Archive of Our Own ^beta

Chapter Text

Mylo opens the door to their cabin, kicking off their boots and hanging up their knit cap on the hooks on the wall nearby. The air inside smells fresh, as if someone had recently cleaned and taking a look around it was clear that someone had. 

Everything was tidy- all of the loose papers and mugs and books that usually littered the table in front of the sofa had been put away properly, shelves had been dusted, blankets rearranged and settled nicely on the back of an armchair -and the sight brings a quiet smile to Mylo’s lips. 

Their smile only grows when they notice Chert at their desk across the room, the only messy place left in their small living space. 

Chert scribbles furiously over their notes, muttering quietly to themself but just loud enough not to hear Mylo’s footsteps as they crept up behind them.

Upon growing closer, Mylonite notices something that sparks something in their stomach, something they hadn’t ever felt before. It’s a warm, strange ache that only seems to spread when they reach their destination and rests their hands on their partner’s shoulders.

”Is that my shirt?” Mylo asks, tightening their fingers and drawing Chert’s attention away from their notes and to the hearthian behind them.

”Hm?” Chert looks down, only to laugh, “Oh! Yes. Gabbro’s out with the laundry and this was the only clean shirt left in the cabin.”

They say it so matter of factly, as if the way the collar drifts over their shoulder, exposing the crook of their neck and the smattering of speckles that runs across their skin, doesn’t do something to Mylo. As if it doesn’t fuel the strange fire starting to bloom under their skin.

Without thinking, their brain short circuiting too much to realize their body had moved without any input, they press closer behind Chert and wrap their arms around them. They pepper little kisses to the side of Chert’s head, nibbling at their ear and neck with a newfound hunger.

Chert wiggles in Mylo’s grasp, ducking their head away from the kisses to hide their purpling cheeks.

”M-Mylo?! What’s gotten into you all of a sudden?”

Mylo’s hands start to wander. They tug at the hem of their shirt until they could slip under and squeeze at Chert’s soft tummy, making the astronomer gasp.

They nip at Chert’s neck, earning a second gasp that sends another shock to their steadily warming core.

”You just…” Mylo takes a shuddering breath, stifling it in the soft skin behind Chert’s jaw, “Stars you just look so good in it.” 

The shirt itself is baggy, much too big for Chert and when the astronomer stands from their chair to turn and face their partner, Mylo’s eyes widen when they realize that… Chert isn’t wearing any pants. At least none that Mylo can see since the shirt hangs well past their ass, almost to their mid thigh.

The warmth grows, turning their stomach in knots before starting to settle much lower and… oh. Oh.

They get it now. What this feeling is.

It wasn’t something they had ever felt about anyone, nor did they really care to think about it too hard, but now that they did feel it… It’s almost unbearable, as if they needed Chert or they would explode.

”Bedroom.” Is all they manage to say, their voice straining almost as badly as their pants.

Chert tilts their head, eyeing Mylo’s face with curiosity, “What?”

”Chert. Bedroom. Please I-“

Chert’s face of realization, a brief flicker of shock before melting away into something half-lidded and flirty, doesn’t help the tightening in Mylo’s pants in the slightest.

”Really?” Chert stifles a disbelieving laugh behind their hand, “ This is what gets you worked up? Me… Wearing a shirt?”

” My shirt.” Mylo corrects, the word ‘mine’ echoing in their head over and over.

”Right. Yes, your shirt.” Chert twists the hem between their fingers, dragging it up just enough for Mylo to get a tiny glimpse of short, green boxers before dropping it again, “Still, this is what does it for you?”

Mylo can’t stand being teased any longer. They bring Chert’s face up so their eyes can meet, so Chert can see the utter desperation in their gaze.

”Please, Chert.”

Chert gives a small nod of approval, but before they can even say one word, Mylo’s lips are already on theirs. They kiss with a hungry fire, teeth catching on Chert’s bottom lip as they crowd their smaller partner against the desk they were once sat at. 

They pick Chert up, making them squeak and wrap their legs around Mylo’s waist.

”Careful!” Chert warns but Mylo doesn’t give them an answer or an apology, they just suck bruise after bruise into the skin of their exposed shoulder.

Hands cling to sweater as Mylo stumbles with Chert in their arms into their shared bedroom before practically tossing them onto them onto the bed.

When Chert lands with a quiet oomph , Mylo suddenly hesitates.

They’ve never done this before, they haven’t even talked about it. It always felt unnecessary and despite making out and cuddling, neither of them ever felt the need to take it further than that.

They stare down at Chert who’s flushed and panting, a certain something glittering in their eyes that Mylo doesn’t recognize, and oh-

Their shirt is hiked up, displaying the astronomer’s stomach and giving a tiny peek at their heaving chest. It’s enticing, practically begging Mylo to reach out and touch.

And touch they do. 

All hesitation flies out the window as Mylo grabs a handful of Chert’s tummy and gives it a gentle squeeze just as they had earlier. And just like before, Chert gasps softly, the sound dampening Mylo’s pants even further.

”M-Mylo.” Chert pants, looking off to the side with dark, violet cheeks. They worry their lip nervously, hands twisting at the blankets below them.

Mylo leans down to kiss them, a sweet reassuring thing, and strokes up their stomach to knead and play with their chest. Chert keens into their mouth as Mylo strokes and squeezes every soft, sensitive spot they have until they’re nothing but a trembling, whining mess beneath them.

“Is this okay?” Mylo breathes, nosing at their partner’s jaw as they tug at the band of their underwear.

They can feel the way Chert swallows back their nerves, the way their breath suddenly hitches and stutters when Mylo’s thumb runs up and down the crevice of their hip, before they finally give their nod of approval.

”Yes. Stars- Please .”

Smiling into Chert’s throat, Mylo slides their partner’s underwear down and off, tossing it behind them to be lost until later.

On instinct, Chert’s knee comes up to cover themself, face growing impossibly darker, but Mylo guides it away. They stroke their thighs with a soothing touch and pepper kisses against the astronomer’s cheeks and jaw until the body beneath them relaxes against the mattress.

When Mylo’s thumb slides down to find Chert’s slit practically dripping with arousal, they have to suppress a shiver of excitement at the idea of Chert being just as desperate for this as they are. That Chert needs this, craves it even.

Chert nearly chokes as Mylo’s thumb drags back up, nudging against their probe where it was peeking and guiding the tip a little farther out of its sheath.

Every reaction Chert gives them as they repeat that motion- every stuttered sigh, every squeak, every moan -Mylo drinks all of it up, and they replace their thumb with their smaller finger, gently pressing against Chert’s entrance until it starts to slide in.

Chert tenses around the intrusion, forcing Mylo to stop for a moment.

”Hey. Breathe, starlight. I’ve got you.” Mylo murmurs, retreating their finger and resting it on the edge of Chert’s thigh for a moment

Chert follows their instruction, taking in a deep breath and letting it out slowly as Mylo’s finger returns and slides a little deeper.

Once Chert is fully relaxed, eyes closed and breathing quieter, Mylo begins fingering them earnestly.

In all honesty they’re unsure of what exactly they’re doing. They’re going on blind instinct and what they think might feel nice as they crook their finger and stroke against their partner’s sensitive inner walls.

Whatever they’re doing, however, seems to be working as Chert’s thighs start to tremble and they arch their back, following Mylo’s hand every time it retreats. 

Mylo watches on in awe as Chert’s breathing speeds up, eyes squinching tight before their lips part and a breathy sound is torn from them. They clench around Mylo’s finger, slit fluttering as they finally fall over the edge.

After giving Chert a moment to come down, Mylo leans back and carefully pulls their finger out, and the sight beneath them nearly makes them drench their pants with slick.

Chert’s glasses are fogged and askew, one arm thrown over their forehead while the other white knuckles the blankets. Their lips are still parted as they pant for breath, stomach and chest flushed a pretty purple from where it peeks out beneath Mylo’s baggy, wrinkled shirt.

Their probe twitches against their stomach, drooling a sticky white pool onto their naval and making Mylo’s mouth water for some reason.

The sight is beautiful. Chert is beautiful…

The ache in Mylo’s pants becomes too much, the heat against their skin too intense, and they hastily free themself from the prison that is their pants. They kick them off alongside their underwear and throw their sweater to join Chert’s underwear wherever they ended up.

They don’t hesitate to take their probe in hand, stroking themself to the sight of Chert splayed out below them. They rock up into their fist, groaning deeply at the rush of pleasure shooting through them.

Suddenly, Chert stirs, making Mylo pause when a hand finds theirs.

”Let me. Wanna feel you… Make you feel good.” Chert mumbles, still a little dazed from their climax, but Mylo lets them take over.

The feeling of Chert’s hand around their probe sends sparks behind Mylo’s eyes. It’s much smaller than their own, warmer too, but it doesn’t matter.

“Can I-“ Mylo’s eyes flutter shut with a shaking breath when Chert flicks their wrist and runs their thumb down sensitive ridges, “Can I fuck you?”

Chert’s hand stills, giving the probe in their grasp one last careful squeeze before retreating further away, much to Mylo’s disappointment.

When Mylo’s eyes open back up, searching for the reason for the sudden pause, they find Chert settled against the mattress, legs spread as wide as they can to accommodate Mylo.

Chert gives them a shy nod, their half lidded gaze and tiny, inviting smile making Mylo’s heart skip in their chest.

Mylo shuffles forward, aligning themself probe to slit before slowly pushing in. It takes everything they have not to bury themself in one fell swoop the moment they feel the tight, wet heat surrounding them. It’s almost too much and they shake with each new inch Chert takes until their partner gasps and grabs their wrist to stop them.

”I think that's- mngh -as far as i can take.” Chert whimpers, fingers tightening around Mylo’s wrist in hope that they understand.

Mylo nods, and strokes Chert’s cheek with their thumb soothingly. “Okay. That’s as far as I’ll go. I’ve got you.”

It’s not their whole length but it's certainly enough that they can feel every clench and every shudder, and with how close they are already, maybe it’s best they can’t entirely fit…

Slowly, Mylo slides out to the tip before thrusting back inside, careful to keep the same depth so as not to hurt their partner.

Chert’s back leaves the mattress again and their legs cling desperately to Mylo’s waist as they speed up the pace with each new thrust. It feels too good, Cherts body clings to them so perfectly, and its not long before Mylo starts to lose composure. 

As they start to really chase their pleasure, the tiny ‘ah- ah~’s Chert lets out are music to their ears. It’s all their partner can say, so drunk on pleasure that they can’t string more than a few words together.

Mylo’s not much better off.

They lean down to bury their nose into Chert’s neck by the collar of the borrowed shirt, stifling the quiet whimpers of Chert’s name against the soft fabric. They breathe in a mixture of their scents and shudder a sigh. The pine scented soap they like and the natural sandy spice that lingers on Chert’s skin even months away from the Ember Twin become a powerful concoction that has their probe twitching and drooling inside Chert with every inhale.

Mylo continues at a punishing pace, their hands finding purchase on Chert’s hips as they grip them tight, indenting plump skin in an attempt to ground themself.

Gripping Mylo’s hips with their knees and pulling them deeper, Chert cums for the second time that night with a choked moan, shaking and shivering as Mylo continues to fuck them through their climax.

It doesn’t take more than a handful of more thrusts before Mylo finally follows suit. 

When they feel that wave of pleasure threaten to crash they barely manage a warning before pulling out and unloading over Chert’s stomach in hot spurts, adding to the mess already there from the astronomer’s past two climaxes and barely missing the hem of Chert’s shirt. 

Mylo falls to the side to lay shoulder to shoulder with Chert as they slowly come back to themself. They pant just as hard as their partner beside them, brain fuzzy and stupid grin tugging at their lips.

They can’t believe they just did that, the whole experience feels almost dreamlike.

”Woah…” Mylo breathes, the only word they can get past the pleasured haze that consumes their brain.

Chert barks out a laugh and they roll over to bury their face into Mylo’s shoulder with a happy sigh. 

“Woah. Woah, indeed.”

Chapter Text

It's late at night and Mylo can't help the itch they feel under their skin.

Ever since their first time with Chert, they've felt this underlying buzz, this want, this need for their startner and the way they'd felt around them that night.

Mylo glances to the empty spot next to them where Chert usually sleeps and a small sigh escapes them.

Chert was away at the observatory, busy filing and studying for their next trip to the Ember Twin and no doubt fell asleep reviewing over old star charts. Gabbro's spot was also empty since they were off on giants deep again, probably working on their ship or snoozing away in their hammock.

Mylo sighs again, stomach aching with loneliness as they lay by themself in a bed built for three.

They roll over onto their side, nose brushing against Chert's pillow and taking in the faint scent that lingers there.

It smells like them, like the same sandy spice they smelled when they had their nose buried into the collar of their partner's shirt and their probe throbbing inside them.

They inhale deeply and the fire in their stomach only grows. Unable to take it any longer they skate a hand down their stomach and hips until the pads of their fingers brush against their emerging probe.

Mylo shudders a breath, the whimper that falls from their lips muffled against the pillow as they trace the length of their slit teasingly.

They imagine it's Chert's hand that parts their slit, gathering slick on their fingers before pressing carefully inside.

They roll their hips against their own hand as they think about Chert slowly taking them apart. Each crook of their finger would be calculated, perfectly executed in the way they know will drive Mylo mad with want.

They pant into the pillow, smothering their desperate keens as they start to finger themself earnestly.

"Please…" Mylo whines, rutting the base of their emerged probe against the palm of their hand. "Chert-"

The sound of a door opening and shutting makes Mylo freeze, eyes shooting wide and locking onto the bedroom door.

"Mylo?"

It's Chert's voice that calls from the living room, a little gravely probably from falling asleep at their desk.

Hastily, Mylo stuffs themself back into their underwear, adjusting the dampening bulge as best they can before wiping their hand on their shirt and pretending to sleep.

The bedroom door creaks open before clicking shut as feet quietly pad into room and, after a moment of rustling fabric, a weight falls into Chert's previously empty spot.

Chert lifts Mylos limp arm and wiggles under it, resting it on their waist and snuggling closer.

Though when their bare knee tangles with Mylos legs, Chert freezes. Slowly fingers trail down Mylo's thigh until it rests against the damp bulge in their underwear.

"Oh-" Chert breathes, stunned at the discovery but when they go to retract it Mylo catches their wrist.

"Please." They murmur, eyes flashing open to catch Chert's gaze, lips parted as they roll their hips into their partner's touch.

Chert hesitates for a moment before pressing their fingers harder against Mylo's probe, tracing the outline in their underwear before sliding up and under the band of their underwear.

Mylo groans in relief when Chert takes them in hand and slowly drags them out of their clothbound prison.

"Needed me that bad, hm?" Chert huffs, stroking Mylo languidly and teasing the already dripping tip with their thumb.

Mylo is too far gone already for words, and instead they nod and press closer with a whine.

Chert sucks their teeth and gives the length in their hand a tight squeeze before letting go earning them a disappointed hum from their partner.

Though they don't leave Mylo disappointed for long.

Chert presses their wet hand against Mylo's chest, forcing them to roll onto their back before relieving them both of their underwear and crawling on top.

Mylo instinctively grabs Chert's hips, eyes widening as their partner lines themself up without hesitation and sinks down onto their twitching probe.

"Fuck, Chert-" they moan, eyes falling shut as Chert takes as much as they can before needing to stop for a moment.

Their legs are spread wide around Mylo's hips, thighs straining to keep upright and the sight of them panting above them nearly makes Mylo cum right then.

They tighten their grip on Chert's hips and slowly guide their partner up and down their length. With each downwards glide Chert takes a little more and more of Mylo before eventually sitting completely flush on their pelvis.

Mylo can't help but stare at Chert in wonder as they groan with grit teeth, eyes shut tight and slit gripping them like a vice. They glance down to where Chert's own probe kicks against their stomach, slick drooling from the tip and forming a puddle beneath them.

"Stars…" Mylo breathes only to gasp when Chert starts to move again. It's slow going at first before their partner really ramps up, almost bouncing on their probe with small moans and whines torn from their throat.

The whole time Mylo helps them, hands firmly planted on their sides. They try their hardest to let Chert control the pace, to let their partner go as far as they want but eventually it's too much.

Mylo thrusts up into the warmth surrounding them, knocking Chert of balance a little and earning them a squeak of suprise. With each thrust they drag Chert down onto them, burying themself deeper and deeper.

Chert half collapses onto Mylo's chest, mouth agape and eyes rolling as Mylo plunges into them again and again. They grab onto the sheets on either side of Mylo's shoulders, knuckles white, holding on tight as Mylo practically uses them.

Mylo feels Chert tense around them, feel the ripples their slit gives off as they tumble over the edge with a long moan.

Cum pools warm and sticky between them but Mylo doesn't stop. They desperately rut into Chert, nails digging into their soft edges as they chase their high. They need this, need Chert, need the warmth and pleasure they provide.

Chert is nothing but a drooling mess as they give into Mylo, whines and gasps the only thing they can manage besides the occasional swear and cry of their partner's name.

Finally, Mylo feels it, feels the tether in their stomach start to wind tight but when they go to pull Chert off, Chert clings tighter. They bury their nose into Mylo's collarbone and plead a quiet 'inside' with few clenches of their slit.

Mylo's heart flips before it practically bursts alongside their probe. They drag Chert down onto of them, burying themself as deep as possible and fill their partner up with load after load of cum. They cry out, a long keen drawn from them when they feel Chert's slit ripple again, closing in on them tightly as they cum a second time.

For a long moment Mylo and Chert lay stuck together, gasping for air, before Mylo slowly helps Chert off of them and lays them out carefully beside them. After checking that Chert is okay, Mylo gets up to find something to wipe themselves off.

They're careful with Chert who's back and slit are sensitive and sore and once everything is as clean as they can get it they climb back into bed with Chert who immediately seeks Mylo out for cuddles.

Mylo wraps their arm around Chert's waist and rubs the small of their back in careful strokes which the recieve a quiet hum of thanks.

"I'm sorry, I hope I wasn't too rough…" Mylo murmurs into the quiet of their embrace but is met with a pair of soft lips against theirs.

"I'll be fine." Chert responds. Their breath is warm against Mylo's mouth and they can't help the tiny smile that quirks their lips.

"Okay. That was so…?" They're at a loss for words, their brain still hazy with pleasure and from the way Chert's large eyes gaze up at them with such fondness.

"Good. Amazing even," Chert finishes Mylo's sentence for them before pressing impossibly closer to tuck their nose into Mylo's chest. "Thank you."

Mylo huffs a laugh and places their chin on the top of Chert's head.

"I should be thanking you, starlight. I didn't know you had that in you!"

Chert snickers into Mylo's skin and tightens their embrace for a moment before relaxing back into them, "I didn't know i had it in me either…"

Mylo yawns and shuts their eyes, body succumbing to the warmth radiating off their startner.

"I love you, Chert." They say, not receiving a response from their already dozing partner.