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It's not that Jason doesn't understand.
He does! When Batman took him in, properly, after Ma Gunn's ended up being the absolute garbage fire it was, Batman told Jason what he'd have to do. He took him up to Robin's nest and explained, Robin curled up and happy and just about glowing with excitement and, well.
What else are you supposed to do with omegas, after all? They're only good for one thing. And Batman had been so nice about it too, he won't keep Jason as a whore even though that's basically what male omegas are, he'll let Jason help raise the baby. So it's really the best possible outcome.
Jason just. Has to keep telling himself that.
He swallows, fingers curling around the hem of his nightgown. His heat has slowly ramped up throughout the day, Batman poking his head in Jason's room to keep an eye on its progress. Robin—Dick, as he'd gleefully introduced himself—had to be chased away several times to prevent him from helping it on. An omega's first blooming is supposed to be a communion, they're supposed to meditate on their final moments of life before and prepare themselves for life as a full, proper omega.
Honestly, Jason would've rather spent the day having sex with Dick. He's so wet his thighs slip against one another, his pussy keeps on clenching around nothing and for the past half hour or so he's been making incrementally louder keens that for the life of him he can't stop himself from making.
Jason sighs, blowing his bangs out of his eyes and gives up.
The urge rises up in his throat and this time he leans into it, throwing his head back and keening at the top of his lungs.
Not even five minutes pass before he hears thundering footsteps approach, get louder and louder until Dick slams Jason’s bedroom door open.
“Little wing!” he cheers, waddling across the room as fast as he can. He’s seven months pregnant and Jason is so ready for him to be done with it, because his libido has shot through the roof and Batman isn’t always around and guess who is?
Jason tilts his head back automatically, flower opening to the sun, and Dick cups his face and kisses him, a deep, possessive lick into his mouth. A shudder rolls through Jason from his head to his toes which curl, and he grips his nightgown tighter, pulling it higher on his thighs.
Dick tilts him how he wants Jason, and Jason moves with him, falling away before Dick’s force. Their mouths move together, slick and wet, and Jason throbs when Dick pulls back with a lingering bite at his bottom lip.
“So good for me, little wing,” Dick purrs, carding his fingers through Jason’s hair.
Jason gives a little, fluttering sigh, and leans into the touch. Dick’s pet him before but it’s never felt like this, like every time his nails catch against skin there’s a lightning strike that runs between that and his pussy.
Dick giggles and rubs his face against Jason’s, scenting him. “Can I enter your nest, little wing?”
“May I enter as well, omega?”
Jason looks towards the door. He blinks, and it feels like it takes an age, his eyelids drifting closed and open again as Dick nuzzles against him and kisses him.
Batman is at his door, and as Jason recognises him it’s like his brain was waiting for him to see him to be able to smell him: Jason’s hit with a wave of alpha scent. It crashes over him and tumbles him into the undertow as he’s dragged into full heat.
”Alpha!” he cries, actually cries, tears beginning to stream down his face because he’s so empty and isn’t that tragic?
“Aww, little wing,” Dick croons as he climbs into the nest, presses as close to Jason’s back as he can with his pregnant stomach. “I know, I know, being empty is the worst. Don’t worry, big brother is here.”
He slides his hands under Jason’s nightgown and cups the mound of his pussy. “He’s so wet already, alpha.”
Jason hides his face in Dick’s neck, takes big whiffs of the comforting, bred omega scent. He smells like a mother, like Dick, and the familar scent makes Jason’s head go all fuzzy. He doesn’t fight as Dick pushes Jason’s thighs open, as he pulls Jason’s nightgown up until it’s bunched up around Jason’s waist. (It’s not like it’s hiding anything anyway, all ceremonial, white silk gone translucent where Jason has sweat and slicked through it.)
“What a pretty pair of pups I have,” Batman purrs.
Dick giggles, leaning his head on top of Jason’s. “Aww, B. You sap.”
He slides two fingers between the outermost folds of Jason’s pussy and spreads them apart. Jason whimpers.
Batman grunts.
Jason watches through tear-blurry eyes as Batman drags over Jason’s comfy, overstuffed reading arm chair until it’s in a perfect position to watch what Dick’s doing to him.
Dick presses kisses to Jason’s neck and shoulder as he slowly, slowly slides more of his fingers into Jason’s folds, spreading him open for Batman to look at. Jason pulses around nothing, and can feel it as fresh slick slides out of his held-open pussy.
Batman hums and Dick drags his free hand up over Jason’s pussy and his clit. Even just the glancing touch is enough to have Jason arching up helplessly into it, hips chasing that sudden spark of pleasure.
“Open, little wing,” Dick says, tapping his now-sticky fingers against Jason’s lips.
Jason shoots a glance at Batman, eyes still watering. Batman look at him all ‘listen to your pack omega’, so Jason gulps and opens his mouth.
He doesn’t taste bad. It’s hard to describe. But the way Batman’s face darkens at how Jason looks with something in his mouth, the way he leans forward as Jason flicks his tongue over Dick’s fingers and makes a show of sucking them further into his mouth… Jason can do it, for Alpha.
(What would his taste like, in Jason’s mouth? Similar? Better? Everyone always says alphas taste best to omegas so Jason would probably love it. He’s yet to watch Dick go down on Batman, so far Dick’s only ever been fucked in his bred pussy or Batman has jerked off over his bred belly, smearing his come all over him in a further claim.)
Dick drags his fingers free, grabs Jason’s chin and tilts him up and into a thorough kiss. His tongue lingers in Jason’s mouth, long kisses as Dick kisses the taste of Jason’s pussy out of Jason’s mouth.
Jason shudders, his body weak as he clings to Dick, hips humping against the air, desperate for touch.
Dick draws back and nuzzles against his cheek. "Adorable," he whispers. "My cute little brother."
Jason can feel his ears go hot.
Batman chuckles at them.
"He's so sweet, perfectly ripened B," Dick calls. He mouths along to Jason's nearest scent gland and sucks at it, making Jason's breath hitch helplessly. He flails a hand back and grabs onto Dick's head, holds him in place. A bite from an omega won't take but it's so close to something his body needs.
"Well," Batman murmurs, "if my omega says so."
Jason drags bleary eyes open and watches his approach. He whimpers in disapproval as Batman drags him out of Dick's comforting hands, but the subsequent kiss lays waste to his mind. All Jason can do is open his mouth and press close to the furnace that is Batman's body. He's so big and warm and smells so perfect, but Jason's barely able to take in that other sensory information as Batman systematically works him over.
Batman doesn't break their kiss until Jason's whimpering into it, high pitched sounds in the back on his throat fucked out by the movements of their lips and tongue. Jason feels bruised and flushed when they part, and Batman immediately tips Jason's head back to suck at Jason's other scent gland, making everything below Jason's waist go to absolute liquid.
Jason's vaguely aware that humiliating noises are spilling out of his throat as he's clinging to Batman's broad shoulders, that Dick's giggling behind him, but his entire world is the movement of Batman's mouth on his neck.
When Batman finally draws back, one parting nip to the bruise he's pulled to the surface, it feels like an uncountable loss. Jason whines, reaching for his alpha.
"Awww, little wing. I know, I know, heat is hard. We'll get you knocked up too, don't worry."
…
Right.
Jason nestles back against Dick's pregnant belly and spreads his legs wide, presents his pussy to Batman.
Batman cups his chin, gives him another quick, still-drugging kiss, and leans down to drop a kiss on his clit as well. Jason's hips chase after his mouth and Dick presses him back down.
"Maybe later, if you're good, you can sit on my face and I can eat you out! Mmm, actually, the baby would probably put too much pressure on my spine if I were flat on my back for that long—B, what's a good position I can eat Jay out from?"
"Come stays in Jay's pussy," Batman tells them as he strips off the rest of his clothes.
"That's fair. Next time, Jay, or I can eat you out once you're already bred!"
Jason takes a deep, shuddering breath.
Batman looks the two of them over from the side of the bed. "Dick, your back is hurting."
"Well. It's not about me!"
"Hm."
He grabs Dick's favoured pregnant pillow, and bodily rearranges Dick so that he's lying on his side, back supported by the pillow. Dick just rolls his eyes and laughs, taking it as Batman being Batman, an overprotective alpha being an overprotective alpha. Batman then presses Jason to Dick's front, and Jason shudders as he fetches up against Dick's full belly and tits.
Dick catches it and gives him a grin like a shark. "Aww, little wing. This'll be you in seven months. B is really fertile, you know."
Something deep inside of Jason wants and he ducks his head, blushing.
Dick coos and kisses his cheek. "So cute."
The bed dips behind Jason as Batman climbs on, and big, warm hands land on his hips. Jason shudders and presses his face to Dick's neck. Batman lifts Jason's leg and tosses it over Dick's hips, opening Jason up. Dick wraps his arm around Jason and hauls him close.
Thick alpha fingers press against his pussy, and Jason can't help the way his muscles flex in response.
"B, I can feel him blushing! Do that again!"
One finger slides into him, slowly and steadily but as unstoppable as a tsunami, and Jason shakes his head back and forth, unable to quiver in any other way, pinned as he is.
It's so much, even just this. How's he going to take Batman's full cock?
How's he going to take Batman's full knot??
Dick kisses the top of Jason's head, all he can reach for how Jason has hidden himself in Dick's tits. "I know, but your cunt is stretchy! And it feels really good!"
The finger draws back and Batman presses in with two, just teasing at his rim, and then in to the first knuckle. Jason keens and Batman stops, pets at Jason's side with his other hand.
"Batman, Batman!"
"I know, I know darling. This is what you need."
The heat churning in Jason's gut agrees with him. The stretch feels like not enough, like something Jason needs more of to feel good. Jason rocks back onto Batman's fingers. Dick giggles knowingly at him. Batman kisses Jason's back and works his fingers deeper in increments until Jason is riding the full length of them.
It's still not enough.
He's leaking slick around them and he still feels hollow.
"Batman," Jason whines, reaching back to pull at Batman's hand. "More, more."
Batman chuckles and kisses Jason's neck. "Alright, I think you're wet enough."
He pulls his fingers free and sets his hand on Jason's hip.
He bottoms out in one smooth thrust and Jason swears he can feel Batman's cock in the back of his throat.
He calls out wordlessly. Dick purrs to him, all warm, mother comforting pup, and Jason nestles closer to his tits.
Batman pulls back, drags Jason's soul with him and Jason cries, hollowed to his core.
"Oh, baby," Dick murmurs, and guides Jason's open mouth to his nipple.
It's reflex to suckle. Dick's milk gushes freely. Dick gasps and curls over Jason's body as much as he can.
Batman grunts, a deep thrum of a sound, and presses back into Jason. The rhythm he falls into is slow but perfect, just what Jason needs.
It feeds the beast growing in Jason's belly, his womb, until all he can do is pant open mouthed against Dick's tit. Milk smears across his mouth. Jason writhes. He's pinned in place between his omega and his alpha but he needs to move. He needs to push back into the thrusts because Batman isn't fucking him hard enough.
"B, B, more, he needs more," Dick pants, sounding nearly as wrecked as Jason feels.
"Tight, little cunt," Batman hisses. His hands clamp down hard on Jason's hips. He's going to have bruises there. It feels good.
Batman fucks him, deep, driving thrusts, steadily increasing in speed. He ends every thrust rubbing up against what must be Jason's cervix, because it hurts, but the pain is enough to have Jason's eyes fluttering shut at the thought of Batman's come getting that deep inside of him.
That's where Batman's come belongs. So deep inside of him that it'll never come out. There's no chance that he'll not get pregnant from this.
"You're gonna be the cutest little momma, Jay," Dick croons, stroking Jason's hair with a trembling hand.
"'m gonna be, a good mommy," Jason slurs mindlessly, mouthing over Dick's tits.
Batman shudders against Jason's back. "Such a good mommy," he praises, fucking Jason even faster. "The, the both of you, the best moms, gonna keep you both so safe, you're gonna be safe."
Dick works his hand between them and pinches Jason's nipple, kneading and working Jason's barely there breast like he's already got milk and that's all it takes to have Jason's breath catch in his throat, freezing as his orgasm rises in his belly.
Batman notices and groans, presses him further into Dick and fucks him so hard that Jason plumetts over the precipice of orgasm. He doesn't even notice when Batman comes, moments late, his knot blowing wide.
Batman rocks him through the aftershocks, drawing out Jason's orgasm by grinding his knot in deep. Jason's toes curl and his thighs twitch, his body reacting automatically as his mind vacates the building. Dick pets him and hums.
Jason sighs, eventually, and pillows his head back on Dick's tits. This is truly what he'd been dreading, getting tied to an alpha for however long it took for their knot to go down. It's not exactly like Dick is the most mobile either so he can't exactly bounce out of Jason's destroyed nest and get Jason a bottle of water.
Twenty minutes go by as they all just kind of pet each other and wait for Batman's knot to go down.
Dick's hands freeze on Jason's back and he suddenly wriggles down until he can snuffle at Jason's scent glands.
"Oi, Dick, what the fuck, get off me, I'm still all sensitive!"
"It'll just take a—I can't believe-!"
He ponderously works his way further down until he's at the scent glands surrounding Jason's still knotted pussy, and leans in to take a deep inhale. Jason's face is on fire and he buries his face in his hands.
"B, already?" Dick hits Batman's arm. "You dog!"
Batman kisses Jason's neck. "Hm?"
"Dick, what the fuck're you—get up here-"
"Jay, you don't get it cause you can't smell yourself—your heat's broken!"
Jason freezes.
A heat breaks early for one reason.
"You really will look like this in seven months!"