Titolo: He's been waiting for you
Fandom: Free!
Personaggi: Rei/Nagisa
Genere: erotico, fluff
Avvertimenti: omegaverse, pwp, in inglese
Parole: 3340
Note: per la s2 del COW-T, M2 con "armonia".

The nest is awfully quiet, today. Not that usually it’s a chaotic place, but everything about the space surrounding him speaks of silence and static. It’s too quiet. The air does not vibrate, his breath comes out in occasional little puffs, in a frustrated attempt to create noise and fill whatever is lacking. Of course, though, it’s not hard to know what exactly is missing. He boils in his depths: impossibly hot, demanding. It forces his body to clench and move without rest as his teeth trap his bottom lip in a frustrated hold, maybe searching for a little bit of pain, a little bit of anything to worry about— aside from the need for that person to unlock the valve which traps all of his heat pressing from within him in every direction like air in a balloon that inflated too much.

And Rei-chan is late. He must be late, even though time is not passing: every second is filled up with a pause, a long breath, and Nagisa’s hand grasps on his own tee, tight, until a particularly violent wave of heat burns and melts into liquid with a loud moan that he does not realize he is the source of until he lets another one out and the sound moves the air around him almost sensibly. Or maybe it’s because he is shivering, and his knees seem to turn into goo for a second, forcing him to grasp on the stove in order to stand.

“Rei-chan,” he breathes heavily, as his body seems to turn slick and sometimes it feels disgusting, but now it’s hot and alive now that it’s aware of its own needs. Like an animal needing to feed, Nagisa observes his surroundings, and wobbles to the bedroom so that he can look at himself in the mirror.

His cheeks are soft pink, his breath fast and hard, and his clothes definitely too hot, too tight, too dry. Sweat is already covering his neck and forehead, like he just came home from a run.

He undresses, in silence, expecting as usual to see part of his upper body turn entirely red but that is only on his face and a bit on his neck today. It makes sense: his head seems to be on the verge of bursting into fire.

And it’s so chaotic in there, he barely thinks about it before letting his cheeky spark take over for a moment and wearing a pair of really skimpy shorts, barely long enough to cover his ass, and tight enough to show every centimeter of it. His naked feet touch the floor gifting him with a fresh chill that runs up his spine, clashes with the heat— the unbearable intensity of a star burning in his small, compact core.

“Rei-chan,” he calls to fill the emptiness in their house. Sure, there are many things in it, but only one essential thing is missing. “Rei-chan,” he breathes out, to control the scorching hot concentric waves that drive him to the door, leaning against it.

“Rei-chan…” he whines, with a hard shiver and his eyes now wet, as if he was staring at a fire very closely before he shuts his eyes.

Rei does not hear it, but he feels it. His jaws clench for no apparent reason as he stands in the train which suddenly moves too slow, and time seems to envelop only him as he fidgets, now, his eyes darting around for a sign that he is close to home.

A man next to him looks at Rei with something nervous or anxious flickering in his eyes, and Rei glares back at him like the poor unknown guy was to blame for his sudden arousal. A small grunt rises from his throat but stays trapped behind his teeth, while his cheeks turn a violent red and his mind fills up with only one thought, his body itching for only one thing.

The man next to him seems to get dwarfed, as he fights the urge to step closer: Rei can see it in the way the other’s stance goes rigid and his hand clenches around the handle on top of them.

Rei closes his eyes, almost thankful that stranger is not Nagisa. If he was, so many issues would arise. It would be so much more difficult to muffle the roar in his blood, as their bodies swing softly side by side…

When finally the train drops him off at the right stop, his feet move almost on their own, getting him flying hotter and hotter towards home.

And when his trembling hands finally shove the key in the door’s lock and the sound of it turning bangs behind and before it, they push it open and Nagisa is there. Their eyes lock in confusion— in shock, almost— before Nagisa’s hands wrap around him out of nowhere and his lips reach Rei’s like a thirsting nomad in the desert’s do as soon as water is in sight.

“Rei-chan,” Nagisa mutters before their mouths meet already open, and their waists stick together with a hard mutual thrust that leaves them both stilling for a moment before Rei begins walking against Nagisa, like he meant to tear a wall down. Nagisa fumbles to follow, in confusion, with a comfortable fuzz and nothing filling his head up in lieu of the needs he’d been worrying about, the anxiety about exploding and dying with need.

“Nagisa, what’s this,” Rei mumbles, as his mouth parts from Nagisa’s and his hands cup Nagisa’s ass without worrying about grace or softness. Only need to spread his omega’s legs and eat him up whole the way he does when the rut synchronizes with the heat from his lover— the one he chose to bond with.

“Shorts,” Nagisa replies softly, and somehow a smile curves his plump lips with a flash of his usual cheekiness. “You like them?”

“Nagisa—“ Rei growls, now stopping and curving down on the other to bite and lick at his neck while his waist rolls hard and fast into Nagisa’s until the two quiver together among hot, heavy, wet fast messy breaths and a heat that spreads around them, finally making the air buzz and tense all around them with electricity.

Now their nest is not so quiet anymore, and Nagisa sighs with a relieved smile as his fingers tangle through Rei’s dark, tidy hair to ruffle them up.

This is so not like Rei. Any other moment, he would be smiling quiet and loving with a little kiss on Nagisa’s hair while bringing his tired body inside.

However, his hands feel needy now as they slither under Nagisa’s tight shorts and his cute, innocent pink tee to taste warm shivers on his skin and press his fingers on it until it pales.

“Rei-chan, I was missing you so much-“ Nagisa whispers, before his voice breaks at one of the rolls of Rei’s waist humping him somewhere in the flat he doesn’t care enough for to look around and locate. As long as they get to the bedroom, somehow.

Rei’s breath stutters before his hands leave Nagisa’s skin and they push him backwards making the other almost stumble, but their feet shuffle together in a weirdly perfect dance where Rei leads and Nagisa trots then halts among sticky kisses until he finds himself dropping backwards with a smirk. And his back hits the bed and Rei follows him immediately as if they were tied together; their breaths mingle again with wet kisses, tongues sliding together in wet and slick movements, drool dripping from the corner of Nagisa’s mouth in the end while his hips raise and lower as they follow the pace Rei set for them. He has nothing to say now as the heat he attempted to push backwards through finally boils up and overflows in little bursting moans, as if it was soda bubbling in his veins. And while Nagisa’s hips were relatively free to move, his motions are slowly nullified by Rei’s bigger body pressing gradually down on him, and his hands struggle trapped by Rei’s hands which keep Nagisa’s pinned securely over his head.

“Ah- Rei-chan—“ Nagisa whimpers, the moment Rei’s hips begin snapping fast and hard between his legs, grinding, rubbing, with friction only feeding itself further and the heat swelling where Rei is thrusting and humping with his voice ghosting then penetrating Nagisa’s ear in hard breaths filled with pure need.

“Nagisa, Nagisa- Nagisa—“ Rei grunts before biting into Nagisa’s neck until the smaller man begins struggling under him again, but Rei holds him down while growling and rubbing harder against him until Nagisa whines and gives up, his body melting in a weird sort of calm and his muscles relaxing like a prey surrendering.

“Rei-chan… Rei-ch-chan,” he whispers, with glossy hypnotizing eyes darkening and capturing Rei’s gaze, a slow smile cutting between his lips while his thighs part relaxing at Rei’s sides, open to invite him.

Rei’s jaws twitch, before his mouth attacks Nagisa’s again, and his hands tremble at following the line of Nagisa’s sweet, perfect hips before they tangle on the band of those tight shorts. He huffs with a half-groan before forcing himself to abandon Nagisa’s lips to pull that pair of cheeky denim shorts down, and throw them away with an indignant grimace. He lowers again, licking at Nagisa’s hipbone (there’s a shiver there he’s running after).

Nagisa’s breath halts when too many sounds press up his throat all at once, and there is none able to vocalize the feeling of warm and slick pleasure aroused by the tingling path left after Rei’s tongue.

“Rei-chan,” Nagisa calls again, hard and trembling, sharp and tense, looking down at Rei between his legs. Rei’s mouth, Rei’s eyes flick up at him before he licks his own lips.

“Nagisa-kun, roll over.”

Nagisa’s breath comes out shaking, before he stutters something but says nothing with meaning and then simply lifts his hips then flops on the other side, and now his ass is bare, pushed back by his hips which do not seem to stop. His fingers immediately grasp on the pillow right by him, in preparation.

Rei does not wait to grasp on a cheek of Nagisa’s beautiful ass each, his tongue flicking out to wet his own lips for a moment, before his hands part to reveal the hole - now squeezing around nothing in anticipation and pushing slick out already. Until Rei dives into it with his tongue, gives quick little laps and grunts in satisfaction at Nagisa’s choked out small whimpers and chirps and his hips attempting to move, his fingers clenching around the pillow until his hands ache. “A-ah… Rei-cha— Rei-cha-an~”

Rei hums, growls, pants while licking Nagisa’s hole over and over again, encouraged by the taste of thick, acid warm liquid while Nagisa’s hips tense and raise, as if he was trying to escape, but he gives out a brief, hard moan before his body collapses on the mattress again, and Rei resumes licking in between soft chirps coming from the pillow where Nagisa burrowed his face.

Rei’s glasses are completely fogged up, and he takes a break to take them off before finally grabbing Nagisa’s hips and lifting them up with a dry command: “get ready.”

Nagisa huffs, stuck between letting his mind swim in the haze a little bit more and lying there lazily— or obey and raise his ass. Until he eventually does the latter, his knees supporting his lower half while his chest and face remain pressed against the mattress. At his most vulnerable, Nagisa smiles with a glance behind him, where Rei stares at him while undoing his belt before getting rid of his clothes and pressing, hard, against Nagisa’s thigh.

“Are you alright, Nagisa-kun?” His voice sounds like he is the usual again, for a moment: the same man Nagisa moved in with as they entered university, the same man who did so without realizing that, for starters, Nagisa was a omega. And then, that he was in love with him.

“I’m fine,” Nagisa hums, reaching back blindly with a hand as his own eyelids fall close, his mind grasping at the last fading buzzes of pleasure, and Rei grabs it while pulling himself closer, and digs with a finger inside of Nagisa’s warm, incredibly wet opening, but does not waste time teasing: he goes straight for the place where Nagisa will completely melt and surrender, open up to him, for the moment where Nagisa will cry and beg, and sing in dissonant little yelps.

And Nagisa complies. His voice bursts out, trembles, crackles in weakness, and then finally flows out freely while his hips move wild. But Rei follows, fingering against the same spot over and over again until Nagisa whimpers, desperate, and his voice shakes when he begs, “a-ah, please, please Rei-chan, please, please please… I need you Rei-chan, please I-I—”

Rei bites down hard on his own lip, his whole body screaming at him to just make Nagisa his, but that display is so obscene, yet such a sweet image, Nagisa’s voice is such a cute, beautiful sound. Beautiful. He rolls that word in his mouth silently, whilst his fingers keep moving, unrelenting, inside of Nagisa’s melted, surrendering body.

But the heat pulsates violently through both of them, leaving Nagisa in a sweaty, loud mess, and Rei breathless as he shivers before shaking harder. He pulls his fingers out, then finally — finally, finally… finally — he slides in. And the movement is easy, Nagisa’s body wraps around him tight and clenches like it was trying to swallow him, with soft little chirps of relief as he keeps calling Rei-chan, Rei-chan, with a small, weak, begging voice. And when Rei is completely sheathed inside, he lets out a long, hot, heavy breath he did not even know he was holding back, and a fresh shiver runs up his spine giving him relief from the intense heat pooling up… everywhere.

“Nagisa— Nagisa, you feel so good, you’re so— so beautiful, I love you…” he admits through sharp, quick breaths while thrusting now, bending over Nagisa’s body to make his voice slither inside the omega’s ear as he shivers at the delightful way Nagisa’s insides squelch and tighten around him. With each thrust, both breathe softly, hard, mirroring each other in balanced hums, moans, ecstatic shivers.

And then those sounds of Nagisa’s turn into a tense, sharp inhale, while something inside begins swelling. Incredibly fast. Painful. It stretches him out, and his eyes fly open anyway, his breath stops for a moment while all of his body begins tensing up, pain crawls up his spine the way he always dreads. His arms stretch out, his body moves instinctively to escape.

Rei foresaw it, though. He follows all of Nagisa’s movements, and runs after him crawling right away. “It’s okay. Nagisa, it’s okay,” he whispers in his ear, soothing.

Nagisa holds onto the headboard now, straight up on his knees and against it, with tears of pain at the corners of his eyes, while Rei hugs his waist quietly and kisses his shoulder, knowing full well that the knot at the base of his cock is swelling up, trapping them together until he’ll come, and then until it will go back down. They did it dozens of times before, and this always happens.

Somehow, weirdly enough, Nagisa never seems to think about it or remember it. He thinks about the teasing, the dance, the rite and the ride, being pushed to the bed, undressing for Rei, being held by him, loving him with all of those mutations and seemingly out-of-character expressions from somewhere within, when his rut comes.

But every time the knot swells, it’s like he never expected it, or cannot remember it is going to happen. Maybe it’s just the way things are supposed to be, and Rei’s role is to comfort his omega and to reassure him, keep him quiet and calm as his hips move slow, careful, until sperm begins flowing inside of Nagisa’s warm, tight body. Maybe it’s just that Nagisa simply does not think that much when he is in heat, and that Rei can understand: after all, the same can be said about him.

“A-ah, Rei-chan…” the other whines, with the clear sensation of being filled up to the brim, until his stomach also swells a little, and his body trembles fragile, but with warmth levitating within him again to the point his head feels like it is floating.

“Nagisa, are you alright?” Rei asks, gradually abandoning the dominating attitude to convert back into his usual gentle and protective self. The usual Rei-chan, who always keeps an eye on his lover to keep him from any harm. And now he’s the source of a pain none of them can help…

Nagisa’s eyes flutter open and closed, three or four times before they settle half-closed, and his lips tug in a little dazed smirk. His eyes flick over his shoulder, and his hands leave the wooden headboard to tangle with Rei’s fingers which promptly soften and welcome Nagisa’s. His lips touch the smaller shoulder under his chin in warm soothing kisses, they draw circles on it while little moans leave Nagisa’s. His knot slowly softens and dwindles back, Nagisa’s hums and soft moans slide back into heavy breaths and sighs, until his throat bubbles again with little giggles and his body leans frail against Rei’s chest.

Rei’s arms promptly wrap around the lithe body, cradle it until they both lie on the mattress, and he finally smiles in relief, once Nagisa’s expression becomes pleased and amused. His skin glistens from the sweat covering it, his wet hair smell of sweat and sex, his cheeks look deliciously shaded in red, so lovely Rei’s main instinct is kissing one before slowly starting to pull out.

“Rei-chan,” Nagisa breathes soft, with a small whine at the emptiness when Rei slides away, and his eyebrows arch desperate, sad, needy as he looks back. It always feels so lonely whenever Rei stops being inside of him. It always feels like he is going to leave, and more than pain Nagisa always dreaded loneliness. But the other’s arm wraps promptly around him, and his lips drop small reminders on Nagisa’s skin that they belong together now. That he’s claimed. That there is nowhere Rei could go now that his soul and body are linked to Nagisa’s.

“You said you love me,” Nagisa finally whispers with a smile, after their breaths stopped rolling out fast and are now reduced to soft panting.

“Yeah… I told you before,” Rei replies low, with his eyebrows knitting. “I mean, it shouldn’t be news, right?”

It’s concerning. Was it wrong to say? Was it the wrong moment?

Nagisa smiles brighter, searching for the other’s hand behind him, now that they lie there quiet and wrapped up warm into one another’s embrace.

“Yes, but it’s nice to be reminded,” Nagisa says, closing his eyes. “I love you too…”

Now that is news. Rei’s lashes flutter wildly, as he looks down at Nagisa like he turned into someone else. For being someone who is always so incredibly honest about his feelings, he never spoke those words to Rei. Never let him know. His eyes slowly open once more, and his smile stretches sweet, while his body curls up in a chuckle and his cheeks turn pink again.

“That felt good to say,” he admits, and Rei can do nothing but finally grab his hands until their fingers intertwine tight.

“Are you mine?” Rei asks, with a smile of his own that lights up his expression.

Nagisa’s smirk cuts through the air, before his lips smash against Rei’s, and the room fill up with his cheeky laughter while the alpha tickles his side and insists, “are you mine? Are you mine?”

Nagisa does not say, but when they wake up the next morning, their hands are still linked tight, their bodies fitting together perfectly like notes in harmony.