Thirteen Nights of Loliween by Imouto Kitten

Night 4: Possession

A young girl, not long returned from trick-or-treating, is sitting on 
the floor of her bedroom, still in the tattered, black dress of her 
witch costume as she sorts through her candy haul.

Suddenly, she feels a chill that makes her drop the candy bar she's 
holding and hug herself as she shivers, but just when she's about to 
disregard the moment as the result of aleaky window letting in the cool 
air of an autumn night and resume organizing her treats, her body, 
seemingly of its own accord, rises to its feet.

The girl starts to panic as, unbidden, her hands begin to hike up her 
dress and remove her undies, leaving her naked under her dress as her 
feet, equally unbidden, walk away from her half-sorted pile of candy and 
other treats.

Having no idea where her body is taking her, she is surprised when it 
stops in front of her teenaged brother's door, and without so much as 
knocking, grabs the doorknob, and finding it unlocked, barges in.

Her brother is sitting in an overstuffed easy chair, reading manga when 
he looks up at the sudden disruption to his evening, grumpily asking, 
"What do you want, squirt?"

Cheeks heating up, the girl tries to apologize, "So-sorry, big brother, 
bu...but my body isn't listening to me." the claim so outrageous as to 
sound fake even to her own ears as whatever force puppeting her makes 
her close the door, making sure to lock it this time and close the 
distance before kneeling in front of her brother's chair.

As her hands reach for the fly of his jeans, he cries out, "Hey, what 
are you doing!?"

Nearly in tears at the situation, the little sister cries, "I swear, I'm 
not doing this myself!" as her hands unzip his fly and fish out his 
cock, the touch of a girl, even his own sister bringing the hormonal 
teen to a throbbing erection almost immediately.

"Okay, that's enough joking around, little sis." Declares the brother as 
she opens her mouth with an ah and lowers her mouth towards his 
erection, but just as he's about to push her away, he experiences the 
same chill that had come over his sister minutes earlier, and instead of 
pushing her away as he wants it to, his hand comes to rest on the back 
of her head, pushing her forward, and encouraging her to take his cock 
in her mouth and down her throat.

It's her first time giving a blowjob, heck, she doesn't even know that 
the act she's being force to perform is called a blowjob, but between it 
being his first time recieving a blowjob and whatever force is 
controlling her clearly knowing what to do, he can't help moaning as her 
tongue dances up and down his shaft and her head bobs, partially thanks 
to whatever is controlling her, and partly due to the force preventing 
him from doing the right thing and push her away, the young man 
disgusted that his traitorous cock is enjoying his sister's mouth.

Despite both siblings wishing they could stop what's happening, the 
situation is completely out of their control, and it isn't long before 
the young man is erupting in his sister's mouth. Though she finds the 
taste repulsive and wants nothing more than to yank her head away from 
her brother's cock, the force controlling her has her burying her nose 
in his pubes, forced to inhale his scent as she swallows around his 
spewing tip, incestuous semen pooling in her stomach, and though he 
wants to push her away, the force controlling him has him holding her 
head in place, his hand fisted in her hair as he cums down his sister's 
throat.

As his ejaculation trickles to a halt,, the forces controlling the 
siblings let him let go of her scalp and let her pull away from his 
member as she exclaims, "That was disgusting!" and wipes her tongue on 
the sleeve of her costume in an attempt to get rid of the bad taste in 
her mouth.

But before either sibling can fully gather their wits, whatever is 
puppeting her body makes her rise to her feet, hike up her dress, and 
thrust out her bare butt towards her brother, hips swaying seductively 
for emphasis.

"Wh-where are your underwear!" cries the teen at the sight of his 
sister's naked ass, his cock quickly regaining its erect state despite 
him knowing that he shouldn't be finding such a young girl sexy, and 
especially not his own sister.

"Whatever's controlling me made me take them off before I came in here." 
replies his sister, blushing at being so exposed in front of her brother 
even as she can feel the heat in her face also racing down to her pussy, 
her glistening folds just visible between her thighs from her brother's 
perspective.

But her embarrassment at the situation does nothing to prevent what 
happens next, the girl's booty backing up on its own accord and her 
knees bending until, "Oh god! Is...Is that big brother's thing pressing 
against my kitty?"

He wants to shove her away, but his arms stubbornly lay atop his 
armrests as he feels the warmth of his sister's virgin opening pressing 
against his tip, a trickle of pussy juice running down his shaft. 
"I...I'm afraid so, sis."

She wants to run away, to lock herself in her bedroom and bury her head 
under her pillow, hoping she wakes up to find this was all a bad dream, 
but she's as helpless as her brother as her knees bend further and her 
small hips drop. "OH GOD! It... It's...It's going in! My brother's thing 
is going inside me! Oh god! It's so thick! It's stretching me like a new 
pair of too small tights!"

"Oh shit!" Hisses her brother through gritted teeth, "Sis, you're 
tighter than a nun's ass! Shit, my sister's cunt shouldn't feel this 
good!"

Soon, both siblings are panting as the girl comes to sit balls deep in 
his lap, her preteen pussy stretched nearly to its limit around his 
member, her only saving grace being that she had torn her hymen 
horseback riding when she had gone through her pony phase, so there 
wasn't much pain on her part, though the fit was still tight enough for 
both siblings to feel the other's pulse through where they were joined.

But they don't have long to comtemplate their position before whatever 
is controlling her body has her placing her hands on his knees for 
leverage as she pushes up until her nether lips are wrapped around the 
collar of his prick before dropping back down, both siblings unable to 
hold back moans as she repeats the motion several times.

"Oh god!" She cries in ecstacy, her hips moving of their own accord as 
she picks up speed, "This is so wrong, but it feels so good!"

"Shit," replies her brother, already feeling his climax starting to 
build in his groin once more as his sister's snatch slides up and down 
his shaft, "Sis, if you keep that up, I'm going to cum again!"

Even as her body continues riding his cock, her blood runs cold at the 
realization of just how dangerous her current position is, a horrified 
whisper slipping pass her lips, "No..." before being replaced by 
panicked shouts, "No, no, no! You can't cum in me! You need to hold it 
in! For the love of god, you need to hold it in! I had my first period 
earlier this month, and Mom told me about all the horrors of 
pregnancy... and even if being pregnant wouldn't suck, Mom and Dad are 
going to ground me until I'm 80 if I end up a teen mom, no a preteen 
mom!"

"What do you think they'll do to me?!" replies her brother, gritting his 
teeth in a futile effort to delay the inevitable. "I'll be lucky if dad 
just makes it quick and smashes my head in with a golf club! They 
already think all of my manga is actually porn, how do you think they'll 
take me fucking their little girl?"

"Well, that's all the more reason for you to hold it in!" Shoots back 
his sister, even as she's powerless to do anything other than continue 
riding the dangerous dick buried in her preteen pussy, bringing it ever 
closer to its eventual eruption.

Naturally, there's only so much a teen boy can do to hold off his 
impending climax when he's being squeezed by a snug snatch, even if it 
belongs to his sister, and all he can do is whimper a hollow apology as 
he loses the impossible battle, "Sis, please forgive me!"

Feeling something warm and sticky blooming deep in her belly, the girl 
cries out, "No! Nononononono! Don't cum in me! Stop cumming in me!" 
right before her own climax takes her over, her panicked protests giving 
way to incoherent cries of unwanted pleasure.

As the siblings come down from their orgasms, the girl is on the verge 
of tears even as whatever is controlling her body has her lean back and 
twist around to throw an arm around her brother's neck as he leans down 
against his will to capture her lips in a kiss far more passionate than 
siblings should ever share.

After several minutes of making out and giving his seed time to marinade 
in her womb, another chill runs through them, and realizing they now 
have control over their own bodies again, they break the kiss and she 
lunges away from his lap, landing hard on her rear before pulling up her 
dress to examine the damage, quite a bit of his seed seeping from her 
well fucked and inseminated pussy.

<hr>

As one set of siblings worry about the reprecussions of what just 
happened and how their parents will react, another fade into view high 
above the house they just left, looking very similar to the pair they 
just visited aside from being made of silvery, translucent mist instead 
of flesh and blood.

"Did you enjoy yourself, little sis? Replies the elder of the two 
ghosts, a splatter of darker silver upon his chest resembling a knife or 
gunshot wound hinting at a grisley death as he tries to cup the younger 
girl's cheek, the two intangible even to one another.

Sighing, the younger ghost, hand-shaped bruises upon her somewhat 
crooked neck, replies, "It was nice, but I don't think our hosts enjoyed 
it much..." Glancing down at the house below, a forlorn expression on 
her pale face, she adds, "I wish we didn't need to possess people to 
enjoy some semblance of physical affection like what we shared before 
that man went crazy... or that it wasn't so hard to find compatible 
hosts who would be willing participants."

"I wish we didn't have to draw others into our shared suffering either," 
replies her brother, "But what else is there for a couple of forsaken 
spirits such as ourselves?"

"I guess you're right," replies the girl, doing her best to take her 
brother's offered hand, "But let's try to find a girl who's already in 
love with her brother next." and with that, the two fly off into the 
chilly, October night.