Swallow Me in Fire

Pairing: Bakugo Katsuki/Midoriya Izuku 

Rating: 18+

Tags: Omega!Izuku, Alpha!Bakugo, A/B/O Dynamics, Blowjobs, Rough Sex

Summary: This is an expansion of this tweet  https://twitter.com/theaafterdark/status/1190674186303205376?s=21 

This is a kofi commission for anon

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Slick ran in thick streams down his trembling thighs. His mind was going blank. That intense fear of this strange creature who seemed to embody the spirit of the volcano itself was quickly fading – replaced by stampeding, rampant heat. Now that he had caught the scent of this powerful Alpha, he couldn’t smell anything else. The nauseating odor of sulphur, fire and molten earth was not even an afterthought. It was so far gone from his memory that he couldn’t even fully recall what it smelled like. Every deep, ragged breath he pulled in was heavy with Katsuki’s addictive sweet scent. With each of those breaths, the fire raging in the pit of his belly grew even hotter. Still, he was not completely lost to his Omegan instinct. A tiny voice in the back of his head wailed for him to, at least, try to break free. Did he truly want to become the mate to some monstrous serpent?! If he didn’t run now, there would be no fighting this innate instinct to submit! 

But…where would he run too? Back down the mountain, to the village filled with people who watched him be dragged off to be sacrificed with blank eyes and slack mouths? Would he flee further into the world, only to be dominated by some Alpha…one who might prove far crueler than this beast ever could be. Was that an uncertain fear he would allow to control him? Would he truly not even try to save himself? Frantic, scrambled thoughts sluggishly clawed through the golden fog hanging over his mind. It was becoming harder to think. Katsuki’s large, hot hands roamed over his bare back, sending over shockwaves of tingles rushing across the surface of his over-sensitive skin. Smooth, warm lips found the curve of his neck, first pressing a kiss to where his throat met his shoulders then stretching open to nip hard enough to bruise. Izuku cried out sharply. A bolt of radiant heat pierced up from his drenched crotch. That little voice in the back of his mind became even dimmer. 

Chuckling in quiet delight, Katsuki dragged a hot tongue up to his ear, “What a sweet voice, my pretty Omega. I want to hear even more.”

Those muscular arms slipped away. With nothing to support him, Izuku collapsed down onto his knees. Panting heavily, his eyes wide, his heart beating like a trapped bird against his ribs, he slowly lifted his head. His intention was to look up into the face of the beast who was slowly, steadily captivating him, but only made it halfway. All the moisture in his throat vanished, flooding into his mouth as drool that threatened to leak out. Intense, dizzying heat and want swamped him. Loud buzzing filled his ears. Protruding from a slit in the lava serpent’s tail – around where its pubic bone would be if it were human – were two large, grey, ribbed cocks. Mouth hanging open slightly, Izuku gawked at them. He could feel his hole twitching, desperate to be stuffed full of those incredible Alpha cocks. The desire…the need to be bred became even stronger. Lifting one trembling hand, he clumsily wrapped it around one of the thick lengths. It was blazing hot against his skin. 

“Well, what are you waiting for? Have a taste.” Katsuki cooed, a teasing smirk on his flushed, excited face. 

Exhaling sharply, Izuku moved without a thought. Sliding forward, his mouth stretching open, he took the head of one between his lips. An intensely bitter, salty flavor spread over his tongue. The taste was…incredible. Trembling, feeling himself become slicker, His body was preparing itself to be bred…it wanted it so badly that there was no more room left for resistance. He would spread his legs and accept this beast’s seed. Breathing heavily through his nose, Izuku forced himself down even further, taking as much of its cock as he could. From somewhere above him, Katsuki moaned contently. A large hand rested on the top of his head. Clawed fingers curled into his hair. Holding him firmly in place, Katsuki began to move, roughly pumping its hips to drive its cock deeper into his mouth. Izuku gagged but instead of discomfort and terror, the sensation of having his jaw stretched to its limit, of the spear-like head pushing down into his throat only served to ramp the wild heat overwhelming him to rage even hotter. 

Choking out a snarling grunt, Katsuki yanked hard on his hair, dragging him in even closer. Its cock swelled up bigger than a rush of burning, salty fluid exploded out into his mouth. A violent shudder wracked his body. Eyes stretching open wide, Izuku swallowed on instinct. The feeling of this Alpha’s thick, fragrant cum sliding down into his belly was too much for him to take. He came with a loud, muffled scream. This…he had never felt like this before. Was this the blessing of being an Omega? Being able to feel this incredible just from having an Alpha cum in his mouth? What…what would it feel like to be breed? 

Katsuki slipped free from his mouth with a harsh breath. One last rope of burning jizz splattered across his lips. Panting heavily, frozen from the remnants of pleasure still rolling through his veins, Izuku stared, wide eyed and dazed, up at him. There was a wide, toothy…hungrily smile stretched across Katsuki’s face. A throb of wild excitement, tinged with the barest hint of panic, pounded in the center of his chest. Eaten…he was going to be eaten and there was nothing he could do. Even if he did still have the desire to run, his body wouldn’t respond. He knelt there, staring up at this powerful Alpha, waiting to see what he would do next. 

Cocking his head slightly, Katsuki rumbled, “You ready to be bred, pretty little Omega?”

His tongue lay numb at the bottom of his mouth. With a shaky, shuddering breath, Izuku eased onto his back, slowly spreading his legs open. The front of the loincloth still clung precariously to his drenched cunt, soaked through with his slick. Moving with a startling, breathtaking grace, Katsuki lowered down on top of him. Its powerful body trembled against him. There was a heaviness, a franticness to the pace of his breathing that had a panicky, anxious edge to it. Reaching down between them, Katsuki tore the flimsy fabric away from his crotch, exposing his cunt. Gasping loudly, a powerful tremble shaking his overheated body, Izuku stared, gawking and silent, as the beast lead its cock to his hole. Grinning widely, its teeth bared just inches from his face, those crystalline eyes blazed with naked want and…something else…desperation, terror, hunger, Katsuki…it…no, he…he looked as though he wanted to run but something was compelling him to stay. 

Staring up into that brilliant red, Izuku wondered…was this serpent just as lost as he was? Isolated at the top of this feared volcano, separated from the rest of the world – his only connection being the sacrifices shoved to their deaths. Was he just as scared as Izuku? Was he just as jaded and bitter from the hand fate had dealt him? Reaching up to curl his arms around Katsuki’s broad shoulders, he pulled him in closer. That was it…wasn’t it? Two souls discarded by fate, left to wither and rot in their own isolation, having found one another. Or perhaps…this was where fate had wanted them to be? Lifting his head to gently press a kiss to the corner of Katsuki’s mouth, Izuku breathed, “Impregnate me…my Alpha.”

Katsuki’s eyes widened. There was the briefest moment when he looked as though he might really bolt then, with a raspy snarl, he slammed forward, driving one of his ribbed lengths inside of Izuku’s virgin cunt. A loud howl erupted out from his throat. Hips arching off the heated stone, Izuku came as the pronounced ridges dragged along his overstimulated insides. Cock…cock-! An Alpha’s cock was inside him! Heat speared through his stomach. Pleasure ran in thick currents through his nerves. He wailed, screamed and sobbed as Katsuki brutally slammed into him, fucking him with such intensity, it felt like he was trying to imprint the shape of his cock in his cunt. Clinging to his broad back, digging his blunt nails into his scaly skin, Izuku thought of nothing but the Alpha’s cock inside him. Breed…breed…breed! He wanted to be impregnated by this Alpha’s seed! 

“Such an interesting little Omega but I will grant your wish. Bear my child and submit as my mate. I’ll give you a happiness that the Gods would have denied you.”

“Yes…” Izuku whispered shakily, curling his legs loosely around Katsuki’s hips. The village, his sacrifice…it all seemed so far away now – like it had happened in a different lifetime. His misery, his despair, his rage…none of it mattered now. All that did was his Alpha – this strange, lonely, frightened lava serpent at the top of the volcano.