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Izuku knew he was destined to die, he had been the day he was born. His whole existence was based on borrowed time. His mother had once been a beautiful oracle, one that had been trusted and relied on for most of her life. That is until the fickle god of fortune and oracles has his feelings hurt.
As a result Izuku had been born. His mother had tried her best to protect him but his beauty was that of his father’s. He was doomed because of it. His father on the other hand refused to look at him, refused to acknowledge his existence once he clipped Inko of her blessing.
So, as a result Izuku’s luck has always been an extreme. First he had been found by the king, who had no qualms of showering Inko in gold if Izuku listened to him. And this worked for the first few years, Izuku just had to throw away his self respect but was happy when his mom was doing good.
And like anything half way good in Izuku’s life his luck ran dry. The king had heard through the grapevine Izuku was flirting with the young hero that was supposed to be just passing by. In a fit of rage and jealousy the king sliced the hero in half while he slept and the next the king confronted Izuku.
The king refused to listen to his young boy wife when Izuku screamed that he wasn’t at fault. That the man had forced himself onto Izuku, had taken Izuku by force! That Izuku had begged for him to stop but he didn’t and that was why Izuku had been avoiding him and the hero for the last day and a half. Regardless the king saw it as Izuku’s fault, his betrayal.
The king held Izuku for almost half a month, knowing his pet would be nearing his rut nearly the same time Izuku would be going into heat. In this time the king held Izuku in his room, though had removed everything asides from his bed. Essentially putting him on house arrest to just his room. Even though Izuku knew what was in store for him, he continued to pray to his father. Not for himself but for his mother’s safety.
“I know what will happen to me, but please protect my mother from his wrath,” Izuku prayed nightly. He offered the little food he was given to his father as an offering, a plead. He was unsure if the god had heard his pleas until his last morning.
Izuku woke in a sheen of sweat, body burning and hot. His heat had come sooner in the day than it usually did. But it wasn’t that that woke him, but a stinging sensation over his lower stomach.
There he found it. An insignia, a crest of fertility over his womb. An upside down heart with vines curling from either side. Even in his foggy state he knew to cover it, to keep the king from seeing it.
“Bore an heir for the beast and it shall be what sets you free,” a voice mused at the back of his mind. “Be not afraid as the beast devours you from the inside out, as he shall be enamored and become loyal to only you.”
Izuku silently wept as he pulled his chiton on, with clumsy fingers tying the thin golden cord around his center. His father had finally answered him, finally acknowledged him. Izuku had longed for the god that his mother was still loyal to even through her hardships.
He rested his palms over his lower stomach, he could feel it. The call, the beckoning to be filled, to carry life. As soon as his door creaked he dropped his hands to his sides, balling his fists as he met those cold icy teal eyes.
“Come whore, let’s see if my pet forgives you when you weep,” Touya crossed his arms, his words had always been cruel but the blade had rarely been pointed at him directly. Izuku gritted his teeth, keeping his shoulders back even as slick coated his thighs. The alpha could smell it, the need and desire, the lust and carnal need.
“I am guilty of nothing,” Izuku’s words only had the slightest tremble, body becoming harder to control as the heat dug it’d claws into him.
“The last thing that bastard uttered was your name,” Touya snarled before snapping his fingers. Two guards stepping past their king and yanking hold of Izuku’s arms hard enough to bruise. “I’m surprised that you did go into heat, figured you were carrying the bastard’s heir already.”
Izuku gritted his teeth hard enough his jaw ached as he refused to try and defend himself to deaf ears. Touya turned and the guards dragged Izuku behind their king. Izuku knew the bastard would have people there, witness a concubine being punished was something the elite got off to. There Keigo was in his fancy clothing, rubbing at his pregnant stomach with a smirk. Happy to see off one of his husband’s whores while carrying a proper heir.
There was no allegiance between them simply because they both were male omegas. No, Izuku didn’t try to believe a lie like that. Keigo had disdain for him, barely hid it in the last three years. But Izuku knew he wasn’t the first young male omega Touya had taken in. Rumor spun in the shadows of the castle that the beast that laid in the lower cavern was a byproduct of one of his younger omegas. An omega that had died in delivery. As That Omega had been one of his favorite playthings he kept the beast but had thrown him into the underground labyrinth.
“Farewell,” Keigo chuckled when Izuku was shoved past him. Touya smiled wickedly as he threw open the door that lead down to the labyrinth.
“Let the gods show you the mercy you deserve,” Touya announced as if he were ushered by a god his lines. With that the guards threw him into the darkness that waited below.
Dim torches sat on the walls, enough distance between each that it left a few feet of darkness. Izuku’s heart fluttered in his chest like a bird beating against its cage. He gripped the front of his chiton so tightly his knuckles whitened and ached, but it was enough to keep him anchored, to keep him moving forward. It was a lot cooler and damper down here and it almost worked to soothe his heat.
He could hear thumping and movement deep in the labyrinth but he repeated his father’s word. He had to face the beast. The monster of Musutafu.
A pained groan escaped Izuku as his gut clenched tightly, a gush of slick seeping from him. At this point he leaned against the cool earth wall, head spinning as his gut felt heavy. His breathing had become labored, his body begging and pleading to stop and rest.
Izuku inhaled deeply and held his breathe for a moment before he exhaled hard and pushed himself from the wall. He had to go further. He knew if he wasn’t the one to meet the bull, the bull would only see him as meal to sate his need. Izuku had to prove himself. He’d heard the rumors among the staff, the stuff of nightmares.
The beast was supposed to be ugly, a nightmare to behold. Half human and half bull, though from the sounds of it he was a complete beast. More monster than human. A face and chest of a human, but everything past the waist was that of a bull but he walked on hind legs.
Izuku forced himself to repeat the god’s words, preparing himself for a terrifying monster. Preparing for the worst results he could imagine. That the god was tricking him, that the beast would tear him to shreds for his amusement and maybe allow him to birth whatever creature spawned as punishment for asking for help.
Izuku grasped the wall as the tunnel opened into a large chamber, it had to be the same size as the whole castle. The light that illuminated the chamber was soft and dim, like wisps had been captured and contained. Everything inside had an ethereal glow.
There was a small pool of water in the center of the room, fed by a thin gurgling stream that came from a far wall. The water glowed and beckoned Izuku, promising a cool repose. Suddenly his throat and mouth felt dry and full of cotton, as if he was dehydrated and needed the water or he’d die.
Izuku stumbled forward, pulling the cord just as clumsily as he’d tied it. His body finally starting to cool off as he pulled the chiton from his sweaty body. His body froze as it knelt in front of the pool, in the surface he saw himself. His curls a mess, his face flush and dark even in the reflection but it wasn’t only his reflection he saw, but the beast. He saw his broad chest, human like as the muscle moved under the tone skin, a thick neck with a jutting vein.
The stories were wrong. Completely wrong. His face was the most handsome face Izuku had ever witnessed. Angular and strong jaw, sharp cheeks and ruby red eyes that glowed even in the pool’s reflection. And for being a beast stuck in the darkness with very little he had clean though unruly blond hair. But his status as a beast was reminded to Izuku as he saw the midnight black horns that jutted out from his hair, a silver piercing at his nose, a bull’s ring.
Izuku didn’t flinch but moved slowly, looking over his shoulder but the beast wasn’t there. He could hear him though. It was as if the beast was pacing back and forth, Izuku could feel his gaze hot on his body. A low grumbling, snorting as if the beast was deciding what to do.
“Hello,” Izuku managed to find his voice and call out. The moment his voice filled the chamber the pacing and grumbling silenced. “I know you’re there…”
The silence grew heavy as if daring to make Izuku start questioning himself. Had his heat made him go mad? Is he losing himself to the darkness?
“Why! You…small,” The beast snorted, growled, snarled. Was the beast angry at Izuku or his father? Was he angry for Izuku? “Small…pretty…”
Izuku bit the inside of his cheek, he knew his flush was darkening at the beast’s words. It was clear the beast didn’t speak often, learning how to communicate by mimicking the words of the humans that had been thrown down here. His voice was low, guttural and rumbly. It stirred something inside of Izuku.
“Can…can you stand where I can see you?” Izuku asked softly, his body was aching again. His cunt sore and sensitive to the cool air touching it. Izuku knew his scent had to be filling the chamber as his heat burned. As the fertility symbol tingled.
A low growl rumbled through the chamber, followed by a sharp reply, “No. human…will be…scared.”
Izuku swallowed, forcing his breathing to stay even and calm. To not reflect his body’s reactions. This beast…was it possible for a human and beast to be fated mates? Izuku hadn’t seen his true face, the reflection might be an illusion and yet he felt such a primal pull towards him.
“I won’t be scared, I promise,” Izuku held a hand towards where the beast’s voice came from.
“Promise,” he echoed, unsure of the word or its meaning.
“I won’t be scared, come to me,” Izuku softly repeated as he moved his whole body to face the beast. He heard the creature inhale deeply, followed by a rumble that was either a growl of frustration or a purr to try and calm the omega.
“You are tiny…you will be scared,” He grunted annoyed. Izuku closed his eyes, it was becoming harder to form sentences, hard to convince the beast to come to him.
“What is your name?” Izuku blurted, he needed to ground himself.
“Name?” He repeated. Had Touya not even name the beast he had sired?
“What do you call yourself?” Izuku rephrased the question, “My name is Izuku.”
“Call myself,” He mused. A moment later he softly mused, “Izuku?”
“That’s what you call me, Izuku,” Izuku softly giggled, bitting his lip. He thought of his father’s words. The beast would save him, be his salvation. “Katsuki. Your name should be Katsuki.”
The beast softly snorted, softly stomping a hoof. “Katsuki,” He repeated, “yes. Katsuki. Call me Katsuki.”
Izuku bit back a soft giggle, for being a beast he sounded cute. Sounded almost innocent but Izuku knew that wasn’t the case…that those onyx black horns were stain in gore, those teeth had devoured human flesh.
“Katsuki, please…I want to see you,” Izuku swallowed hard, one of his hands dropping to his lap. His heat was only becoming stronger, needier with each passing minute.
The beast softly stomped the ground, slight pacing mixed with that deep breathing. He was scenting the air, he could smell Izuku’s lust and it wasn’t the first time he’d smelled an omega’s sweet scent in heat…but it was the first time that it affected him.
“Promise…you won’t be scared,” Katsuki finally stopped pacing.
“I promise,” Izuku quickly replied, his hand sliding over his cunt. He could feel the heat coming from his cunt, the slick staining his fingertips.
Katsuki stood still for a moment longer before the steps came closer. Closer. Then there he was. The reflecting pool hadn’t deceived him, Katsuki was sculpted by the gods themselves.
But it didn’t reveal his bottom half. Izuku inhaled sharply as he let his gaze drift down. Katsuki was easily eight feet tall without counting his foot long horns. His waist down was like a bull’s, muscle thighs with the legs that bent at an inhuman way. Shiny black hooves that matched his horns, and velvety dark gray hair covered his beastly half. A smooth tail with a tuft of dark golden blond hair swished behind his legs.
What took Izuku’s breath away was how his groin was so…immodest? It sat the way a bull’s would, his cock hidden in a sheath but his balls hung low and heavy between his thighs. A true alpha.
Izuku shuddered, slick gushing between his fingers as they found themselves pushing inside of his pink cunt. Beast or not, Katsuki was an alpha. A strong and healthy alpha that sung to Izuku’s inner omega.
“You’re…not afraid?” Katsuki sounded surprised.
Izuku let out a moan as he spread his legs, spread his sticky cunt. “I am the opposite of afraid…I’m…I need you.”
Even still so far away from each other Izuku could see those beautiful ruby eyes darken as his pupils grew. His nostrils flaring as he breathed Izuku in. Izuku’s cunt squeezed around his fingers as he saw the beast’s cock poking from its sheath, the fat blunt head.
Katsuki stomped the ground and stepped closer. But not allowing himself to get too close. If…if Izuku wasn’t mistaken he’d believe that the beast, no- Katsuki, was afraid to get too close. That he’d follow his instincts and end up hurting Izuku.
“Tiny. You are tiny…hurt, I’ll hurt tiny Izuku,” Katsuki shook his head, those ruby eyes flashing more emotion than a beast could convey. In that moment Izuku realized that it couldn’t have been Touya that sired him, as much as the alpha believed. One of the gods had to have done it.
Katsuki wasn’t a blood thirsty beast of nightmares but a breathtakingly loving warrior of those that have been damned.
“You won’t hurt me,” Izuku whimpered, fingers brushing against his clit. “Katsuki, you can feel it too, can’t you? The draw, the pull. I can handle everything you give me. I’m yours.”
Katsuki stopped fidgeting, watching Izuku, listening to the beautiful maiden. A shudder ran through the bull before he stepped closer and closer. Izuku couldn’t help it, rubbing his clit faster and harder, watching not the beast but his mate come closer. Watched as Katsuki moved to his hands and knees before the human.
Izuku nearly fell back as Katsuki moved between his legs, the heat and scent of the beast going straight to Izuku’s core. Katsuki grasped Izuku by the thighs and dragged his bottom half up high to meet his mouth. The omega’s eyes rolled back as he felt Katsuki’s tongue lap at his cunt. Katsuki’s tongue was thick and fat, and very, very long.
“Oh gods,” Izuku moaned as the beast pushed his mouth against Izuku’s cunt. It was clear he had never done this before but Izuku’s slick had awoken something deep and primal inside of Katsuki. The grunts and huffs coming from Katsuki was animal like, his tongue pushing and curling deep inside of Izuku as the bull’s hands held Izuku’s thighs open.
Izuku managed to reach up, grasping those deadly horns. Katsuki’s gaze flicked up to Izuku, dark and burning. It set Izuku on fire from the inside out. He gripped onto those horns as the beast ate his cunt, it was mind numbing as that tongue brushed against Izuku’s cervix.
“Ohh, Katsuki! So good! I’m going cum,” Izuku moaned, hips grinding the best they could in Katsuki’s hands. If it was possible Katsuki pushed his mouth against Izuku’s cunt harder, his tongue pushing against his cervix. His whole vision darkened as he came harder than he had ever came with Touya. He barely remembered the hateful king’s name.
Katsuki slurped and swallowed every last drop of Izuku’s slick. As he pulled his mouth away Izuku could see the beast. He was…he was in rut because of Izuku’s slick.
Katsuki’s pupils were blown wide as his hands glided from Izuku’s thighs to his hip, lowering Izuku just enough. Izuku came to as he felt the heat rolling off Katsuki’s cock that now laid against his slick covered cunt and came up a little past his belly button. Lust and fear made Izuku look down at the massive cock. It wasn’t just long, it was thick, thick as Izuku’s arm. And it was to fit in Izuku?
“Izuku,” Katsuki panted, grinding his cock against Izuku’s sensitive cunt. “Mine…mine! Izuku is mine!”
“All yours,” Izuku panted between moans, reaching up to cup Katsuki’s face. Katsuki looked so human, like a man in love, a man enamored with his lover.
“I…don’t want to…break Izuku,” Katsuki admitted quietly.
“You won’t,” Izuku promised as he dropped his hands to the bull’s cock. Katsuki growled as Izuku rubbed at his cock head, he could feel the beading of precum seeping from the beast’s cock. “I can take this. I can take you. Do not worry, just take me.”
Katsuki licked his slick covered lips before he nodded, he leaned back. Izuku watched as he was pulled back too, cock sliding across his body, across his cunt. Izuku moaned and shuddered as the head pushed and teased at his cunt. It was almost too thick to even push inside, but Katsuki had worked Izuku open with his tongue, had gotten Izuku all wet and soft.
With one hard thrust Katsuki was able to push his cock inside of Izuku. The moment his cock was inside of Izuku any rational thought to be gentle flew from his mind. Izuku arched back as the cock barreled inside, pushing past even his cervix and easily into his womb. Izuku came hard from just being penetrated by the beast’s cock.
Katsuki’s grip on the boy’s hips tightened, almost threatening to break as he lurched forward. Izuku saw stars as the beast’s teeth buried themselves in Izuku’s shoulder as his thrusts were the definition of feral and rough. Izuku couldn’t possibly think or say anything other than Katsuki’s name, he was at the bull’s mercy.
Nothing could compare to this, sex with your fated mate. Effectively Izuku forgot everyone else that he’d shared a bed with as Katsuki’s cock stirred his guts up. Izuku couldn’t look but knew his stomach had to be bulging where the beast fucked him over and over.
“Mine, mine, mine,” Katsuki snarled between bites. His teeth finding a new spot to scar and bruise. Izuku had lost count of how many times he came, his cunt clamping down and wringing around that thick monstrous cock even as it continued to hit the deepest parts of his cunt.
Izuku thought he was going to die as the bull’s cock throbbed, only warning before a thick wave of hot cum poured inside of his womb. His nails dug into the very human like skin of Katsuki’s back as he clung to his mate. Katsuki’s thrusts had stopped as he kept his cock buried inside of Izuku’s womb. Izuku withered under Katsuki as his womb was forced to stretch and stretch, almost already as big as it should be when he was carrying their child but it was all because of just his cum.
Katsuki found Izuku’s mouth, kissing needily, pushing his tongue inside of Izuku’s mouth. Izuku wasn’t able to fight, his mouth opening for Katsuki’s. He could taste himself on Katsuki’s tongue. Maybe if he wasn’t fucked out of his mind Izuku would feel embarrassed from tasting himself.
When Katsuki finally pulled out he watched Izuku’s swollen cunt ooze and bubble with a gush of cum. He glanced up and saw how limp the human was and for a moment he worried he killed the human.
“See…I told you…I could take ever-everything,” Izuku panted with a tired smile. He knew it already, that the beast, that his alpha, that his Katsuki had bred him, had put a baby inside of him.
Katsuki leaned down, softly kissing the bloody spots he’d made on his tiny mate. Katsuki fucked him one more time before Izuku succumbed to exhaustion and sleep. He was surprised to wake laying on top of the beast but it gave him the opportunity to ride the beast’s cock, waking Katsuki that way had pushed Katsuki into another rut. Izuku had been pinned to the ground faster than he could realize. He was fucked standing up next which was terrifying as Izuku couldn’t touch the ground and had to grip Katsuki’s shoulders.
Izuku lost count of the days as they fucked on and off, Katsuki had gently washed his mate’s body with the cool stream water that ran out of the pool. In his broken human speech Katsuki explained that they couldn’t go into the pool. That it was a reflecting mirror, showing them both what was going on within the castle.
Izuku was mortified when he accidentally opened the mirror in time to see Touya and Keigo sitting and watching as Inko was killed. Izuku was inconsolable as he sobbed into Katsuki, clinging to his mate as he mourned his mother. He hadn’t gotten the chance to talk to her, to tell her he had heard his father’s voice. To tell her he had found his mate, that he was already carrying their pup.
It was shortly after that event that Izuku lead Katsuki to the doors of the labyrinth. Touya had lived comfortably thinking the beast couldn’t find his way to the door, believed that the beast couldn’t make the door into splitters if he did find the door. Izuku looked like a revengeful goddess with her loyal consort, Katsuki listening to every word that left Izuku’s lips.
Katsuki gored and maimed anyone that dared raise a hand towards Izuku. Izuku found Touya and Keigo in their room, as if they could hide from Izuku and his warrior, his mate. Touya showed how truly cowardly he was as he threw the heavily pregnant Keigo in front of them.
Izuku held up a hand, keeping Katsuki from killing the terrified pregnant omega.
“Please! Please don’t kill me! I am sorry! I was truly awful and cruel,” Keigo sobbed, shaking his head as he met the much younger omega’s gaze. “Please, I will do anything if you spare me and my child.”
Izuku watched the older omega shake and sob, clutching his stomach.
“Katsuki, don’t touch the omega,” Izuku finally said softly. His gaze cutting to Touya’s, “You on the other hand will get what you deserve. Let the gods show you the mercy you deserve.”
Katsuki’s lips tilted up as he charged towards the alpha, horns directed at the bastard’s body. Katsuki impaled Touya on those beautiful and deadly horns.
It wasn’t long after they took the castle that Izuku was properly recognized by his father, letting Izuku ascend to become the goddess of fertility with her loyal consort and lover being the image that pregnant omegas wore to ward evil. Their eldest child becoming the symbol of healthy babies, stitched into baby blankets and clothing to ensure newborns would grow to become healthy and strong.