
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/2384501.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Supernatural, destiel_-_Fandom
  Relationship:
      Castiel/Dean_Winchester
  Character:
      Castiel, Dean_Winchester
  Additional Tags:
      Lonely_Teenage_Castiel, Demon_Dean, Fluff, Some_angst, Smut, Demon_Dean
      is_surprisingly_sweet, One-Shot, Destiel_-_Freeform, Bottom_Castiel, Top
      Dean
  Series:
      Part 1 of My_Deanmon_and_Me
  Stats:
      Published: 2014-09-30 Words: 3435
****** Summoning the Deanmon ******
by WevyrDove
Summary
     Castiel is sick of being bullied at school. He finds a book of magic
     and summons a demon. What he gets is Dean, who is nothing like what
     he expected.
Notes
     So, I am completely procrastinating from finishing "Need You Now",
     for those of you following the Angel Mix Tape series. I think I am
     going to need a lot of convincing to keep going. You did it once when
     you convinced me to write a sequel to "You Belong to Me", you may do
     it again ;)
     In the meanwhile, enjoy this one-shot destiel, which I have written
     with demon Dean in celebration of season 10 starting next week!
     (Note: Demon Dean is in his mid 30s, just like present day Dean)
     xoxo
     WevyrDove
Castiel drew the shades on his windows. It was late afternoon and there was
still plenty of light outside. But for what he was about to do, Castiel needed
dark. He locked the door to his bedroom as a precaution, although his parents
wouldn't be home for hours. Castiel crouched on the floor and started drawing a
pentagram in the middle with a piece of chalk. Then he carefully placed candles
at the points of the star within the circle. He pulled out a lighter and moved
the flame to each wick, watching it catch the tips. He sat back cross-legged
after all the candles were lit, and grabbed the book sitting behind his head on
the bed. It was titled: The Booke of Darke Magic.
Castiel had picked it up at the used book store. It was a sorry looking tome,
with its binding cracked and creased, the pages yellowed and the corners
rounded. The gilding of the letters on the cover was worn off. Castiel licked
his thumb and flipped through the pages until he reached the page with the
header: Summoning and Binding a Daemon. The book had caught his eye earlier
when he had been browsing the shelves, sitting incongruously between a couple
of cookbooks. When Castiel picked up the book and opened it, it had fallen open
to the section on demons. Castiel had skimmed the pages with interest and noted
the summoning spell, although he was skeptical of the existence of the
supernatural.
Lately, things at school had been rough. Castiel was a geeky kid; skinny with a
mop of unruly dark brown hair and thick glasses. Everyone seemed to use him for
target practice, both verbal or physical. He had moved to town in the middle of
his freshman year. So far he hadn’t made any friends, and it was looking like
things wouldn’t change. During lunch, Castiel tended to bring a book with him
and hide somewhere in the school. He found a little nook under the stairwell in
the science building and ate most of his lunches there, away from the other
kids. On the weekends he spent a lot of time reading as well. If he ventured
out, it was to the library or to a bookstore. 
His preference was the used book store, Bookmarked, in the town center. Most
people from his school didn’t go there, instead hanging out at the local Barnes
and Noble. Castiel loved the quiet and subdued atmosphere of Bookmarked. The
owner never minded if he spent hours reading in one of the beat up chairs that
sat in the corners of the store. Earlier at school, on the same day he had
foundThe Booke of Darke Magick, Castiel had been shoved to the ground,
discovered a piece of chewed gum in his hair, and narrowly escaped a wedgie. He
was sick of the constant barrage of abuse. He had tried ignoring the bullies,
reporting it to teachers, and trying to avoid being seen. Nothing seemed to
help. When the book came into his hands with instructions on demon summoning,
Castiel felt inspired. He was certain it wouldn’t work, but he had nothing to
lose, and he felt desperate for a way to stop the bullying. 
Now that he was sitting in front of the illuminated pentagram, Castiel felt
silly. Still, he scanned the page in front of him. The ritual called for an
incantation. By the flicker of candlelight, Castiel read the text out loud:
“Ad construgendum, ad ligandum eos, pariter et solvendum, et ad, congregantum
eos,coram me.”
The words were awkward on his tongue, and Castiel wasn’t sure he had pronounced
them correctly. Nothing was happening. Castiel sighed and was about to blow out
the candles when a breeze blew in the room, even though the window was closed.
The candles flared at the sudden influx of air. A plume of jet black smoke
manifested in the bounds of the chalk pentagram, and then coalesced into a
human form.
“You called?” the demon rasped. Castiel started. He jumped up from the floor
and stepped back. He was shocked that the spell had worked, and even more
shocked at the appearance of the demon. He had been imagining red skin and
horns and a tail, maybe even wings. Instead a man with short sandy brown hair
that was spiked up a bit in front, wearing jeans and a flannel shirt, was
standing in front of him. He looked to be in his mid 30's, Castiel guessed;
older than him but younger than his parents. The only indication of any demon
type qualities was the complete blackness of his eyes. 
“Um...um...are y-you a demon?” Castiel stuttered. He held his hands in front of
him, as if they would offer any protection if this “demon” wanted to get at
him. Even without any powers, this guy was taller and stronger than he was.
“Sure kid. What else would I be? You used the spell right? Ad
construgendum...blah blah blah...” The demon looked bored, and smirked at
Castiel. Castiel noticed he had freckles. A demon with freckles?
“Um, ok. Yeah. I used the spell. I just didn’t think you guys existed.” Castiel
said uncertainly. He dropped his hands to his sides. Aside from being a bit
freaked out that this adult male was in the confines of his room, he also was
fascinated at the blackness in his eyes and the way the smoke had appeared and
solidified into a person, or rather a demon.
“Well. We do exist. So, anyways, I was in the middle of a pretty intense
torture session down there. So where’s the fire?” the demon asked impatiently,
tapping his work boots on the floor.
Castiel gulped. “I need some help with- bullies.”  He shrugged his shoulders as
if it wasn’t a big deal. 
“Gotcha. Some douchebags giving you a hard time at school? You want me to drag
them down to hell?” The demon grinned, showing perfect white teeth.
“Um..maybe not that drastic. Maybe just scare them a bit?” Castiel suggested.
“That’s no fun.” the demon frowned. “I suppose I could help you out. Seems a
pity though. We’re always looking for fresh souls.” Again that smile. 
“I don’t want them to die, I just want them to leave me alone.” Castiel said
firmly.
“Huh. Yeah. You act like you’re all good, but why are you summoning a demon
then?” the demon smirked again. “What’s your name, kid?”
“C-Castiel.” Castiel stuttered again. The demon was looking straight at him,
and the eyes were really freaking Castiel out.
“I’m Dean.” the creature offered. He flicked his eyes and suddenly they were a
deep green. “This more comfortable for you?” 
Castiel felt his mouth go dry. Now the demon just looked like a guy standing in
the middle of the star he had drawn. A really hot guy.
Dean laughed with amusement. “Enjoying the view?” He asked, gesturing to his
body. “I have that effect on dudes and chicks.” He added smugly.
Castiel coughed and looked away. “Yeah so. Dean the Demon. You gonna help me?”
“Depends. You gonna help me?” Dean repeated. “This doesn’t come for free, kid.”
“What would it cost to beat up all the people who ever picked on me at school?”
Castiel asked nervously.
“Hmm. I gotta think on it. You know what? There’s one thing I’ve missed so much
down in the hell hole.” Dean grinned. “Pie! I kick some ass, you bring me a
dozen pies. All different flavors, and a couple of cans of whipped cream.”
Castiel had been waiting with bated breath for the horrible price he would have
to pay for some peace at school. He was startled by Dean’s request, and almost
laughed with the absurdity of it all. “Deal.” Castiel nodded. “We have this
great bakery down the street. Should be no problem.”
“No problem eh?” Dean nodded in mimicry of Castiel. “Actually, I think you do
have one.”
Castiel looked confused. Dean flicked his eyes back to pitch black. He smiled
wickedly and took a step outside the bounds of the pentagram. He took another
step toward Castiel who was backing up. 
“You missed a spot.” Dean said quietly, motioning to the pentagram. Castiel
looked and saw that the edge of the circle had been smudged. It must had
happened after Dean had appeared, when Castiel had gotten startled and stood up
in a hurry. 
“Shit.” Castiel said. Dean smiled widely. He moved even closer to Castiel.
Castiel backed up until the back of his legs hit the edge of his bed. “Wh-what
do you want with me?”
“Pie isn’t the only thing I’ve missed earthside.” Dean winked. He looked
Castiel up and down.
Castiel trembled. “Please don’t hurt me.” He whined.
“Oh, I ain’t gonna hurt you.” Dean soothed. “Much.” He laughed.
Castiel felt the bed behind him and pushed up onto it, continuing to back away
from Dean. “Leave me alone.”
Dean clambered onto the bed, forcing Castiel to back up against the wall at the
head of his bed. “If you just relax, it’ll be so much better for you.” Castiel
had his eyes shut now. He hugged himself with his arms. He waited for Dean to
attack him.
“Hey,” Dean said gently. Castiel cracked one eye open. Dean was sitting on his
knees, looking at him with green eyes. It was too weird; now instead of a
demon, it felt like Castiel just had a very handsome man sitting in his bed. A
very, very handsome man. Castiel opened both eyes and let down his guard a bit,
his arms loosening but still crossed.
“Despite being a demon, I’m not a complete douchebag.” Dean murmured. “I do
like to kill, and I do like to fuck.” Castiel cringed. Dean put up a placating
hand.
“But, I like it even better if the other person enjoys it too.” His eyes went
black. “Sorry about that.” Dean muttered, flicking his eyes back to green.
“It’s just the thoughts that I’m having kinda bring on the demon stare.”
Castiel swallowed hard, realizing Dean must be thinking things about him. Dean
smiled and his eyes crinkled around the edges. Castiel relaxed a little. Were
all demons this gorgeous? 
“So, you a virgin?” Dean asked casually. Castiel blushed furiously. Dean
grinned wickedly. “Even better. I’ll get to test that myth about taking a
virgin to increase my powers.” Dean edged closer to Castiel, who tried not to
tremble in his presence.
“I can tell you like me.” Dean said softly. “You want this.” He drew the back
of his hand gently over Castiel’s cheek and then palmed it. “You’re so lonely.”
Castiel leaned into Dean’s hand. He didn’t deny Dean’s words.
“I’m gonna make you feel good, baby.” Dean purred. “Forget all those dicks at
school. And if you’re extra good for me, I’m going to kick their asses as a
bonus.” He nuzzled Castiel’s neck.
Castiel was bewildered. He was completely inexperienced, unless you counted
some fumbling around with a friend in the basement, back before his parents had
moved them to this town. And now he was going to do it with a demon? He closed
his eyes. The feel of Dean licking and sucking at his neck was making him hard.
“You taste good.” Dean praised. “So pure and innocent, like an angel.” Dean sat
back and looked at Castiel, his eyes black again. He gently removed Castiel’s
glasses. Castiel blinked at him.
“Beautiful baby blues.” Dean admired. “Never see any blue down in hell. Just
red, black, gray. Gets tedious after awhile.” Dean went back to Castiel’s neck,
sucking hard. Castiel groaned.
“You like that, baby?” Dean spoke against his neck. “I’m going to mark you all
up so you never forget that Dean was here.” Castiel knew there would be a set
of hickeys lining his neck tomorrow morning. Lucky it was cold enough no one
would question it if he wore a scarf all day. Dean shifted even closer to
Castiel, insinuating himself between his legs and pressing him back against the
pillows and the wall. As he continued to nip at Castiel, he put his hands on
Castiel’s thighs. Then Dean moved from Castiel’s neck to his mouth, catching
Castiel’s bottom lip with his teeth. He bit down enough to draw blood and a
yelp from Castiel. Then he plunged his tongue into Castiel’s mouth while it was
open and pressed their lips hard against each other. Castiel was moaned under
Dean’s mouth. Dean moved his hands up to Castiel’s sides, stroking gently. He
licked at Castiel’s ear, tugging on the lobe. Castiel cringed, worried that
Dean would bite him again. Dean’s laugh was low and rough in his ear.
“I’m going to make you mine, Castiel.” Dean went to the other side of Castiel’s
neck, that was still pale and unmarked. He started sucking hard and putting
another line of bruises on Castiel. Dean shifted so he was straddling Castiel’s
leg and moved one hand to cup Castiel’s erection. Castiel gasped and panted at
the contact, and whimpered at the feel of Dean’s hard length against his thigh.
Dean stroked Castiel, making him whine with need. Castiel felt like he would
come in his pants if Dean didn’t stop. His breathing quickened, and Dean
stopped.
“Doesn’t take much, does it?” Dean purred in his ear. “I’m not letting you come
that easily though. You gotta work for it, Castiel.” The eyes flicked to black
again. Castiel cowered under Dean’s gaze; at the same time he felt his cock
twitch when Dean looked at him. Dean grabbed Castiel bodily and flipped them
over so Castiel was lying on top of him. Their cocks dragged along each other
through the layers of fabric, causing them both to groan.
“I think we need to lose the clothes.” Dean grinned, his eyes still black. He
snapped his fingers and suddenly both of them were naked. “Handy bit of demon
magic.” Now they were skin to skin, and Castiel was very aware of the muscular
body underneath him. He rolled his hips against Dean’s, who groaned and pushed
back in response. Castiel let himself palm the muscles on Dean’s chest, pausing
to caress the nipples. Dean sucked in a breath. 
“Been too long for me. I can’t wait much longer, baby.” Dean growled. He
grabbed at Castiel and flipped their bodies again so now Dean was on top. He
gripped Castiel’s legs at the thighs and pushed them apart. 
“Give me that pillow.” Dean commanded. Castiel didn’t think to disobey under
that dark gaze, but reached up and handed the pillow to Dean. Dean lifted
Castiel’s hips and slipped the pillow under. He sat up and raked his obsidian
gaze over Castiel’s body. Castiel took his turn looking Dean over as well,
marveling at the hardness of the demon’s body and admiring Dean’s thick cock.
“You’re a pretty boy, aren’t you Castiel.” Dean purred. He put his fingers
against Castiel’s mouth, who instinctively opened and started sucking. Dean
removed his hand, and then reached down to Castiel’s opening. Castiel took a
breath, bracing himself. Dean stroked Castiel’s thigh softly with his dry hand,
and then pushed a finger in. Castiel gasped at the sensation. Dean grinned and
pushed in further, and then added another finger, making Castiel suck in a
breath.
“Sorry Castiel, I really can’t wait. You should be glad I’m prepping you at
all.” Dean murmured, adding yet another finger, and spreading them to ease
Castiel open. Castiel felt discomfort but was too turned on to care. Dean
licked his lips, watching Castiel’s face as he curled his fingers upward.
Castiel whined and lifted his hips at Dean’s touch; he wanted Dean to fuck him
now.
“Then do it.” Castiel said. Dean looked at him in surprise, the black eyes
turning green. He smiled broadly, and removed his hand. He slicked his cock
with his own saliva, and then pressed the head against Castiel’s hole.
“Eager to give it up to me, huh?” Dean teased. His eyes were black again.
Castiel pushed his ass against the head of Dean’s cock, feeling reckless.  Dean
laughed. “Little slut. I’m going to fuck you so hard.” 
Castiel shuddered with need and desire. “Please.” he whimpered. 
Dean grabbed Castiel’s legs at the ankles, and pushed up so Castiel’s knees
were on his chest. He slowly edged his length in, making Castiel sob. He kept
pushing until he was fully seated, his eyes staring into Castiel’s the whole
time. Castiel took a deep breath, his walls clenching around Dean. He felt full
and stretched and complete. Dean groaned with pleasure and began to move in
Castiel, thrusting in and out. Castiel whimpered, licking his lips as he
watched the demon moving above him. Dean leaned down to kiss him gently,
surprising Castiel with his tenderness.
“Oh Castiel. I’ve needed this for so long. And I’m so glad that you were the
one who called me.” Dean said thickly. He began to move in and out again.
Castiel felt the pressure building inside himself as Dean continued. Dean
reached down and grabbed Castiel’s cock in one hand, causing him to moan
loudly. Dean stroked up and down the shaft, running his thumb over Castiel’s
wet slit. He increased the pace of his thrusts, while matching the strokes to
the same pace. Castiel was close to breaking.
“Come for me, baby.” Dean urged. At the sound of Dean’s voice, Castiel was
coming hard, screaming with pleasure and spurting over his own stomach and the
demon’s hand. Dean started pounding even faster into Castiel as he finished
coming, the slap of skin against skin loud in the room.
“I’m going to fill you up, baby. Oh my fuck-“ Dean shouted as he slammed into
Castiel, his hips stuttering as he came hard into him. His movements slowed as
he came down from his peak. Dean let himself lie on top of Castiel, the sticky
cum between their stomachs. He pressed a kiss to Castiel’s chin. Castiel felt
Dean soften and slip out of him. He was dazed and worn out, still not quite
believing what had happened. 
Dean rolled off of Castiel and pulled him close. Castiel snuggled into the
crook of Dean’s arm. Dean pressed a kiss to Castiel’s hair, and murmured, “I
think that’ll do for payment.”
Castiel felt himself drowsing as Dean held him, and fell asleep. When he woke,
Dean was gone. The room was dark and the candles extinguished. He turned on the
light on his nightstand. At some point, Dean had cleaned him up and dressed
him. Castiel guessed it was demon magic again, since he hadn’t woken up.
Castiel got up and looked in the mirror, noting that his neck was unblemished.
He felt disappointed that there was no evidence Dean had been there. Even the
soreness that should have lingered wasn’t there. Castiel began to wonder if he
had hallucinated the whole thing.  He looked back in the mirror and pulled at
the neck of his T-shirt. Just under the edge was a purple bruise. Castiel
sighed with relief and smiled to himself. It was a secret that he had now, that
no one could take away.
…
The next day at school, Castiel noted that many of his usual tormenters were
absent. The few that had made it to school were bruised up, and some even
sported casts and carried crutches. No one made eye contact with him, and
Castiel knew that Dean had fulfilled his promise. He wondered where the demon
was now, realizing he had just unleashed him onto the unsuspecting world.
Castiel couldn’t bring himself to care. He only hoped that Dean would come find
him again. 
That day was the first day in a long time that no one had bothered Castiel. He
felt cautious relief that the torture might be at an end. When he got home,
Castiel threw his backpack in the kitchen and headed up to his bedroom. 
“Hey baby. How was school?” Dean drawled. He lay on top of Castiel’s bed, his
arms behind his head. Castiel had never seen a more gorgeous sight.
“Thank you.” Castiel grinned.
“Oh yes, you’ll thank me.” Dean nodded. “Come here.” 
Castiel crawled eagerly onto the bed, draping himself over Dean. He hugged the
demon tight, and Dean let him, stroking Castiel’s hair gently. When he picked
up The Booke of Darke Magick, he could not have imagined how much his life
would change in a day.
Castiel had never been happier.
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