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The air, thick and sweet with the scent of old wood and something metallic, clung to Izuku’s tongue. His head throbbed, a dull drumbeat against his skull, and the world spun in a dizzying kaleidoscope of muted colors. He pushed himself up, a groan catching in his throat. The floorboards beneath him felt smooth, polished, not the rough concrete of the UA dorms. A quick glance confirmed it: this wasn’t his room. Or anyone’s room he recognized. High, arched windows, draped in heavy, crimson velvet, overlooked a landscape he’d never seen—a dense, ancient forest stretching to a bruised purple horizon.
A grunt, sharp and familiar, cut through the quiet. Katsuki Bakugo, sprawled on an ornate rug a few feet away, was already pushing himself to his feet, eyes narrowed, scanning the unfamiliar surroundings. His uniform was rumpled, a stark contrast to his usual pristine appearance.
“Deku?” Bakugo’s voice, rough with sleep and suspicion, sliced through the quiet. He took a step, then stumbled, catching himself on a heavy wooden table. “What the hell is this place? Where are we?”
Izuku tried to activate One For All, the familiar surge of power he usually commanded, but found only a hollow emptiness. Panic, cold and sharp, seized him. He flexed his fingers, concentrated, but nothing. His quirk was gone.
“My… my quirk,” Izuku whispered, his voice cracking. “It’s not there, Kacchan.”
Bakugo’s eyes, usually blazing with explosive energy, now held a flicker of genuine alarm. He slammed a fist against the wall, a dull thud echoing in the large room. “Mine too. Damn it! Who…?” He spun, eyes darting to the windows, to the heavy, iron-bound door. “Some goddamn villain. That’s what this is.”
The room was vast, furnished with dark, heavy pieces. A grand fireplace, cold and empty, dominated one wall. Bookshelves, taller than Izuku, lined another, filled with leather-bound tomes. Dust motes danced in the shafts of light piercing the velvet drapes. A strange, almost floral scent, subtle but insistent, began to prickle at Izuku’s senses.
Bakugo strode to the windows, yanking the heavy drapes aside. Outside, the forest seemed to press in, a wall of ancient, gnarled trees. No road, no distant lights, just endless green and shadow. He tried the window. Locked. Sealed tight. He put his shoulder into it, a grunt of effort, but the frame held firm.
“Reinforced glass,” Bakugo growled, turning back to the room. “No goddamn way out.” He marched to the door, a massive slab of dark wood with an intricate, almost alien, lock mechanism. He tried the handle. It didn’t budge. He kicked it, once, twice, the heavy impact reverberating through the room. The door remained impassive.
A voice, smooth as polished obsidian, echoed from unseen speakers. “Welcome, young heroes. I trust your accommodations are… satisfactory.” The voice held an almost theatrical lilt, devoid of any discernible emotion. “You may look outside, you may try the doors, but you will not leave. Not yet.”
Izuku’s heart hammered against his ribs. He felt a primal dread, a cold knot forming in his stomach. “Who are you? What do you want?”
The voice chuckled, a dry, rustling sound. “Such impatience. All in good time, Midoriya. For now, understand this: your quirks are suppressed. Your physical bodies are… altered. Bakugo, you are now an Alpha. Midoriya, you are an Omega.”
Izuku’s breath hitched. Alpha? Omega? The terms, usually reserved for archaic biological classifications or niche fiction, felt alien, terrifying. He glanced at Bakugo, whose jaw had clenched so tight his muscles corded. Bakugo’s eyes, wide with disbelief, met his. A new scent, sharp and undeniably masculine, began to emanate from Bakugo, cutting through the general sweetness of the room. It was… powerful. Overwhelming.
“What the hell are you talking about?!” Bakugo roared, his voice shaking with a rage that had nowhere to go. “An Alpha? A goddamn Omega? You think this is some kind of joke?!”
“No joke, Bakugo,” the voice responded, its tone unwavering. “It is your new reality. The only way out of this house, the only way to regain your freedom, is for Midoriya to become pregnant. With your child.”
Silence descended, heavy and suffocating. Izuku felt the blood drain from his face. Pregnant? With Kacchan’s child? The words were a physical blow, stealing his breath, blurring his vision. He stumbled back, his hand flying to his stomach, a protective, instinctual gesture.
Bakugo froze, his explosive rage replaced by a stunned, horrifying stillness. His eyes, fixed on Izuku, were unreadable. The air between them crackled with an unspoken horror.
“You’re insane,” Bakugo finally spat, his voice a low, dangerous growl. “You think we’ll just… what? Play along with your twisted fantasy? We’re heroes! We’ll find a way out, and then we’ll crush you!”
“You will adapt,” the voice replied, a hint of something like amusement now present. “Or you will remain here, indefinitely. The choice is yours. Consider your options. Food, water, and all other necessities will be provided. But the comforts of this home are tied to… your cooperation.”
The voice faded, leaving them in the oppressive quiet. Izuku could feel the heat radiating from Bakugo, the raw, aggressive scent of him filling the space. It was a scent that, despite the horror of the situation, pulled at something deep within Izuku, a strange, instinctual hum that made his skin tingle. He hated it. He hated all of it.
“This is a nightmare,” Izuku whispered, his voice trembling. He hugged himself, trying to ward off the sudden chill that had nothing to do with the room’s temperature.
Bakugo turned, his gaze sweeping over Izuku, a mix of disgust, confusion, and something else Izuku couldn’t quite decipher. “Pregnant? You? With *my* kid?” His voice was incredulous, laced with a bitter irony. “That damn villain… they want to break us.”
The first few weeks were a blur of frantic searching and desperate attempts. They tore through the house, pulling at every panel, testing every brick. They found a kitchen, inexplicably stocked with fresh food, and bathrooms that provided hot water. But every door led to another locked passage, every window showed the same impenetrable forest. Their efforts were met with silence, the villain a ghost, their presence only felt through the constant, unsettling awareness of their new biological realities.
Izuku found himself increasingly sensitive to Bakugo’s presence. The Alpha scent, initially overwhelming, became a constant, almost comforting hum in the background. His own body felt… different. Softer, perhaps. His emotions, usually a carefully controlled torrent, felt closer to the surface. He found himself watching Bakugo, not with fear, but with a strange, nascent curiosity he couldn’t suppress.
Bakugo, for his part, was a storm of contained fury. He paced, he muttered, he punched walls until his knuckles bled. He refused to acknowledge the shifts in their bodies, the way his own senses sharpened, the way Izuku’s scent, a subtle sweetness that had always been there, now carried a distinct, alluring undertone. He avoided Izuku’s gaze, his movements stiff, his face a mask of barely controlled aggression.
One evening, after another failed attempt to pry open a hidden door, Bakugo collapsed onto a plush armchair, exhaustion etched on his face. He hadn't eaten much, his usual boundless energy slowly dwindling.
“This is useless,” Bakugo rasped, running a hand through his perpetually spiky hair. “They’re not letting us out. Not this way.”
Izuku, sitting on the floor across from him, picked at a loose thread on the rug. “We can’t just… stay here forever, Kacchan.”
“What do you want me to do, Deku?” Bakugo snapped, his eyes flashing. “You want me to just… do what that sicko wants? Turn into some goddamn broodmare for a villain’s entertainment?”
Izuku flinched, the word stinging. “No! Of course not. But… what if it’s the only way? We’re heroes, Kacchan. What kind of heroes let themselves be trapped forever just because… because we’re scared?”
Bakugo scoffed, a humorless sound. “Scared? I’m not scared, Deku. I’m disgusted. This is… this is a violation.”
“I know it is,” Izuku said, his voice soft, almost a whisper. “But… we have to think about what’s at stake. Our lives. Our future. The people outside… they’ll be wondering where we are.”
A week later, the amenities began to dwindle. The hot water turned cold. The fresh food in the kitchen began to spoil, replaced by dry, tasteless rations. The lights flickered, growing dimmer. The house, once merely a prison, now felt actively hostile.
Bakugo stared at the flickering bulb in the main living area, his face grim. “They’re cutting us off,” he stated, his voice flat. “They’re trying to force our hand.”
Izuku shivered, pulling his thin shirt tighter around him. The house was growing colder, too. “We can’t keep going like this, Kacchan. We’ll get sick. We’ll starve.”
Bakugo slammed his fist against a wall, a desperate sound. “Damn it! Damn it all to hell!” He turned, his eyes blazing, not with anger, but with a raw, desperate frustration. He looked at Izuku, really looked at him, and for the first time, Izuku saw a flicker of something beyond anger in his gaze. Resignation.
“You really think… this is the only way?” Bakugo asked, his voice barely audible.
Izuku swallowed, his throat dry. He nodded slowly. “I don’t see another option, Kacchan. We’ve tried everything.”
The next few days passed in a haze of unspoken tension. The house grew colder, darker. The food became scarcer. They huddled together for warmth, the unspoken weight of their situation pressing down on them. Izuku felt a strange mix of fear and a burgeoning, reluctant acceptance. He was an Omega. Bakugo was an Alpha. The villain had forced their hand, stripping away their choices, leaving them with one horrific, undeniable path to freedom.
One night, the cold seeped into their bones. Bakugo shivered, his teeth chattering. He looked at Izuku, his eyes dark in the dim light.
“Alright, Deku,” Bakugo said, his voice rough, thick with an emotion Izuku couldn’t name. “Let’s get this over with.”
Izuku’s breath hitched. His heart hammered. He felt a wave of nausea, followed by an unexpected warmth that spread through his limbs. He met Bakugo’s gaze, seeing the conflict, the disgust, but also a flicker of something new – a grim determination, an almost protective resolve.
“Okay, Kacchan,” Izuku whispered, his voice barely audible.
The first intimacy was awkward, fumbling, driven by desperation more than desire. It was cold, clinical, a means to an end. But as the days turned into weeks, and the house slowly returned to its former comfort – warm water, fresh food, soft light – something shifted between them. The biological imperative, amplified by their altered states, began to assert itself. The initial discomfort gave way to a strange, almost primal connection. Bakugo’s scent, once just an indicator of his presence, became a source of comfort, a signal of safety. Izuku’s own Omega instincts, once terrifying, now guided him, drawing him closer to the Alpha who was now his only world.
The house, in turn, responded. New rooms opened, revealing a nursery, fully furnished with a crib, tiny clothes, and soft blankets. The villain’s message, though unspoken, was clear: *you are on the right path.*
Izuku’s body changed, subtly at first, then undeniably. The nausea, the cravings, the growing roundness of his belly – all undeniable proof. He was pregnant. With twins, the house’s unseen overseer informed them through a disembodied voice, after a series of strange, dream-like scans.
Bakugo, initially distant and stoic, found himself drawn into the reality of it. He’d watch Izuku, his gaze softening, a hand often hovering near Izuku’s stomach, never quite touching. He started bringing Izuku comfort items, extra pillows, warm drinks. His anger, once a raging inferno, had banked down to a simmering protectiveness.
“You need to eat more, Deku,” Bakugo would grumble, pushing a plate of food towards him. “You’re eating for three now, remember?”
Izuku would smile, a soft, genuine smile that had become more frequent in their strange, isolated world. “I know, Kacchan. I’m trying.”
The birth was a blur of pain, fear, and Bakugo’s fierce, unwavering presence. He was there, a solid anchor, his hand gripping Izuku’s, his scent a grounding force. And then, two tiny cries filled the silent house. Two boys. One with unruly green hair and bright, curious eyes, the other with spiky blonde hair and a surprisingly calm demeanor. A perfect mix of them both.
“They’re… beautiful, Kacchan,” Izuku whispered, tears streaming down his face as he held one tiny bundle, Bakugo holding the other, his expression a mixture of awe and bewilderment.
“Yeah,” Bakugo said, his voice thick. He looked at the tiny face, then at Izuku, a profound understanding passing between them. “Yeah, they are.”
Five years passed within the walls of that house. Five years where Izuku and Bakugo, physically, remained the same age as when they entered. But mentally, emotionally, they aged. They learned to be parents. They learned to rely on each other. Bakugo, the explosive hero, became a patient, if still gruff, father. Izuku, the timid analyst, became a strong, nurturing Omega. They taught their boys, Kaito and Ren, everything they knew, from basic reading to rudimentary self-defense, using the house’s endless library and spacious rooms as their classroom and playground.
Kaito, with Izuku’s bright eyes and analytical mind, often questioned the nature of their home. “Papa, why can’t we go outside? Why is the forest so close?”
Ren, with Bakugo’s spiky hair and stubborn streak, would just nod along, content to follow his brother’s lead, but always ready to defend him.
“It’s… complicated, sweetie,” Izuku would explain, trying to find words for a reality they couldn’t fully grasp. “This house keeps us safe. One day, we’ll be able to leave.”
Bakugo, watching them play, a soft smile on his face, would often add, “And when we do, we’ll show you the whole damn world.”
Their love, born of desperation, had bloomed into something real, something deep and enduring. Bakugo’s past actions, his bullying, the harsh words, were still a shadow, a painful memory. But the shared experience of parenthood, the intimacy forced upon them that grew into genuine affection, had forged a new bond. He was a good father, a devoted partner, his fierce protectiveness now channeled into his family. Izuku, in turn, had shed his insecurities, finding strength in his new role, in the love he felt for his children and for the Alpha who stood beside him. Their mating mark, a subtle, almost invisible swirl on their inner wrists, a testament to their unbreakable bond.
One morning, the house hummed differently. A soft, almost musical chime echoed through the rooms. The villain’s voice, for the first time in years, returned.
“The experiment is complete. You have fulfilled your purpose. You are free.”
A section of the living room wall, previously solid, slid open, revealing a bright, sunlit path leading into the forest. The air, fresh and cool, carried the scent of pine and damp earth, a stark contrast to the house’s confined atmosphere.
Izuku gasped, pulling Kaito and Ren close. Bakugo stood protectively in front of them, his eyes narrowed, scanning the path, wary.
“It’s over,” Izuku whispered, tears welling in his eyes. “We’re free, Kacchan.”
Bakugo nodded, a fierce determination in his gaze. “Yeah. We are.” He took Izuku’s hand, then motioned for the boys to follow. “Let’s go, brats. Time to see the world.”
They walked out, hand in hand, a family stepping into an unknown future. The forest path led them to a clearing, where a familiar, sleek black car waited. All Might, in his weakened form, stood beside it, his usual broad smile replaced by a worried frown. Aizawa, his capture weapon coiled, stood beside him, his expression grim.
“Young Midoriya! Young Bakugo!” All Might exclaimed, rushing forward. “Thank goodness! We’ve been searching for you!”
Izuku and Bakugo stared, bewildered. All Might looked exactly as they remembered him, not a day older. Aizawa, too.
“All Might?” Izuku’s voice was hoarse. “What… what are you doing here? And… where are the others?”
“The others?” All Might looked confused. “What are you talking about? You two have been missing for five days! The entire hero world has been in an uproar!”
Five days. For Izuku and Bakugo, it had been five years. Five years of captivity, of forced intimacy, of parenthood. Five years where they hadn’t aged a day, while their children, Kaito and Ren, now five years old, stood beside them, clutching their hands.
Aizawa’s eyes, sharp and perceptive, fell on the children. His brow furrowed. “Midoriya. Bakugo. Who are these children?” His gaze flickered between the boys and the two heroes, then to their hands, where a faint, almost invisible mark swirled on their wrists. His eyes widened slightly. “And… what are those marks?”
Bakugo stepped forward, shielding his family. “They’re our sons, Aizawa-sensei. Kaito and Ren.” His voice was firm, unyielding. “And these marks… they’re none of your damn business.”
The return to UA was a whirlwind of medical examinations, interrogations, and disbelief. Doctors confirmed their physical age hadn’t changed, while their mental state reflected five years of experience. Their quirks, One For All and Explosion, slowly returned, but now they carried a new, undeniable layer: the Alpha and Omega traits. They were the only ones. A unique biological anomaly, a living testament to a villain’s twisted experiment.
The villain was never found. The house, when authorities located it, was empty, stripped bare, no trace of the sophisticated technology or the strange biological alterations that had taken place within its walls. It was as if it had never truly existed, a phantom prison.
Izuku and Bakugo, however, carried their prison with them. Their lives were irrevocably altered. They were parents, navigating a world that had moved on five days while they lived five years. They had to explain their children, their bond, their new identities as Alpha and Omega, to a society that had no frame of reference.
UA, after much deliberation, allowed them to stay, to continue their hero training, with the understanding that their lives were now different. All Might, devastated by what had happened to his successor, became a fierce advocate for their new family. Aizawa, though initially skeptical, saw the deep, undeniable bond between the two young men and their children, and offered what support he could.
Life was a constant adjustment. Late-night feedings, early morning training, school assignments, and explaining to their curious classmates why they suddenly had two five-year-old sons. Kirishima, ever supportive, was the first to wholeheartedly embrace the boys, often babysitting with a boisterous enthusiasm. Todoroki, in his quiet way, brought them small, thoughtful gifts.
One evening, after tucking Kaito and Ren into their new beds in their UA dorm apartment, Izuku leaned against Bakugo, watching the city lights twinkle outside their window.
“It’s still so strange, Kacchan,” Izuku murmured. “Like we’re living in a dream.”
Bakugo wrapped an arm around him, pulling him closer. His Alpha scent, now a familiar comfort, enveloped Izuku. “It’s our reality, Deku. And we’ll make it work.” He kissed the top of Izuku’s head, a soft, tender gesture that spoke volumes. “We always do.”
Their love, forged in the crucible of a villain’s twisted game, had survived. It was a love built on shared trauma, on unwavering protection, and on the undeniable bond of parenthood. They were the world’s only Alpha and Omega, but they were also just Izuku and Katsuki, two heroes, now parents, facing a future they never imagined, together. And as the city lights blurred into a hopeful horizon, they knew they would face it, strong and united, as the unique family they had become.