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Summary:

After spending each season beating his dick to live feeds of Leo laying eggs, Donnie knows well that Leo always desperately finds something to stuff his stretched hole with afterwards.

This season, Donnie makes sure to walk in right when Leo’s at his most desperate.

Notes:

Threadfic to fic-fic let’s take it from the top 👏

For reference, because I pulled this shit AGAIN:

💜 - Donnie’s POV

💙 - Leo’s POV

💜💙 - Both’s POV

Also, the very beginning of the fic is in past tense because it’s in the past, just in case anyone got confused 🙏

Anyway, hope you enjoy! Warnings in the endnotes as always 😘💜💙

(See the end of the work for more notes.)

Work Text:

💜


Growing up, Donatello would be inclined to say that he and his brothers’ “animal instincts” weren’t too apparent. Especially not when compared to their human mannerisms. It was to the point that, had they not been green and (mostly in his brothers’ cases) prominently shelled, no one would have been the wiser that half of their DNA was made up of turtles’.

So it was a shock when, at the end of their teenage years, the four of them were suddenly met with new bodily cycles known as their “seasons.”

They were nothing short of annoying, to be blunt. Donnie would be right in the middle of an important project and then suddenly he’d want to fuck his brothers and fight them at the same time. Trying to ignore it never seemed to work either, he just ended up mindlessly rutting into a mound of pillows with his cum covering everything. Things got moderately better for him when he installed a small pool for himself, but then he ended up feeling ridiculous knowing he dragged a pillow underwater to fuck it.

He wasn’t a fan of these “seasons”, obviously.

At least, he wasn’t a fan of his own.

Now, Donnie was aware that, technically, putting cameras in his brothers’ rooms was a line he probably shouldn’t have crossed, and to his credit he did refrain from doing so for years! But! The thirst for knowledge is one not so easily quenched, and Donatello was always thirsty.

He wouldn’t watch every recording, to be fair. With the amount of footage he’d need to go through, he’d never get anything done! No, instead he took the time to just…check in, every now and then. And not even to recordings, but instead to live feed. Just to make sure his brothers were safe!

If he checked on a certain red eared slider most of all, then that was no one’s business but his own. It was all very platonic, even innocent once you took out the “recorded without consent” part of it all! He simply wanted to see that Leo was still around- no, he needed to make sure of it. Safe, sound, and there with them- with Donnie.

One day, as usual, Donnie got the urge to check on Leo. He knew, just as he knew that uranium had a Mohs hardness of 6, that Leo was due for his own season about this time of year. But neither of those bits of knowledge were things he was actively thinking about as he pulled up the Leo’s live feed on his screens.

He realized his mistake very quickly, what with the clear nest and the very naked slider curled up within the blankets.

…Despite the voices in his head sounding suspiciously like Raph and Mikey telling him to click away and give the slider privacy…Donnie could not help but keep watching.

He watched as Leo shifted, his legs spread open wide and his swollen slit winking at the camera. He watched as Leo’s fingers stuffed themselves into the slider’s hole almost subconsciously. He watched as Leo seemed almost in pain rather than pleasure.

A bolt of diluted concern incessantly knocked at Donnie’s brain, but he couldn’t move. His eyes were glued to want he was witnessing, taking in every detail and saving it to his memory, uncaring that the feed would be recorded anyway. He sees Leo shift again, sitting up with his legs still open wide to the camera, and-

And-

Eggs. Small and round and wet. They stretched open Leo’s pussy and made the slider’s beloved face freeze with his mouth open in a silent “oh”. One by one they slid out of Leo, always just barely catching on the puffy slit lips before dropping onto the nest.

To most, this would be disturbing. Gross, even. One would think Donnie in particular would be uncomfortable witnessing such a display, and by his own brother no less!

But Donnie’s cock dropped on its own accord with the breaching of the third egg, and he spent the next hour with his own pants echoing his lab as he rubbed his dick raw at the sight before him.

When the last of the eggs was laid, Leo’s pussy was gaping, suddenly looking so empty and inviting. Donnie wanted to fuck it – Donnie wanted to fuck Leo.

And clearly, Leo wanted to be fucked himself, his fingers stuffing themselves violently into his stretched out hole as an expression that could only be described as pure desperation painted the slider’s face. Leo rode his own fingers, tears beading up and falls down his face, tracing his stripes. He was flushed, sweating, and no matter how much he grinded onto his hand, he just couldn’t-

White seared Donnie’s vision, his hips thrusting forward haphazardly in the aftershocks as his hand was coated in cum. He was unaware of anything for a moment, only processing the pleasure that continued to make his cock twitch, the last drops of his cum dribbling out as he caught his breath and gained awareness.

…Oh. Hm. So…he masturbated to a live feed of Leo. And clearly, he had much more luck than the slider did, if the miserable look on the other’s face said anything.

Donnie stayed still for a moment longer, watching and watching as if he couldn’t physically bring himself to tear his eyes away. Eventually though, he shut off the cameras, swiveling his chair around and resting his chin on his dirtied, steepled hands. He looked out into the darkness of the lair, only neon purples dimly lighting the area around him.

He breathed in deep, and let the breath out.

First. He needed to clean up. He was gross.

Second. He needed delete the recording of the live feed. It would be wrong to have on hand.

Third…He should never do that again. In fact, he should just remove the cameras from his brothers’ rooms altogether.

He told himself that he wouldn’t do any of that again. That he would “respect boundaries” as Mikey often pushed him to do. None of what had happened was going to happen again.

Donnie watched the next three of Leo’s seasons, beating his cock to each one like a madman hungry for just a taste at salvation. He found, over years of watching, that Leo would always desperately search for something to stuff himself full after his egg laying. The slider had even bought a decently sized dildo to do the job, but even that was only a temporary reprieve for the other.

Watching Leo’s desperation to be filled each season, miserable and surround by eggs…it all made Donnie want to help. He was a fixer, after all. He could help. And he wanted to “help” in a way that benefited them both – a way that he knew was exactly what they both needed.

All of that, lead to now. Leo’s current season.

And this season, Donnie makes sure to walk in right when Leo’s at his most desperate.

He knows he’d timed it right when Leo looks up at him in hazy shock, even as his tail unfurls invitingly. Leo’s mask, the only fabric still covering the slider, sits haphazardly on his face and does nothing to hide the flush on his cheeks. Leo’s hole is weeping slick and gaping, swollen red from both strain and need. A clutch of eggs is framed between striped thighs, and all Donnie can think of is how velvety and wet Leo’s walls are going to feel because of them.

“Donnie-?! What- what the hell, man-?!” Yet despite Leo’s voiced anger, he doesn’t cover himself up in the slightest.

He reddens as Donnie’s eyes trail languidly up and down the slider’s vulnerable form, with special attention to Leo’s winking slit.

“Nardo.” Donnie greets, eyes glued now to Leo’s reddened sex. “You seem to be a precarious position.”

“Wha- Donnie what are you-“ A shiver goes up Leo’s body, and slick pools from his pussy. “You…Ah…“

Leo shamelessly rubs at his puffy slit, panting.

“Oh? What seems to be the problem?” Donnie asks as non suspiciously as he can.

Judging by Leo’s narrowed eyes, he failed at that act, but the slider doesn’t let up his motions. “You- you dick-ahh-“ Leo rubs faster, sinking his fingers into his pussy roughly.

Donnie can’t stop his excitement from showing through a skip in his step as he makes his way over to Leo’s side. This close, Leo smells tantalizing, and Donnie’s pupils blow wide at the sight of Leo’s slit taking his fingers oh so very well.

Donnie’s proximity does less than nothing to diminish the slider’s desperate arousal, as Leo’s motions only speed up further, knuckle deep in his own pussy and clearly no more relieved from his exhaustive efforts.

Donnie grips Leo’s wrist and holds it in place.


💙

 

Leo’s walls spasm around his own fingers, greedily fluttering around them despite their forced halt in progress. Sheer need courses through his veins as he looks down at the hand tightly holding onto his wrist, at the thumb pressing into his pulse.

Maybe it’ll leave a bruise. He hopes so. Fuck, is that weird?

He can’t even bring himself to care if it is.

Leo drags his eyes back up to Donnie’s dark ones, shivering at the weight of the softshell’s intense gaze. The look sends another flare of arousal through Leo’s body, more slick coating his fingers. Still, Donnie’s stopping Leo from getting his fucking relief and honestly that’s a real dick move.

“Why’d you stop me?” Leo’s face burns when his voice comes out as a pathetic whine. “If you’re not gonna help, then-“

“So you need my help?” Donnie interrupts in a flash, seeming to light up at the suggestion.

Leo distantly notes the “need” instead of “want”. And then he thinks about what he really needs, right now. Immediately now.

He was gonna ask Don for help removing the eggs, since he’s here, but…

Right now, they’re both aware of their positions. Donnie, leaning over Leo, a hand gripped tightly around Leo’s wrist. Leo, his own fingers held in place inside himself, legs spread wide to accommodate. Fresh eggs litter the nest around them, a thick fertile smell filling the room.

Oh.’ Leo’s brain says. ‘Mate.’

Donnie’s eyes widen as Leo realizes that he said that out loud.

His brain doesn’t stop though, whispering somewhere in Leo’s consciousness, barely louder than the pulsing of his blood-

Nest is warm. But eggs are bad. Bad clutch - empty clutch.’ It says, ‘Mate is here-

Try again.’

Something primal snaps in Leo then. The same thing that makes him so damn desperate to be filled after laying his eggs. The same thing that warms at Donnie’s presence during such a vulnerable moment for him.

That same thing drives him to yank Donnie down into his nest.

 

💜

 

Donnie’s barely over the (albeit very pleasant) shock of Leo calling him his mate when he’s forcibly tugged downward, hurriedly pivoting so he lands without crushing any eggs.

Squarely on his bare shell, Donnie doesn’t have time to react when Leo moves to straddle him, grinding his naked sex against Donnie’s plastron. The softshell’s hands automatically move to grip Leo’s hips, his head dizzy at the feeling of the slider’s plush heat pressed against him, wet with need.

Need that only Donnie can help with.

The thick pheromones in the air are making it so damn difficult to think.

Leo face is flushed deeply as he babbles incessantly, gyrating his hips in Donnie’s lap. From his nonsensical string of words, Donnie can only make out bits and pieces.

One such phrase being:

“Donnie~ Fuck me~”

It’s a plea that Donnie can’t deny. One that he obviously won’t deny.

He always was the best at giving gifts. Especially if the gift is also to himself.

Donnie digs his claws into the slider’s thighs, pricking the scales and causing Leo’s folds to flutter instinctively. The sight of Leo’s body practically begging to be stuffed is all Donnie needs to rip off his own shorts, the torn wet fabric thrown to the floor.

Donnie’s on the verge of dropping, his glands even peaking past his slit and pulsing with the need to fuck, to do what he’s been fantasizing about doing for years. He knew what he was getting into walking in here, and yet he can’t help but relish in the moment a tad.

Evidently, he’s moving much too slow for Leo.

Donnie hisses when the slider slides back a little, pressing his dripping slit against Donnie’s as best he could. His folds catch on the tips of Donnie’s tendrils and give them just a taste of that wet heat. They twitch and stretch outward, like plants to the sun.

Or a cock to a hole.

“L-Leo-“ Donnie pants out, the stimulation maddening after denying himself for so long.

“Donnie- Donnie, c’mon-“ Leo coos, grinding his pussy right against the barely hidden head of Donnie’s cock, “I can feel you- fuck, I wanna feel everything-“

What little strand of hesitation that was holding Donnie back was promptly ripped apart and thrown away. A ripple of pleasure forces him to drop with an involuntary roll of his hips, a loud, throaty moan escaping his throat as his cock finally slides into mind-blowingly hot salvation.

For as much as Donnie values his mind, he will readily admit that no amount of fantasies his brain managed to construct came close to the feeling of Leo’s stretched out pussy clenching around his cock. His tendrils drag along egg-smoothed walls, the wet flesh quivering as it pulls him further in.

Sparing a glance up at the slider above him is a mistake, as Donnie struggles not to cum on the spot as he sees the look of utter bliss on Leo’s face. Half lidded eyes and a slightly open mouth, mask tails falling delicately over one shoulder, glittering tears on red striped cheeks…

“Donnie-“ Leo’s voice breaks, devolving into a churr that Donnie swears he feels vibrating around his cock.

Now, in his fantasies, Donnie always imagined himself cool and collected as he mercilessly fucked Leo within an inch of his life. He imagined that he’d be able to edge them both for hours and culminate everything into one grand crescendo of an orgasm.

He highly overestimated the amount of control he’d have over himself.

Every slight movement from Leo strokes Donnie’s cock from root to tip, but what gets him the most is the heat. Wet heat envelops his dick so addictively, it leads Donnie to roll his hips to meet it more, an instinctive snarl making its way to his face as he chases that heated pleasure.

He’d had so many plans on how to do this, but all of them were thrown out the window by the real thing sitting so fucking beautifully on his lap, rocking onto Donnie’s cock like it’s all the slider ever needed. Like all he could ever want for at all is Donnie piercing him open just like this.

And Newton’s balls did that rile Donnie up.

He rolls his hips more, rougher, unable to hold himself back from pursuing that high. His head felt fuzzy with pleasure, thinking only to go harder, faster, make Leo cry out even louder as Donnie’s cock spears him open and gives him a nice new clutch all from Donnie and Donnie alone.

As the softshell pants in the salty sweet smells of the slider above him, he distantly notes that the strong pheromones are most definitely messing with his mind. This blatant loss of control is abnormal for him, and frighteningly animalistic.

In the same thought, he decides he doesn’t give a shit.

 

💙

 

Leo gasps as Donnie’s claws dig into his hips, keeping the slider in place and forcing him to hold all of Donnie inside at once. Involuntary churrs ripple out from Leo’s chest, because holy shit nothing will ever feel better than how Donnie’s weird, amazing cock does right now.

The four glands at the cock’s tip are soft and firm all at once, digging into Leo’s insides just right and making themselves at home in him. And Pizza fucking Supreme does he want them to stay. His dildo was nothing compared to the twitching rod scraping at his walls, beating harshly against his deepest parts.

And- his dildo didn’t come with a Donnie attached to it. The calloused hands on his hips hardened by years of mechanical work, the intense gaze from the darkest eyes Leo’s had the pleasure of looking into, the way those lips part just slightly when Leo’s walls clench down…

Leo’s churrs grow louder in volume as he moves his hips just barely around, not rising upwards, simply taking what’s been given to him. It’s exactly what he was always looking for, after each tortuous season. Every time he felt so fucking empty, this was the answer!

Being filled up just like this after a devastating bad clutch of eggs, having it fixed by his mate who’s making Leo feel so full again…

Leo’s movements speed up, rolling his hips in circles in an increasingly louder Donnie’s lap, Leo’s slit still flush against his. Leo’s own pleasured moans and chirps meld with Donnie’s, growing higher in pitch as the sensitive nub at the top of his folds rubs against Donnie’s skin.

His body feels overheated and oversensitive but all he wants to do is crank things up more. He wants to forget his damn name, he wants to lose himself completely to this.

To Donnie.

 

💜

 

Donnie can’t help but look down at where they’re connected, the pooling of slick and precum filling the air with an absolutely filthy sound. The feeling and sight should be off-putting, but Donnie is a man of science.

This is the result of his theory being right.

Leonardo - dear annoying, cocky, infuriatingly sexy Leonardo - is every bit as desperate to be filled as Donnie expected him to be. All those times Donnie watched Leo fuck himself sore after laying his eggs happened exactly because Leo was just that horny afterward.

Horny enough to accept any cock around.

Any cock, hm?

No, that won’t do.

Donnie sits up, holding Leo’s hips even tighter to keep him still. Twin moans fall from their lips when Leo clenches around Donnie in response, but Donnie forces his mind to focus. He needs to know this.

Leo opens his mouth, and as out of it as the slider is, Donnie can see the whine coming from a mile away.

Hey- Donnie, what-“

He’s cut off by Donnie offering a quick thrust upward, just to shut him up. As expected, Leo’s voice trails off into a delectable gasp, his eyes rolling back before they flutter shut.

“Nardo.” Donnie begins, struggling to keep himself clearheaded- or, well, as clearheaded as he can be, in his current situation, with his current position. “For once in your life, I need you to be honest with me.”

“‘m always honest...” Leo lies, yelping as Donnie pinches his ass sharply for it.

“I have a small query to ask of you, dear brother.” Donnie hums, gently rubbing the reddened mark he left behind. He almost loses himself in the thought of leaving so many more when Leo finally answers.

“What the fuck- Don, c’mon-“ Leo’s growl feels more like a beg. Begging suits him, actually.

Another thing to keep in mind for later, Donnie muses as he leaves another pinch, breathing in deeply to control himself when Leo clenches so tightly around him.

His control is paper thin and ripping, but he needs to ask-

“Did it matter, that it was me who walked in on you?”

He gives another pinch.

“Or would you have accepted-“

Pinch.

“-/anyone/-“

Pinch.

“-or rather-“

Pinch.

“-any cock?”

He leaves a particularly mean pinch, and drags his eyes away from the blossoming bruises to look at Leo’s beautifully flushed face.

He waits.

 

💙

 

Leo’s brain isn’t exactly braining at the moment, but he hears the question loud and clear.

“Any cock, huh…” Leo mumbles, trying to ignore the one spearing him open right now. “Hm…” He leans forward, sitting up as best he could on Donnie’s lap so he can send a clear grin. “Probably.”

He yelps as he’s suddenly manhandled, turned around so that his shell now faces Donnie and he now faces the door.

“Is that so?” Donnie’s voice is blank. Even.

Somehow he sounds more predatory than he ever had before.

Leo shivers. “Y-yeah, that’s “so”.”

There’s a hum, then a buzzing flash of electric purple.

In an instant, the once closed door of Leo’s room flies open, the subway car flooded with the dim light of the rest of the Lair. Late as it was, and with their soundproofed cars, not much noise flooded in, but…

“You said “any” cock, didn’t you, Nardo?” Donnie’s question is sharp, pointed. “Well, surely “any” cock includes our dear brothers, yes?” He moves, pressing his plastron to Leo’s shell, sitting Leo solidly in his lap, as if presenting the slider to anyone passing by. “Or maybe even Junior?”

Leo can’t hold in a gasp as his head is suddenly tugged back, his neck forcibly bared.

“April probably has a strap big enough for you.” Hand wrapped around Leo’s mask tails, Donnie leans forward enough to graze his lips to one of Leo’s red stripes. “Maybe you’d rather one of our enemies, instead?”

Leo’s vision is obscured by a hand, and he swallows involuntarily as Donnie mutters, “Or should I blindfold you, and leave you spread eagle in the middle of the Hidden City, where everyone and anyone can try you out?” He nips Leo’s cheek, “Since “any” cock will do.”

“Fuck, Dee-“ Leo trails off, his mind muddled and his body pulsing from where they’re connected. Donnie sure knows how to talk dirty, Leo doesn’t know how he didn’t expect it. He feels Donnie twitching against his walls, and he wants more than anything for those twitching glands to take hold deep inside him and fill him to the brim.

Leo licks his lips, anticipation thrumming through his veins as he knows exactly what to say. “You’re not confident, then?”

Donnie freezes.

“Not confident…that you can satisfy me?” Leo looks back as best he can, catching Donnie’s eyes with a grin full of challenge, “That you can keep me?”

Donnie’s jaw clenches. In response, Leo does some clenching of his own, more than a little pleased to hear the slight hitch of breath when he does. But other than that, Leo stays quiet, still, and listening.

“…I could.” Donnie finally responds, “I could keep you. Forever, should I desire it.”

“Hm, okay-“ Leo drawls with a teasing eye-roll, “So why don’t you?”

 

💜

 

In Donnie’s head, the real answer forms as ‘Because I need you to choose me. I need you to choose me, over everyone else.‘

Out of his mouth, Donnie says, “Why should I?” He moves a hand to wrap loosely around Leo’s neck, like a collar. He takes a moment to appreciate the thought. “Why should I keep you?”

 

💙

 

Because I need to be something, and I know I’d be something to you.‘ is what Leo answers in his head.

Out loud, he replies, “Fuck me, and find out.”

The hand on his neck squeezes, briefly. It moves away to join the other at his waist as he’s lifted off Donnie’s lap.

 

💜

 

Donnie feels the smooth chutes against his plastron, feels the trim waist beneath his hands, feels the cold air blowing on his wet cock as only the head of it stays enveloped in Leo’s dripping, swollen heat.

Then, in an instant, the law of universal gravitation takes hold as Donnie lets Leo fall.

 

💜💙

 

They gasp in tandem, the open door echoing their sounds out just slightly, and soon all they know is the feeling of each other. Everything else melts away as loses importance as they fuck, finally opening to more animalistic desires.

Leo churrs deep in his chest at the feeling of fullness, those churrs devolving into chirps of pleasure as he’s bounced up and down and filled more with each bounce.

Donnie churrs back, growling every so often as he pounds upward, forcing his way into Leo again and again as if to erase any semblance of fantasy Leo may have had for anyone other than him.

And Leo, too, clenches down, drawing Donnie further and further in.

As they move, the wet sounds of their fucking echoing farther than their gasps had, they start to lose themselves again, completely. Eggs to the side, both of them in a nest, their scents driving each other wild - one thought alone goes through their heads:

Mate.’

With the door as open as it is, anyone could walk by and witness them in the throes of their pleasure. Anyone could see the two of them rutting so filthily, so fervently.

 

💜

 

Donnie had meant for it to be an immediate consequence to Leo’s teasing, but now he finds he wants someone to see them.

He wants his claim known.

He may be just a tad possessive, but it’s warranted in Donnie’s correct opinion. And as he grinds his hips upwards his eyes stray to the bruises he left behind on Leo’s skin.

He wonders if Leo’d let him leave a more permanent mark?

His eyes trail up to Leo’s neck.

A collar would be nice. It’s not like it wasn’t something Donnie thought about before. Hell, he’d made one for Leo before. To mixed results, sure, but Leo made it clear he wasn’t opposed to wearing a collar.

But, again, that’s not quite permanent enough. Not to Donnie.

Leo’s walls clench around him suddenly, and Donnie’s gasp mixes with the breathless laugh of a much too cocky slider. 

“Too much for you, Dee? You can always tap out~” Leo teases, and Donnie shivers as he feels the slight wag of Leo’s tail against his plastron.

So, naturally he grabs it.

It’s Leo’s turn to gasp, freezing in place surprisingly fast from the simple action. Donnie notes this with great interest, maneuvering the short tail this way and that solely to play with the sounds coming from Leo’s throat.

Then he pulls the tail upwards.

The noise that comes from Leo then is nothing less than sinful. Loud and drawn out, high pitched at the start and cracking at the end to petter out into a throaty churr. 

It feels better than any praise ever had.

He lets go of Leo’s tail, pleased to see it stay in place, as though Leo still has something to expose to Donnie at this point. He moves his slightly slickened hand up to grip the back of Leo’s neck, a position that both of them seem to be quite into.

Apparently, Leo takes the action as a command of sorts. On shaky legs, the slider moves himself up and down, bouncing himself on Donnie’s cock. With his tail up as it is, Donnie is given a beautiful eyeful of Leo’s stuffed and swollen pussy taking every inch of him so greedily.

His cock leaks more at the sight. He’s close.

 

💙

 

The feeling of the softshell’s tendrils flexing sporadically inside him has Leo shivering in pleasure, his whole body shaking with desire as he bounces more and more. All the while the door to his room remains wide open, and that just makes Leo even wetter. He’s always enjoyed eyes on him, he’d be lying if he said that didn’t include times like this.

Donnie’s hand clenches a little where it sits at the back of Leo’s neck, and that’s enough to draw out yet another mini orgasm from the slider. He wonders if Donnie knows how many times he’s made Leo cum yet. He doubts it, as stretched out and wet as Leo already is.

There’s a pause as Donnie suddenly holds Leo in place, and Leo had all of two seconds to wonder what the deal is before the world seems to flip onto itself.

Suddenly on his plastron, he’s left blinking at the eggs in front of his face, feeling Donnie move over his back.

“Tell me, Leonardo.” Donnie emphasizes this with a sharp thrust that makes Leo see stars. “Did you know I was going to visit you tonight?”

Face down in his own bed, a victorious grin rises onto Leo’s face. “Hmm, I may have eggs-pected you- AH-!”

 

💜

 

Gripping the back of the insolent slider’s neck, Donnie thrusts violently into Leo, successfully stealing away any further attempts at conversion.

Knowing that Leo expected him- that basically meant he was welcomed in. That he was desired.

That he was wanted.

The thought drives him insane, and he swiftly loses the last shreds of reason left within him. His vast amount of brainpower has been placed into the singular motion of plunging into his mate’s wet heat.

The animalistic fervor of their position makes it even better.

Unable to stop himself, Donnie stretches his head forward as far as he can and sinks his teeth into Leo’s neck. Leo’s wail is soft, and his tail raises even higher in response, euphoria clear in his scent alone simply from being mounted and bitten.

Leo wants to get marked by Donnie. Wants to be Donnie’s.

Donnie nearly passes out in pleasure at that.

And with the sheer arousal of everything he’s being subjected to - the scent, the taste, the sound, the look, the feel of it all - his cock manages to drop even more, stuffing Leo to the brim as he forces the slider to take it all. He buries himself deep in those folds, feeling his cock swell up even more.

His tendrils keep kissing the deepest parts of Leo and even further than that, in and out and then-!

It’s as though a wildfire was lit within Donnie’s very being, rolling in electric waves as his tendrils seize  and latch in place to overflow Leo’s womb in thick molten white.

 

💜💙

 

Stretched out as Leo is, nothing can stop the excess cum from leaking out onto his reddened folds even as Leo’s own orgasm has him clenching tightly in sharp bursts, rolling over him in a violent spasm that leaves him desperate to keep every last drop of cum inside. The hot cum spills over Leo’s raw flesh thickly, even running over his clit in a feeling that drives him to make a sound he didn’t even know he could.

The aftershocks overtake the two of them, both lost in the high of pleasure. Donnie’s tendrils slowly let go from where they latched into Leo, cum still dripping out slightly as he pulls out of the whining slider. In the cramped space of Leo’s nest bed, Donnie falls to his side next to him, churring when Leo immediately turns to pull him close. They stay still for a moment.

“We’re gross. We need to wash.” Donnie mutters, the feeling of fluids on his being a discomfort fighting to get through the satisfying haze of afterglow he feels.

“Later.” Leo mumbles, fingers dancing sleepily across Donnie’s cheeks and jaw. “Wanna stay here a bit.”

Donnie’s own hands come up, removing Leo’s mask and tracing his fingers along the bite mark left on Leo’s neck and the tear tracks left on his face. Donnie’s heart stutters a bit.

“When did you get so beautiful?” He finds himself asking.

Leo gives a tired laugh of delight, “Whoa, when’d you get so smooth?”

Donnie slowly sits up, and though he is putting quite the amount of possibly undeserved faith into his limbs, he still goes and scoops Leo up as he moves to the door.

“I assure you, my dear, I’ve always been the romantic type.” He states as they head to the bath.

Leo huffs, “And the creepy stalker type.”

He says this with so much fondness that Donnie can’t bring himself to be offended. It’s also not exactly false after all. He won’t refute a fact. He simply contains multitudes.

Leo continues, “Shit, I still gotta take care of the eggs.”

Donnie tsks, irritation at the unfertilized eggs flaring up within him, “I’ll get rid of those duds.”

Leo snorts at that. “What, mad I didn’t lay yours?”

Donnie averts his gaze, reddening when Leo gives a happy trill at the silent confession.

“Well, maybe next time...” Leo churrs, tapping his fingers against Donnie’s face contently.

Donnie hums, looking down at Leo. At his mate. “Were you sufficiently satisfied by my performance?”

“Enough that if you don’t fuck me again I will beg.”

Exactly what Donnie wanted to hear.

Notes:

Warnings: TCEST, incest, sibling incest, voyeurism, non-consensual voyeurism, dubious consent, Leo’s genitals being referred to as “pussy”, slight dom/sub (way slighter than usual), almost no masochism??? (very weird for Leo!), feelings gunk at the end because I couldn’t help myself, slight breeding kink, potential exhibitionism, Donnie implying he’d let Leo be fucked by anyone (he’s lying because-), possessiveness, insecurities (it’s these two…), think that’s all!

This one has been sitting in storage for sooooo long omg. I finally got around to it though! I love me a Donnie with debatable morals, and so does Leo 💜💙

Hope you enjoyed~