Chapter Text
The thick, heady smell of Alpha pheromones wakes me up. They're familiar pheromones, but for some reason, they're stronger, and they're hitting different. There's a growing lust inside me, and heat spreads through my stomach, an ache throbbing deep inside me. It shouldn't be happening— not from a family member's pheromones but that doesn't stop it from being my current reality. I'm in shock, disbelief, because I know what this all means— I'm awakening as an Omega.
It's a bit of a late awakening, it usually happens around mid to late puberty and I'm already seventeen, almost eighteen. I thought I would be a Beta and lead an uneventful life, but here I was getting turned on by my dad's Alpha pheromones. They were thick, deep, and masculine, and I was leaking slick for the first time, my ass already soaking wet from preparing itself for an Alpha cock. The ache inside me was growing stronger, becoming unbearable. I whine, squirming in my bed, my tiny prick already hard. I should have known I was an Omega, but I had grown more lax as each year passed since I turned thirteen and I hadn't presented.
Unable to bear it, I climb out of my bed on shaky feet, leaving my room and following the scent of Alpha pheromones. It had been just the two of us since my mom died when I was still a toddler— no siblings, no step-mother or step-father, just me and my dad. And now here I was lusting after his cock like a horny slut, but I couldn't help it. He was the pinnacle of what a traditional Alpha looked like, smelled like. There was no better Alpha than my dad. Somewhere deep inside of me throbbed— my womb, probably— demanding the seed of a strong Alpha.
I shouldn't be reacting to his pheromones but I was, and I was helpless to stop my reaction or my trek to his bedroom, where the scent of his pheromones only grew thicker. More slick gushes between my thighs from my hole and my hole twitches with a fierce need. My mouth was dry, the strong Alpha smell almost having my eyes rolling to the back of my head. I needed to smell it from up close.
I push open the door to my dad's room without knocking, too lust-drunk to be polite and have good manners. And the sight I was greeted with had me drooling like a filthy whore. My dad was naked from the waist down, his thick, manly Alpha cock grasped between his two meaty hands as he stroked himself, grunting in pleasure.
Fuck. He was huge, I had never seen a dick that big before, not even in any of the porn I watched. My hole contracts around air, my brain already imagining that giant monster wrecking my boypussy, knocking me up with his virile sperm. A moan escapes me and his eyes snap to meet mine.
"Peter?" He calls out, confusion lacing his tone but he doesn't stop jerking himself. My gaze falls back to his cock, my tongue coming out to lick at my lips. It would probably barely fit in my mouth, but I still feel a desire to try. I shuffle forward, suddenly shy under the weight of his gaze.
"Daddy," I whine, my own cock twitching with interest at the sight before me. "'m an Omega."
"Oh," he says slowly. "Oh," A grin slides across his lips. "Were you needing this?" He gestures to his ginormous prick and I nod feverishly, moaning like a desperate slut. I'm so wet, and more slick leaks down my thighs. I'm wearing only an oversized t-shirt, having stripped off my wet sweats and briefs back in my own room.
"C'mere, Petey," He beckons me and I'm helpless to follow his siren call. "Let a real, big, strong Alpha like me help you through your heat."
I climb onto the bed next to him and he guides me until my face is in front of his intimidating cock.
"First, you gotta get a good taste of the Alpha cock that's going to take your Omega virginity," Daddy coaxes, and I nod, giving his cock a kittenish lick. "I'll let you go at your own pace to start since this is your first time with an Alpha's cock."
I suck at the head of his cock, trying to push it into my mouth but it's so thick and wide, I can barely slot my mouth around it. Tears form in my eyes as I struggle and try to put it more than an inch into my small little mouth.
"Daddy," I whine again. "Help me, please?" I beg and he sighs, placing his large hands on my head, tangling his fingers in my shaggy hair.
"Brace yourself, Peter," Daddy warns. "I won't be able to be very gentle once we start."
I shiver at his tone, arousal rolling through me in strong waves. I just give me an encouraging nod. He smirks before he begins to push and pull my head down his unfathomable length, sinking deeper into my mouth inch by inch until I'm practically choking on him when he's only about halfway in.
"Loosen your throat, Petey," he commands and I do my best to comply. "I'm going to fuck your throat and I want you to imagine I'm fucking your slutty virgin boycunt."
"Yes, Daddy," I slur out from between his cock. "I will."
He doesn't give me much time before he is slamming his cock further into my mouth, pushing into my throat. As an awakening Omega, my gag reflex is now practically non-existent but I still feel like I'm gagging and choking around his giant dick. My cock leaks precum and my hole leaks more slick because I like it. I like being used like this, like nothing more than Daddy's toy.
As he fucks my throat ruthlessly, bruising my esophagus, one of his hands trails down my body to my sopping wet boypussy, pushing a finger inside and lazily stroking in and out of my hole. I moan and clench around him. Even just one finger feels so amazingly good, how good will it feel to have his huge cock spreading me open, pounding into me like he's pounding my throat?
"I'm gonna dump my cum down your throat and then fuck you so full of cum, there's no way you won't be pregnant," Daddy says and I moan wantonly. "And I'll fuck you silly even when you're belly's round and bulging with our babies, till you can't think about anything other than being my good little cockslut."
His thick taste spurts down my throat, over my tongue and overflows out my mouth but I do my best to swallow it all down, moaning at the taste. It's so good, I want more. I want it inside me, I want it stuffed into my womb, knocking me up, impregnating me. I know it's wrong, but I don't care. I've always loved my dad, and I want to have his babies. I've wanted it for a while but had been too scared to be honest with myself.
Daddy pushes me onto my back on his bed, settling his still hard cock between my thighs. I moan at the sight of him there, about to take me and use me like nothing more than a cocksleeve, a fleshlight.
"Fuck me, Daddy!" I cry out, trying to get him inside me sooner rather than later. His huge cockhead knocks against my entrance, the tip teasing my wet hole. Daddy grabs my hips and thrusts me down onto his cock as hard as he can, forcing my walls open and spreading me wide. Even with my heat numbing my brain and turning pain into pleasure, my stomach aches from having my Daddy's cock inside me, his cockhead pressing against my navel. He's so big my stomach is bulging and he didn't even fit himself all inside in that one thrust.
I choke out another moan as he pushes himself in the last few inches, shoving deeper into my intestines. I can feel him pressing against my newly formed womb, and my womb kisses the tip of his cock with greed, begging for his Alpha cum.
"Such a good boy," Daddy cooes. "Taking Daddy's cock like you were born for it, born to be a cocksleeve for your Daddy, born for me to knock you up with babies over and over again like the useless Omega slut you are."
Tears cloud my eyes as he begins to thrust inside me, slowly at first but he's quickly picking up his pace. I can't even speak, too lost in the pleasure and unable to form coherent words. All I can do is moan like the slut we both know I now am as an Omega.
"Yes," I manage to slur out, drunk on lust. "Yes!"
He hooks my legs over his shoulders, pounding into me ruthlessly, not letting up. I can both see and feel clearly every time his cock is buried from the way my stomach bulges up to the base of the center of my ribs.
"You're so tight around Daddy," he continues. "So wet but perfectly tight as a good fuckhole should be. This boycunt belongs to me now, whenever and wherever I want, it's mine, mine to fuck and breed. You're mine." He snarls, leaning down to lick at my neck near my mating gland. A whole body shiver runs through me and I clench even tighter around his dick. Fuck, is he going to mate me? For real?
I want him to, I want him to so, so bad. I wanna belong to Daddy. I want to be his. I want him to own me, to possess me, to fuck me whenever he wants, wherever he wants. I want him to breed me over and over again and use me as his baby maker. I want it all, everything that he wants, I want it.
His teeth nip at my throat, teasing.
"I'm going to make you mine, make it so no other Alpha will ever have this slutty boypussy," he growls, his face still near my neck, near my mating gland. "You'll be mine and only mine, Peter."
"Please, Daddy!" I beg, baring my throat to him in complete submission. I already belong to him, heart and soul. I will gladly give him my body too.
His fangs sink into my neck and I howl from the insane mix of pain and pleasure as the mating mark bonds us together forever. I cum as he marks me, my ass clenching around his thick cock while my prick shoots off tiny spurts of cum— a pathetic amount, because as an Omega, my cock isn't what's important.
Daddy sinks deep into me over and over again, fucking me into overstimulation while I mewl and cry, but I don't beg him to stop. I don't want him to stop. I exist for his pleasure, I'm his Omega now. He can use me as he pleases and I'll be happy.
"Such a good slut," Daddy purrs, flipping me over onto my stomach and fucking me even harder. "Your hole is so good, it's gonna make Daddy cum. I'm gonna flood your hole with so much cum, your belly will swell from it and I'm going to knot you as many times as it takes to get you pregnant with my babies," he chuckles darkly. "They'll be both my children and grandchildren. Isn't that right, son?"
I nod, his words hardly registering in my lust-clouded brain. All I care about is his cumming inside me, knocking me up like he promised. I want it— I need it. As his Omega, it's my duty to have my Alpha's babies and I will make sure I complete it— as many times as Daddy wants.
"I can't wait to see your breasts swell with milk," Daddy muses, pinching my nipples. "I bet you'll leak milk when you're horny, like you're just begging me to fuck you, knock you up with another baby. Are you ready for my knot, Petey?"
"Yes, Daddy!" I moan loudly into the pillows and sheets around me.
"Take it, bitch!" He yells, thrusting deep inside me. His cock starts to jump with his cum, his thick, manly seed pouring into me over and over again. I can feel him filling me. I can feel his knot forming at the base of his cock, and my hole stretches further as he begins to force it inside me, pushing me to my limits.
Even with my heat, even with all the wet slick, it hurts, but my heat turns even that pain into pleasure. My rim stretches wide as his knot begins to sink further inside me, until the whole knot is seated inside me, my hole closing tight around the base of the knot.
"Fuck, that feels good, Petey. Such a good whore, taking my whole knot like a champ. We'll get you pregnant in no time like this. I can't wait to see your belly swell up like it is now," he rubs my belly, swollen slightly from his first large load. "But with my babies and not just my cum."
"Me too, Daddy," I whine, moaning when he shifts inside me. "I want that."
"Be prepared for round two, stupid slut. We gotta make sure my seed takes, I gotta fuck that slutty womb of yours, knock it up with my sperm." Daddy growls. I just moan my approval.
He fucked me three— no, four? five?— more times that night and many more times throughout the rest of my heat until I was positively pregnant.
I was gonna have my Daddy's babies, and I couldn't be happier.