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doobean · 4 months

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AND BACK AGAIN ━ BAROU SHOEI + NAGI SEISHIRO

synopsis: Nagi doesn't know which one he should be more afraid of: your pink silicone strap on, or your boyfriend's giant cock.

contents: afab!fem!reader, dom!reader, sub!nagi, established relationship (barou + reader), m/m/f, oral (male + female receiving), handjobs, face sitting, barounagi elements, pegging, anal (male receiving), dirty talk, multiple orgasms, overstimulation, creampies wc: 3.2k a/n: starting off the new year strong with this fic LMAO a shameless part two of THIS that nobody asked for. Beta’d by @pipppinn

It starts with an awful joke. A gag gift from you on his birthday.

In the box, which you had neatly wrapped in cacti themed paper, stands a big, pink dildo with a flared base and belt. You flash a wink at him while Barou only grumbles under his breath in the seat next to you, shoving the last slice of cake in his mouth. Nagi’s honestly surprised that he’s still hanging around you two, surprised that his old college roommate hasn’t killed him yet in his sleep for all the sexual and non-sexual acts he’s committed within the past two months.

It’s almost unspoken at this point, Nagi notices. No one has brought up the status of the relationship, but Nagi thinks whatever this is, it doesn’t necessarily need an explanation. More often than not, Nagi spends his weekends over, body pressed against whomever he didn’t piss off that day, and participating in acts that his best friend might lose his shit over.

“You’re in an open relationship?!” Reo gawked at him during brunch one day.

Nagi hadn’t seen him since his business trip in Hong Kong earlier in the year. The last time Nagi remembered telling Reo before he boarded the plane was probably something unrelated to his growing crush on you and Barou. And, during this friendly catch up meal, Reo almost gagged on his steak when he did tell him about his feelings and what you guys have done.

“Not open,” Nagi corrected, because he’s pretty sure that you and Barou aren’t sexually seeing anyone else other than him and, if you guys were, well he’d feel pretty upset over it. “Polyamorous is what people call it.”

Needless to say, Reo needed a moment to rewire his brain to understand just how Nagi, self proclaimed loser and bum, got himself between the power couple on the block. Nagi’s also waiting for that answer, too. Though, he might just get to understand a little bit better tonight.

Nagi knows it’s only half a joke and half a misguided attempt to help improve the bedroom sex life, which was already phenomenal in his opinion, when you tell him, “I think you would look cute with this.”

To which, he responds, “Mine is bigger.”

That makes Barou scoff, “She clearly meant with it inside of you, dumbass.” And Nagi thinks the name is slightly endearing, coming from a man like Barou.

But now the thought of this, the fleshy, realistic looking penis, inside of his ass? Nagi laughs, and he’s not really sure what to make of it. You’re giggling, hiding your face in your hands. At this sight, Nagi can’t stop the curious little voice in the back of his head that wonders what using it would be like.

The strap-on ends up sitting on your vanity as the three of you attempt to wrap up his mini birthday celebration. Barou’s gift turns out to be more thoughtful than Nagi originally would’ve thought. He had given him a grow lamp and a light meter for Choki. Barou then starts explaining the process and science behind it, but Nagi zones out the moment he throws in the words ‘photosynthesis’ and ‘self-care’ because Nagi was sure Barou was scolding him afterwards.

The sex toy appears by his face again when the three of you are laying in bed, limbs entangled with one another. You’re holding it in your hands, suspending towards the ceiling light to read the fine print on the side of the fake penis.

“Perfectly sized for beginners. The pink curved tip is made for working her g-spot or his p-spot,” you’re the only one laughing at the comment while Nagi and Barou exchange a look. “It’ll be fun, don’t you think, Sei?”

It would be a complete joke to Nagi if he were to lie about his curiosity. Since he’s first seen it, he can’t stop thinking about it. He takes the toy in his hands when you toss it to him. Nagi weighs it in his hands, then runs his fingers over the ridges and fake veins. It’s firm, yet still soft, and his own dick is now currently twitching at the mere idea of it up his ass.

His role in your relationship was to always dominate both you and Barou, as surprising as others would assume. He’s stuck his dick in Barou more times than he has with your mouth and between your breasts, which also kinda says a lot — but he’s not ready for that emotional conversation with a certain grumpy lion just yet.

“Shoei, how does it feel when I stick it in?” Nagi successfully dodges a pillow that’s thrown his way because Barou still isn’t used to him calling him by his first name. What a tsun, he thinks.

“Why the fuck are you asking me that now?”

“Because you always complain about how full—”

“I do not complain about—”

“Boys,” you pinch both of their cheeks in unison, applying the pressure and strength of an entire wrestling team in your fingers. “Calm down for just a second. Shoei, it’s his birthday, he’s just curious.”

Bingo.

Although his cheek hurts like hell, Nagi loves it whenever you end up siding with him. It always sets something dangerous and delirious off in the other male and Nagi loves getting the back handed treatment from it later on.

“Well,” Barou sighs and flushes, quite badly, while trying to say the rest as casually as he can. “It’s tight, no shit. Feels like sometimes my ass might tear from how rough you’re going… but it’s a good feeling once you get used to the size.” Barou coughs out the last bit into a fist.

Nagi shifts his face towards your chest and nuzzles against it, humming in content. “Hm, is that so? Doesn’t sound too bad, I guess.”

You giggle again and press a small kiss to his forehead, it makes Nagi melt a little bit. “I’ve been thinking about it for a while, actually.” you tell him, voice low and smoldering. “Plus, we’re all squeaky clean from the shower and have nothing to do for the rest of the night…” you trail off and glance at Barou, waiting for his reaction.

His response comes in the form of sitting up and grabbing Nagi by the thighs, positioning him face down against the pillows. Nagi feels his face burning up, feeling mildly exposed in this position despite being fully clothed, and he hears your weight shift around on the mattress, the sounds of metal clicking together, and then more giggling.

Nagi doesn’t dare to move when Barou reaches over and pulls his sweats down to his thighs, and he doesn’t say anything when the other male begins tugging at his length by his side. Nagi bites back an embarrassingly loud moan as the cool surface of the dildo trails down his ass combined with Barou’s erotic handjob. He’s more turned on than ever in his entire life. His dick is painfully rock hard from just a few touches and a piece of plastic, soon he’s forming a damp spot on the mattress sheets as your hands start to knead his ass.

You press a trail of kisses down his back as your lubed fingers circle around his entrance. Nagi lets out a shudder when a finger slips in. It feels strange, this sensation, the pressure of something penetrating him. You take your time prepping him, cooing and sending reassurance to him but Nagi can’t seem to focus on anything right now. He starts to buck his hips against Barou’s hands, slowly getting addicted to the feeling of his ass getting probed. You soon add another finger, curling, and thrusting them in and out, while pressing wet kisses on his ass.

“You’re doing so well, Seishiro,” you praise, voice breathless. Hearing his full name while getting treated like this, it feels so fucking nice to Nagi.

You then curl your digits again, this time to the left, and pleasure surges through Nagi’s entire body. The stretch and pull of his walls, it’s delicious, and Nagi starts incoherently babbling. Both you and Barou take notice and fasten up the pace, following the cues of his whiney voice and body until he’s completely out of breath and ends up hugging the pillow close, burying his face in it.

“I want more—” he gasps.

“Think you’re ready?” Barou grunts out as he brushes some of Nagi’s sweat covered bangs from his face. Slowly, Nagi glances up at him, the usual banter and light teasing dies in his throat as he nods weakly.

The coolness from the dildo comes back again as you run it over his ass, slick with lubricant. One of your hands is gently stroking the side of his hips while the other positions the plastic length up against his entrance. Nagi sharply inhales and sinks his teeth into the pillow as the tip edges itself inside, tears already threatening to spill.

It hurts, to say the least. There’s a small twinge of pleasure, but it’s mostly just burning pain, nothing like the expertise and gentleness of your fingers earlier. Nagi groans loudly when he finally bottoms you out and buries his face deeper into the pillow, trying his best to muffle the incoming sounds.

He feels Barou raking his callous fingers through his white locks, tenderly, mumbling that the pain will subside soon while his other free hand is still occupied on Nagi’s cock.

Nagi feels his heart pounding in his chest, and there’s a heat under his skin that’s making him feel almost lightheaded. He leans into Barou’s touch and can only make out a quiet noise signaling that he understood because, everything right now, is just too much.

You begin moving your hips in small increments, testing the size and his body’s reactions. “Are you okay?” You ask, voice soft as you thrust shallowly.

Okay would be an understatement. Nagi doesn’t know which is hotter: being fucked by you, having his dick being milked by Barou, or learning that he loves having his ass played with. Whichever it is, this is just about the hottest thing he can possibly imagine. Just like as Barou said, the pain subsides fairly quickly as Nagi slowly adjusts to the dildo a bit more every time you tilt your hips.

“Y-Yeah—” Nagi pants, twisting his fists into the bedsheets. “Give me more, please…”

You let your thrusts grow deeper, faster, and the sounds from Nagi intensify in volume as the feeling grows fuller. He cranes his neck around to get a good look at you, wanting to see what kind of expression you wear when you’re fucking him, and the sight makes him feel like he’s breathing for the first time.

You’re beautiful. The way your breasts bounce, half hanging out from your bra, your eyes are half-lidded with arousal as you watch him, gaze filled with liquid fire, intense and downright intoxicated. Nagi lets out another loud moan when you angle your hips to the left, hitting that special spot inside of him, causing his toes to curl and eyes rolling to the back of his head.

Suddenly, a pair of rough hands grips the sides of his face and Nagi’s forced to face with Barou’s own raging arousal. “You’re being so fucking loud.” Barou presses his leaking tip against Nagi’s already gaping mouth.

It doesn’t take Nagi much convincing before lurching forward and swallowing Barou’s thick tip, lapping at his pre and watching the way his defined abs tighten with every lick. When you press against his prostate and make him sob in desperation, Nagi hollows out his cheeks and takes Barou’s length deeper with vigor, like he’s the only thing tethering him to the ground as you threaten to take his soul from his body.

Barou’s breath is ragged as his hips press deeper into his mouth, grinding into him with incremental thrusts that are almost too much, sending dizziness to Nagi’s head. Drool drips down his lips, Barou’s cock on his tongue feels heavy and full, but it’s slightly more bearable when Nagi looks up through his teary lashes at the other male’s flushed expression.

There’s a moment, a pause, where all he hears is breathing.

And then movement.

Both you and Barou set the pace to be harsh and frantic, any sort of slight movement and Nagi finds himself wailing, the sensation being completely all consuming. No matter how much he wants to flail around, your hands are glued to his hips and Barou isn’t letting go of his face easily unless it’s for a momentary air break.

Nagi immediately feels something coiling in his stomach when one of your hands glides down his ass to cup his balls, fondling them gently. He whines against Barou’s cock and bucks into the mattress desperately, the rest of his limbs trembling.

“Do you want to take this every night?” You ask, giving his balls a slight squeeze. Nagi’s walls tighten around the dildo when you thrust it deeper, his cock dripping a steady stream of precum onto the bed. Then, you lean forward, he hears you and Barou exchange lewd moans and cries above him, before continuing, “Or do you want Shoei to fuck you? Want him to put his cock in you and spill his seed in your ass? I bet he’d cum buckets in your greedy little hole.”

Nagi bites into the pillow to keep the ragged sounds at bay, but it isn’t enough to contain the broken sob that tears through his throat as Barou finally pulls away, leaving behind a sloppy, thick trail of saliva. “I-I want…”

Barou is looking down at him and Nagi wants to feel upset, wants to say something witty back, but he can’t help but to think what he would feel like inside of him.

Barou rubs his arousal and repositions himself to the back. You chuckle, knowing the answer, and slowly pull out, giving Nagi’s ass a farewell slap before kissing Barou. “Be careful with him, okay?”

“You’re going to baby him too much,” Barou grunts, but the way he places his hands on Nagi’s hips, carefully flipping him over so that he’s resting flat on his back, and the way he ebbs his tip over his hole — it’s gentle and almost tender.

You discard the strap-on and hover over Nagi’s face, your thumbs brushing over his perky nipples as you begin to lower yourself on his face. “Make me cum, cutie.”

“Mhm,” he bites his lips to stifle a moan as Barou begins sliding his length in.

Bigger. Thicker. Heavier than the dildo.

Nagi almost wants to scream as another rush of arousal courses through him.

It stretches Nagi even further as his walls clenched around his cock, balls tightening and cock jumping against his own stomach. He lets out a high, choked breath as you fully lower yourself on top, the sweetness of your folds engulf his senses and your hands immediately dart towards Nagi’s length, encasing it in a tight grip. You stop to palm at his tip until he’s whimpering and squirming, his hips rising into short, aborted thrusts, before you work your hand down to the base again.

Nagi’s knees rise, heels digging into the mattress, from the overstimulation and Barou takes this opportunity to quicken the pace. He takes hold of Nagi’s legs, setting them around his waist, and breathes heavily through his nose with several snaps of his hips. You thumb his leaking slit at the same time, gathering them up in your palm, and smearing the precum all over his head and around his shaft until Nagi is jolting and crying at every thrust.

“T-Too much—! I’m gonna—” but the rest of the words drown out, erased from Nagi’s mind, and he feels himself coming undone by your hands, streaks of heavy white painting his lower stomach and chest.

“Easy there, Seishiro,” you rasp out, hands finding home on his chest and you begin to fuck yourself on his tongue until he feels your slick liquid dripping down his throat.

You cum with a cry, cursing up a storm, thighs shaking around his head that makes him foggy and dizzy, before rolling off and slumping to his side. You close the distance between his lips, tasting yourself and swallowing the rest of his sobs and pleas as Barou chases his own end.

“We got you,” you murmur, pulling away and kissing Barou in turn.

Everything still feels new and electrifying as Nagi is slowly trying to calm himself from his release — the burning in his thighs from hugging Barou’s waist, the steady rhythm pounding against his prostate, listening to the other male’s quiet but rough groans with every snap, the possessive grip on his hips — it’s an addictive feeling. Nagi doesn’t fight when the heavy feeling drapes over and swallows him whole, he doesn’t tamper with the urge to writhe and whine, and lets Barou devour him whole when he finally cums inside.

Barou exits him so abruptly that Nagi can’t help but moan at the suddenness of his absence. He whimpers pitifully and thrusts up into the empty air, twisting on top of the sweat soaked sheets until a warm hand settles along the line of his brow.

“Hey, calm down,” it’s Barou and he’s wearing a concerned expression, much to Nagi’s surprise. He lays himself beside Nagi and blows out a deep breath, covering his reddened face with palms. “Sorry if I was rough.”

On the other side of Nagi, he hears you sigh loudly, applying a chaste kiss to his cheeks before also settling down. “Did you like that, Sei?”

“Yeah,” he hums, and instinctively lays his head on your shoulder. “Felt really good, thanks…”

Then, you say, without missing a beat, “Wished you two would just admit your feelings for each other.”

Barou’s cheeks flush and he tries to turn away to hide it, forgetting for a moment that Nagi is right there and gets a faceful of his surprised eyes. Instead of getting up, Barou glowers up at the ceiling. “There’s nothing to admit, he’s just a fuck buddy to us.”

“Sure thing,” you snort back and add another kiss to Nagi’s cheek, almost to sooth out the forming pang in his chest from hearing his words. “Maybe meeting earlier would’ve been neat? Imagine you guys becoming friends in middle school or something!”

Barou doesn’t know how to respond to that, and it’s you who ends up laughing, light and airy. Nagi stays silent and just grips around your waist, burrowing himself into your chest, inhaling your scent and lightly sucking at the area.

“We should probably take another bath,” Barou says lowly.

“Can we wait till later? I’m pretty tired and fucked out.” Nagi finally speaks but his voice is weak.

Barou looks like he was about to object to that but you quickly flash him a look and he shuts his mouth, only nodding and then pulling the blankets over the three of you. Nagi feels Barou massaging his back for a bit before eventually draping his arms over his waist. Nagi’s head stays cushioned on you while your fingers play with his hair.

Everything about this feels nice and domestic, it makes Nagi wish he could be with you two permanently instead of thinking about the ‘what if’s’.

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