Archive of Our Own

The heat of the suns never gets easier, Nai thinks as he wipes beads of sweat off the back of his neck. When his hand comes away though, it’s dry, and the feeling doesn’t dissipate. It just gets worse; itchy pin pricks scatter across his shoulders and upper back in rapid fire. He rolls his head on his shoulders as if trying to itch his way out of it. If it’s not sweat, it’s just his nerves misfiring. Somehow, that’s worse.

Beside him, Vash trudges along, oblivious. If he’s noticed anything off he’s been politely quiet about it. Nai is thankful to the extreme that his brother chose to shut up for once.

A pulsing throb distracts him from his discomfort, undulating through him like a shiver. Uncomfortable, gooey warmth pools in his crotch, and he cringes as he quietly adjusts himself, praying that it’s just nerves and not something embarrassing.

Ever since one of the twin suns started to lag behind its sibling, Nai’s body started acting strange. It was a new phenomenon. For the past thirty years that they’ve traipsed through this desolate wasteland, they hadn’t seen any indication of seasons or solstices.

Must be a different orbital pattern, slower than what the books told us to expect.

Vash diligently kept track, counting down the hours between dawn and dusk, between one sun at its peak and then another. By the end of the week they concluded that while the days seemed to be the same length, the light was less intense, less blistering. Hazy, Vash described it, as if the day never really reached its zenith.

In the present, Nai stops abruptly, panting. Their shadows are squat, misshapen things. When he makes a fist, his fingers crack, swollen at the joints. For the first time ever, he thinks he needs a break.

“Nai?” Vash says, shoulders bumping. Nai shivers. “Are you alright? ”

He’s not sure he can answer. At that moment, the world slowly tilts and starts to spin, a shock of nausea welling up inside of him. But when it passes, he’s perfectly still.

“We’ve been wandering too long without a break,” he says as he takes a tentative step forward. “You never know when to stop. If it wasn’t for me, you’d just keep going until you collapsed.”

“Oh…” Vash pouts. It’s aggravating and endearing at the same time.

Vash points into the distance, a speck on the horizon. “Look, I think there’s something there. Can you make it?”

Did he have a choice?

“The better question is, can you?”

Vash groans and pushes past him, mumbling something about how Nai doesn’t have to be like that and he’s always picking on him.

They walk the rest of the way in silence. As the black speck grows larger, it morphs into something familiar – a piece of ship debris crests over a weather-worn shack. It’s a glimmer of hope, and it eases some of the pain in Nai’s ankles and fills his hollow stomach.

Vash sighs. “I hope nobody is inside.”

“Does it matter?” Nai says, his spirits renewed. Being so close to the finish line has him energized. “We’ll just exterminate them, like every other roach we come across.”

“They’re just looking for cover like the rest of us.”

The details become finer – the windows are empty, the glass long gone. A crumbling porch is held up with petrified toothpicks as a tattered sheet hangs in the door frame. If anyone’s in there, they’re either very sneaky or already dead.

Their footsteps are muffled as they approach. Even the crunching sand is muted by the immense vastness of the empty desert. They pass by a rusted pump, the lever broken off long ago. Distantly, Nai remembers that Vash needs water to live, but he’s too close to “home” to care.

Nai tentatively ascends the three short steps. The wood creaks, unfamiliar with any weight, but seems sturdy and firm. He pushes the blanket out of the way, the door frame splintering into his palms.

“It’s empty,” Nai says matter-of-factly.

Vash scoffs. “Don’t sound so disappointed.”

Nai walks inside with his head held high. There’s nowhere for anyone to hide, just one room and a rusted bucket in the corner. When he peeks out back, there’s not even an outhouse.

With a sigh of relief, he relaxes a tiny bit. They don’t have to be here for long, just enough for him to recover and get back on his feet. Nothing more than a day, he supposes.

“You should be thankful,” he says, dropping his bag and untying his bedroll. Vash mirrors him quietly, unraveling his own bedroll until they’re both flat. There’s just enough space that they can lie together side-by-side.

Nai’s whole body collapses backwards when he sits down. Palpable relief seeps through, his tendons and joints relaxing without the weight of his body pressing down on them. He doesn’t even realize that he’s moaning about it until Vash sits down next to him, his palm pushing Nai’s hair off his forehead. His pitying smile and knit brows tell all – Nai is acting strange enough that Vash is beyond being concerned and is fully invested and curious. There’s no way he’s going to leave Nai alone now.

“You sure you’re alright?”

“I’m just sore.”

“You’re never sore.”

“How do you know?”

Vash doesn’t argue, just goes on smoothing Nai’s hair back like he’s a sick child. His skin is so sensitive that he can feel every single hair move on his head, and he can only tolerate it for a little bit before he’s brushing Vash off. And the tingling sensation starts again, like water down his back.

“Nai,” Vash says sternly. “You’re shivering.”

Was he? A tremble wracks his body, his teeth chattering, but oh, God, is he hot. So hot. He pulls his shirt off over his head, throwing it behind him as he swallows hard. For the first time in a long time, he’s scared.

“The lights –” He starts, then stops. Something icy runs through his veins, and now he knows he’s breaking out into a sweat, but he can’t hide it anymore. “It started – When the suns changed –”

He crumples sideways, Vash catching him, and oh, it feels so good; It feels so bad. Electricity sparks between them, his skin swollen and raw. He has no control of himself when he throws his arms around Vash’s neck, burying his head in his chest. Now that they’re touching, Nai is too afraid to let go.

“It’s alright,” Vash says, squeezing Nai closer. “I’m gonna keep you safe, don’t worry.”

Tangled up in Vash’s arms, Nai slips in and out of consciousness. The ache in his body permeates into his bones, all while his skin is so tight that it stings. At best, he grits his teeth, moaning through the uncontrollable trembling. He knows he makes a pathetic picture, helpless and weak, but his will is overpowered by whatever’s ailing him. So, he settles and succumbs. Nobody else has to see it except Vash.

It’s not until the suns set that he’s finally stable enough to sit up on his own. Under the yellow glow of their camping lamp, dark shadows etch themselves on Vash’s weary face.

Taking a shuddering breath, Nai steadies himself. He’s still a little woozy as he rolls his head on his neck, trying to work out the kinks. While the trembling subsided, a deep fatigue took its place.

“There you are,” Vash says with a soft smile. He cradles Nai’s head in the palm of his hands, their foreheads touching. It’s reminiscent of a different time, when they were 30 years younger and floating like dust in the wind. Now, Vash waits, as if wanting permission. “I was really worried about you. Let's hope it’s not contagious,” he laughs.

Gruffly, Nai replies. “Just do it.”

Immediately, he senses the connection. It starts out as nothing more than a few tendrils of silk caressing his brain, multiplying exponentially until he’s cocooned in Vash’s presence. His heart rate slows, his breaths steady. Everything settles until they’re perfectly in tune, and then the noise starts – errant thoughts that nobody but Nai and Vash can hear. It’s been so long that it’s overwhelming, rattling Nai’s brain until he feels the beginnings of a headache.

And then Vash is gone, faster than he entered. The silence left behind is deafening and he reels, rubbing the spot on his head where they touched.

“I can definitely sense some changes in you.” Vash pouts as he stares at Nai. “There’s something off about you, hormonally, but I don’t know what it means. I’ve never seen it in you before.”

“So you’ve seen it in others?”

“Umm…” Vash ponders. “Some of our sisters, maybe, but nothing this severe. It’s really strong.”

So whatever is happening to him isn’t abnormal, it’s just more intense. Perhaps because of his independent status? Regardless, the knowledge is at least helpful. If there was something infectious going on, Vash would definitely be able to sense that. At least this won’t kill him and Vash.

But if it’s hormonal – biologic – then there’s nothing either of them can do. It will just have to run its course, which means staying here for an indefinite amount of time. It’s not appealing to Nai in the least, but he doubts he can get very far in the condition he’s in.

The next few days are repetitions of each other. Nai spends all day shivering and delusional. At its peak, he’s nothing more than a sprawled out mess, murmuring nonsense as Vash does his best to comfort him. Reprieve only comes with the darkness, but then he can barely stay awake long enough to appreciate it.

By the end of the week, things start to change drastically. Fortunately, the stupor wears off, replaced by hypersensitivity. Everything hurts. His skin, his eyes, his fingernails. And the noises – his hearing was already excellent, but he swore he could hear every grain of sand rub against each other. His stomach roiled against the onslaught, gritting his teeth and as he swallowed. The only thing worse than the pain, Nai decided, was the unpredictable nausea.

Then his stomach swells. Vash is the one who points it out. It’s not huge, but it’s a soft mound. Vash’s hands are like sandpaper when he lovingly cups it, looking a little forlorn when Nai swats him away.

Even small, his belly alters his center of gravity. He has to lean back a bit to counter it, lest he stumble, and it’s embarrassing. He’s always been fast and light. Prided himself on his quickness. Now he couldn’t even sit down without groaning, the swell dropping between his legs while squishing everything inside of him.

Vash, though – Vash watches him from a comfortable distance, his gaze hard. It’s discomforting to see him so intensely focused on Nai’s body. With nowhere for him to hide and too weak to argue, he just does his best to pretend like it’s not happening. If Vash wants to watch, let him. For all he knows, it’ll happen to him, too, one day.

Nai doesn’t start to feel somewhat normal until the end of the second week. They both sigh with relief when Nai’s hypersensitivity passes. Now that his skin doesn’t feel like it’s ready to peel off, he can’t help how bad he needs Vash. Every moment is spent trying to keep up physical contact, whether it’s a foot against Vash’s leg, or his entire weight against him.

“What’s gotten into you?” Vash laughs as Nai wraps his arms around Vash’s chest before burying his face in his armpit.

“Mmrghh,” Nai answers.

Silently, Vash combs his fingers through Nai’s hair. Tingles of pleasure throb through Nai’s body, and he unabashedly huffs in the smell of his brother. When Vash talks again, the vibrations of his voice travel deep into his bones.

“I think I like you like this,” Vash says in a sing-song voice. “You haven’t been this cuddly since we were kids. I missed it.” And then softer, sadly, he adds, “I don’t know why you changed.”

Nai bites his lower lip. He likes having Vash to himself. That’s been his plan all along. There wasn’t any change in his heart regarding his brother. It’s Vash who is the difficult one.

They drift off together, Vash chattering about this and that while Nai soaks in his mirthful energy. Buried in the dark crevice of his brother’s body, he can’t tell how much time has passed. It’s only when he starts having some cramping in his lower back that he sits up.

Nai groans, stretching. It’s probably just from lying down for two weeks, he muses. Vash tilts his head in a question. What’s wrong now?

“My back hurts.”

“Let me help.” Vash positions Nai on all fours, rucking up his shirt to expose his lower back. His fingers trace down the divot of his spine until his thumbs rest at his hips. When he presses down, Nai bites back a groan. “Got the right spot?” Vash laughs and presses down harder.

Nai rocks into it, the intensity ramping up. There’s only a moment of relief before the pain rebounds, and then it slows to a stop. Breathless, he collapses back so he’s kneeling, focusing on Vash’s hands around his waist.

One minute passes, then two. Right when he thinks it’s over with, the pain starts up again, gripping his abdomen like a vice. He rocks forward, whimpering as it knocks the breath out of him. “More?” He pleads, and Vash complies.

Bright, crushing pain rips through Nai’s belly as he sobs so hard he gags, swallowing back bile as his cries taper off into a moan.

“Nai,” Vash says, voice tremulous. “I’m here. I know it hurts. I’m not leaving.”

The feeling amps up before it plateaus, redefining the concept of pain. His belly might as well be burning from the inside out, all while his pelvic floor tries to separate tendon by tendon. The only way he can get comfortable is burying his face in Vash’s chest and sinking down to a wide, deep squat.

“Ughhh” is all Nai can respond with as a hand reaches between his legs, cupping his crotch. Nai wasn’t entirely unconvinced that his insides weren’t trying to force their way out beneath him. Even stranger was how his pussy throbbed with heat in the brief moments between contractions, not like with pain, but like… He swallows as he feels the sticky mess between his thighs, thankful that his shorts are loose. Like he’s aroused.

As the pain tapers off, he melts. Vash’s hand on his back is soothing and sweet, and he can’t help but groan a bit as the warmth spreads from his groin upwards. Slowly, he slips down Vash’s body until he’s face down, ass up. The worst part is he doesn’t even care that he looks like a bitch in heat.

Vash’s laughter is far away, but he’s close enough when he says, “You want more back rubs?”

Nai shakes his head. If Vash touches his back, he’s sure he’ll shatter. But his thighs – they’re awfully tense.

Asking for something from Vash will never not feel humiliating, but he does it anyway. “My legs hurt. Please?”

There’s a pause, and Nai knows Vash is smiling. When he feels his hands slide up the back of his thighs, warm and firm, he does his best to bite back more suggestive noises. Vash’s fingers splay, slipping under the hem of Nai’s shorts before they knead at the tense, meaty flesh and –

The pain slowly encroaches, lapping against him. It feels so good to have Vash touching him, so close to his pulsing cunt, that he’s growling with rage and frustration as his belly crushes inwards, consuming him.

“No, no no –” Nai growls, knees trembling. Vash works harder, doing his best to counter it, but it’s useless. Nai’s world whites out, his teeth cracking as his jaw clenches. His crotch burns like a brand new bruise, and when he arches his back even further he can barely register Vash’s hands moving to his cunt.

“You’re soaking wet,” Vash says with worry, pulling Nai’s shorts over his ass to let them pool at his knees. Fat globs of hot slick drool from Nai’s swollen, puffy cunt as Vash tentatively pets his groin. The pink skin is angry and red, almost purpled, his labia fat and full with blood. Between them, his normally neatly tucked inner folds push out, shiny with slick. His typically prominent clit now hides between the flesh, only the tip peeking out. “You’re… You’re so…”

Nai pants as the pain tapers, coming to awareness. He’s about to retort, or at least cover himself back up, until Vash cuts him off with a gentle swipe of his fingers between his thick pussy lips.

Nai moans, not in pain, but in pleasure. It’s so lewd that Vash stammers out an apology, but he’s not sorry enough to stop what he’s doing. “I’m going to check down here, so get ready.”

Nai drops his belly as he sighs, his spine cracking. It feels oddly good to be in this position, the room air soothing on his sore parts. With a frustrated sigh, he says into the floor, “Just get on with it before the pain starts again.”

There’s a loud click as Vash swallows hard. His thumbs pull Nai open, and even that light pressure has pleasure zipping up his spine. There’s a familiar emptiness that starts to seep him through him, like when he’s craving to be stuffed full but he can’t find anything to fuck himself with.

You have got to be kidding me. There’s no way I’m getting aroused.

Between his legs, Vash gently traces the scalloped edges of his inner labia, following them to his cock. The featherlight touches have Nai squirming, and when Vash pushes the bunched skin back to look at the crown of his clit, he can’t hold back, moaning deep in his chest.

Vash’s fingers take a loop back down, retracing their steps. They bypass his hole to rub softly over his ass, and Nai thinks that’s what’s going to do him in – that his brother touched his asshole and now he’s having an orgasm while he’s possibly dying, but before that can happen Vash is back between his cunt.

“You’re more sensitive than normal,” Vash says matter-of-factly, as if Nai’s entire nervous system isn’t being pushed to its limits. “Does it hurt?”

Nai buries his head in his crossed arms in shame, mumbling, “No. Not right now.”

Vash hums as he keeps exploring. Nai’s not sure what else there is to see down there until he’s greeted with Vash’s two digits circling his hole.

Fuck. That does it. His back arches even further as his hips rise instinctively, like he’s presenting himself. His sense of self-preservation screams inside of him, and he bites down onto his forearm as he fights with himself. He needs to be stuffed, to be consumed. To have that uncomfortable emptiness filled until he’s shouting and crying –

“Oh, fuck –” Nai chokes on a sob as Vash plunges a single digit inside of him. It sets off a cascade of sensations; first, he’s overcome by a blinding orgasm, just endless waves of pleasure that relentlessly beat against him. Then, the pain starts again, deeper in his pelvis, and he thinks he’s going to piss himself but he’s completely lost control.

There’s a drop inside of him as something shifts, a searing pain in his cunt as it fights with the last vestiges of his orgasm. Muscles he didn’t even know he had work against him, pushing down and out until –

Vash gasps. “There’s something coming!”

Nai tucks his head between his shoulders, unable to hold back from the instinctive need to push. Whatever’s inside of him bullies its way past his cervix, stretching his canal beyond its limits. His teeth chatter as cold sweat drips off his forehead, blood rushing between his ears.

Between his legs, Vash’s is pulling him open, repositioning him to make room. His cunt stretches and stretches until it's like he’s being branded with a hot iron right across his most sensitive parts.

There’s screaming, whimpering. Someone choking on a breath before gagging. It’s him, it’s him. Oh god does it hurt, it hurts –

“It’s alright,” Vash shouts over the noise. “It’s alright, hold on. I think you’re just… You’re just…” He doesn’t have to say it for the both of them to know. The change in light must have sent Nai into heat. They’ve only seen it induced in plants, never on independents.

The thought that it’s happening to him enrages him only long enough until the urge to push overcomes it.

“Wait, wait, hold on,” Vash says, palm encompassing Nai’s pussy as if to hold the egg in place. “It’s the first one, you’re not ready yet.”

Nai’s body screams out. “I can’t!”

“It’s bigger than the ones the dependents lay! Just hold on a second!”

Nai growls, but obeys. Slowly, the urge dissipates, leaving the raw, burning pain behind. His whole body is one giant shiver, too weak to hold himself up. He’s even too weak to argue when Vash lies him down on his back.

“You were gonna fall there,” Vash says softly as he cushions Nai’s head with a blanket. Obediently, he gets between Nai’s legs, twisting him so he’s on his side and holding one leg up and towards his chest. “We don’t have a lot of other options, why don’t we try this position?”

In the moment of stillness, Nai gets his first good look at Vash. He’s flushed from head to chest, his pupils blown wide but his mouth a firm line. His spine is uncomfortably straight, enough that it makes his hunched shoulders look uncomfortable. There’s fear and something else Nai can’t place written across his expression, but Nai doesn’t have any more time to ponder it before another contraction overtakes him and he groans.

“Push against me now, you got it,” Vash says, encouraging.

On his side, his pushes are more forceful. He’s less fatigued, and something just feels right about it, like his pelvis has more room in it.

“There we go, almost past the widest part I think.”

Harder, harder. His world goes black, his breath sucked out of him. The drive to get this stupid thing out of him is stronger than any of the pain he feels. And even with a smooth shell, Nai can feel every inch of it as it slowly works its way down.

“You’re doing great. Really brave, my love.”

He hates how Vash is talking to him. He doesn’t need his brother’s pity or encouragement, he doesn’t, he swears as he focuses all his rage into his next push.

With a silent scream, the egg tumbles out of him with a gush of fluids. The relief is undefinable, the definition of the absence of pain, and he falls back, exhausted to tears as Vash picks up the egg so they can look at it together.

“There’s one,” Vash says as he holds it close. Its pale blue shell is thick and mottled with white, big enough that it fits in Vash’s entire hand.

“One?”

There’s a pause, and then Vash says, “You know that they – we don’t lay just one.”

He’s right. There’s always been at least a dozen, but none of them have been as big as this one. Hell, they were only a pair. Hopefully, independents had smaller clutches than dependent plants because he doesn’t think he can do this a dozen more times.

His worries dissolve when Vash smoothes back his damp hair, unbothered by Nai's shameless nudity. Despite the fatigue, there’s a lightness to him. He feels hearty enough that he swears he could run a few laps around the house, and then some more for good measure. Nai even laughs when Vash’s sweaty palms lay on his cheek, wiggling closer to rest his head on Vash’s lap. Only something firm pokes back.

“Sorry,” Vash blushes. “You know I can’t help it”

Nai doesn’t look him in the eye. He’s not unfamiliar with his brother’s erections, but now? “I can’t believe this is what does it for you.”

Vash scoffs. “It’s not this. It’s you. And you needing me like this, being so close to me. Then you take your pants off and put it in my face –”

“I’m giving birth.”

Vash mumbles something.

“What’s that?” Nai says, aggravated.

“I just never knew something that big could fit in there!”

Nai surges up, ready to pummel his brother for being so fucking weird, until another contraction hits, leaving him flat on his back and knocking the breath from him. Suddenly it doesn’t matter how creepy Vash is. He needs him here, now.

Vash crawls to his head when he cries out, pulling him up by his armpits so they’re stacked against each other. Automatically, Nai’s head rolls back to rest on Vash’s shoulders, and he can just barely feel the hard tip of Vash’s erection as it prods against his lower back.

“Maybe I’m supposed to feel this way about you,” Vash murmurs into his ear, sickly hot breath fanning against his neck. Nai doesn’t understand what Vash is saying; why would Vash feel this way about him? He was already reeling from the fact that Vash knew he was in heat. What else did Vash know that he didn’t?

Nai sniffles and whines as his stomach goes tight. When that same pressure in his tailbone starts up again, he scrambles pathetically until Vash scoops his legs up, holding them close to his chest.

Despite nobody else being in the room, shame eats away at him. His pussy is spread open and out, and not even Vash is in front of him to protect him.

“You know what to do this time, right?” Vash says with a kiss to his pulse as the pain reaches its peak.

Nai’s voice is a hoarse rasp as he pushes. It’s easier, almost too easy when several eggs drop into his birth canal at once. There’s less of a burn, but they’re not moving the same way. Even when he gives a few solid pushes, it seems like nothing budges.

“Vash,” Nai whines, tremulous.

Without asking, Vash plunges his fingers into Nai’s raw hole. They push past the clutch in his canal, prodding at his open cervix. Trapped, all Nai can do is scream and writhe against the discomfort until Vash is done.

“They’re almost there. You know what to do - give birth to our babies like a good mama, Nai.”

Our babies. The thought has Nai shivering. They hadn’t gone that far in a long time. It wasn’t possible for them to be Vash’s, but – he bears down, encouraged by the thought. He’s going to give Vash babies. Nobody else can do that, only Nai can.

The next egg bulges out and Vash laughs sweetly over Nai’s shoulder. “I see them! Wanna look?”

He doesn’t, but he can’t help but steal a peek. Even scrunched up like a pretzel, he can tell there’s still a swell to his stomach. His cunt, though, looks obscene, his clit poking up from the pressure as his lips spread out. The blue shell of the egg between them is stark and unmistakable. Quickly, he closes his eyes and looks away.

“Don’t be like that,” Vash says, voice rough. “It’s beautiful. God, you’re beautiful.”

Nai shivers as the urge to push comes back. He doesn’t wait for permission – he doesn’t need it, he doesn’t need Vash telling him what he’s going to do. His teeth crack from the pressure as he squeezes himself tight, bearing down until there's a pop –

“There’s another –” Vash peppers his face with kisses, feather light.

Some unnameable, hazy hormone floods Nai’s system, twisting in his belly. He arches his back, spreading his legs wider as he bites his lip. The eggs jostle in his cunt, massaging against his swollen walls. Vash’s teeth scrape over his pulse as Nai whines, effortlessly pushing out another egg.

The feeling amps up as he tosses his head back, moaning between gritted teeth as his hips undulate. Pain and pleasure fight inside of him.

“Ohhh, God, Nai,” Vash moans, too dirty for the situation. When his fingers frame Nai’s gaping pussy, he’s almost sure that he’s starting to feel another orgasm coming on. “God, you’re so full. I bet it feels so good to get them out right now.”

Pop, pop. “Two more little ones. You’re giving me so many babies, sweet thing. So many.”

Nai’s body trembles as he comes, his empty hole fluttering around nothing as fluid spills between his legs. Distantly, he can hear Vash talking him through it, can feel Vash as he gropes his chest, his stomach, but everything might as well be far away. The relief of having that clutch out was indescribable, almost as pleasurable as the orgasm itself, and he comes down from it panting and exhausted.

Just in time for his uterus to cramp up again.

“I can’t do this,” Nai says. He’s running on fumes, run ragged between the pain and the pleasure. “No more. I can’t.”

Vash kisses him, nuzzles against his face. “You have to.”

The pain grows exponentially. Nai gives an honest fight against it and loses.

“N-no, no more!”

The next egg descends without his permission, forcing itself through his cervix no matter how hard he tries to stop it.

He twists in Vash’s arms until his legs are free, squeezing them together. He knows it’s useless, but it’s the only thing he can think of trying. Intense pain overtakes him, like his pelvis is being split into two, but he thinks the egg has finally stopped. Until Vash is slipping out from behind and prying Nai’s legs open wide.

Like this, his face might as well be buried in Vash’s crotch, his erection pressed against his face. When Vash’s other hand threads through his hair holding him in place, he knows he’s trapped.

“You looked so scared right now,” Vash groans, rutting against Nai’s face. “There’s no need – I’m here. Just push, love.”

Even if Nai didn’t want to, the egg was coming anyways. With his legs wide open, he doesn’t have to push hard to get things moving.

Slowly, the egg descends. Nai’s pelvic floor screams, exhausted from the work. He doesn’t notice Vash’s hands moving until he feels searing flesh against his mouth.

Nai gasps, his eyes opening to slits. Vash’s hand is wrapped around the base of his cock, the tip red and wet, his foreskin pulled back with his arousal. In any other situation, Nai would have punished him for such indecency – Would have taken Vash down bit by bit until he was a writhing, pleading mess. And Nai would savor every moment of it – the taste, the smell, the soft gentle moans Vash gifts to him.

But he can’t think about it as the next wave of pain overtakes him. As he gasps, Vash shoves his cock between his lips, moaning as Nai gurgles around it.

Vash curses, thrusting deep. Distantly, Nai knows what he’s supposed to do, but there’s too much sensation going on. Instead, he drools around Vash’s cock, gasping and choking when he pushes a little too far.

All the while his body continues on. Without his help, his womb contracts and squeezes. His muscles scream, his crotch raw and abused. His entire sense of self loses it’s edges until he’s nothing more than a flaming supernova and a mouth to be fucked.

“You’re a mess down there,” Vash says with a groan.

Nai tries to say something back, but it’s garbled with a full mouth. He hikes his leg higher, focusing on Vash’s scent as it floods his nose. Weakly, he tries to suckle on his cock, only to find his jaw going lax when he pushes.

“Half way out, Nai. You know what to do.” Vash thrusts into Nai’s mouth for emphasis, noting how the egg moves ever so slightly when Nai heaves and chokes.

Exhausted, Nai gathers his strength, taking as best of a deep breath as he can take, then bearing down with all his might. He’s barely giving attention to Vash’s cock, but it doesn’t deter him, salty precum dripping down the back of Nai’s throat as Vash ruts into him.

With a great rush of cloudy fluid, the last egg slides out of him, quickly followed by another of the same size. All at once, his body goes lax, spent and exhausted as he falls flat on his back. He knows there’s no more left inside of him – he doesn’t have to look to check. There’s just an emptiness in him, like he’s nothing more than a flaccid husk.

Vash’s body follows him, fucking Nai’s face into the floor as he loses himself. Nonsense streams from his lips, ranging from praising Nai to emphasizing how turned on he is. And all Nai can do is lie back and take it, his body numb and dissociated from exhaustion and fear, and the great relief that’s come knowing this is all finally over.

Vash’s cock throbs and kicks between his lips, his pelvis bumping up against his nose. Just when Nai thinks he can’t take it anymore, Vash leans back, quickly stripping his cock as strand after strand of creamy white cum paints Nai’s cheeks and lips.

The silence that follows is deafening, save for their panting breaths. Vash’s half lidded gaze is so seductive, but Nai can’t process it right now. He just stares blankly at Vash, as if to ask, are you done?

With a sigh, Vash rolls till he’s sitting on his ass. “It’s just – the hormones make me want to do that.”

“The hormones,” Nai says flatly. “Right.”

“We don’t have to talk about it again,” Vash adds, crawling between Nai’s legs to collect the full clutch. It’s a slippery mess, and he shoves a blanket under Nai’s hips, hoping to soak up most of it. “I should at least check to make sure you’re alright down here.”

A part of Nai doesn’t even care if Vash sees his pussy up close and personal anymore. Not after this. Another part of him is ready to put his pants on and move on with his life. His pelvic floor feels like it’s been hit by a pipe bomb, and he wasn’t entirely sure his innards weren’t going to fall out of him if he sat up.

“Do you have to?”

Vash shrugs. “I guess I don’t have to, but wouldn’t you rather I do it than make it someone else’s problem?”

He’s right, unfortunately, and Nai spreads his legs open as Vash catches them, throwing them over his hips. This time, Nai watches him. Right away, Vash fits two fingers in easily, biting his lower lip as if reeling himself back.

“You’re so loose.”

Nai’s jaw clenches, but he doesn’t speak. Vash slips in two more fingers and wiggles them around for good measure.

The feeling has Nai jolting. It’s not unpleasant – on the contrary, it feels kind of good. Like his insides are being gently massaged back to normal. Slowly, Nai melts. Arousal pools in the empty spaces left inside of him until he’s throwing his arm over his face to hide his shame.

Vash laughs when his clit starts to chub up, thumbing at the fat little nub with joy. “Am I making you feel good? You deserve it.”

“Mmmph,” is all Nai says.

His fingers circle Nai’s cervix, rub up against his pubic bone. When he pulls them out, Nai gives him a bleary, confused glance.

The devious grin on Vash’s face says everything. With the next push, he’s slowly inserting his fist into Nai’s cunt, his hand easily swallowed by his body. And the worst part – Nai chokes in horror – it doesn’t even hurt. It doesn’t feel any different from when he normally puts things inside of him.

“Oh, Nai.. You’re so wrecked – my whole hand! I wish you would look at yourself,” Vash coos, but Nai can’t. He’ll fall apart at the seams if he does. Having Vash’s entire hand in him feels… it feels right.

Gently, Vash makes a fist before pushing inwards. It’s got barely any strength behind it, but it rocks Nai’s body nonetheless, sobbing at the fullness. At the same time, his thumb circles over Nai’s little cock before taking it between his two fingers and pinching.

“Vash,” Nai gasps with what little energy he has left. Pleasure melts between his bones, seeps into his blood. He’s too listless to resist it, choosing to surrender instead.

“I’m not stopping until you come.” Vash’s fist twists, pulls out just enough for Nai’s body to suck him back in. Nai murmurs and shakes his head, but Vash relents, abandoning his clit to massage his legs and hips.

Deeper, he drops, melting through the slats in the wood until he’s nothing but particles of sand. There’s an unnatural buzzing in his ears that numbs his lips and nose. His innards slosh with the gentle, comforting rocking of Vash’s fist as it softly thrusts inside of him.

Deep down, he’s glad that Vash is here. He hopes that they’re Vash’s babies. In this murky, submissive place, he’s happy that Vash got pleasure from his pain and suffering. That he felt so good enough to reward Nai with his cum and his fist in his cunt.

With a wet gasp, Nai’s orgasm overtakes him. It’s oozy and amorphous, slow and sensual. Moans spill free from his lips, untethered, as he lies there and lets it consume him.

“Is my big brother coming?” Vash says so sweetly, and Nai nods as he rides through it. Yes, yes. “I can barely feel it. Does it feel good?”

Nai nods again, but Vash stops him with a noise. “Tell me.”

Nai tries to collect the words – it’s either been one minute or one hour but his orgasm hasn’t stopped, it’s just crested and fallen like his contractions, never ending. “S-so good,” Nai croaks, throat dry. “Mmm… just won’t stop.”

Vash chuckles, like something’s funny, “Maybe your body thinks I’m mating with you.”

Nai’s head rolls. “Fuck”

“Nobody else will ever fill you up like this.” Vash’s fist punches just a little bit harder as Nai yelps. “Only I can.”

Only Vash, Nai repeats in his head until the words echo, getting softer and softer until his orgasm tapers down to a background buzz. Nobody else, just Vash.

As if satiated, Nai sighs heavily. He’s so tired he swears he could sleep for the next thirty years, and his lids slide shut until he’s jolted awake by Vash pulling out of him with a wet squelch. Grimacing, he squeezes his legs shut in a weak attempt to stave off the strange empty feeling left behind.

“Good job, Nai,” Vash says as he scoops Nai up just enough to deposit him on one of their bed rolls. When he kisses him on his forehead, Nai looks up at him, but it’s as if he’s in a dream. “You just rest now. I’ll take care of this.”

Nai wants to argue that it’s not Vash’s mess to clean up. That it’s humiliating that he can’t even take care of himself. But the words die in his throat as he slips off to a deep, deep slumber.

When he awakes, the room is spotless.

There’s no messy puddle of questionable fluids. There’s no eggs. But more importantly, there’s no Vash.

“Vash?” Nai calls out, frantic. “Vash!”

“Here I am!” Vash barrels in through the front door, sheet flapping behind him. “Sorry, I was just outside. The suns seem to be going back to their initial patterns. Whatever that was, it was a pretty short season.”

Right. Nai scrubs his face, disoriented. “How long was I out for?”

“Oh, hmm…” Vash says as he packs up his things, artfully positioning them in his bag. “Three? Four days?”

Four days? He was out for that long?

“The eggs –”

“Don’t worry about it.” Vash doesn’t look at him when he says it, which begets more questions than answers.

Nai’s spine cracks as he sits up, throwing the sheet off of him. He’s in his shorts and a simple shirt, his clothes laid out next to him. It takes a few tries for him to stand, but once he’s upright he’s feeling sturdier than he did when they found this place. And most of all, his belly isn’t so swollen anymore.

Nai doesn’t hesitate to get dressed. “We should get going.” He wants this place as far behind him as possible.

“I knew you’d say that,” Vash says while zippering his bag shut for emphasis.

They leave the shack as empty as they found it, and as they walk away, there’s a moment where Nai turns around and debates setting the place on fire until Vash stops him with a hand on his shoulder. Hopefully, with time, the sand will wear it away for him.