Work Text:
They made him for it.
Bred him, trained him, broke him down into a weapon that bled instinct and rebuilt him around a core of pure, ravenous protectiveness. Apex Prime Alpha, the Corps called it, like it was a rank you could pin to a uniform. Like it was something you could take off when the mission ended. But the heat of it never cooled. The need never dimmed. They’d carved a rut into his very marrow, a permanent, simmering readiness that coiled in his gut and thickened his cock at the merest hint of an omega in distress.
Frank Castle had believed that once. Had let Maria cup his face in her soft hands and tell him you don't have to be what they made you, Frank. You get to choose. Had let himself believe that the scaffold inside him, that relentless, aching architecture of dominance and hunger, could be dismantled.
For years, in that house with the oak tree in the backyard and the scent of cedar and pack and home woven into every piece of furniture, he'd almost convinced himself it was true. Maria's scent on the pillows, sweet and familiar, a balm to his incessant alpha need. The soft, willing heat of her body under his at night, a sacred refueling that went beyond simple sex into a deep, primal claiming. Lisa's laughter in the hallway. Frank Jr.'s small, determined hands learning to throw a baseball. The architecture of a life he'd built with his own bleeding hands, and between his wife's thighs, and in the quiet, desperate way he'd buried his knot inside her again and again, trying to pour every ounce of his monstrous devotion into something pure.
But the thing about a scaffold is, it never really comes down. It waits. It remembers the weight it was built to hold, the strain of a fully engorged knot, the brutal, beautiful force of a claiming bite.
It grows ivy over the struts so you can almost pretend it's something else, a trellis, a frame, a thing that could hold flowers instead of bodies. But the structure underneath doesn't change. And the day your family dies on a carousel in Central Park, the ivy comes off. The rust shakes loose. The scaffold stands up inside you, bare and brutal, and you remember exactly what they built you to do.
Not just kill. Not just fight.
Protect.
The kill was only ever the method. The endpoint was always the pack. The hearth. The things you loved hard enough to die for, and harder than that, to kill for. To fuck for. To claim so deeply their scent never truly washed off your skin. They'd built him to be a hearth-guard, a weapon whose sole function was to keep the circle safe. Then they'd let his hearth burn. Maria. Lisa. Frank Jr. Three bodies in the grass, three scents fading on a spring afternoon that should have been nothing, just a family outing, just cotton candy and carousel music, and the machine inside him had kept running anyway. His cock still stirred in the mornings, aching with unspent need. His knot still throbbed in his sleep, searching for a home that was ash.
No pack left to protect. No bond to anchor. Just the killing instinct with nowhere to land, turning inward, eating him alive from the inside out.
The man who made him is dead now.
Frank killed him three weeks ago in a laboratory, a facility that didn't exist on any map and didn't answer to any oversight committee. Dr. Elias Thorne, seventy-four years old, still consulting for black-budget military programs, still refining his protocols for apex prime-alpha optimization. Still signing off on the chemical castration of soldiers who didn't respond well enough to the conditioning. Still writing papers with titles like "Endocrine Compliance in Sensory-Class Omegas: Toward a Unified Theory of Strategic Pairing."
Frank had found Thorne in his office, surrounded by framed commendations and a photograph of his grandchildren. The old man had looked up from his desk and recognized Frank immediately, not from the news, not from the Punisher task force briefings, but from the files. From the decades-old photographs of a nineteen-year-old Marine with a fresh high-and-tight and eyes that hadn't yet learned what they were signing away.
"Castle," Thorne had said, and his voice was calm. Clinical. The voice of a man who had spent fifty years turning human beings into weapons and had never once lost a night's sleep over it. "I wondered when you'd come. You were always one of my more... persistent creations."
Frank had shot him in the chest. Had watched him bleed out on the floor of his office while the commendations glittered on the walls and the grandchildren smiled from their frames. Had taken the hard drives and the paper files and the backup servers, everything Thorne had ever written about the Prime Alpha Initiative, everything he'd ever recorded about the soldiers he'd made and the omegas he'd catalogued for strategic pairing.
He'd burned most of it. But not all. Some of the files he kept. Some of the files he read, in motel rooms and abandoned buildings, his hands shaking with a rage so pure it felt almost like prayer.
The file on Dex was the worst. Not because of what Thorne had done to him, the Cogmium-reinforced spine, the neurological conditioning, the tactical training that had turned a broken kid from the foster system into a living weapon. But because of what Thorne had written in the margins, years later, after Dex had already been deployed and recalled and deployed again: Subject Poindexter's fixation patterns are highly specific. He requires a North Star to orient his compliance. Without such a figure, he defaults to chaotic violence. With one, he is the most precise instrument I have ever created. Recommend that any long-term deployment include a designated anchor figure. Note: Murdock's psychological profile suggests a high-integrity subject who might serve as an anchor if genuine trust can be established. The two subjects represent the twin peaks of their respective designations. A pairing would be theoretically unprecedented.
They'd tried to build a guardian and instead they'd made a fixation. A weapon with no safety, searching for something to lock onto. A predator with a permanent, aching hard-on for an omega he’d never even touched. And they had aimed him at Matt like a compass needle swinging true.
Frank thinks about this as he crosses the Hudson in the back of a truck, still healing from a knife wound in his side that should have been stitched three days ago. The suppressants are wearing thin, and every omega on the ferry is a small wound opening behind his sternum. He can smell them through the thinning chemical fog: the soft sweet note of a mated one, the sharper hungrier scent of an unmated one, the slick, musky heat-sweetness of one who's close to her cycle. His alpha hindbrain catalogs them all, unbidden, unwanted, a threat assessment that never shuts off. His cock twitches in his jeans, a dull, insistent throb that he ignores with the ease of long practice.
Not yours. Not yours. Not yours.
The city skyline comes into view through the grimy window, and Frank feels something in his chest shift. It's not homecoming. It's not relief. It's the thing the Initiative's psych evals had circled in red, the thing his wife had loved him for and feared in equal measure, the thing that had made him impossible to discharge cleanly and impossible to keep contained: the territorial imperative. The prime alpha's bone-deep knowledge that some piece of earth belongs to him, and the things on it are his to protect or destroy. His to mount. His to knot. His to fill so full they never doubt who they belong to.
Hell's Kitchen. His territory. Matt's territory. Their territory, once, for a year of heats and ruts and tangled sheets in safehouses that never felt safe enough.
He'd walked away from it. From Matt. From the thing they'd been building in the dark. A bond that hadn't been formalized but had been real, chemical, written into both their bodies in the language of glands and pheromones and the way Matt's scent would sweeten when Frank walked into a room. The way Matt's body would soften, almost imperceptibly, the tension bleeding out of those whipcord shoulders because his hindbrain recognized Frank's scent as safe, alpha, mine. The way Matt's cunt would start to slicken, a warm, honeyed rush that soaked through his briefs, the moment Frank's growl vibrated through the air.
A year of Matt's heats, his ruts, a practical arrangement that had become anything but practical. That had become the closest thing to a home Frank had known since the carousel. Matt's body under his, the sounds Matt made when Frank's knot locked them together, the wet, obscene squelch as Frank drove into him over and over, the way Matt would go boneless and quiet afterward, his blind eyes half-closed, his scent so sweet and sated that Frank's alpha would purr with satisfaction. Frank's seed leaking out of his used, swollen hole. Good omega. Safe omega. Mine.
He'd walked away anyway. Convinced himself he was poison. That everything he touched died. That the only mercy he could offer the people he loved was distance.
The evidence was hard to argue with. Maria. The kids. Every single person he'd failed to save. He'd left Matt in a safehouse with the sheets still warm and the scent of their shared heat still clinging to the air, Matt's body still loose and pliant from Frank's knot, and he'd told himself it was the last good thing he'd ever do.
But the city keeps pulling him back.
Wilson Fisk is mayor now.
The Kingpin in Gracie Mansion. Sitting behind a desk with the seal of the City of New York behind him. SAFER STREETS, STRONGER FAMILIES, the posters say, while Fisk's primes in their unmarked vans patrol the streets like occupying forces.
The man who had Foggy Nelson killed, Frank is almost sure of this. Fisk, the man who took Matt's partner and his best friend and his ability to sleep through the night, now standing in front of cameras in a suit that costs more than a year of Frank's old salary, talking about a city that has lost its way and a return to order.
Order. As if order were something you could impose with badges and beatings and a vigilante task force.
But it's not just the task force. It's the port. Red Hook, where Fisk's legitimate business interests dovetail so neatly with his illegitimate ones. Suppressants that Fisk's companies manufacture, Fisk's shipping lines distribute, Fisk's pharmacies sell at prices that keep omegas compliant and dependent and quiet. Omegas whose bodies are kept in a constant state of half-arousal, just needy enough to seek out the alpha protection Fisk's regime offers. A city full of slick, aching holes looking for a master.
Suppressants that Matt has been taking for years. Suppressants that are failing.
Frank knows this because he's been tracking the supply chain for weeks, following the paper trail Thorne's files laid out. The synthetic suppressants that hit the streets of Hell's Kitchen aren't the same formulation that was approved by the FDA in '98. They're a diluted variant, cut with cheap stabilizers, designed to wear off faster and require more frequent dosing. A chemical leash. A way to keep the omegas of New York just unstable enough to need the protection Fisk's administration offers. Just slick enough. Just desperate enough.
And Matt with his sensory anomaly, Matt with his endocrine system already pushed to its limits by the chemicals that blinded him, Matt who needs a higher dose than most omegas just to function, has been poisoning himself with a diluted product for two years, not knowing that the reason his heats are getting worse, the reason his senses are spiraling out of control, the reason his poor, untouched cunt is clenching on nothing in the middle of the night, is that Wilson Fisk has been cutting his medicine.
The rage Frank feels at this is so pure it's almost serene. The kind of rage that used to make his commanding officers step back and re-evaluate whether they really needed to push him that far.
He's going to kill Wilson Fisk. Eventually. But first, he must deal with the other thing. The thing that's not part of Fisk's machinery anymore but is still out there, still hunting, still fixated on the one omega in the world who's been designated as his perfect counterpart. The one omega whose scent makes Frank's mouth water and his knot ache even after all this time.
Dex's obsession had grown too specific, too narrow, too focused on a single omega in Hell's Kitchen to serve the mayor's wider purposes. Dex was out there on his own now, no backup, no badge, no leash. Just his prime-alpha instincts, his pathological need for an anchor, and the one person in the world he'd decided could give him that. The one person he probably stroked his cock to every night, imagining the slick heat of a bond that would never be.
Frank thinks about Matt, somewhere in that city, waking up every morning in a world where Wilson Fisk is the legitimate authority and he is the outlaw. He thinks about Matt's blood pressure, his cortisol, the way an omega's body holds trauma longer, deeper, in the glands and the gut. The way the stress of living under constant threat can suppress a heat cycle for months, then trigger one so brutal it flattens the omega completely, vulnerable, feverish, scent screaming for an alpha to come and protect, cunt dripping with a need so fierce it's a physical wound. He thinks about Matt's body, that lithe, suffering, saintly body, going through the worst heat of his life alone, empty, keening into a pillow wet with tears and slick.
He thinks about that slim, black-clad figure walking past City Hall every single day, scent carefully neutralized with chemicals that were eating holes in his endocrine system and not killing him. Not putting a billy club through Fisk's skull and ending the whole charade. Not crawling back to Frank on hands and knees, offering up that perfect, tight ass to be filled and claimed and finally, finally given peace.
Matt is stronger, and he is suffering more, and Frank has been in the wind while he suffered it. Frank has left him to ache and want and burn, with nothing but his own fingers to ease the torment—fingers that could never reach deep enough, spread wide enough, fill him with enough weight to satisfy the howling void Frank's knot left behind.
The alpha in him, the prime part, the part that still runs on war drums and pack instinct, the part that remembers Matt's body under his, remembers the sounds Matt made when Frank's knot locked them together, remembers the tight, velvet clench of Matt's cunt milking his cock for every last drop, snarls at the thought. An omega in his territory. Hurting. Unprotected. Empty. The thought makes his teeth ache. Makes his hands curl into fists on the diner counter. Makes his scent spike with a possessiveness so sharp that the waitress in the diner, a beta who shouldn't be able to register it, takes a step back from the counter with a flicker of unease in her eyes. Frank's cock is hard again, a painful rod of unmet need pressing against his zipper, because his body knows, the animal in him knows, that there is an omega who belongs to him suffering, and every instinct screams find him, mount him, knot him, fill him until he can't remember the emptiness.
It clarifies nothing.
The night Matt finally comes to him, it's not on a rooftop.
It's in the abandoned boxing gym where Frank has been squatting for the past week, ever since the encounter with Karen sent him deeper underground. He'd needed a place Dex couldn't find, a place the vigilante task force's scanners wouldn't penetrate, a place where he could plan and prepare and figure out how to kill a rogue prime alpha without bringing the whole weight of Fisk's police state down on his head.
The gym is a relic from another era, a Hell's Kitchen institution that closed down sometime in the nineties, the ring ropes still hanging like nooses from the ceiling, the air thick with chalk dust and old sweat and the ghost of every fighter who'd ever bled on the canvas. Battlin' Jack Murdock's era. Frank had chosen it for that reason, a small private homage to the man who'd refused to sign the Strategic Pairing consent form for his nine-year-old son and had died for that refusal. Jack Murdock, who'd looked at the doctors and the social workers and the military liaisons and said you're not taking my boy, you're not making him into one of your experiments, and had paid for that defiance with his life six months later, a bullet in a Hell's Kitchen alley that everyone called random and no one called what it was.
Frank's nest, such as it is, is in the back room: a ratty mattress on the floor, a duffel bag of weapons, the scattered components of rifles and surveillance equipment. He's been sleeping in fits and starts, his alpha on high alert, his hindbrain cataloging every sound in the building and every scent on the air. The suppressants are thin enough now that he's stopped bothering with them. He's going to need every edge he can get for what's coming. Every primal urge, every surge of arousal that sharpens his senses and floods his muscles with brute strength.
He smells Matt before he hears him.
The scent hits him first, rain on hot pavement, old paper, candle wax, honey gone dark. But now threaded with exhaustion so deep it's almost a sedative, the way an omega's scent goes flat and chemical when they've been running on empty for too long. And underneath it, burnt sugar. The unmistakable reek of distress that makes Frank's alpha sit up and snarl. And underneath that, faint but sickening, another alpha's scent clinging to Matt's clothes like a territorial smear. Dex. A foul, phantom claim on what is Frank's.
And beneath even that—sweet, lush, a ripe, dripping peach of a scent—the unmistakable musk of an omega on the verge of heat. Slick. Frank can smell it from across the room, a warm, honeyed thickness that speaks of a cunt already softening, already wet, already desperate for a knot. His mouth floods with saliva. His cock strains against his fly, instantly diamond-hard, knot already beginning to swell at the base in a primal, agonizing ache of readiness.
Frank is on his feet before the window finishes opening.
Matt comes through the broken frame silent as a ghost, but he lands wrong on his left ankle, an injury Frank can smell, the faint wrongness of improperly healed tissue, and stumbles. Frank is across the room before he can think, crossing the distance in three long strides, his hand closing around Matt's bicep to steady him.
Matt flinches.
No, that's not the word, Matt shudders, a full-body tremble that runs from Frank's grip on his arm up through his shoulder and down his spine, the kind of shudder Frank has only seen in omegas pushed past their limits. In packmates denied touch for so long that a single kind hand breaks them open. His dark glasses are gone. His eyes are raw and red-rimmed, the blind pupils blown wide with exhaustion and something else, something that makes Frank's hindbrain sit up and take notice, heat, or close to it, the fever-bright look of an omega whose body is preparing itself for a cycle that's been suppressed too long. His suit is ruined, blood at the cuff, a tear at the shoulder, plaster dust ground into one knee like he's been kneeling on a floor that wasn't his. The mask is off. And Frank can see it now, the faint, mortifying wet spot at the crotch of Matt's dark trousers, a spreading stain of slick that tells him Matt's been weeping from his cunt for hours, maybe days, trying to hold it together.
"Frank."
Matt's voice is sand. The single syllable cracks in the middle, and Frank hears everything Matt isn't saying. I have buried everyone who ever mattered to me, and you are still alive, and I cannot bear to bury you too. Don't make me do it. Not again. I can't survive it again. I can't survive another night alone with my fingers cramping inside me and your ghost on my skin.
"I need…"
He doesn't finish. Maybe he can't. Maybe he's scared of what will happen if he admits it out loud, here, in front of the alpha who had him and then left him, the alpha whose scent is probably hitting his omega hindbrain like a wave after two years of deprivation. Two years of suppressants and isolation and the constant low-grade terror of being shadowed by an alpha who wants to be his whole world. Two years of no one to ease him through his heats, no one to lock him down and keep him full and let him rest. Two years of his body screaming for a thick, pulsing knot that never came, a hard, heavy cock that never filled him, a load of hot seed that never soothed the burning emptiness inside him.
Frank doesn't make him finish. He pulls Matt in, one arm around his back, the other hand cupping the nape of his neck where the scent glands are hidden under damp, rain-soaked hair. It's an alpha's gesture, primal and claiming, the kind of touch a prime use to check a packmate for injury, to soothe a distressed omega, to remind them both where they belong. Frank presses his nose into Matt's hair, inhaling deeply, letting that intoxicating scent, the distress, the impending heat, the sweet, tragic Matt-ness of him—flood his senses until his cock jerks and weeps a bead of pre-come against his thigh. A low, possessive growl rumbles from his chest, the sound vibrating against Matt's body.
Matt goes rigid for half a second before he breaks apart.
A sound escapes him that isn't a sob exactly but an omega's keening whine, high and desperate, cut off fast like he's ashamed of it. His forehead drops to Frank's collarbone, and his hands grip the front of Frank's jacket, knuckles white against the dark fabric. His whole body is trembling, fine tremors running through him like aftershocks, and Frank can feel the heat coming off his skin even through the layers of the suit. Not a full heat yet, not quite, but close. So close Frank can taste it on the back of his tongue, the sweetness of an omega's body readying itself, the slick gathering between Matt's thighs in a slow, constant leak, the pheromones saturating the air of the gym and making Frank's cock ache and his alpha snarl with the need to mount and claim and knot.
"He's in my head," Matt says, the words vibrating against Frank's sternum. “Dex. He leaves things at my apartment. He leaves signs…” A shudder, more violent than the last, racks through him. “He leaves photographs. Notes. He's been in every safehouse I've had for two years. He touches my things. My sheets. My clothes. My rosary. He leaves his scent everywhere, Frank.” Matt's voice breaks on his name. “Everywhere. I can't get it out of my head. He knows my schedule. He knows when my heat is due. He—he left a vial of his own semen on my pillow, Frank. He wanted me to know what he'd give me. What he'd fill me with.”
Another shudder, and this one is accompanied by a spike of scent so sharp and sweet that Frank's vision goes momentarily red. Matt's heat. It's cresting faster than he thought, accelerated by stress and exhaustion and the presence of a prime alpha whose body he remembers and trusts. Frank's hand tightens on the back of Matt's neck, thumb stroking firmly along the gland behind his ear, pressing into it with a proprietary pressure that would usually soothe an omega. But now it pulls a raw, desperate moan from Matt's throat, an omega's instinctive response to an alpha's dominance. The sound goes straight to Frank's groin. His cock is a solid, iron bar against Matt's hip, and he knows Matt can feel it, can probably smell the thick, musky arousal pouring off him in waves.
"He says we're the same," Matt whispers, and his voice is wrecked with something worse than fear. "He says I'm the only one who could ever understand him. That we're two halves of the same broken thing, and if I'd just see it, we could be complete. He says that when my heat hits I'll finally feel the truth, that my body already knows what my mind keeps rejecting. That my cunt is made for his knot." A violent shiver. "He's been counting the days, Frank. He told me he'd come to me then, when the walls are down, to prove we belong together. He wants to mount me while I can't fight back. Fill me while I'm so deep in heat I'll beg for it."
Frank's growl is a thing out of the desert. Out of the black ops. Out of the place where Thorne's injections had rewired his instincts until he could track a target by scent alone and enter a rut on command. The sound vibrates through his chest and into Matt's body, and Matt whines in response, an omega's instinctive submission to a protective alpha, his knees buckling just slightly, his body pressing closer to Frank's like it's trying to crawl inside him. The motion grinds Matt's hip against the thick, rigid line of Frank's cock, and they both gasp. Frank's free hand drops to Matt's lower back, pulling him impossibly closer, letting him feel the full, terrifying promise of what Frank wants to give him.
"Listen to me." Frank's voice is rough but steady, the alpha register bleeding through with a different tone now, not the kill-growl but the pack-soothe, the sound a prime makes to calm a distressed packmate even as his own body screams for more. "You are the strongest omega I have ever met. You are the strongest person I have ever met. What they tried to make omegas like you into, something that could be owned, something that could be controlled, a warm hole to be bred and discarded," His hand tightens on Matt's nape, thumb still stroking the gland. "But you… you're proof that they failed. Every single day you're still fighting, you're proof that they failed. This—" he grinds his hips forward once, letting Matt feel the iron-hard length of him, "—this is not control. This is choice. If you want it. Only if you want it. I will never take. I will only give. I will give you everything, Matt, every inch, every drop, for as long as you need it."
"He was in the files," Matt says, and his voice is barely audible. "Thorne's files. The ones you took. Karen told me. She said… she said Thorne had been watching me since I was nine years old. Since the accident. He was the one who…"
"I know." Frank's voice is rough. "I read them. All of them. The chemical company that blinded you… it was a DOD contract. Thorne consulted on it. He was there from the beginning, Matt. He's been watching you your whole life."
"He knew about my senses. About what the chemicals did to me. He's been, my whole life, Frank. My whole life…"
"He's dead." Frank says it flat, certain. "I killed him. Three weeks ago. He's never going to touch you. He's never going to watch you. He's never going to write another word about you. He's gone. He can't study you. He can't pair you. He can't ever lay a single, clinical finger on what's mine." The word mine drops from his lips like a branding iron, and Matt keens, his hips twitching forward involuntarily, seeking friction.
"You killed him."
"Yes."
"For me."
"I killed him because he was a monster," Frank says, and it's true, but it's not the whole truth. "I killed him because he made me into a weapon and he was trying to do the same to you, trying to turn you into a lab specimen he could study and control and pair with whichever prime alpha needed a behavioral anchor. But yeah, Matt. I killed him for you."
Matt pulls back just enough to look at him, to see him, in that way he has, the heartbeat-reading way that no lie can survive. Frank lets him. Lets his pulse hammer out the truth, lets his scent flood the space between them with everything he can't say out loud. I'm sorry. I was wrong. I should have been there. I should have stayed. I should have never left. I love you. I will die before I let Dex take that from you. I want to bury myself inside you until you forget every second of loneliness. I want to fill you so full of my knot that you can't walk, can't think, can't breathe without me.
"Where do we go from here?" Matt asks, and his voice is exhausted but steady now, the keening omega note fading into something more grounded. "Fisk is still mayor. Dex is still out there, even if he's not Fisk's anymore. He's a ghost with nothing to lose. I can't stop him alone, Frank. I've been trying for two years, and I can't stop him. Every time I get close, he's a step ahead. He knows my moves before I make them. He knows my body before I do. He knows my heat is coming. He's probably already circling, waiting for the scent of my slick to hit the air."
"Because he's an apex prime alpha." Frank's voice is flat. "Just like me. He was built to read omegas. To anticipate them. To stay one step ahead." He pauses. "But he wasn't built to deal with me. He's never faced an apex prime who has something real to protect. A real bond. A real claim."
Matt's laugh is wet and humorless. "You're going to kill him."
"Yes. But first…" Frank's hand slides from Matt's nape down his spine, over the swell of his ass, pressing him even harder against the aching column of his cock. "First, I'm going to take care of you. You came here for a reason. You need a knot. You need to be filled and claimed and reminded who you belong to. I'm going to give you that. Right now."
"You can't just kill him. He's not protected anymore, but he's still got the skills. He's still got nothing to lose. If you go after him and miss, he'll vanish and come back twice as hard. You'll be hunting him forever, I'll still be his fixation. The only thing keeping him tethered to anything."
"I won't miss." Frank's thumb traces a slow circle on Matt's tailbone, then dips lower, pressing against the cleft of his ass through the wet, slick-soaked fabric of his trousers. Matt gasps, his hips pushing back into the touch. "And I'm not going anywhere. Whatever it takes. You're not going to be his anything, Red. You're mine."
The word lands between them like a bell tone. Matt's breath catches. His blind eyes search Frank's face, and Frank lets him read every micro-expression, every skip of his pulse. Frank's hand continues its slow, torturous massage, fingers now pressing more firmly into the cleft, finding the soaked fabric that clings to Matt's hole.
"Mine," Frank repeats, quieter. "Not like a thing to be owned. Like a person who chose you a long time ago and was too much of a coward to say it. I'm done running. I'm done pretending I don't want this. I want you, Matt. Not just through your heats. Not just because it's practical. I want to build something with you. Something that lasts. But right now…" he presses his thumb firmly against the place where Matt's hole would be, feeling the ring of muscle flutter desperately even through the layers, "…right now, I want to strip you down, spread you out on this mattress, and give you what you need. I want to bury my face between your thighs and lick you open until you scream. I want to feel your cunt clench around my cock, feel your heat take me so deep I hit that spot that makes you cry. I want to lock my knot inside you and hold you there for hours, pumping you full until it's leaking down your thighs. I want to breed you, Matt, not just for a heat, but for good. I want to put a claiming bite on that gland in your neck so every alpha in the city knows you're taken. Is that what you want?"
Matt's answer is a broken, shattered sob of a word: "Yes."
"You left before." The words are quiet, not accusatory, just... tired. But they're spoken even as Matt's hands are already scrabbling at Frank's jacket, pulling at the zipper. "You left, and I had to grieve you while I was grieving Foggy. Do you know what that was like? To lose my best friend and my…" He stops, swallows, but his fingers don't stop working Frank's clothes open. "And the alpha I'd built my whole stupid heart around, in the same month? To know that Dex killed Foggy, and the one person who might have been able to help me was just…gone? To spend every heat since then alone, with nothing but a cheap silicone knot and your name on my lips?"
The words hit Frank like bullets, each one a small accurate wound. The alpha I'd built my whole stupid heart around. Matt had never called him that before. Not out loud. Not even during their heats, when Frank's knot was locked inside him and Matt was so blissed out on pheromones he could barely speak. But now he's saying it, and he's simultaneously pulling Frank's shirt open, pressing his hot, trembling hands to the scarred skin of Frank's chest.
"I know what I did." Frank's voice is rough as he lets his own hands work, ripping Matt's ruined jacket from his shoulders, popping the buttons of his shirt. The smell of slick intensifies, a dizzying, intoxicating fog. "I know what I am. I was a coward. I ran because I was scared, scared that everything I touched died, scared that if I stayed close to you, you'd end up like Maria. Like the kids. I thought if I was far enough away, the rot wouldn't reach you."
"But it reached me anyway." Matt's voice is barely audible. His chest is bare now, pale and scarred and beautiful, his nipples hard little points that Frank is already lowering his mouth to. "Foggy is dead. I'm being stalked by a psychopath who thinks we're destined for each other. I've been alone for two years, Frank. Two years of running and hiding and grieving, and the only alpha who's been close to me is the one who killed my best friend." Frank's mouth closes on one nipple, and Matt cries out, arching into the wet heat. His hands fly to Frank's head, holding him there. "And every time I…ah!...every time I got close to my heat, I'd imagine you. I'd pretend my fingers were your cock. Pretend the knotting toy was you. I was so desperate I almost, almost let the emptiness drive me to do something stupid, like go looking for any alpha who could fill the void."
Frank growls against Matt's skin, the sound vibrating through his ribs. "There's no void now. I'm going to fill you until you can't remember being empty. I'm going to fuck you so full you'll feel me for days." He drops to his knees, his hands going to Matt's belt, unbuckling it with sharp, efficient movements. Matt's trousers are soaked through, the fabric clinging obscenely to his thighs, the scent of his slick so strong Frank could drown in it. He presses his face to the damp cloth over Matt's cunt, inhaling deeply, and Matt cries out, his hands tangling in Frank's hair, his hips bucking forward.
"Frank…
"Shh, I've got you." Frank's voice is a low, guttural prayer. He tugs the trousers and soaked briefs down, freeing Matt's erection, small and hard and dripping, and exposing the slick, swollen folds of his cunt. The sight makes Frank's mouth water. Matt is drenched, the delicate lips puffy and pink, the entrance fluttering around nothing, a steady stream of slick trailing down his thighs. "Jesus, Red, you're soaked. You've been this wet for hours, haven't you? Trying to hold off. Let me taste."
He doesn't wait for permission. He leans in and runs the flat of his tongue from the base of Matt's cock down through his folds, lapping up the sweet, musky fluid with a groan that rumbles through them both. Matt screams, a high, desperate sound that echoes in the empty gym. His legs nearly give out, but Frank's hands are on his ass, holding him up, spreading him open, tongue delving deeper into his cunt, fucking into him with wet, obscene strokes. He laps at the entrance, licking away the slick as fast as it leaks, then pushes his tongue inside, curling it, tasting the sweet, rich flavor of Matt's heat.
"Frank, please, I can't…"
Frank pulls back just long enough to speak. "I know what you need." He surges to his feet, one hand still working Matt's slick hole, two thick fingers sliding in with an easy, wet squelch. Matt moans, his inner walls clamping down on the intrusion. "You need my knot. You need to be full. You need me to fuck this tight, desperate little cunt until you can't think straight. Say it. Tell me what you need."
"I need your knot," Matt gasps, his hips rocking onto Frank's fingers, fucking himself on them. "Please, Frank, I need you inside me. I need you to fill me. I need to be yours. I've always been yours. Please."
Something in Frank's chest cracks open, and it's not the scaffold this time. It's a dam. He turns them both around and guides Matt down onto the ratty mattress, settling between his spread thighs. He shucks his own pants just enough to free his cock—thick, veined, the knot already starting to swell at the base, the head slick with pre-come. He lines himself up, the blunt head pressing against Matt's soaked entrance. They both groan at the contact.
"Look at me," Frank commands, and Matt's blind eyes find his face unerringly. "You're mine, Matt. I'm never running again. Never leaving you empty again. This is a promise, sealed in my seed and my knot. You understand?"
"Yes," Matt breathes. "Yes, Frank, I understand. Now please, please…"
Frank pushes in. One long, slow, unrelenting thrust that buries him to the hilt in one motion. Matt's back bows off the mattress, a scream tearing from his throat—not of pain, but of overwhelming, purest relief. The wet heat of him is indescribable, a velvet vice that clenches and ripples around Frank's cock, pulling him deeper, milking him. Frank drops his forehead to Matt's, breathing hard, giving Matt a moment to adjust before he begins to move. But Matt is already wrapping his legs around Frank's waist, heels digging into the small of his back, urging him on.
"Move. Move, Frank, I need you to move. Fuck me. Fuck me hard. I've waited so long."
And Frank does. He sets a brutal, punishing pace, his hips snapping forward with the precision of a man who knows exactly what this body needs. Each thrust punches a high, desperate sound from Matt's throat, his cunt fluttering and gripping, his slick coating them both, making the slide obscenely easy. The knot is swelling with every stroke, catching on Matt's rim, stretching wider. Matt's hands scrabble at Frank's back, his shoulders, his neck, finally settling on Frank's face, holding him there as if he's the only anchor in a storm.
"I'm close," Matt gasps, his body tightening, his inner walls starting to spasm. "Knot me. Knot me, Frank, fill me, I need to feel you…"
Frank growls, shoving deep, and with one final, brutal thrust, the knot locks. It swells to full size inside Matt's cunt, sealing them together, and the sudden, immense pressure tips them both over the edge. Matt screams as he climaxes, his body clamping down in rhythmic, vice-like pulses that milk Frank's cock with an agonizing, perfect grip. Frank buries his face in Matt's neck and roars his release, his cock jerking and spurting deep inside, pumping wave after wave of hot, thick seed into the eager, waiting womb of his omega. The orgasm seems to go on forever, drawn out by the knot's unbreakable seal, their bodies locked in the most intimate embrace imaginable.
He doesn't pull out his teeth from Matt's neck until he realizes he's bitten down. A claiming bite, right over the scent gland. He laps at the wound, tasting copper and sweet omega and something that is now and forever Frank Castle's. Matt shudders in his arms, a blissed-out, trembling mess.
"Mine," Frank whispers against the torn skin. "You're mine, and I'm yours."
"Yours," Matt echoes on a broken sigh, fingers tracing the lines of Frank's face. "Always. Don't leave. Please don't leave."
"Never," Frank swears, still pulsing inside him, still locked so deep he can feel the flutter of Matt's orgasm aftershocks. "We're going to end Dex. We're going to end Fisk. And then we're going to build something. Something that lasts. Starting now. Starting with you, full of my knot, wearing my bite. Trust me."
Matt exhales, a long shaky breath that sounds like it's been held for two years. His body sags against the mattress, the last of the tension bleeding out of his shoulders, and for a moment he's just a sated, claimed omega, held by an alpha who smells like safety and pack and home, his cunt still stuffed achingly full.
"I trust you," Matt whispers. "Okay. Okay."