and all but swan dives onto the couch, his head coming to rest on Saya's lap. "Why are you being so bossy?"
Saya rakes Eunseom's hair off his forehead. "Because you like it. You fucking brat."
"I do like it," Eunseom says with a loopy, crooked grin.
"Who did you fuck tonight, baby?"
"How do you know I fucked somebody tonight?" Eunseom tries to bite his fingers, and Saya lets him chew the meat of his thumb like an unruly puppy.
"Because you smell like pussy."
Giggling, wet and warm against Saya's palm, Eunseom scrunches his eyes shut. "I do not. Oh my god. Don't be gross."
"It's not gross. It's the truth. Did you eat her out?"
Still smiling, Eunseom wiggles and hums in affirmative, and it's so cute and stupid that Saya feels like he'll burst with love for his beautiful mess of a brother. He pulls Eunseom up, propping him to sit, and rubs his crotch over his jeans. They kiss a while, Saya rubbing him, getting him half-hard, and Eunseom submitting to being kissed like he's a meal. It makes Saya crazy. It makes him feverish.
He can taste Tanya on him.
"You're so fucked up," Saya observes affectionately, loving the way Eunseom is boneless and warm. "I can't even get you hard."
"I feel hard, it's just not working," Eunseom explains, very earnestly.
Saya kisses his neck and scrapes his teeth at his salty skin. "Want me to fuck you?"
"I do." Eunseom paws at him. "Uh huh."
"Did you lock the door?"
"Yeah. Yeah. When I shut the blinds. Saya," Eunseom whines. "Do it, do it please."
"Hush, brat." Saya hates Eunseom's tight fucking jeans. It's like opening a package that's been taped up too enthusiastically. "Will you — stop moving? I'm trying to get you undressed."
"I'm helping!" Eunseom insists. He's not. But somehow, despite his writhing around like an octopus, they get his jeans off, and he's wearing nothing underneath. His dick looks so cute.
Saya dives for it, holding Eunseom's wrists and pinning them to the couch so that Eunseom doesn't pull his hair. As expected, Eunseom tastes like sex here too. Tacky with her fluids and his come. His balls are warm, loose from the walk in the heat. He smells so strong it's intoxicating.
"Oh fuck," Eunseom is babbling. "Oh fuck, Saya. Don't torture me my dick is broken, Saya. What are you doing. I could have showered first. You. Fuck, Saya, come on. Don't be mean, you're so mean!"
Using his teeth for a moment, Saya reminds him that he can really be mean if he wants to be. Eunseom yelps.
"You said you'd fuck me," Eunseom whimpers, eyes round and genuinely wet. Any time Saya thinks he's in control, Eunseom makes a goddamned face like this and reminds him that he's powerless. The little shit.
"When have I ever lied to you?" Saya asks.
Looking relieved, and a little smug, though his eyes are still teary, Eunseom grins. "Never."
It's true, too. Saya wouldn't. Not to his brother.
Saya reaches under the cushions for the lube, and Eunseom hikes his knees up and spreads his thighs wide. Eunseom still has his tee shirt on, and he twists one hand into it and drags it up his belly, fidgeting with anticipation. Shoving Eunseom's jeans under his ass so they don't stain the couch, Saya flips the cap open and squirts the slick lube all over his balls and crack, ignoring Eunseom's wheezy giggling.
"You're obnoxious," Saya says, kissing the inside of his knee and working one finger into him to make him squirm. He likes it here between his legs, kneeling and excited, because Eunseom is his and always has been.
"You love me anyway," Eunseom says with a big grin.
It feels like being smacked right in the solar plexus. Saya feels his voice coarsen with emotion and need. "I do," he says, surging forward to kiss Eunseom some more while he fingers him lazily, letting both of them feel it, how tight Eunseom is, but how welcoming, how much he's always ready for it, how much he wants it.
"Ha," Eunseom laughs out, a quiet little huff of breath. "You're shaking."
"I am going to smother you," Saya says into his mouth. "Shut up."
In the light of the TV, he sees Eunseom's eyes widen, his pupils shift every so slightly, and that fucker, it's always something. Something new. "Dare you to," he whispers.
Without waiting for his brain to catch up with the impulse, Saya cups his hand over Eunseom's wet mouth, and presses the blade of his palm against his nostrils, not restricting his airway, but coming pretty damn close. As expected, Eunseom jolts, his insides clenching around Saya's fingers and his lips vibrating with a deep moan.
"You like that, baby?" Saya asks, punctuating the question with a raking curl of his fingers.
It's Eunseom's turn to shake. He trembles beautifully, not hard but as close as he's gonna get. His dick leaks precome in a pearly little pool in the hairs on his belly, and he grasps at Saya's forearm, rubbing it like he's jerking him off.
It's more than Saya can handle. He stops messing with Eunseom's mouth and shoves his pajama pants down and uses his slippery fingers to do a half-assed job at slicking himself up before fucking into Eunseom in desperate, careful increments. He tries to stay in control, but this feels like something else. Like being possessed. "Fuck," he groans, bottoming out and snaking his arms around Eunseom. They shift together, in perfect sync, Eunseom getting on his back and tucking his heels against Saya, urging him, making space for him, opening him for him like the good, good boy he is.
The truth is, Saya would like to be a lover who can make things last, who can tease and torment, but once he's in Eunseom he can't hold back, he has to chase the pleasure, the feeling that's better than any other feeling in the world. Eunseom gasping and holding onto him, Eunseom so fucking hot inside, so hot for him.
"Saya," Eunseom is urging, scratching his back, baring his long throat. The way he says his name, it's too much.
"Yeah, I've got you," Saya says shakily, trying to make it slow, make it last, hold on, fuck. "Eunseom, fuck. Can I come in you?" He always asks. He can't help it. It's such a gift, and not one he'd ever take for granted.
"Uh huh," Eunseom babbles. "Uh huh, uh huh. Yeah. Lemme feel it, lemme feel you."
Saya comes like he's surfacing from holding his breath too long in the pool. He hears himself shout, some broken, senseless sound, and then he's shuddering and coming and coming, grinding deep, making sure every pulse of it is tucked deep in Eunseom. He wants him to feel it. He wants him to be sore tomorrow in class, and remember who had him first and last.
"I love you," Eunseom is murmuring, petting his back and patting his bun, which has come half loose, long waves getting in both their faces. "You fuck me so good, my big brother."
Saya laughs, letting his weight drop entirely on Eunseom. He'll soften in him. Serves him right. "Shut up, Eunseom."
They kiss lazily, both catching their breath, the screensaver casting blue light in flickers, so that it looks like they're underwater, in an aquarium, in a world all their own.
He knows he's still trembling, but Eunseom rubs his back in slow, soft strokes, and doesn't mention it.