
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/13033026.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      F/M
  Fandom:
      Original_Work
  Relationship:
      Brother/Sister, Big_Brother/Little_Sister_-_Relationship, Raethen/Velina
  Character:
      Raethen, Velina
  Additional Tags:
      Sibling_Incest, Brother/Sister_Incest, Brother-Sister_Relationships,
      cervix, Cervix_play, Cervix_Penetration, Object_Penetration, Underage
      Sex, Age_Difference, Sex_Magic, Big_Brothers, Little_Sisters, Large_Cock,
      Size_Difference, Heterosexual_Sex, Consensual, Impregnation, womb, womb
      fucking, womb_sex, Uterus, uterus_sex, uterus_fucking, cervical, Cervical
      Play, Cervical_Sex, Cervical_Penetration, womb_penetration, uterus
      penetration
  Stats:
      Published: 2017-12-16 Words: 2663
****** Stretching Sister's Cervix ******
by risque
Summary
     After months of begging for it, Velina finally convinces her brother-
     lover Raethen to fulfill her intense fetish by using his magic to
     stretch her cervix so his long cock can penetrate into her womb and
     fuck her fully.
Notes
     Pure hot, fun, magical cervix-sex! It's unrealistic but that's what
     magic is for. I'd written 95% of this a long time ago and kept
     thinking I'd add to it, but since that doesn't seem to be the case,
     enjoy this as a stand alone. Maybe someday I'll revisit these two,
     but for now I have no plans to continue this story.
     Comments and kudos are always HIGHLY appreciated.
The magic had already taken hold of Velina. Her little breasts were now
boasting hard pink nipples and her clit was jutting out like a third, dark pink
and proud and straining to be touched. But it wasn't the fourteen-year-old's
clit or nipples that were to be played with tonight. Although enhanced by the
magic, the pleasure they gave her paled to almost nothing for the fetish young
Velina had cultivated deep inside her body. The magic spell her twenty-eight-
year-old brother Raethen had cast was designed to specifically target her
sensitive cervix and turned the entire cluster of muscle into an intensely
erogenous and, more importantly, very pliant zone.
"Rub it," she begged, crawling into her brother's lap. "Put your fingers inside
and rub my cervix. Push into me, make me open." Ever since they'd started
fucking, Velina had been obsessed with her cervix being fondled. Raethen's
long, thick cock coupled with Velina's small, petite frame meant he filled her
pussy long before his cock was fully sheathed inside her. Every time they
fucked, they always wanted more.
Her eyes were dilated, glassy and bright due to the magic and the strength of
her arousal. Her brother held her slim, nude body with one hand and parted her
legs with the other, sending a long questing finger deep inside her tight
velvet folds. He had touched her cervix many times, stroking her until she
orgasmed, but never had they paired the play with magic. Despite her begging,
Raethen had never tried to penetrate her deep, secret inner hole... until now.
Her breath caught as he explored, her hips bearing down until his fingers
bumped into the soft spongy disc of her cervix. "Yessss!" she gasped, rocking
her hips. "Oh yes, that's it." She shook with pleasure. "There's no pain. It's
so good. It feels so good! That's it, that's my hungry little cervix! It w-
worked. It worked so good! Oh, god! R-rub it, touch it, f-fuck it. F-fuck my
cervix."
"Velina," he moaned, running the fat pad of his finger around and around the
sensitive torus of his little sister's cervix. Finding the tiny divot in the
center, he circled it again and again, just the way he knew she liked it.
Velina whimpered and moaned, shuddering with pre-orgasmic delight. There was no
indication of any discomfort from her whatsoever now. The magic had worked,
turning all the pain receptors into pleasure ones. "H-harder," she begged. "M-
More! F-force it open... please... big brother..."
This was why Raethen had cast the spell. This was why he had spent countless
hours learning the magic and practicing. This was what Velina had begged him to
do every day for months: penetrate her cervix. And tonight, with the power of
magic on his side, they would do it.
Taking a calming breath Raethen rubbed his little sister's cervix harder,
faster. He pushed the tip of his middle finger into the divot, and swirled it
until she screamed in intense pleasure. He took it slowly, teasing her, his
cock growing harder and harder all the while.
Velina shuddered with orgasm, clenching her legs hard around her brother's
hand. "D-don't stop," she begged through chattering teeth.
Raethen had no intention of stopping. As arousing as it was to play with his
little sister's erogenous cervix, he derived no pleasure from it. The end goal
was, of course, to insert his cock into the opening his finger created after
the magic spell sufficiently dilated her cervix. After months of indulging in
her cervix play fetish, Raethen was addicted to it now, too. He wanted to pry
her impossible hole open and then fuck the entrance he forced her to create.
"Open," he commanded, whispering hotly into her ear. "Open your cervix you
nasty girl. Open your most inner hidden hole for your big brother."
Velina orgasmed again, moaning and thrusting her hips down, making Raethen's
finger jab into her cervix. Around them, the magic swirled, penetrating deep
into Velina's body. "I f-feel it! I-I'm o-opening," she sobbed as her body
shook with orgasms.
And suddenly Raethen felt the divot change and enlarge. It was only a tiny bit,
not enough to push his finger through yet, but there was movement. She was
dilating! His little baby sister's cervix was being force-dilated through his
magic! "I feel it," he growled possessively and pushed his finger into the new
dent. "It really is working."
Velina gurgled in delight, clutching him as he pushed into her unyielding hole.
"Raethen," she whimpered, "my big brother! Y-y-you did it. I-I'm o-opening. M-
m-my c-cervix is finally o-opening for y-y-you!" Tears of joy streamed down her
face.
Raethen whispered the incantation for strengthening and reinforcing the spell
he had already cast. The dented divot shuddered again, dilating more. Raethen
furiously swirled his finger around the tiny growing hole, sending his sister
into fits of euphoria. Now that he knew it was working, he was growing
impatient. He needed to force her open; to get as deep inside her as possible.
"Imagine how good it will be when I'm inside," he growled, thrusting his finger
into the divot. "Open, baby sister. Open! Imagine housing your big brother's
fat cock inside your womb!"
She screamed out another shuddering orgasm and her divot dilated further, all
pain and cramping utterly diminished thanks to the magic and her incredible
orgasms. The more aroused she became at the thought of her cervix opening for
her brother, the more powerful the magic worked to make it reality.
Soon Raethen would pull his finger out and push in his aching cock. Soon, but
not yet. She needed a little more coaxing. He began to furiously run his finger
around the fourteen-year-old's swollen, orgasming disc again, feeling the
changes it had made now that it was beginning to contract in order to open a
hole for him. "Baby girl," he crooned in approval. "That's it. Open up for big
brother. Open a tight hole for me to fuck."
She gasped and shook as she orgasmed around his hand, clutching him. "Your
cock," she gasped. "Big brother's l-long man's cock. Thrusting into m-my l-
little underage cervix. F-filling me! W-want it so bad."
Raethen burned with hot desire at her words. "Then open up," he commanded and
wriggled his finger into her divot harder, forcing her open.
She screamed in ecstasy as he drew another orgasm out of her and triggered
another opening contraction in her cervix. His finger was almost through.
Raethen whispered another incantation, intensifying the spell, sustaining it,
making certain it wouldn't wear off or diminish while he was inside. "Almost
there, baby girl." He corkscrewed the tip of his finger inside the growing
hole. "Almost there!" He twisted his finger left and right, then pushed
forward, burrowing into the hole, causing the fourteen-year-old girl to jerk
and spasm as another orgasm slammed into her.
"Raethen!!" She clung to him, hiccupping between her orgasms. "I-inside m-my
cervix! I f-feel you p-pushing me apart!"
Enough was enough. Raethen's cock was drooling precome all over the bedding and
he was going mad with desire. After another long corkscrewing thrust with his
finger, he withdrew his hand. There was only so much depth he could get with
his fingers anyway; his long cock was far better suited for thrusts deep enough
to reach where his baby sister needed him to reach. Their mutual obsession with
sinking his whole cock into her tight young body was what brought them to this
place to begin with. "Here comes the main course."
"Yes, cock, your big cock, inside my c-cunt, inside my c-cervix, big brother,
oh, hurry, hurry! Split me open!"
With no preamble, Raethen thrust his throbbing, fat cock into her tight girl
hole rather quickly. They had been fucking daily and although Velina was a very
petite and tight girl, she was quite aroused now and always eager for her
brother's over-sized cock. Almost immediately he thrust up and hit her puffy,
erogenous cervix, like he always did when they fucked.
She screamed in delight, but she had not yet dilated enough to allow him
entrance. It was enough for the twenty-eight-year-old though. He gripped his
sister's little hips and began to fuck her, filling her tight underage pussy
deep and slow, making sure to land every thrust hard and firm into her
magically-erogenous cervical ring, the way she loved him to pummel her. "Open
for me," he commanded as he thrust. "Open that dirty hole. Let your brother
inside your precious womb like you've always wanted. Let me fuck that hole that
no other man in the world could ever fuck. Give every inch of your body over to
your big brother. Open up!"
"Yes, yes, yes, it's yours, my body, body pussy, my cervix, my womb. Yours, big
brother, your fuck hole, your cock sheath, take it, ohhh, open, open, little
body, open! This is your purpose, cervix! Open so big brother can f-fuck you!"
And she did, bit by bit. Each time her brother's cock slammed into her
erogenous cervix, the torus dilated a bit more until he was mashing the head of
his cock not into her puffy, erogenous cervix but into a growing hole. As she
begged, he continued ramming into the end of her natural vagina, trying to gain
entrance to the sealed chamber beyond.
Raethen groaned and moaned as he slammed the head of his cock over and over
into his little sister's puffy, swollen cervix. He could feel the opening now,
could push against the hole that had formed, tasting the sweet unexplored
cavern beyond. He gripped her fiercely now as he began to thrust harder,
moaning each time he rammed into that entrance. It was so tight and firm! How
many months had she begged him to do this? How many times had he tried when
fucking her, knowing it was impossible but nevertheless getting off on the
attempt? And now, that extreme fantasy was finally becoming reality!
"Open!" he commanded again, powering his hips into her. "Open your cervix!
Submit to your big brother!"
"Yes!" she screamed between orgasms. "Yes! T-take me apart! E-enter my w-womb!
It's y-yours, big brother! I'm yours!"
Raethen rammed her cervix over and over, growing more and more frustrated each
time he was denied entrance until, suddenly and all at once, he slammed into
her tight ring of magic-enhanced muscles and instead of hitting that familiar
wall his cock was sucked into the tightest, most incredible ring of flesh in
the world.
Velina's cervix enveloped his cock, pulsing with orgasms, massaging. It had
opened just enough that a powerful thrust breached it, but no more. Raethen
howled in unexpected pleasure as the tip of his cock finally broke through, the
flared head stuck inside that indescribable, humming maw.
Velina screamed and screamed as her cervix violent orgasmed from the pressure
of being stretched open by her brother's invading cock. Every fiber of her
being was on fire, attuned utterly to the hyper sensitive cluster of nerves now
being pulled open and rubbed.
Raethen couldn't stop now even if he had wanted. The head of his cock was
through, but her cervix hole was so tight he could not pull out.
So he continued to fuck and thrust, achieving their shared dream, to finally
push inch after broadening inch of his long cock into the tightest, wettest,
most incredible fuck hole he had ever felt. "I-inside!" he gasped as his
fingernails tore the bed sheets. He could hardly believe it himself. "Inside y-
your cervix!"
It was tighter and more pleasurable than he had ever dreamed.
Velina orgasmed non-stop as he fucked her, making the impossible ring shudder
and vibrate wonderfully as his cock slid back and forth through it. As long as
Raethen's cock forced her cervix apart, Velina would orgasm endlessly, riding
one pleasure wave after the other as her entire body focused solely on
orgasming to sustain the opening.
Her whimpers and moans were music to Raethen's ears as he gathered her tiny
body up so he could force her more fully down onto his cock, needing to fuck
every last millimeter of his length through that convulsing, constricting
cervical ring.
"Inside, please," she gurgled. "C-come d-directly i-inside my w-womb... b-big
brother..."
Raethen growled possessively as he slammed his cock harder and harder into his
sister, bruising her thighs and the sides of her cervix with his loving
strength. "Yes," he gasped as he felt his balls tightening, the come inside
churning like magma. "And soon I shall find a spell to grow my cock even more
inside you. To fill your womb completely."
Velina could only shudder out another, even more powerful full-body orgasm at
his words. Her eyes rolled back into her head as she rode out the endless
stream of orgasms her brother's cervix-breeching cock was giving her.
Raethen looked down at where her sweet tiny pussy swallowed his fat cock, at
her untouched, swollen clit, hardened nipples and fuck-reddened stretched pussy
lips. Her obsession was so strong that she wanted--needed--only her cervix
stimulated. "Baby sister," he growled, slamming his cock into her with each
syllable. "Inside your cervix, you dirty little girl. Your brother's cock is
finally, utterly violating your aching cervix and you're loving it. You're
orgasming out of your mind while I fuck that inner ring that no other man has
ever fucked before. You're a wanton, mindless, orgasming underage brother-
fucker, and even now you want more cock, more orgasms, more of big brother
inside you."
"Yes! Your come!" she screamed, eyes-begging, her entire body convulsing with
orgasms. "Come inside me!!!" She thrashed on the bed her orgasms were so
strong.
Raethen could resist no longer. He gripped his sister's thighs, slammed his
cock so deep inside her pussy and cervix that at last his balls crushed against
her ass, and blew his load directly inside her womb, spraying ribbon after
thick, potent ribbon of come directly all over the insides of his sister's
uterus. He kept fucking her, pumping her full of incest seed, and her cervix
kept convulsing wildly with orgasms, milking out spurt after spurt of Raethen's
come which flooded her tight interior, sending steaming hot streams of semen
blasting outward to utterly flood her fallopian tubes.
Velina could only gurgle her orgasmic delight as her brother filled her most
forbidden, unsealed inner chamber with his hot incest come. She desperately,
wildly put her hands over her abdomen and rubbed his cock through her body, and
then, moaning lavishly, pressed her fingertips against her ovaries, massaging
them through her own flesh and sobbing into another even more powerful orgasm.
Raethen was panting hard now as he finished inside his sister, completely
drenched in sweat. It was their most intense coupling yet by far, but on the
horizon he could see a future where, with his cock magicked to be even bigger
and longer, they could sustain this feeling for hours.
"Velina," he moaned, bending to kiss her, his cock buried deep inside her womb,
still pumping out smaller doses of come from the intense pressure her over-
stretched cervix was exerting on him. "My perfect, filthy, horny, underage baby
sister."
She helplessly continued to orgasm over and over again in joyous reply, her
cervix vibrating unceasingly around his cock, making sure to milk out every
single last drop of his precious come inside her. She moaned something that
sounded like "big brother" but her constant orgasms now kept her from proper
speech or thought.
When at long, long last Raethen softened enough to withdraw, the magic
instantly resealed her pleasurably bruised cervix, trapping inside his entire
load of potent incest semen right where he had deposited it: deep inside her
uterus, and so near her entire supply of eggs.
Before the sleep of blissful exhaustion consumed her, Velina stared up at him
with adoring big blue eyes and whispered in a voice worn raw from orgasmic
screaming, "Again. Let's do it again."
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