thunderous backshots
pairing: reader x garou (one punch man)
genre: explicit/adult, romance, smut, dom/sub dynamics
warnings: explicit sexual content, heavy bdsm elements (dominance/submission, spanking), oral/penetrative sexual activity , graphic sexual language
synopsis: you thought you could take backshots for garou but you very quickly learned that was not the case.
with every powerful thrust, your mind hazed over, surrendering to the filthy, dizzying state that enveloped you. his voice, low and commanding, cut through the heavy air, igniting a shiver of excitement and raw pleasure that coursed through you.
“whose pussy is this?” he growled, his tone laced with intoxicating possessiveness. each relentless drive of his cock into you sent shockwaves of bliss reverberating through your body, leaving you breathless and aching for more.
you were completely and utterly his, lost in a tide of sensation that blurred the line between pleasure and surrender.
you could hardly think straight, your senses overwhelmed by the feel of his cock splitting you open, the heat building with each ruthless stroke.
the world blurred as you struggled to form a coherent thought, your body a moaning, trembling mess beneath him.
“yours! yours! yours, garou!” you chanted like a prayer, your voice breathy and desperate.
each word spilled from your lips like a mantra of surrender, an affirmation of the filthy connection between you.
the way he moved was mesmerizing—each thrust deliberate, brutal, and deep, designed to stir every nerve in your body.
you clutched the sheets, your fingers digging in so hard your knuckles turned white, the fabric crumpling as if it could anchor you amidst the rising tide of sensation.
his scent surrounded you like a heady fog—a mix of sweat, musk, and heat—filling your lungs, making you light-headed.
each slam of his hips sent ripples of ecstasy coursing through you, the tightening coil of pleasure deep within, the heat pooling low in your belly, a blissful pressure that threatened to spill over.
you thought to yourself, how the fuck did i end up in this situation?
FLASHBACK:
the night had started off innocent enough. you’d just gotten out of the shower, hair damp, a towel hanging loosely around your shoulders. you and garou were sprawled out on the couch, flipping through channels, looking for something to watch.
it was just background noise, a reason to be close, your shoulders brushing as you sat next to each other.
banter flowed naturally, as it always did with garou. his teasing was easy, the kind that always made you want to throw it back at him.
“i’m just saying,” garou drawled, a grin spreading across his face, “i don’t think you could handle my backshots.”
you snorted. “please, i could take it and then some. i’m not one of those weaklings you fight all the time.”
he raised an eyebrow. “is that right?” his eyes narrowed in challenge. “i think you’re bluffing, babe.”
a spark of defiance flared inside you. “oh, i’m bluffing? you really think i can’t handle your so-called thunderous backshots?”
he laughed, a low rumble. “nah, i don’t think you can handle my thunderous anything.”
you weren’t about to back down. you shifted closer, tone daring. “prove it.”
that was how you ended up here—on all fours, garou behind you like he was about to win a championship. his hands gripped your hips, firm but steady, and you could feel the tension in his body like a coiled spring ready to snap.
he leaned over, his breath hot at your ear. “you sure about this, babe? i don’t want you crying halfway through.”
“shut up and do it,” you shot back, and before you could say anything else, he was moving, slamming his cock into you with a force that knocked the air out of your lungs.
“woah, okay!” you gasped, fingers curling against the sheets. he chuckled behind you, clearly enjoying himself.
“what’s wrong?” he taunted, picking up the pace. “i thought you said you could handle it.”
you bit your lip. “i can handle it, just… ease into it, damn.”
garou snickered. “ease into it? what happened to all that big talk?”
“i’m just warming up,” you shot back, though your voice cracked. his rhythm was relentless, each thrust making you bite back a mix of curses and moans.
“hey, you’re the one who wanted to prove a point,” he teased, “i’m just helping you out.”
you surrendered to the moment, arching up to meet his every thrust, pushing back against him in a desperate plea for more. the heat radiating from your cunt was insatiable, a burning need consuming you whole.
garou’s hands gripped your hips harder, his fingers digging into your skin. with every thrust, he drove his cock deeper into you, and each time, his palm came down against your ass with a loud smack.
the sting spread through your skin, a sharp burn that made you whimper—but damn, you loved it.
“you love it, don’t ya?” he taunted, his voice rough with amusement. “i can see it all over your face.”
“shut up,” you shot back, your voice breathy, cheeks burning with a mix of pain and pleasure.
garou chuckled, low and wicked. “nah, babe, i think you like it when i hit a little harder.”
his hand came down again, another sharp slap that made you gasp, your body jolting forward. the sound echoed in the room, your ass flushed red beneath his hand. you couldn’t hide the way you pushed back into his cock, wanting more.
“oh, you definitely like it,” he continued, his tone dripping with cocky confidence. “don’t try to deny it now.”
the rhythmic sound of skin slapping against skin filled the room like a primal beat, drowning out all other noise, making your heart race faster in time with the pulse of your excitement.
every thrust from garou sent jolts of filthy pleasure through you, igniting every nerve ending and leaving you breathless. you felt the heat radiating from your skin, your breaths coming in ragged gasps as you surrendered completely.
END OF FLASHBACK:
it was getting too much—garou’s pace was brutal, each thrust driving deeper, harder, and you were on the edge of losing it. your mind was a mess, every nerve in your body firing at once.
desperate, you reached back, pressing your hand against his lower stomach to slow him down. but before you could catch your breath, he smacked your hand away.
“nuh-uh,” he growled, not breaking his rhythm. “you’re gonna take this cock, baby—all of it.”
“i’m trying!” you gasped, trembling. “it’s just—”
“no excuses,” he cut you off, a wicked grin spreading across his face. “you said you could handle it, so handle it.”
“easy for you to say—you’re not the one getting fucked into the mattress,” you shot back, breathless.
he chuckled, low and deep. “you should’ve known better by now,” he said, his voice dripping with cocky amusement. “i don’t do anything half-assed.”
“good girl,” he breathed out, the praise igniting another spark of pleasure in you.
“i’m gonna cum in this pretty pussy and get you pregnant,” he grunted, his voice thick with desire as he delivered another sharp slap to your ass.
you yelped at the sting, drool spilling from your mouth, pooling against the sheets. every ounce of you focused solely on the way his cock moved inside you, the rhythm dragging you further and further into bliss.
“look at you,” he said breathlessly, voice rough. “so eager, so fucking ready.”
“yes… yes, please!” you whimpered, barely audible.
his eyes gleamed as he leaned over you. “good girl. i’m gonna give it to you,” he growled just before thrusting harder, pulling an uncontrolled moan from your lips.
as he ground into you, the slap of skin against skin became a rhythm, a primal beat synchronizing with the wild pounding of your heart.
“you’re gonna take it all,” he growled, a hint of possessiveness in his tone.
“yours!” you gasped, the word spilling from your lips like a prayer. “i’m yours!”
“that’s right,” he grunted, voice intense. “you’re mine, and i’m gonna fill you up.”
every thrust became more frantic, more desperate. the room felt like it was closing in, the heat between your bodies building as you both pushed to the brink.
then garou shifted, angling his hips just right, and suddenly everything shattered. the wave crashed over you, pleasure erupting so fiercely your whole body trembled.
a cry slipped from your lips as every nerve in your body lit up, electricity sparking through your veins.
he followed suit, a low, guttural sound escaping him as he buried himself deep inside, his cum spilling into you, hot and thick, spreading warmth through your core.
each pulse made your body clench tighter, dragging you further into that blissful haze. you could feel him trembling too, his breath ragged against your ear.
as he finally pulled out, his seed dripped from you, warm and sticky against your skin, pooling onto the mattress. you glanced back at him, still breathless, a lazy smile tugging at your lips.
garou looked down at the mess with a mix of pride and amusement. “guess i really did a number on you, huh?” he said, his voice low and rough.
you snorted, rolling your eyes but unable to suppress your grin. “yeah, no kidding. now we’ve gotta change the sheets, genius.”
he laughed, pulling you close, his lips brushing your forehead. “worth it,” he murmured, and you couldn’t help but agree as you sank into his warmth, the last tremors of pleasure rippling through your body.







