
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/8243743.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Supernatural
  Relationship:
      Castiel/Dean_Winchester
  Additional Tags:
      Alternate_Universe_-_Creatures_&_Monsters, Monster_Castiel, Bottom_Dean,
      Mildly_Drugged_Dean, Virgin_Dean, Rimming, Comeplay, Dubious_Consent,
      Halloween, Dare
  Series:
      Part 11 of Monster_Destiel_AUs
  Stats:
      Published: 2016-10-09 Words: 4838
****** Cat Scratch Fever ******
by Miss_Lv
Summary
     A teenage Dean is dared to sleep in the abandoned haunted house.
     Guess who shows up?
Notes
     Short little cute porn thing! Halloween theme, might do a few more
     this month.
See the end of the work for more notes
Dean had terrible self-preservation.
So when his friends started making dares and everything had escalated, Dean
hadn't backed down. When everyone seemed a tad impressed with him, he knew he
had to go through with it.
They went camping every summer so it wasn't anything new to him. Dean dug his
sleeping bag from the garage and when his dad asked him what he was doing Dean
explained. The nice thing about having cool parents was that you didn't have to
lie or be sneaky.
His dad listened to the story and then suggested Dean take a spare flashlight
and wear a warm coat.
His mom packed him snacks after dinner while Dean, his dad, and Sammy sat a the
kitchen table. Dean had finished his weekend homework and his dad was looking
it over before he could go.
Castiel jumped on his lap yowling as he butted his head to Dean's chest and
purred like a motor. Dean obliged the cat by scratching his head and petting
downward a few strokes before giving his butt a good rub. Castiel's claws dug
into his jeans as the cat purred up a happy storm.
"I will never understand that beast," his dad grumbled, reaching out a hand and
unsurprised when Castiel bolted from the room.
"He's a feral cat that Dean fed his sandwiches to for months on end. And then
let into our house when it got too cold last winter. What's confusing?" He mom
teased and his dad rolled his eyes. Castiel was still pretty feral but he and
Dean were bros. Mostly because Dean still fed him actual food on the sly rather
than the cat food his mom insisted Castiel eat.  
Dean bundled himself up and packed his backpack full before saying goodbye to
his family.
"Call if a ghost appears," his mom suggested and Dean nodded his head, playing
along with her.
"But not for a werewolf. You can deal with that on your own. Zombies too."
Sam looked disgusted with the both of them, which made it that much more fun.
"Mind where you lay, make sure it's structurally sound and safe," his dad
added.
"Kids have been going in there for years," his mom assured his dad. "The city
has it checked every year for the sheer number of kids who run around in there.
You'll probably have roommates," she warned Dean.
"We'll snuggle for warmth," Dean mused.
"Wait," she called and turned to pick through some of the antique Halloween
decorations they had. A little necklace with a tiny horned head was yanked off
and presented to Dean with mock seriousness. He bowed his head so his mom could
put it on him.
"It'll keep you safe, your grandma used to make me wear the silly thing every
Halloween. To protect me from the ghouls and goblins."
"Perfect, I was planning on hanging out with them tonight," Dean cheered and
took off, feeling good about the whole venture.
 
The house, of course, was creepy as fuck.
It was an old place painted dark with blocked up windows and a dead lawn. It
was a haunted house stereotype and Dean actually thought it was cheesy.
But still scary as fuck.
Dean half expected his friends to jump out of a closet and scare him. When no
one did and he had crept around the entire house he settled for a room
upstairs. It was the only one with the window boards torn down and the moon was
full so it lit the room.
Dean didn't even need a flashlight.
He knew his friends would show up eventually, trying to scare him so Dean set
up a few trip wires. Nowhere dangerous but across a few doorways leading
upstairs. He leaned old board against halfway closed doors so they would fall
when opened. Essentially he booby trapped the house to give him plenty of
warning before anyone found him.
Setting up his sleeping bag, he tucked himself into a corner with his back to
the wall and the shadows hiding him.
He laid back and listened to the sound of kids outside trick or treating,
Halloween music playing distantly somewhere. Dean kinda wished he'd brought a
book or something.
 
Dean woke up to the creeping sensation of being watched. Blinking his eyes
awake he listened for anything in the house and found it dead silent. The trick
or treaters were gone and the whole street seemed eerily quiet.
Sitting up, he tried to quietly sneak from his sleeping bag in order to get the
jump on his friends trying to scare him. Dean nearly jumped out of his skin
when he glanced and saw a pair of blue eyes peering back at him.  
"Jesus, not funny," he grunted, glaring at whoever it was. The light was low
but Dean could make out the shape of someone crouched down. The blues eyes had
a weird glowing light to them, peering from the blackness.
They were genuinely freaky.
"Very funny. Come on Charlie," only she could find something so utterly creepy.
Dean kicked out of his sleeping bag and yanked his shoe on. He was just
grabbing the other one when the eyes moved. The figure stood up and it went
higher and higher, far too large to be his friends.
Dean swallowed and tried to think of who it could be, of how Charlie could have
set it up. It looked human but not quite, long black limbs that were elongated.
When it stepped forward the moonlight hit it and Dean could see some sort of
animalistic face. It stared unblinkingly at Dean with those blue eyes; it's
black face twisting as its mouth opened and it hissed out at him. Pale canine
teeth gleamed and if it was a joke it was one hell of a getup.
So much so that Dean didn't want to wait too see.
But when he moved something from a different direction leaped at him. It was
another massive black thing with gold eyes. Before it reached Dean the blue
eyed one crashed into it and they started fighting viciously.
Dean scrambled away and stumbled as he circled around them to get to the door.
One of them broke away and dove for him. Something, claws maybe, slashed at his
neck and he felt them scratch him but not quite grab. The other one attacked
again and Dean ran for it. Having enough sense to jump his own trip wires.
Dean fell down the stairs more then ran and when he got to the bottom he saw
one of the monsters jump from the top of the staircase, off the wall and into
the hallway where the front door was. Dean turned sharply and rushed to yank at
the back door. But it had been kicked in over the summer and so it was boarded
up now. Dean yanked at the nailed boards helplessly for a moment before hearing
the floorboards behind him creak.
When he turned the golden eyes were locked on him, the black lanky monster
looming so high over him. Dean stared at it and nearly wet himself when the
other one appeared again, grabbing the golden-eyed monster and biting at its
face savagely.
The growling and hissing reminded Dean of cats fighting.
With them distracted Dean ran to the stairs to his left, going up tiny
spiraling stairs and kicking down boxes and boards left on them. He could hear
something climbing behind him growling and hissing.
Dean got to the top, up into the attic and there were empty boxes that he
tossed down, dust raining from them enough that whatever it was stopped and
turned it's head away. The door was a latch swing and Dean pulled it up and
over. It banged closed and there was a board that went through the rungs
already in place. Dean shoved it in and scrambled back when the door banged up.
Twice more it tried to get the door open and then Dean could hear it moving,
heading back down the stairs.
The attic was a massive space, the length of the whole house and probably a
room in its own right. It had two small shuttered windows with a tiny balcony
he could lean out. It was a straight drop to the concrete walkway. Dean
considered yelling for help but hesitated.  
The attic door was silent now and if Dean hollered until someone came and they
found nothing he'd be the laughing stock of the town for years.
"This isn't funny anymore. You got me, I'm scared. Ha, ha," Dean called out,
walking carefully to the attic door. "It's all just a great laugh. You really
hurt me, you dick"
Dean had one shoe on and his other foot was bare and scratched up, he's lost
his sock somewhere. It was a warm night so Dean had only left his jeans and a
black shirt on when he crawled into the sleeping bag. They clung to him now,
damp with sweat. Reaching to his neck Dean winced as he felt the sting along
his skin. Peering at his fingers in the weak light he could see the blood on
them.
"Bastards," Dean grumbled at the floor, falling back to sit on his ass and wait
it out. First sunlight he was out of there and tracking down whoever thought
this would be funny.
The scratch on his neck wasn't deep or bleeding much but it stung like hell,
throbbing as time passed. Dean pulled his shirt off and tried to wipe it clean,
hoping there was just dirt or something in it making it hurt so bad.
It kept hurting though and Dean swore quietly as he began to feel overheated.
It was a warm night, to begin with and after that mad dash he was sweating.
Dean sourly imagined himself getting an infection and needed to be rushed to
emergency, his stupid friends crying in remorse for their stupid prank that had
nearly killed him.
Feeling a little light headed Dean laid back, using his shirt as a pillow as he
stared up at the ceiling. It was raw wood and framing with insulation sprayed
on. The windows were closed and boarded but high enough that the attic was
fairly well lit. The moonlight was coming in through cracks and the dust in the
air was floating through it, slowly sweeping upward by a draft before singing
down lazily. They seemed unnaturally pretty.
The ceiling foam was speckled and it seemed to move with the dust, swaying
gently as Dean let his gaze unfocused.
 
Blinking it back into clarity Dean swore when he felt sweat drip down his
cheek. Running a hand through his hair he found it soaked. His whole body was
gleaming with sweat and Dean frowned at it, blinking at his wet hand.
"Weird."
The floorboards creaked and Dean turned his head to look, still laid out on the
floor.
One of the monsters was in the attic, peering with its golden eyes that were
actually very pretty. The blue one had been the aggressive one so maybe this
one was nice?
Dean watched it approach him, moving as if it had all the time in the world. It
was like a giant mutant cat he decided. It was distinctly feline looking but
with a vaguely human shape to it. It was moving on all fours but a few times it
rocked back and walked on its two back legs. God, it was massive, looming over
him so high as it's furry ears nearly touched the roof.
Dean just watched it come over to him.
It was all black and it gleamed under the moonlight, like fur would. Dean was
tempted to pet it now, watching as it circled him. Steadily staring at Dean the
whole time.
It moved in, a sudden jarring lunge that stopped short. Its gaze was locked on
his neck now, staring intently. Dean fumbled and reached out, touching his own
neck and then feeling the cord of the necklace. The horned head was cool under
his fingers and Dean gripped it tight.
"You a ghoul or a goblin?" Dean tried to say, the words coming out weirdly.
The black monster rumbled at him and came in closer, crawling over Dean.
Distantly he knew he should be panicking but he just felt loose and relaxed.
The creature felt smooth and warm as it rubbed its cheek on Dean’s face. The
motion was distinctly cat-like and Dean thought that the monsters did look a
bit like mutant cats.
The monster sat back and watched him; ear flicking like Castiel did when he was
thinking of how to be an asshole.
Dean noticed something creepy behind the monster, the other one slowly coming
closer without making a sound. Idly, Dean thought he should say something but
then it pounced.
The gold eyed cat turned and hissed but the other one had surprise on its side.
Dean watched it claw the golden eye's face up and then drag it to the window.
The golden one hissed and snarled but the other had a good grip. Dean watched
it toss the golden eyed one out the window and heard the thump of it hitting
the ground below. They were in the attic so it was a long fall.
A dramatic end, Dean thought.
The blue-eyed monster came over to Dean circling him carefully and nudging his
arm. It actually was fur and it felt soft and silky as Castiel.
The monster nudged Dean and clawed paws gently turned him, rolling Dean so he
was on his stomach. A raspy tongue on his neck made him flinch. The scratch
burning as the monster licked at it.
"S-stop it," Dean fumbled but the thing kept licking him, the scratch of his
tongue burning a little.
The pain of it was starting to fade though and Dean squirmed under the weird
feeling but let the monster get spit all over his neck if it meant that the
scratch would stop aching. The monster started rubbing his face against Dean as
well, going between rubs and licks over and over. Dean laid out on his stomach
and just let it happen, feeling less out of body the longer the monster worked.
Its tongue was scratchy like a cats and it started licking longer strokes, more
of Dean’s neck. And then down his back.
When it licked the dip of his lower spine Dean rolled his hips.
It felt so strange but good. His dick was starting to perk up.
Dean lifted his ass a bit, not struggling when those claws pulled at his jeans,
down his thighs and then off. The cool night air felt good on his skin.
Insistent nudges make him spread his legs and Dean jerks at the first wet warm
touch on his ass.
The monster is rumbling in approval as it licks over his asshole again. It
feels weird, the scratchy sensation against that dirty part of him. But the
monster is really into it, licking over, again and again, pushing its face
between Dean’s cheeks.
The tongue felt weird but in a good way, the wet feeling on his hole starting
to get good.
Really good.
Dean’s a teenage boy, he’s experimented before. He liked fingering himself and
the monster’s tongue feels kind like that, the new sensation that Dean had to
decide if he was good with.
Once he relaxes a bit it gets better, the monster pulls his cheeks apart more
to go deeper and the tongue begins to dip in a bit, pressing into Dean’s hole.
That gets him going.
It feels amazing and Dean’s lifting his hips and pushing back right away. He
groans into the floorboards as the monster keeps push its tongue insistently,
pressing it deeper and trying it’s hardest to get as far as possible. Dean’s
cock is throbbing, he’s gonna blow right away with this guy on him, eating him
out.
Then the bastard stops.
Dean whines at him, outright whines like a kid. But he can’t help it. He was
having a major life moment there. He wiggles his ass invitingly at the monster,
peering over his shoulder as it climbs over him.
It takes Dean a second to get it but then he realizes with a jolt.
The monster is a he, and he’s got a shiny dick to prove it.
Dean starts, trying to get up but the monster growls at him, blue eyes glaring
as it pinned him to the floor, humping at his ass. His cock is poking Dean’s
thigh, it’s small, nothing massive and it’s wet.
Dean chews his lip, knowing he really shouldn’t but he was so damn horny.
He had always planned to explore his ass more anyway. With a huff, he spreads
his legs again and lifts his ass.
The monster rumbles happily, rubbing its soft silky face against Dean’s
shoulder as it grinds into his ass.
It leans back and pushed again, the cock sliding between Dean’s cheeks.
He jerks a little at the prickly feeling. It doesn’t hurt but he can feel
little bumps all over the dick. He wonders how it will feel in his ass.
The monster rocks against him, grinding down more.
Dean’s half tempted to help it but then the monster growls out and warm spurts
hits Dean’s ass. He’s almost disappointed that the thing came.
He won't’ get fucked after all.
But then it’s moving again, smearing come on Dean’s hole with the head of it’s
dick and then pressing in a bit, still hard. Back and forth it moves dipping
into his hole then back to let the come flow down. It pushed a bit more harder
and Dean can feel his ass give it up and open up to it. A strange bit of
pressure and then a wet slide. He came feel the come seeping in him.
When the monster presses down over him it nuzzles his shoulder and nips at his
skin.
“Good monster,” Dean mutters.
He yelps out loud when the thing shoves into him.
Like, his whole dick.
Dean hadn’t thought he was that huge, near Dean’s own cock size. But now that
it’s in his ass it feels huge.
His hole feels tore open, wider than it’s ever been.
He tries to push the monster off but it has him pinned now, growling in his ear
and nuzzling his head as it holds him down, keeps its dick buried in his ass.
Dean whines when the monster begins to move, rocking back and then shoving
forward with a grunt. The cock inside him it twisting his insides, pulling them
back and forth with the motion.
He bites his lip and jerks with the next lunge.
The weird sensation inside him is starting to feel good, each time the monster
sways in or out of his ass his hole feels tingly. Like when Dean’s jerking off
and his cock feels that hot needy pleasure, that build for more and more until
he was coming. It’s like that.
The monster started moving quicker, thrusting faster and pinning Dean down to
the floor with each thump. He’s giving it hard and rough but Dean’s already
into that the second it starts.
His cock is aching and hard, his ass is getting used to it and the pain is
fading away, leaving only that hot needy feeling.
When the monster grinds in deep, pushed as far in as it can, Dean feels
something in him light up, he moans out, hips rolling at the weird amazing
feeling.
Dean whines out, pushing back actively, fumbling to get up on his knees.
The monster let’s him, arranging them so Dean’s up on his hands and knees and
the monster is behind him and bend over him.
The new position gives it room to work and it really starts fucking Dean now,
pumping furiously and holding onto Dean’s hips to pull him back. Not that he
needs to, Dean shoving as hard as he can already.
The weight of it feels good, the slap of skin on fur, over and over.
Getting fucked feels amazing. He hasn’t gone all the way with a girl yet but
Dean’s brain is already thinking he should get himself a boyfriend instead.
Because this is like nothing he’s every felt before.
Each time his ass opens up for the monster and it hits a deep spot and Dean
kinda jolts, his whole body just twitches cause it feels so mind-blowing. He’s
experiencing life changing shit here.
The monster's body feels good too; the fur rubbing along his thighs, ass, and
back is kinda tickling and teasing. It makes his skin hyper sensitive so the
slap of the thrusts feels harder. The firm hand/claws on his hip are kinda hot
too, the way he's gripping so confidently, like he’ll make Dean take that dick.
Sweat drips down his face and Dean’s seriously sobbing like a little girl, he
can’t stop the high breathy sounds coming from his mouth at all.
It’s hard to keep himself upright with one hand but Dean manages and the second
he’s got his hand on his cock he’s gone, coming in long spurts as the monster
rams his ass, like it knows.
It just fucking ravages Dean for a second, too-hard slams and a low inhuman
growl-snarl as Dean whines high in his throat.
The monster slams into him, pushing all the way and pressing in so hard Dean
falls to the floor, unable to stay up. The monster follows him without pulling
out at all, just snug against his back, growling lowly as it ground inside him.
Dean can feel it’s cock twitching and pulsing inside him. It’s gotta be coming,
pumping into him.
After a long moment it goes slack, hands no longer biting into Dean’s skin and
its body no long keeping Dean tight to the floor.
It pulls out of Dean with a wet pop.
He feels kinda gross back there, too wet. He clenches his ass but slippery
warmth still get’s out of him.
He rests his weight on his forearms and ducks his head to look under him. He
can see white lines running down his thighs. The monster’s jizz. There's so
much of it too, like an unreal amount pooling on the floor as it seeps steadily
from Dean’s ass.
The monster rumbles and shifts, moving back and Dean feels that raspy tongue on
his asshole again.
He moans out, clutching the floor and rocking his hips while it licks him out.
His tongue pushes in more easily now and it goes deeper, licking on the inside
of Dean and it feels fucking astounding. Dean’s moaning and groaning, pushing
back at the monster’s face and grinding down.
The teenager get’s his cock in his hand and he jerks off, coming again to the
feeling of the rough tongue in his asshole.
 
The monster moves him, rolling Dean onto his back to lay on the floor. He goes
willingly, laid out and feeling good. A nice lazy feeling that comes with a
good hard wank.
The monster goes for his ass again and Dean ends up with his legs over its
shoulders, crooning out at the feeling of that tongue, raspy and rough on him.
He can’t shut up either, Dean’s usually able to be more quiet but it looks like
he’s gonna be noisy during sex.
When the monster works over his balls he feels his cock twitch and Dean whines,
the scratchy feel on his cock gets him hard again, Dean’s dick is throbbing all
over as the monster licks at it.
A long stroke just under the head makes Dean come a third time.
White spurts on his stomach leaving him breathless and the monster cleans him,
licking the spunk up off Dean’s skin. It works its way up, cleaning his chest
and neck, nuzzling him roughly and then licking his face.
Cat monster for sure.
Dean feels the poke of something at his ass and spread his legs, pushing his
butt up so the monster’s cock can find his hole again.
There’s no pain, this time, a bit of a burn but far easier the second time Dean
notes. The monster holds Deans thighs, bending them to his chest so his ass is
high. He goes with it, letting it pose him as long as it just keeps fucking
him. The pull and push feels incredible. Dean’s panting and loving every second
of it, letting the monster fuck him and lick his face.
“God, yeah, fuck,” He mutters, reaching up and clutching at the monsters fur,
gripping it’s arm and crying out as it starts pounding him more steadily, going
harsher and rumbling as it does so.
Wet slapping sounds fill the room, Dean’s hole is all wet and used and it
slurping on the dick in it. Each time the monster moves the bumpy parts of its
dick drag on his rim and it makes Dean jolt, it feels amazing. Dean is for
certain gonna get fucked again, many times over he thinks.
He holds on for dear life as it fucks him, the thing is wicked strong and the
power behind the slamming lunges gets Dean off, he’s never thought about it
before but in the moment he likes it, likes being pinned and helpless.
Dean watches it growl above him, grinding into him as it stares down at him,
getting off inside Dean’s ass.
His cock is too tired to get it up again but it still feels great, he lets the
monster ride him and jizz inside again. Holding Dean down into the floor and
snarling as its cock pulsed and twitched. It was like it thought Dean might
run, try to escape it so it was making him stay put, making him take the load
in his ass.
Another new kink for Dean.
Once it’s finished coming in him, the monster pulls out and ducks between
Dean’s thighs again, licking his asshole clean as the come seeps out. Dean
surprises himself with another wank, managing one last kinda painful jizz. The
monster, of course, licks that up too, washing Dean clean.
He curls up with Dean after, warm body pressing close as it licks at Dean’s
face, washing him happily.
Dean yawns and dozes off between licks.
 
He wakes up in his sleeping bag half frozen. Dean shivers and crawls from his
warm bag. He notices immediately that his ass feels really weird and grossly
wet. He also notices he had his shirt on backward his jeans aren't done up, his
underwear is gone and his shoe are on but no socks.
He sits and stares at them for a bit, wondering what the hell happened.
He can recall bits and pieces, being chased by some asshole, being trapped, the
two monsters.
The monsters.
Dean shudders and suddenly he remembers getting fucked. He remembers having his
ass licked and come in. Red-faced, Dean shivers and feels his cock try to get
hard.
But that wasn’t real. It couldn’t have been.
A wet dream?
A low yowl makes him freeze and he looks up into the shadows of the room, the
sun if just rising so it must be five or so in the morning. Sunlight pours but
there are still shadows. Another sound comes and Dean nearly jerks out of his
skin when something jumps out.
Castiel cries again and Dean flops against the sleeping bag.
“Bastard, you scared me,” Dean growls.
Castiel gives him a fuck you look and walks on Dean’s leg, sniffing his chin
and then rubbing his face on it roughly.
“Dick bag,” Dean mutters affectionately and scoops up the cat. He rolls his bag
up and heads out. Wanting to get home and into a warm bed.
Outside the house is a dead cat.
It’s all black like Castiel but it had gold eyes. It’s flopped on its side,
staring sightlessly at nothing. Dean stares and Castiel growls.
The cat is right where the monster would have fallen, bits of splintered board
around it.
Dean thinks of the blue eyes and looks at his cat, seeing those very same blue
eyes.
“No way,” Dean breathes. He convinces himself it was just a dream as he walks
home. The backdoor is unlocked for him and he slips in, heading up to bed as
the house stands quiet.
He keeps glancing at Castiel who looks noticeably smug. He makes Dean grab him
some meat from the fridge and follows him to his room, snacking delicately on
it while Dean changes.
He had scratch marks on his hips.
When Dean reached back and touches his asshole he finds white smears, come
still coming out of his ass.
“No way,” he breathes again shakily.
Castiel purrs on the bed, licking his lips and looking like the cat that got
the canary and the cream.
“No way.”
 
 
End Notes
     The more I think about it the more Castiel seems to fit the asshole
     cat personality. lol. Might have to do a dog Dean and cat Castiel
     fic. Their puppies? kittens? pittens? kuppies? would be adorable
     crimes against nature.
     Come hang with me on tumblr: the-miss-lv.tumblr.com
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