Work Text:
Atsumu stepped out of the forest and into the meadow clearing with one cautious step. As his soft leather boot met the low-lying grass, he glanced this way and that, half expecting to see the thing standing directly beside him, as if sensing he was about to intrude in its space. Once he was sure he was alone, Atsumu took another step, then another, then another, until he was steadily making his way across the peaceful meadow to a particular cluster of bright green leaves.
Atsumu knew he shouldn’t be in the meadow. It was the first thing his distant neighbors had warned him of when he’d moved into his isolated cottage. The meadow was dangerous, patrolled by a creature they’d never seen directly, but had enough evidence of to be afraid. Atsumu was warned it took pretty young men like him, that all it left of them was their ripped clothes, until they returned months later in a changed, almost unrecognizable mental state.
Atsumu didn’t believe them for a second. It seemed exactly like the kind of story made up to frighten his city-raised self out of the forest and back to the overcrowded houses of his childhood. If the scariest thing his neighbors could think of was some footprints left next to the clothes of men who’d clearly tried to run away from their silly stories, then Atsumu certainly wouldn’t be shooed away.
Still, it didn’t hurt to be cautious. Atsumu knew large animals liked open passageways through the forest and a meadow clearing like this was sure to be a hotspot for bears and wolves. He had to keep a watchful eye out as he dug through the dirt for the wild carrots he’d spotted earlier.
“Aha!” Atsumu cried as he finally wrangled one from the earth. He held it by the base of the leaves, raising the thin, silvery-white carrot to the sun. It would have been a measly thing back home, but vegetables were much more scarce here. Atsumu would take what he could get.
After one success, Atsumu was even more intent on gathering the full bounty this area had to offer. He crawled across the moist ground, mud staining his tan trousers and fingernails practically filling with dirt as he dug under every leaf shoot for the wild carrots. He perhaps got too engrossed in his work, because he didn’t notice the quiet steps that snuck up behind him until it was too late.
Atsumu froze as he finally heard the crunch of grass. His blood ran cold, hands shaking as he turned over his shoulder. Everything in him hoped and wished that it was an adventurous rabbit, an aggressive deer, hell , he’d even accept a bear. It couldn’t be the thing , it was all made up, a story just to scare-
Atsumu screamed. The thing behind him was huge and certainly not a bear or friendly forest creature. It had jet-black hair, big hooves that could crush any of Atsumu’s bones with ease, a thick tail that would probably hurt if Atsumu were swatted with it, and— worst of all— the neck of the thing tapered off into the upper body of the hottest man Atsumu had ever seen.
“ Nonono ,” Atsumu cried out, crawling back as quickly as he could as the horse-man stared down at him. “Please don’t kill me.”
The horse-man snorted. “Why would I kill you?”
Atsumu stilled, heart pounding. “Y-you can speak?”
“Yes,” the horse-man replied curtly. He shook his head, knocking his long, curly bangs out of his eyes. They were dark, sharp, and adorned by two moles in a perfect vertical line above his right eyebrow.
Atsumu blinked. “Sorry.”
He decided in the long pause that followed that the horse-man truly had no plans to kill him, so Atsumu decided it was safe to rise to his feet and attempt to wipe the dirt off his hands. The horse-man’s gaze remained steady on him. Atsumu took a nervous step back.
“What are ya?” Atsumu asked. “And are ya the reason all those other guys disappeared and came back weird?”
“I’m a centaur,” he replied. He shifted on his hooves, cocking one up so just the front edge of the hoof remained on the ground. “I suppose I am.”
“You suppose ?” Atsumu asked in shock. “Ya mean ya aren’t sure if ya kidnapped ‘em or not?”
“I didn’t kidnap anyone,” the centaur snapped. “They wanted to come with me.”
Atsumu set his hands on his hips. “Yer lyin’. Why would they?”
The centaur smirked. He began slowly turning in a circle until his left side, which was primarily horse, faced him. “They also wanted to cum with me.”
Atsumu didn’t know what the hell the centaur could be talking about until he let the awkward pause drive his gaze across the centaur’s horse body and he saw- it . The centaur had a large, fully erect penis.
Atsumu’s jaw literally dropped. “What the fuck.”
“Do you understand now?” the centaur asked.
Atsumu nodded dumbly. He couldn’t look away. It was the size of Atsumu’s forearm and the perfect in-between of human and horse, with a flared but rounded tip. The base was black flesh, cut halfway by the centaur’s man-half’s pale skin. His balls hung heavily below. Atsumu wanted it. Him. Desperately .
“Ya… Ya willin’ to take another?” Atsumu asked. His mouth felt completely dry, but his pussy was completely wet.
The centaur stomped one of his powerful hooves. “Let me see what you’re working with.”
Atsumu had never stripped faster. He left his clothes in a pile beside him and- Ohh . That’s why the others’ clothes were always found. He tried to find a natural way to stand while presenting his nakedness to the centaur.
Clearly he was pleased, a tiny smile cracking his tinier mouth. “Good.”
Atsumu grinned. If there was one thing he was sure of, it was his body. He was glad the centaur’s taste seemed to agree with his well-groomed body hair and the muscles gained from years of hauling things for his family’s restaurant in the city. The approval gave him the confidence to set a cocky hand on his hip.
The centaur laughed through his nose before Atsumu could think of something terribly raunchy to say that would embarrass him later. “You seem awfully sure you can take me.”
“I’m very sure,” Atsumu replied. He took a step towards the centaur, running a hand down his long back, feeling every taut muscle under his skin. He was extremely aware that the centaur could have easily killed him or even just had his way with him, and Atsumu would hardly be able to defend himself. The thought made him rub his thighs together. “I mean, ya aren’t even the biggest I’ve ever taken.”
“Prove it,” the centaur said sharply. He ran a finger along Atsumu’s jaw, tilting his head up by the chin until their eyes met. His expression was amused, his plump, narrow mouth slightly upturned as he studied Atsumu. “Show me how you could possibly handle my cock.”
Atsumu sneered briefly before dropping to his hands and knees, leaning on one hand to coat the fingers of the other in saliva before he reached back for his cunt. He didn’t need any prep, any foreplay, or any build-up at all to immediately spear himself with two fingers, only thrusting them twice before the squelching wet heat made him certain he could take a third.
The centaur stared down at him, the amusement quickly fading into boredom. Atsumu had to do something to keep his attention, to keep that monstrous dick of his from softening even slightly. He needed it at full power for the dicking he was going to earn.
“M-Mr. Centaur,” Atsumu called, moaning softly as he teased a fourth finger against his entrance. He slipped it in before he was ready and nearly fell face first into the dirt. “D’ya have a name?”
The centaur’s eyes flashed. “Kiyoomi,” he replied quietly.
Atsumu tried to moan it softly, but the deep movements of his own hand made it impossible to form the word. His tongue felt like lead in his mouth. “Nah,” Atsumu said. “‘S too long. Omi.”
“That is not my name,” Kiyoomi replied.
Atsumu ignored him. “ O-Omi !” he cried. “I-is this enough?”
“All of them,” Kiyoomi replied. He stooped to tug at Atsumu’s hair, until his eye level was lifted beneath the horse body to stare down the length of Kiyoomi’s dripping shaft. “Four isn’t enough, little human.”
He knew Kiyoomi was right. He couldn't dream of taking even Kiyoomi’s tip if his own fist was too much for him. He shouldn’t have lied about his past endeavors. The only person he’d fucked beside his own hand had a cock smaller than the wild carrots he’d plucked earlier. He took a deep breath before pressing his thumb beside his fingers, curving his hand to ease the stretch. He felt split in half, whole body breaking in desire for the centaur. He needed him. He’d abandon his simple life in the woods for him. As long as he got to feel that monster cock inside him, he’d be happy.
“ Fuck , please,” Atsumu begged. He rocked on his knees, back and forth, back and forth, fucking himself on his own fist. “ Agh -“
“Is that too much for you?” Kiyoomi cooed meanly, stroking Atsumu’s hair. His eyes glinted with arousal as Atsumu’s met them. Atsumu could somehow smell the mountain of precum Kiyoomi was creating beneath himself. He wanted to lick the earth, gather it all in his mouth, and swallow every drop. He tried to flash his teeth at Kiyoomi, but all that came out was a garbled moan. Kiyoomi tutted. “You know, you’re doing this to yourself. You could stop if you wanted to.”
“I’m not stoppin’ til’ yer dick is in me,” Atsumu grunted. He pounded himself now, thrusting his hand as deep and as hard as he could go. He imagined Kiyoomi would be no gentler. He needed to adjust. “ Shit -“
“Come for me,” Kiyoomi commanded. “Come, and I’ll give you what you want.”
“Fuck, fuck, fuck,” Atsumu chanted. He shook with the effort, shifting on his knees to fix the angle until his knuckles were pressing against his g-spot with every thrust. His eyes rolled back in constant pleasure, moans endless from his lips. “O-Omi…”
“Do it,” Kiyoomi said.
Atsumu came with a drawn out moan, jerking to a stop on his fist as his pussy squirted a few worthless drops of release across the dirt. He couldn’t catch his breath before Kiyoomi raised one regal hoof and lightly tapped his shoulder, slumping his entire front into the ground. He pulled his fist out with a whine as Kiyoomi settled above him, front hooves on either side of his head. Atsumu shivered as Kiyoomi’s cock brushed against his hole.
“Up,” Kiyoomi commanded. “Let me fuck you.”
“C-can’t ya give a guy a second,” Atsumu panted. “I just had my entire hand up my pussy.”
Kiyoomi grunted in reply, although he kept shifting his weight so that his tip kept nearly dipping inside of Atsumu’s gaping cunt. Atsumu took a deep breath as he pushed himself up on his arms and onto his feet. His back brushed against Kiyoomi’s horse belly as he stooped forward. Atsumu was learning quite quickly that nature and physics and their bodies’ very designs were clearly pitted against a human and a centaur ever having sex.
Kiyoomi seemed pleased as Atsumu finally settled with his hands braced against Kiyoomi’s front legs, gripping just beneath the shoulders. His knees were slightly bent, which he knew he’d be feeling in the morning, but he paid it no mind as Kiyoomi shifted until his cock was once again finding its home against Atsumu’s entrance.
“Prepare yourself,” Kiyoomi said, although gave Atsumu no time at all to do so before he was pressing inside, slowly burying himself in Atsumu’s heat. After a few inches of the thickest thing Atsumu had ever felt, he paused, cock twitching slightly inside of Atsumu and-
Atsumu came with a shriek, nearly collapsing forward under Kiyoomi. His cunt tightened in a death-vice around Kiyoomi’s length, juices trapped by his thickness. It only made everything sloppier, wetter as Kiyoomi gently fucked him through it, showing care and gentleness that Atsumu hadn’t expected him to possess. Atsumu couldn’t speak.
“Can you take more?” Kiyoomi asked.
He waited for a reply that Atsumu didn’t know how to give. Instead, he opened his mouth, letting whatever sound come that may. “ Hnnn ,” was the reply Kiyoomi received.
Kiyoomi chuckled. “Guess so.”
He continued pressing his way in, pausing occasionally to let Atsumu attempt to breathe. Atsumu tried to do anything to keep from coming again so soon. He stared at his hands and tried to count the folds of skin on his weathered knuckles. He stared at the dirt, trying to count the pebbles exposed in it. Worst of all, he stared down his own body, and caught sight of the large bulge that had been created in his stomach by the spear of Kiyoomi’s cock.
“ Oh my god ,” Atsumu moaned. “Oh, fuck. Oh -“
As if foreseeing the future, Kiyoomi forced himself the rest of the way inside, thrusting what felt like countless inches of himself inside of Atsumu in one single moment. Atsumu could feel him in his throat. He screamed as he came a final time, squeezing every muscle in his body as his orgasm hit him with a fury. He couldn’t stop it, the scream, his orgasm. Everything released from him at once.
Kiyoomi held firm, only beginning to rock his hips when Atsumu went mute and dumb, only managing to keep his hands on Kiyoomi’s legs and keep his legs locked in place. He took Kiyoomi like a champ, like the perfect human sex doll Kiyoomi had been looking for all these years. Kiyoomi groaned with pleasure.
Atsumu was fortunate that, like a normal horse, centaurs had short copulation times. Only a few seconds and thrusts later, Kiyoomi was shouting his release, his strong voice reaching every edge of the meadow. However, unfortunately for Atsumu, Kiyoomi also possessed the same volume of cum as a normal horse.
The torrential rush of cum that flooded Atsumu’s cunt had Atsumu suddenly whipped back to reality, barely managing to withstand the sudden weight in him, the tightness of his muscles as the bulge formed by Kiyoomi’s cock remained there as he slowly pulled back, still coming. Atsumu released one hand from Kiyoomi’s legs to stroke his stomach, to soothe the stretch and try to ignore that the sensation had put him right on the edge again.
Kiyoomi’s rapidly softening cock finally fell free of Atsumu’s ruined pussy with a loud squelch and all of the force which had been keeping Atsumu aloft dissipated at once. He collapsed into the ground, legs outstretched and arms curled beneath him. He couldn’t move.
Kiyoomi stepped over him gently, then kneeled before him. His horse legs seemed more agile than before, as if coming in Atsumu had stolen all of Atsumu’s energy and given it to Kiyoomi. He gently stroked Atsumu’s hair, parting it where it had been before Atsumu had rubbed it against Kiyoomi’s underside in the thrash of sex. Atsumu moaned softly, unable to even lean into the touch.
“You should get up,” Kiyoomi suggested. “My home is far comfier than the dirt.”
“I… can’t… walk,” Atsumu replied slowly, arduously choosing every word.
Kiyoomi pursed his lips. “I am half-horse, you know?”
Atsumu frowned. “Of course I know,” he groaned, eyes falling shut as he attempted just slightly to rise onto his knees. He failed and crashed only an inch back into the mud. “That’s why I’m in the mud in the first place.”
Kiyoomi smirked. “By your own choice.”
Atsumu cracked an eye open. Despite the terrible, stinging pain of his cunt, the sore stretch of his stomach, and the backache he was sure to have tomorrow, Atsumu was certain. “Best choice I ever made.”
He let Kiyoomi ease him onto his back. He let Kiyoomi carry him to his home across the meadow, where Kiyoomi lay him down in a soft bed of carefully arranged grasses covered in a thick fur. He let himself forget the clothes he’d left behind, about the carrots he’d harvested for his dinner, about the cabin in the woods he’d just purchased. None of that mattered as Kiyoomi lay down beside him, stroking Atsumu’s arm and murmuring about a round two.