Work Text
Skin tore off in heavy flakes, plopping heavily to the ground with a splat . It hurt as it always did and Kirishima roared out into the night air. Fuck this stupid quirk and fuck the person who’d cursed him with it.
He felt his snout grow long, whiskers and hair breaking through the barrier of his kin. His ears rose up, twitching and curling. He felt the bones in his legs start to snap and reform - an endless agony that made Kirishima want to curl into himself.
The full moon shone bright amongst the stars - mocking him while Kirishima was powerless to stop the brutal transformation.
The grass under him was soft and wet from an earlier rain, but did nothing to soothe his hands from screaming out as claws broke through his fingertips, curling down into his newly shaped paw pads.
“ Fuckfuck..arggh !” he growled, quickly losing his capability of forming words. His breath turned into pants - doglike and inhuman. This transformation would be over soon.
His back hunched as he grappled on his hands and knees, toenail claws digging into the dirt. He’d come down to the deepest parts of the forest - away from UA or any kind of civilization - unwilling to potentially hurt anyone, especially his friends.
It’d been humiliating having Aizawa explain to the class.
“As these things happen sometimes, Kirishima has unfortunately been affected by a quirk while on patrol yesterday. We’re not sure of the specifics but we’d recommend that you do not come into close contact with him when the quirk is in effect - mainly on the full moon.” Aizawa had said, bored, as if this thing was just another Tuesday to him.
“We don’t know how long this quirk will take to get out of his system. I will not be taking further questions.”
It had been a reminder of his weakness, his failure. Shame had prickled under his skin and he’d avoided his classmates' eyes through the rest of class. No one had tried to ask him what the quirk was - able to sniff out that it wasn’t something Kirishima wanted to talk about.
Every month, on the full moon, Kirishima turned into a raging monster incapable of rational thought and could do nothing but roam around the forest until sunrise - usually killing small rabbits or squirrels. Every morning he’d wake, naked and alone, usually covered with animal blood and his own piss. It was mortifying to have to walk back to UA, Recovery Girl waiting with a blanket and a warm meal.
This time - Kirishima’s last rational thought - would undoubtedly be the same.
✧✧✧
Sprinting through the trees, Kirishima felt branches and leaves snag in his thick fur. A black streak through the already dark night, he felt invisible here - safe. He sniffed the air, locking onto a delicious scent a couple yards ahead.
He slowed to a jog as he got close, sniffing heavily for that smell again. Through his beady eyes, he saw a clearing in the forest, a porch light shining down on shiny stone steps and a rickety backdoor. Slowly, ever so slowly, Kirishima crouched low to the ground and stepped forward, just on the edge of the forest before the trees would no longer cover him.
Peering through the thick foliage, he spied a house dog sleeping on its paws - brown and white fur well taken care of. Its back rose and fell in deep sleep and the blue collar around its neck jingled slightly with every slow breath. A chain lead kept the dog secured, tied to a metal pipe next to it and Kirishima’s wolf brain lit up with delight.
‘Won’t be able to get away,’ it said. That sweet scent was coming from here, but Kirishima had no want to consume the pup. No, this craving was something more…primal.
Carefully, so very carefully, Kirishima stepped out from the shadows and stalked closer, head down low and shoulders hunched.
The dog snuffled and shifted to its side, now splayed out, but still dead asleep. Kirishima’s heavy paws thudded in the dirt and soon he was standing next to the pup. He swiveled his head and bent down to sniff at him. The dog didn’t wake, didn’t even twitch.
Sniffing down the length of its body, Kirishima stopped at its sheath. Sniffing deeper, nose pressed to the fur, Kirishima lapped a tongue out to taste its scent better. This was where that irresistible smell was coming from. Lapping harder, Kirishima tasted the tip of its cock, still protected inside. It was like a forbidden ice cream cone - too hard to resist.
The dog, at this point, started to awaken. Its ears twitched and swatted at invisible flies. Its nose flared and then sniffed heavily at what must have been Kirishima’s potent wolf musk.
Kirishima didn’t care if the dog was awake or asleep for this - now moving on underneath the dog’s tail, finding its tailhole and almost pushing his nose in it.
The dog shot awake at this, much too sensitive of a spot to be comfortable. It yelped and sprang up onto four legs, tripping over itself before backing away from the wolf. Kirishima growled under his breath.
The dog growled back before it could properly see him, but immediately cowered when face to face with Kirshima’s wolf form - easily twice the dog’s size with huge claws and teeth to show for it. Kirishima stepped forward, and the dog tried to step back - attempting to run. The lead on its collar pulled him back with a yelp, too short to let it go anywhere. The dog was truly trapped.
Kirishima took the opportunity to step forward and sniff again, trailing down the dog’s neck to its chest, under its stomach and to its sheath again. That delicious smell filled Kirishim’s nose and he took his time soaking in it.
Lapping harder than what was likely comfortable, the dog yelped and raised a hind leg to let Kirishima get more access. It could tell when the presence of an alpha dog was in front of it and this was not the time to pick a fight - trapped and leashed with nowhere to go.
The dog, to its shame, starting to feel itself get hard under Kirishima’s ministrations, the tip of its cock peeking out to say hello. Kirishima delighted in this, the smell only getting stronger. It was dog musk he smelled, so potent it nearly made him drool.
If he was human this would have definitely repulsed him, but his wolf form was more than willing to stoop low enough to hunger for dog cock. Licking his flexible tongue he felt more and more of that cock slide out, until everything but the dog’s knot was in reach of his hot tongue.
The dog seemed to like the touch, but was much too afraid to vocalize it in any way. Kirishima could smell the arousal on it though, so he wasn’t bothered by the silence. He let the sound of his tongue do the talking, shlick ’s and schlurp ’s filling the air. Wolf drool pooled on the ground, but only made the slick tonguing that much better.
The dog bucked its hips, straining to get more of that tongue around its sensitive tip. Kirishima obliged and the dog started letting out its voice, pleasured pants turning to fog in the cold.
Kirishima slid his soft tongue into its sheath again, trying to dig out its knot from where it was stuck. The dog humped his face like a pup, legs shaky from holding one of them up for so long.
Kirishima felt its sheath move, and suddenly its knot was pressed to his muzzle, nose breathing in that godly dog musk. The dog humped, once, twice, and its knot throbbed before Kirishima’s eyes. The tip of its cock pulsed and shot its load all over Kirishima’s fur. Off-white dog jizz matted the fur on Kirishima’s chest, but he didn’t mind it at all - loving the smell and feel of it too much.
Kirishima made sure to angle the cock to his mouth with his tongue for the next shots, letting that smoky taste lather his tongue instead. The dog seemed to like it even better, unloading spurt after spurt until it started running out of Kirishima’s mouth and pooling in the dirt.
Kirishima lapped it all up and when it finally seemed to taper off, he moved out from under its crotch - letting the dog put down its hind leg. The dog itself ducked under to clean itself up, skillful tongue washing away the spunk.
Kirishima took the chance to move behind it and stooped to smell its tailhole. The dog hadn’t expected it, too hazy from its orgasm. It tried to move away, a little over-sensitive, but Kirishima growled at it to stay put.
The dog froze, deer-in-the-headlights - its eyes pleading “Aren’t we done now?” But the look in Kirishima’s eyes told it that he was far from over with the pup.
Kirishima lapped at its tailhole again, soaking in the smell. His wolf brain couldn’t get enough of it - like his own personal brand of heroin. The dog stood still and whined under its breath when Kirishima poked at a particular sensitive spot. The hole still throbbed occasionally from its recent orgasm, soft and damp from Kirishima’s warm tongue - but it only made Kirishima more feral for it.
He could feel that ferality surge back in waves as he felt his own cock start slipping out. He loved to be able to lick at this delicious hole and then down to his cock and back up again - transferring the smells and connecting them further.
His cock grew bigger and bigger until it hung well beneath the little dog’s ass. It seemed like when they fucked it would reach halfway to the dog’s brain. Something in Kirishima’s wolf brain lit up at the potential to ruin this innocent little pup.
Kirishima managed to control himself long enough to separate from the dog’s hole - the dog visibly deflating. This slight reprieve shortly ended, however, when Kirishima reared up on his hind legs and wrapped his two massive forepaws up on the dog’s hips.
The dog nearly crumpled under the weight, and yelped when it felt Kirishima’s thick dog cock poke at its tailhole. Kirishima shifted his hindlegs, swiveling his hips to get a good angle. He would be fucking this dog whether it wanted it or not.
Finally , Kirishima felt his tip connect with its tailhole, slick heat enveloping that small inch. He shoved ahead, sinking a few more inches into that wet warm tailhole. The dog yelped, nearly curling behind and nipping at Kirishima - undoubtedly in pain.
Kirishima growled at it, pricking the dog’s thighs with extended claws to show who was in charge. The dog whimpered, crying out, and tried to stumble away. Kirishima dragged it back, shoving the last few inches of his cock into the poor hole.
The dog nearly screamed , paws desperately digging at the dirt underneath it. Kirishima didn’t waste any time with it, fucking hard and mean.
His heavy, full balls plapped against the pup’s ass, hips moving smoothly. His swollen dick felt amazing in this dog’s ass. It felt like heaven, the desperate clenching meant to push him out only succeeding in keeping him in.
The pulsing of its tailhole kept his cock hard and made his knot ache so good. Kirishima felt his knot twitch from where it had yet to pop out of his sheath. His own balls pulsed and churned, dog cum begging to be bred into this wonderful hole.
Kirishima’s legs twitched, constantly rearranging in the dirt to keep his balance. He had fully wrapped himself around the poor dog, heavy on his back to keep him grounded. They slowly inched as one across the dirt - leaving trails in their wake. Kirishima’s thrusts were too powerful and the dog whined every time a particularly brutal one sent Kirishima’s cock too deep in its guts.
It had to have reached to its stomach by now - entirely full of wolf cock and precum. Kirishima knew it because he could feel it sliding out around him and dripping to the ground - some even getting caught in his leg fur.
It made the glide almost frictionless and whining from the dog eventually quieted. It had to be uncomfortable, Kirishima knew, but he could feel its tailhole start pulsing rapidly again like it was on the edge of another puppy orgasm so he knew the bitch must’ve actually liked it.
His orgasm was starting to rise up - knot aching in his sheath. He roared out when it popped out and he felt it press into the slick hole he was pistoning in. He beared down, humping into it to maximize the surface area of his knot and the tailhole meeting.
The pup cried out again, legs trembling to stand up. Kirishima panted, wolf spit drooling onto the pup’s head as he felt the knot slowly push in. It was so close - Kirishima was so close to breeding this slut up and filling its tailhole with wolf cum.
Finally, finally , the knot popped in, being suckled and massaged by the dog’s pulsing ass. The pup howled like it was in pain, but Kirishima could feel its cock spurting another hot load on the ground - its own knot pulsing. He could feel the rapid pulses of its tailhole around his knot, milking Kirishima of all the doggy cum he had.
Kirishima howled out with the dog, feeling over-sensitive with the way his pulsing knot churned and his tip splurted out his thick load. Filling up to the brim with nowhere to go, some of it leaked out the sides of his knot and pooled on the ground - the scent of potent wolf cum making the dog dizzy in drunken lust.
It seemed the dog couldn’t take it anymore and collapsed to the ground, shaky legs crumpling. Kirishima smacked his chin on its head going down and growled. Realizing what happened he settled down - content to just bask in the afterglow of his amazing orgasm.
Not wanting to suffocate the poor thing, he got off the pup’s shoulders and turned - lying on the ground himself, ass to ass with the dog.
He panted out in the night, chin tucked over his big wolf paws, waiting for his knot to go down.
✧✧✧
Kirishima awoke, dazed and groggy. His jaw ached and his tongue felt like sand. Moving his tongue, he realized it was actual sand in his mouth and spluttered - sending dirt and spit spraying out of his mouth.
“Blegh,” Kirishima blinked, shaking his head and reaching a sore hand to his head. ‘What the hell happened?’ he thought.
He shifted, chest to the ground, and looked to the sky. Blue skies and green trees - ‘The forest,’ he thought - met him. He blinked and then blinked again, pleading for his brain to wake up.
Everything felt gross and bad and weird, like he got hit by two trains and drowned in a lake. He groaned, setting back his forehead to the dirt. He felt horrible and that only meant one thing - he had shifted.
He put his hands on the ground to push himself up, but stopped when he felt something odd between his legs. Soft fur brushed against his thighs and he felt something warm - or wet? - surrounding his dick. He froze, muscles straining, and slowly looked over his shoulder.
A dog was there, white and brown fur shifting with shallow breaths, lying on the dirt - seemingly sleeping peacefully.
It was chained, and as Kirishima turned more to look where it led he felt a distinct pop on his cock. He looked down and
“Oh my god,” he said aloud, almost a whisper. Disbelieving - it was like his brain shut down as he saw his soft dick pop out of the pup’s slick hole - what seemed like gallons of cum following after. His dick pulsed pleasurably, his balls aching like they’d been drained.
Kirishima couldn’t think, couldn’t move, couldn’t…feel. He just couldn’t-
thump sounded to his right and Kirishima startled - eyes trained on the tan door and the lit porch light not ten feet next to him. Light bounced around behind the rattling backdoor, shaped like a person. He could almost see the door handle turn in slow motion.
A lot of things fast-forwarded through Kirishima’s mind in those brief few seconds. He didn’t move his body so much as he felt his body move when he crashed through the branches of the forest - naked as the day he was born.
His brain was on autopilot, fully focused on the strain of his legs running - attempting to get some distance from him and whatever the fuck he had done in the night.
Gasping and panting, heart beating a mile a minute - he ran and ran and ran. His eyes filled with tears that made the trees around him look like green blur and he wasn’t even sure where he was headed until he broke through the edge again and came face to face with one of the backdoors of UA.
Recovery Girl was standing there, as she always was after Kirishima’s shift, with a blanket and some protein bars. She caught his eye and smiled, waving him forward when he didn’t come.
He stumbled towards her, soles aching.
“Hey sweetie,” she said. He felt like he was underwater. “How are you feeling?”
Kirishima let her put the blanket around his shoulders and looked at her. She smiled again, but it weakened with every second he didn’t respond.
“Honey?,” she said. “Are you alright?”
He promptly bent over and vomited on her shoes.
----- CHAPTER BREAK -----
Skin tore off in heavy flakes, plopping heavily to the ground with a
splat
. It
hurt
as it always did and Kirishima roared out into the night air.
Fuck
this stupid quirk and
fuck
the person who’d cursed him with it.
He felt his snout grow long, whiskers and hair breaking through the barrier of his kin. His ears rose up, twitching and curling. He felt the bones in his legs start to snap and reform - an endless agony that made Kirishima want to curl into himself.
The full moon shone bright amongst the stars - mocking him while Kirishima was powerless to stop the brutal transformation.
The grass under him was soft and wet from an earlier rain but did nothing to soothe his hands from screaming out as claws broke through his fingertips, curling down into his newly shaped paw pads.
“
Fuckfuck..arggh
!” he growled, quickly losing his capability of forming words. His breath turned into pants - doglike and inhuman. This transformation would be over soon.
His back hunched as he grappled on his hands and knees, toenail claws digging into the dirt. He’d come down to the deepest parts of the forest - away from UA or any kind of civilization - unwilling to potentially hurt anyone, especially his friends.
It’d been humiliating having Aizawa explain to the class.
“As these things happen sometimes, Kirishima has unfortunately been affected by a quirk while on patrol yesterday. We’re not sure of the specifics but we’d recommend that you do not come into close contact with him when the quirk is in effect - mainly on the full moon.” Aizawa had said, bored, as if this thing was just another Tuesday to him.
“We don’t know how long this quirk will take to get out of his system. I will not be taking further questions.”
It had been a reminder of his weakness, his failure. Shame had prickled under his skin and he’d avoided his classmates' eyes through the rest of class. No one had tried to ask him what the quirk was - able to sniff out that it wasn’t something Kirishima wanted to talk about.
Every month, on the full moon, Kirishima turned into a raging monster incapable of rational thought and could do nothing but roam around the forest until sunrise - usually killing small rabbits or squirrels. Every morning he’d wake, naked and alone, usually covered with animal blood and his own piss. It was mortifying to have to walk back to UA, Recovery Girl waiting with a blanket and a warm meal.
This time - Kirishima’s last rational thought - would undoubtedly be the same.
✧✧✧
Sprinting through the trees, Kirishima felt branches and leaves snag in his thick fur. A black streak through the already dark night, he felt invisible here - safe. He sniffed the air, locking onto a delicious scent a couple yards ahead.
He slowed to a jog as he got close, sniffing heavily for that smell again. Through his beady eyes, he saw a clearing in the forest, a porch light shining down on shiny stone steps and a rickety backdoor. Slowly, ever so slowly, Kirishima crouched low to the ground and stepped forward, just on the edge of the forest before the trees would no longer cover him.
Peering through the thick foliage, he spied a house dog sleeping on its paws - brown and white fur well taken care of. Its back rose and fell in deep sleep and the blue collar around its neck jingled slightly with every slow breath. A chain lead kept the dog secured, tied to a metal pipe next to it and Kirishima’s wolf brain lit up with delight.
‘Won’t be able to get away,’ it said. That sweet scent was coming from here, and while Kirishima still wanted to consume the pup, this craving was more…primal.
Carefully, so very carefully, Kirishima stepped out from the shadows and stalked closer, head down low and shoulders hunched.
The dog snuffled and shifted to its side, now splayed out, but still dead asleep. Kirishima’s heavy paws thudded in the dirt and soon he was standing next to the pup. He swiveled his head and bent down to sniff at him. The dog didn’t wake, didn’t even twitch.
Sniffing down the length of its body, Kirishima stopped at its sheath. Sniffing deeper, nose pressed to the fur, Kirishima lapped a tongue out to taste its scent better.
This
was where that irresistible smell was coming from. Lapping harder, Kirishima tasted the tip of its cock, still protected inside. It was like a forbidden ice cream cone - too sweet to resist.
The dog, at this point, started to awaken. Its ears twitched and swatted at invisible flies. Its nose flared and then sniffed heavily at what must have been Kirishima’s potent wolf musk.
Kirishima didn’t care if the dog was awake or asleep for this - now moving on underneath the dog’s tail, finding its tailhole and almost pushing his nose in it.
The dog shot awake at this, much too sensitive of a spot to be comfortable. It yelped and sprang up onto four legs, tripping over itself before backing away from the wolf. Kirishima growled under his breath.
The dog growled back before it could properly see him, but immediately cowered when face to face with Kirshima’s wolf form and the bloodlust emanating from him- easily twice the dog’s size with huge claws and teeth to show for it. Kirishima stepped forward, and the dog tried to step back - attempting to run. The lead on its collar pulled him back with a yelp, too short to let it go anywhere. The dog was truly trapped.
Kirishima took the opportunity to step forward and sniff again, trailing down the dog’s neck to its chest, under its stomach, and to its sheath again. That delicious smell filled Kirishim’s nose and he took his time soaking in it.
Lapping harder than what was likely comfortable, the dog yelped and raised a hind leg to let Kirishima get more access. It could tell when the presence of an alpha dog was in front of it and this was not the time to pick a fight - trapped and leashed with nowhere to go.
The dog, to its shame, started to feel itself get hard under Kirishima’s ministrations, the tip of its cock peeking out to say hello. Kirishima delighted in this, the smell only getting stronger. It was
dog musk
he smelled, so potent it nearly made him drool.
If he was human this would have definitely repulsed him, but his wolf form was more than willing to stoop low enough to hunger for dog cock. Licking his flexible tongue he felt more and more of that cock slide out until everything but the dog’s knot was in reach of his hot tongue. He playfully knicked a canine on it and the jolt the pup gave made Kirishima’s own cock start to swell.
Kirishima could smell the arousal and fear on the pup, so he wasn’t bothered by the silence. He let the sound of his tongue do the talking,
shlick
’s and
schlurp
’s filling the air. Wolf drool pooled on the ground, but only made the slick tonguing that much better.
The dog bucked its hips, straining to simultaneously get more of that tongue around its sensitive tip and away from Kirishima’s sharp teeth. Kirishima ignored the pup, mouthing along its cock - teeth and tongue alike. The dog started letting out its voice, pleasured and panicked pants turning to fog in the cold.
Kirishima slid his soft tongue into its sheath again, trying to dig out its knot from where it was stuck. The dog humped his face like a pup, legs shaky from holding one of them up for so long.
Kirishima felt its sheath move, and suddenly its knot was pressed to his muzzle, nose breathing in that godly dog musk. The dog humped, once, twice, and its knot throbbed before Kirishima’s eyes. The tip of its cock pulsed and shot its load all over Kirishima’s fur. Off-white dog jizz matted the fur on Kirishima’s chest, but he didn’t mind it at all - loving the smell and feel of it too much.
Kirishima made sure to angle the cock to his mouth with his tongue for the next shots, letting that smoky taste lather his tongue instead. The dog seemed to like it even better, unloading spurt after spurt until it started running out of Kirishima’s mouth and pooling in the dirt.
Kirishima lapped it all up and when it finally seemed to taper off, he moved out from under its crotch - letting the dog put down its hind leg. The dog itself ducked under to clean itself up, skillful tongue washing away the spunk. It flickered its eyes to Kirishima, too scared to let him out of its sight for more than a second at a time.
Kirishima took the chance to move behind it and stooped to smell its tailhole. The dog hadn’t expected it, too hazy from its orgasm. It tried to move away, a little over-sensitive, but Kirishima growled at it to stay put.
The dog froze, deer-in-the-headlights - its eyes pleading “Aren’t we done now?” But the look in Kirishima’s eyes told it that he was far from over with the pup.
Kirishima lapped at its tailhole again, soaking in the smell. His wolf brain couldn’t get enough of it - like his own personal brand of heroin. The dog stood still and whined under its breath when Kirishima poked at a particularly sensitive spot. The hole still throbbed occasionally from its recent orgasm, soft and damp from Kirishima’s warm tongue - but it only made Kirishima more feral for it.
He could feel that ferality surge back in waves as he felt his own cock start slipping out. He loved to be able to lick at this delicious hole and then down to his cock and back up again - transferring the smells and connecting them further.
His cock grew bigger and bigger until it hung well beneath the little dog’s ass. It seemed like when they fucked it would reach halfway to the dog’s brain. Something in Kirishima’s wolf brain lit up at the potential to
ruin
this innocent little pup. Images flickered through his wolf brain of eating away at the pup’s organs while buried deep in its guts. To fuck and eat the same entity, wholly consuming a being alive made sparks fly in Kirishima’s synapses - much too primal to pass off.
Kirishima managed to control himself long enough to separate from the dog’s hole - the dog visibly deflating. This slight reprieve shortly ended, however, when Kirishima reared up on his hind legs and wrapped his two massive forepaws up on the dog’s hips.
The dog nearly crumpled under the weight and yelped when it felt Kirishima’s thick dog cock poke at its tailhole. Kirishima shifted his hindlegs, swiveling his hips to get a good angle. He would be fucking this dog whether it wanted it or not.
Finally
, Kirishima felt his tip connect with its tailhole, slick heat enveloping that small inch. He shoved ahead, sinking a few more inches into that
wet
warm tailhole. The dog yelped, nearly curling behind and nipping at Kirishima - undoubtedly in pain.
Kirishima felt the soft walls of the pup’s hole rip around his wolf cock, almost collapsing the pup where it stood.
Kirishima growled at it, pricking the dog’s thighs with extended claws to show who was in charge. The dog whimpered, crying out, and tried to stumble away. Kirishima dragged it back, shoving the last few inches of his cock into the poor hole. He could feel blood start to pool around his cock, making the glide frictionless and that much better.
The dog
screamed
, paws desperately digging at the dirt underneath it. Kirishima didn’t waste any time with it, fucking hard and mean.
His heavy, full balls
plapped
against the pup’s ass, hips moving smoothly. His swollen dick felt
amazing
in this dog’s ass. It felt like heaven, the desperate clenching meant to push him out only succeeding in keeping him in.
Kirishima could feel the beating of the pup’s organs pulsing around his tip, making his cock swell with pleasure. This pup was a glorified fuckhole for him to shove his cock into and he didn’t care how much the pup hurt because of it. It would be dead by the morning anyway.
The pulsing of its tailhole kept his cock
hard
and made his knot ache so good. Kirishima felt his knot twitch from where it had yet to pop out of his sheath. His own balls pulsed and churned, dog cum begging to be bred into this wonderful hole.
Kirishima’s legs twitched, constantly rearranging in the dirt to keep his balance. He had fully wrapped himself around the poor dog, heavy on his back to keep him grounded. They slowly inched as one across the dirt - leaving trails of blood and wolf precum in their wake. Kirishima’s thrusts were too powerful and the dog whined every time a particularly brutal one sent Kirishima’s cock too deep in its guts.
It had to have reached its stomach by now - entirely full of wolf cock and precum. Kirishima knew it because he could feel it sliding out around him and dripping to the ground - some even getting caught in his leg fur.
The rapid blood loss and pain forced whimpers out of the pup sometimes but were much quieter than the previous screams. It had to be uncomfortable, Kirishima knew, but his head was overrun with thoughts of snuffing out the pup on his knot too much to really give thought to it.
His orgasm was starting to rise up - knot aching in his sheath. He roared out when it popped out and he felt it press into the slick hole he was pistoning in. He bore down, humping into it to maximize the surface area of his knot and the tailhole meeting. The blood and gore of the pup’s insides made it smoother, almost too slick to really bear down.
The pup cried out again, legs trembling to stand up. Kirishima panted, wolf spit drooling onto the pup’s head as he felt the knot slowly push in. It was so close - Kirishima was so close to breeding this slut up and filling its tailhole with wolf cum. He knew what he had to do.
Kirishima growled out, teeth gnashing as he lunged forward and sunk his teeth into the pup’s neck. The dog garbled out a weak whine, blood rushing out from the entry points. Kirishima snapped his head to the side, plunging his teeth into the pup’s jugular and feeling its bones snap. Its neck was broken, twisted at an unnatural angle, but it wasn’t dead quite yet.
The pup struggled for a second, but only a second - much too weak to truly fight back. Kirishima was almost disappointed that the pup hadn’t tried harder. At least it was still alive enough for its hole to still milk Kirishima’s cock to completion.
The taste of blood filled Kirishima’s senses and newfound strength made him slam his hips into the half-dead pup’s tailhole harder, desperate to make his knot slam home.
The pup
wheezed
out and slumped in his hold and Kirishima finally found the give he was looking for. Finally,
finally
, the knot popped in, weakly suckled and massaged by the dog’s spasming muscles. The pup whined weakly as Kirishima felt its cock spurting another hot load on the ground - its own knot pulsing. He could feel the rapid pulses of its tailhole around his knot, milking Kirishima of all the doggy cum he had. One last orgasm for the pup before it took its last breath.
Kirishima howled out with the dog, muffled by the pup’s throat still in its teeth - its fading heartbeat thudding loud in his ears. He felt over-sensitive with the way his pulsing knot churned and his tip
splurted
out his thick load. Filling up to the brim with nowhere to go, some of it leaked out the sides of his knot and pooled on the ground - the scent of potent wolf cum and blood making the dog dizzy in drunken lust.
It seemed the dog couldn’t take it anymore and collapsed to the ground, shaky legs crumpling. Kirishima smacked his chin on its head going down and growled. Realizing what happened he settled down, shifting his hips to milk out his orgasm.
The pup was gone, dead before it hit the ground. A plain death that Kirishima would soon forget. He released its throat from his mouth, swiping a tongue over his own lips to lap at the blood still staining them. His knot tugged when he snuffled down, but he didn’t pay it any mind - more focused on digging into the carcass he was buried in.
Meat and flesh and fur ripped from the pup’s ribs as Kirishima dug in - a well-deserved meal for such rigorous activity.
✧✧✧
Kirishima awoke, dazed and groggy. His jaw ached and his tongue felt like sand. Moving his tongue, he realized it was actual sand in his mouth and spluttered - sending dirt and spit spraying out of his mouth.
“Blegh,” Kirishima blinked, shaking his head and reaching a sore hand to his head. ‘What the hell happened?’ he thought.
He shifted, chest to the ground, and looked to the sky. Blue skies and green trees - ‘The forest,’ he thought - met him. He blinked and then blinked again, pleading for his brain to wake up.
Everything felt gross and bad and weird - like he got hit by two trains and drowned in a lake. He groaned, setting back his forehead to the dirt. He felt
horrible
and that only meant one thing - he had shifted.
He put his hands on the ground to push himself up but stopped when he felt something
odd
between his legs. Soft fur brushed against his thighs and he felt something
warm
- or wet? - surrounding his dick. He froze, muscles straining, and slowly looked over his shoulder.
A
dog
was there, what was left of it. White and brown fur shifted in the wind, ribs exposed to the sunlight and almost picked clean. The maggots hadn’t gotten to it yet, still fresh.
It was chained, and as Kirishima turned more to look where it led he felt a distinct
pop
on his cock. He looked down and
“Oh my god,” he said aloud, almost a whisper. Disbelieving - it was like his brain shut down as he saw his soft dick pop out of the pup’s slick hole - what seemed like gallons of cum and blood following after. His dick pulsed pleasurably, his balls aching like they’d been drained. He could taste blood in his mouth and his stomach was suspiciously full from a transformation that he knew always made him ravenously hungry.
Kirishima couldn’t think, couldn’t move, couldn’t…feel. He just couldn’t-
thump
sounded to his right and Kirishima startled - eyes trained on the tan door and the lit porch light not ten feet next to him. Light bounced around behind the rattling backdoor, shaped like a person. He could almost see the door handle turn in slow motion.
A lot of things fast-forwarded through Kirishima’s mind in those brief few seconds. He didn’t move his body so much as he
felt
his body move when he crashed through the branches of the forest - naked as the day he was born except for the dog blood splattered on him.
His brain was on autopilot, fully focused on the strain of his legs running - attempting to get some distance from him and whatever
the fuck
he had done in the night. An anguished scream sounded behind him.
Gasping and panting, heart beating a mile a minute - he ran and ran and ran. His eyes filled with tears that made the trees around him look like green blur and he wasn’t even sure where he was headed until he broke through the edge again and came face to face with one of the backdoors of UA.
Recovery Girl was standing there, as she always was after Kirishima’s shift, with a blanket and some protein bars. She caught his eye and smiled, waving him forward when he didn’t come.
He stumbled towards her, soles aching.
“Hey sweetie,” she said. He felt like he was underwater. “How are you feeling?”
Kirishima let her put the blanket around his shoulders and looked at her. She smiled again, but it weakened with every second he didn’t respond.
“Honey?” she said. “Are you alright?”
He promptly bent over and vomited on her shoes.