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If Sukuna could kill his best friend and get away with it right now, he would. He glared at Satoru and the thing that sat beside him through the crack of the door he allowed.
“It’s your new best friend and pet: Yuji~!”
Sukuna barely opened his door before gearing up to shut it, but a strong hand prevented it.
“Oi oi oi OI! Sukuna! It’s about time you have a companion and I won’t take no for an answer!” Satoru Gojo, the bane of Sukuna’s existence, stood at the entrance of his home and grinned proudly as he presented a leash for his best friend to take. “They say he’s the best puppy they’ve got!” The leash was a simple red pleather, thin and lengthy, attached to an overgrown puppy hybrid that looked more man than dog save for the pointed ears and bushy pink tail that curled similarly to a Shiba Inu. Sukuna took quick note of the unkempt pink locks that matched his own neatly slicked back.
“Looks filthy.” He grumbled, barely giving the overly happy and panting hybrid a glance again. Poor creature didn’t understand a single word, he was just excited to be there.
Satoru pouted, giving his best doe-eyed expression, “He’s not filthy- look! They groomed him just for you!” He gently turned the hybrid’s head to show off the recently buzzed down, dark haired undercut. “Ta-da~!” The man even did jazz hands for added effect.
“Get out.”
“Oh c’mon!” Satoru pushed his way in disregarding the sneer on Sukuna’s face. He gently and wordlessly encouraged Yuji to enter along with him, to which the hybrid wagged his tail and immediately sniffed around the place. The white haired man smiled at him before returning his attention to Sukuna, “Listen. Yuji’s good company, they assured me! Plus, you could really use it… And he’s also trained to be a guard hybrid-“
“A guard? That?” The larger man criticized as he watched the hybrid now attempting to bite his own tail. “I’m bigger than it. And for the record, I’m not lonely like you’re insinuating.”
“He is! And you are!”
“I’m not.” Sukuna glanced back at the hybrid staring aimlessly at a wall, ears perked before looking at them again and panting. “Does it speak?”
“HE—does not!” Satoru exclaimed, still presenting the hybrid like he was the greatest gift ever. “But he can learn! I’ve seen many videos of dog hybrids saying just the cutest things!” He cooed, giving Yuji head pats and chin scratches that made the hybrid preen. Sukuna wasn’t going to ask but Satoru continued anyway, “Ya know like, saying their owner’s names, their own names, their favorite toys, saying ‘I ruff you!’ And-“
“Alright, I get it, the thing can learn tricks, got it.” He snatched the leash away from his friend, he knew this would be a losing battle against Satoru, tugging Yuji towards him accidentally. The hybrid obediently walked right up to him on all fours, smelling his foot, up his leg and then immediately his ass. Sukuna jumped away, cursing the hybrid while Satoru cackled at him.
“Down!” Sukuna swatted the hybrid away who backed off, “He’s a damn brat, just like you.” He snarls in annoyance, “You should keep him, he’s perfect for you.” Just as Satoru was about to rebuttal, Yuji began wagging his tail wildly as he stared up at the large man, tongue lolled out waiting happily for anything. He seemed to really like what he smelled.
“Awww~ look at him! He likes you~!” The white haired man cooed before glaring at his friend, “Well—statistically—someone has to…” he murmured.
Sukuna was left with no choice but to keep this gift begrudgingly.
“Oh this is gonna be great for you~!”
Sukuna, surprisingly, didn’t hate his new pet. Yuji happily greeted him every time he came home, he wasn't as loud as he expected and he was very clean, much to his surprise. Sure, he wasn’t the sharpest knife in the kitchen when it came to learning how to speak and understand words or spatial awareness of course, but he sure was loyal.
He learned that Satoru had been trying to teach the brat new things whenever he came over. He was teaching Yuji how to say names, how to say small sentences that would help get him by should Sukuna be unavailable. But Yuji was more interested in the head scratches Satoru offered.
“C’mon, Yuji! Say: I love you!” Satoru coached, eyes wide and lips stretched into a wide toothy grin.
Yuji tilted his head in confusion one way, then the other, ears flopping. He was too cute. Satoru didn’t understand how Sukuna could ever be so annoyed by the world’s cutest creature. Not that he’s surprised, of course.
“You can do it, Yuu-chan! I. Love. You!” Satoru started with gesturing to himself then to Yuji, smiling wide to ensure that the hybrid knew it was a positive thing. Yuji’s tail wagged, his eyes widened slightly. He understands it’s a good thing, at least. That’s a start!
“Alright then, let’s go back to Sukuna’s name. Say it with me, Su. Ku. Na!” Satoru encouraged him.
Yuji shifted, brows furrowing slightly before he attempted to speak, “Su… Su… ku…” Satoru nodded excitedly, gesturing for the hybrid to continue but his owner walked by, sneering at them both. Yuji and his adorable loyalty to the grumpy man followed Sukuna into the kitchen.
“Don’t bother, he won’t learn.” Sukuna called out from the other room as Yuji looked up at him like he hung the moon.
Apart from the hybrid not being the best learner, Sukuna quickly realized he was also incredibly sweet.
…and viciously horny.
The brat started off subtle after settling very easily in his new home. He had his own large dog bed in the living room next to Sukuna’s lounging chair so he got the full show of it. It began with needy whines, and pawing at his crotch to rubbing his bulge on the couch to full on humping Sukuna’s dirty clothes pile while he showered. Sukuna would bat Yuji away, click his tongue in disappointment, stomp his foot and threaten the usual, “I’ll get your balls chopped off if you keep it up, brat.” Despite Yuji’s lack of understanding most of the time, he seemed to understand that given how his ears drooped and tail hid between his legs.
He did his research, of course. With the amount of cum stains he found on his used clothes, the issue became glaring. But neutering a hybrid wasn’t the same as a regular animal. Hybrids ran risks of permanent pain, temperamental issues and even trauma. He sighed to himself. He’ll keep up the bluff if it helps keep the brat in line.
It didn’t take long for Yuji to simply stop caring about the threats. Sukuna didn’t abandon him, didn’t abuse him, didn’t really get angry with him. That was enough for the hybrid to feel safe. Perhaps a bit too bold, as well.
Yuji would sit beside Sukuna while he whipped up a meal for the two of them. He would smell Sukuna’s thigh over and over, smelling the area then scenting it. Rubbing his neck and pink hair all over the muscular limb, giving a lick or two that made his owner grimace slightly. Followed by an attempt to mount the leg, managing briefly to rub the aching cock that hardened just by Sukuna’s scent all over the calf. Of course, the hybrid would get scolded and sent away until his owner finished cooking.
The hybrid became obsessed with his owner’s smell, and Sukuna couldn’t understand exactly why. It’s like it triggered his rut or something. Yuji realized the bedroom he was forbidden from entering was where the scent he salivates over is strongest and needed to access it.
But Sukuna never liked having him in the master bedroom. Yuji was too comfortable, he was certain Yuji would instantly break something, the brat was a bit clumsy from time to time. Often forgetting just how big he actually is. Standing on his legs at full height, he was nearly Sukuna’s height and width. Strong too. Maybe the white haired idiot was right about the guard hybrid part. He easily overpowered Sukuna, but he was far too sweet, maybe a bit too dog-minded to even notice that part. When it was time to feed the hybrid, he would bulldoze his human owner without even realizing. Sukuna would try to stand firmly but ultimately would end up on the floor, then immediately scold Yuji for not being mindful.
One particular day, Sukuna arrived home from his job as a professional chef, reeking of fresh meat. All he wanted was to head straight into his shower and wash off the day’s stress. Stepping into his home and setting his work clothes in a neat pile to wash later, he realized his hybrid didn’t greet him with the over enthusiastic greeting he receives daily. Sukuna called out, “Hey, brat.” But was met with no response.
He peered into the kitchen, finding it empty. He frowned. This wasn’t like Yuji. He looked everywhere. Well, except where he least expected. When Sukuna walked by his bedroom door, two things caught his attention. One was the pathetic whining and shifting of fabric, two was his bedroom door was ajar. He opened it and was met with the brat dry humping his pillow, whimpering and biting into the fabric of a second pillow.
“Down, you filthy mutt!”
Yuji’s ears lowered, releasing the pillow and climbing off the bed. He crawled up to Sukuna, nuzzling his thigh as an apology. But his owner wasn’t having it. Yuji spent the night outside his door, waiting to be forgiven so he can sleep soundly in his dog bed.
A version of forgiveness came in the form of a large breakfast that Yuji was happy to scarf down. Yuji made sure to be even better for Sukuna after that. The “down” command was the only thing that worked on him.
Sukuna sat on the couch, TV on for partially background noise but mostly because he noticed his hybrid enjoyed staring at the screen even if he didn’t understand. It kept him distracted enough to not be hyperactive and bounce around. Yuji was resting next to his owner, belly facing up and shirt lifted from all his movement. Sukuna learned that the hybrid intentionally exposed his stomach to encourage Sukuna to give him belly rubs. And so he did. It was awkward the first time. He was rubbing pure muscular abs of a supposed puppy hybrid.
How was this overgrown dog considered a puppy still? And where the hell did Satoru get him?
Questions that Sukuna couldn’t care enough to seek the answers for.
Eventually, it became a habit while he sat and read a book. He rubbed the belly regardless of how he felt about doing it, glancing at the blissful expression Yuji made, legs slightly kicking into the air.
Sukuna rubbed in a circular motion, switching to an up and down motion and back again. Yuji kicked his legs slightly harder, pushing closer towards Sukuna which made the absentminded hand rub lower on his belly. The hybrid’s tail paused, happily wagging as he felt a different kind of bliss. Wide amber eyes stared up at the human, realizing he wasn’t pulling away, Yuji pushed himself up just a bit more.
The hand moved up and down, brushing just a bit over the waistband of his sweats Sukuna forced him to wear. Yuji panted, pushing himself just a bit more, head and shoulders on Sukuna’s lap and the hand began to rub at his groin. He felt his cock swell at the touch, receiving the most stimulation he’s had in a while. His tongue lolled out, drooling as his hips canted upwards.
The hand brushed his tip so perfectly, Yuji let out a whine and along with an attempt at speaking, “Suk… S’kun…” It caught his owner’s attention. Sukuna paused his hand, momentarily amazed as the hybrid was shy of saying his name fully before he realized what was actually happening.
“What the—!” Sukuna stood up abruptly, nearly pushing Yuji to the floor, “Down! You perverted little brat...“ He grit his teeth watching Yuji scramble off the couch with his ears lowered and eyes wide and sad. He walked away, punishing the hybrid with silence for the rest of the day. Sorrowful whines and attempts at saying his name again were heard throughout the night. After everything settled with Sukuna eventually forgiving him and Yuji happy that he’s able to get close to his owner again, Sukuna was certain the hybrid had learned his lesson.
Sukuna was out a lot longer than normal. His coworkers insisted he stuck around after closing time to hang out at a bar and loosen up for once. He agreed, but solely to get them all of his back. He drank round after round of Yamazaki that his coworkers practically handed to him along with the occasional glass of Hibiki when he wanted to appreciate different flavor notes in his whisky. However, he ended up enjoying himself a little too much. He returned home stumbling and all flushed from alcohol.
His mind was hazy, vision unfocused and he barely remembered the car ride home driven by his sous chef, Uraume.
Immediately, he was greeted by his no longer worried hybrid, bouncing around with his long tongue lolling out and drooling just at the sight of his beloved owner. Happy to see him home again. Yuji made a face briefly, no doubt smelling the liquor that slightly burned at his overly sensitive nose. Sukuna patted his head once without even glancing his way, favoring the plushness of his couch, diving onto it without much care. He laid facedown and content. The alcohol only numbed his soreness of the long day at work, but laying down made the aches return. He grumbled against the couch cushion, “Never again…” his slurred words muffled.
Yuji walked up to him, smelling his owner’s face, hair, neck and back. He basked in the natural odor that came from the human. He had a sweet smell that reminded Yuji of the sweet mochi Satoru gave him on the way to meet Sukuna for the first time. He loved how he could easily pick out his owner from the crowd, everything about him was distinct. The hybrid couldn’t control how it made him feel, the scent alone was alluring. Like a mate presenting themselves to him.
That’s how he viewed Sukuna: A mate. His mate.
His clawed, calloused hands touched Sukuna’s head, feeling his soft locks. Softer than Yuji’s own. Sukuna grumbled, turning his head to look at the hybrid.
“Wha’re you doin’?” His glassy red eyes met Yuji’s own dilating honey eyes. Relations between humans and hybrids were often viewed as taboo, bordering on illegal depending on the hybrid. Sukuna knew this was wrong. It was the hybrid who didn't know or even care.
Yuji began sniffing again, starting at the nape of Sukuna’s neck, dragging his nose down the strong wall of back muscles and reaching the waistband of his slacks. His sharp canines nibbled at the offending fabric, trying to tug it down. His hands reach to tug it down, but Sukuna let out a lazy growl.
“Stop.” His strong hands held onto his slacks, “Freak.” He slurred. But it didn’t deter Yuji.
He can’t tell if maybe his owner ate something different today or if the burning smell emanating from his mouth changed his scent but Sukuna set off his instincts more than ever before. Yuji can feel his dick tenting in his sweatpants. He needed to sate the craving he’s had from the moment he met Sukuna.
Sukuna may be his owner, but he was also Yuji’s mate. He could feel it deep in him; the allure of this human, the desperate need to breed him. And he should be able to, right? It makes sense to Yuji that Sukuna could and should have his pups.
The hybrid hopped onto the couch, pinning Sukuna's legs with his weight. This jostled the drunken man, glaring over his shoulder as he let out an annoyed grunt. Yuji pressed his face hard against Sukuna’s round ass, inhaling the sweetest scent ever. Clawed hands digging at the fat of his cheeks, kneading the thick flesh. The human bucked his hips back in an attempt to shove the hybrid off but only allowed Yuji to press his nose deeper, panting hot air and drooling onto the expensive cloth.
“Get off’a me!” Sukuna reached over to grab Yuji’s hair but the action only made Yuji pull away and snap his teeth, letting out a rumbling snarl at the daring hand. He shoved it away, returning his face between the plush ass. Sukuna felt his body hot with embarrassment and something he refused to acknowledge. Whatever that was, it was definitely because of the whisky.
Yuji’s claws began pawing at the apex of the slacks, each hand hooking into the fabric and pulling the apart harder and harder until it finally gave way, tearing them in half and appearing like shredded black stocking on his legs. Sukuna bucked his hips back, attempting to stand. The movement allowed Yuji to pull his hips up, making Sukuna present for him. Sukuna felt exponentially hotter at this moment. Yuji’s high body temperature was making the both sweat.
“Down, brat!” His voice began to raise in a bit of panic. Despite his inebriated state, he was well aware of where this was leading. “Down! Down!”
Normally, Yuji would listen at this point. But he was almost as drunk as Sukuna was off of the natural pheromones of the human. He couldn’t resist this pull any longer, nor was he planning to.
“I said, DOWN!”
The only thing that stood in Yuji’s way was the boxers Sukuna annoyingly had under. He bit down on them, yanking his head back harshly and ripping a hole into them, growling and spitting the torn fabric out. The sight that greeted him made his cock jump and leak in his sweats.
A puckered hole, pink and tight. His mouth was parted and slobbering. Reverently, he leaned in, hands parting the cheeks so he could stare at the hole now twitching just for him. Sukuna was squirming around but Yuji paid him no mind.
Finally, finally, he gets to taste.
His long tongue darted out for a small, experimental lick, feeling his human jolt and curse under his breath. The hole tightened. Yuji’s tongue licked again and then once more.
Sukuna thought it was over when he felt the tongue and heat of his breath disappear. The mutt got his fill. He had a grimace on his face. He’s gonna put the damn thing up for adoption, and that was him being generous. He should punish him. He should throw the brat out on the streets—!
Yuji’s tongue stuffed fully into Sukuna’s tight ass. It was much longer than he thought. The hybrid licked his mate from the inside out, lapping delight as if he was dehydrated. The tongue digging inside, his nose inhaling the dizzying scent over and over. Yuji was lost to his instincts. Sharp claws pricked at Sukuna’s ass the harder he gripped. His tongue pushed in more, explored more, stretched what he could before pulling it out. He lapped at the now wet hole, the long muscle laving over Sukuna’s perineum and up.
His human sharply inhaling and tensing with every bit of sensation Yuji gave. “Down, brat…” He muffled, biting into the cushion. Not a chance in hell Sukuna was going to give the brat satisfaction. He hated every second of what was happening to him.
At least it's what he kept telling himself.
His own cock twitched from the sensation, blood rushing down and hardening him. But he hated every second of it. He felt disgusting, used, pathetic. And yet his cock leaked fresh precum.
Yuji’s tongue refused to stop the pleasurable assault. Drool was leaking from Sukuna’s tight ass down his taint, drenching his balls and cock. He licked again and again, lapping at the thick cock and balls occasionally, tasting the salty sweet precum, basking in the smell. There was so much more he wanted but the dog brain in him won over. It spoke—growled—for him to mate. To stretch out the tight hole presented before him. To rut. To knot. To breed. Breed. Breed.
Patience dwindling, Yuji tore off his own clothes. His fluffy tail up and stiff, dog ears on the top of his head perked up. He mounted his mate, hovering his head over Sukuna’s nape. Eyes heavy and dark, saliva dripping hotly on his human.
The sudden change of Yuji’s position made Sukuna nervous, glaring from over his shoulder, “Don’t you dare, brat.” His teeth clenched tightly, expecting. He can feel Yuji’s claws digging into his waist, securing him. The wet tip of the hybrid’s cock prodded his virgin hole, rocking slowly. The inebriation faded slowly and he wishes it didn’t so he could forget about this later. “You insolent mutt. When I say down, you listen. Now for the last time: down, brat-!”
Yuji’s hips slammed forward with feral desperation. Sukuna hissed, attempting to lurch forward to get away from the burning stretch, but the hybrid’s strong arms circled his waist, pulling Sukuna tighter against him and locking him in place. Yuji panted in his ear heavily, licking the sweat that formed on his new mate’s skin. He didn’t hold back. The way this tight hole hugged his lengthy cock was too perfect to stop. Pulling away only to slam back in, skin slapping against skin in a vicious rhythm of feral love.
A growing knot already began catching on the tight rim, forcing a yelp from the human beneath him. Yuji’s ragged breath rested on the nape of Sukuna’s neck, his canines began to press into soft flesh until his teeth pierced the skin.
A mating mark. A mark that will fade, of course, but Yuji knows there’ll be thousands of times he will reclaim his mate if he needs to.
Sukuna was his and his alone.
The pleasure and pain turned out to be too much for the sobering man. His own fingers digging into the cushions, teeth gritting down and saliva spilled between the tiny gaps. Face and body flushed a deep pinkish red from more than just the whisky he had.
He was actually cumming. The orgasm caught him by surprise as his cock spilled all over the leather of the couch. Sukuna choked out a moan he didn’t mean to let out, all wanton and pathetic. He felt his vision blacken on him before just barely coming to. It only caused the hybrid to growl and rut even faster. His dick perfectly rubbed the pleasure point within Sukuna, punching out more unwanted moans from the man. He felt Yuji’s jaw release the soft skin to lick and soothe it.
His mind was going blank, unable to stop every sound he made. All he knew was the feeling of being stretched out so perfectly. How good it felt to have the warmth Yuji gave him inside and out.
The couch moved with every aggressive thrust, forcing the wood to groan from the inside. Yuji panted, he couldn’t stop himself no matter how sensitive his cock was becoming. He needed to breed. Lifting his upper body, his entire chiseled torso glistening with sweat, he watched the forming knot slip in and out of Sukuna’s abused hole. Mouth parting in awe staring down at it. He felt the walls around his cock beginning to strangle him and he doubled over onto Sukuna once more, letting out a whine. It was becoming too much for both of them.
“Yuji!” Sukuna gasped, unable to even speak beyond a name. His eyes rolling back, letting out groans he didn’t know he could make. His own dick didn’t get the grace of softening with the constant stimulation. He was hard all over again and it was taking him out. His eyes fluttered, not a single ounce of fight left in him. Not that it would do anything to stop Yuji. He only moaned, his own tongue lolling out like his hybrid’s. He can feel the way his cockhead rubbed against the couch, how Yuji’s grinded so perfectly against his sweet spot.
“Nghhh!!” Was all he could conjure up before something spurted out of his cock, a hell of a lot more than cum. A clear fluid that wet the leather beneath him, squirting all over himself. The whine he let out was pathetic. His body was too overstimulated when his second orgasm came, more painful this time. He unloaded pearly spurts over the puddle of his own squirt, blacking out again.
The tight rim clenched on Yuji; he pumped his hips once, twice, thrice before his knot fully formed and he slammed it in for the last time. His own cum drowning Sukuna’s guts, painting every bit of his insides white with full intention of breeding him.
Yuji collapsed onto the man, trying to catch his breath. He was dazed and in a sea of pleasure. He turned his head slowly, giving gentle licks he always gave his owner as a way to offer comfort. Sukuna made no move to even turn his head away or make a face as he usually does. The two laid still, the knot firmly plugged and unmoving.
Sukuna finally lifted his head to look at Yuji over his shoulder, attempting to glare away the glazed pleasure that he wore. Yuji looked at him and only smiled widely, tail wagging happily.
“Su-ku-na!” He finally spoke. “Loff S’ku-na!”
Somehow, Satoru haunts him even now. His lessons actually worked. Sukuna just nodded, plopping his head back down with no energy to punish the hybrid. Which only encouraged Yuji, “Loff Suku-na! Loff, loff!” He practically yipped at his new mate’s face.
“Yeah yeah… love you…” Sukuna didn’t even register that he said it back. He doesn’t know what this hybrid did to him, only that he no longer wants to get rid of him. And perhaps, wouldn’t mind this happening a second time given the bliss he feels is one that not even liquor could give him. It's new. Addicting in a twisted, taboo sort of way. He briefly thinks it's just the lingering whisky talking for him.
Yuji’s tail wagged, slowly his knot deflated and he pulled away, watching his seed pour out. He pouted slightly. Yuji can smell his pups didn’t take yet. No matter, he’ll do this as many times as it takes until Sukuna is fully pupped.
He knew Sukuna would hate to wake up on the couch, so he did what any good mate would do: dragged him into his bedroom and curled up behind him.
Sukuna blinked at the change of setting into his bedroom, feeling his hybrid snuggled up behind him. He’ll have to remember to scold him in the morning for daring to lay on his bed. If he can even move that is.