All participants are totally fictional.
The story is fictional, mostly...

Preface
This is my very first erotic story. I am not a native English speaker. Bare with me.
The atmosphere for this series is more or less inspired by books and films like the exorcist.
Hope you like it.
Comments are welcome!

Alisson lives with her older sister, Rebecca, her twin brothers Jonathan and Nathan and the house pet, a black long haired shepherd dog, named Benji. Her father is abroad almost all of the time. Her mother died when she was nine,
The girls share everything. They don't really relate to the twins though.

Ali doesn't know that evil let its eye fall upon her. Nor that Benji is actually one of his demons.



Alissons Descent
Part 01

Day1 - Late afternoon

Ali had always been an inquisitive kid.
When she was a child she would always climb, kick or throw things that other kids wouldn't go near.
Not that she was a tomboy or anything. Far from it.
She considered herself and was considered by everyone else, a proper girl.
She was pretty. Slim, tan, tall, blonde, with perky breasts and a firm ass. She had big, beautiful hazelnut eyes a pony and a shoulder length tail that bounced and swung when she moved, like the thing you tried to grab on the fairground carousel when you were seven.

Now, in the summer when she had just turned seventeen, she hadn't lost any of her adventurous, coy and upbeat temperament.
She was the kind of girl that thought life was for having fun and laughing, and showing off. And never letting a boy get too close.

Yes she was a cock tease. But everyone forgave her for the joy and light she could bring to a room, just by entering it.

The sun was beginning to get lower on the horizon as Ali lit a huge joint and leaned back in the chaise longue on the teak terras at the rear of her fathers house.
She looked on the grounds that stretched  beyond the trees and bushes a few hundred yards away. There was not a sound to be heard. The branches and their leaves hung still in the windless late afternoon heat.
She took a sip from her refreshing but way too strong screwdriver and spilt some on the oversize white shirt she had liberated from her fathers closet. She had been running around with that, small white panties and nothing else on all day. He wouldn't mind. He wouldn't know as he was off on one of his six month business trips, earning big bucks for some overseas engineering company in Hong Kong or Abu Dhabi or somewhere. 

It couldn't be as hot there as it was here, she thought.
Little beads of sweat formed on her forehead, between her pointy breasts and on the inside of her thighs. She pulled the unbuttoned shirt wider open, pulled up the elastic band of her cotton white undies and admired the trimming Becca had done on her bush that morning. "Nice handy work, sis" she said out loud and she smiled, took a long hit from the enormous joint Becca had rolled for her. Ali held it until she almost choked and blew out the blue smoke.
"Wow Bex, you definitely have the right connections". She rolled back her eyes and settled more comfortably on the chair as she spread her legs wide to get some kind of cooling. Weed always got her horny as hell. and this was the mother of all joints. She felt her pussy twitch, but she fought the urge to touch herself there.

As she lay there, enjoying the buzz from the booze and the weed, she heard the phone ring.

She couldn't be bothered to get it, but eventually she did.

"Hey Al, enjoying your me-time?". It was Rebecca.
"Yeah," Ali sighed, still very buzzed from the joint and the vodka, "Hey Bex, you really should get me in contact with whoever got you this weed, you know? It's really, really good stuff.”
Rebecca could tell her little sis was high and probably pretty boozed already.
"Yeah, dream on" she replied, "I'm not giving you the good stuff until you 're forty" she laughed.
Ali grinned and made a snorting sound while she laughed.
"Hey, when are you coming home?", Ali pleaded.
"Aw, is my lil' baby sis lonely? All alone in the big empty house and no one to play?", Rebecca teased. 
"I'm bored." Ali pouted.
"Sorry, babe, but it might get late. Listen I gotta go. Give Benji a kiss from me, 'K?" said Rebecca.
"OK, I will. Kisses."

"Oh shit" Ali thought, "I forgot all about Benji".

She hung up and called the large jet black shepherd. Ali got out the dog food and went to check his drinking bowl. It was dry as a bone.
Benji didn't come. She looked through the window and scanned the lawn. No dog.
She called again.
A single bark came from inside the house.

Benji was a sweet dog. He would always hang around the girls and was a little overprotecting of them.
 He definitely preferred Rebecca. But when she wasn't around he was always around Ali. He didn't so much as grant daddy a look and definitely avoided the twins, John and Nate. 
So he was the girls dog. And they pampered them.
When they were younger they always included him in their games. They would give him makeovers in their pretend salon, bow ties and everything.
Playing catch with the orange tennis ball was much preferred by Benji though.

When the girls were not around he slept outside, his decision. But when Becca was home he slept in her room.

So Benji was in the house somewhere.
Ali called again as she moved from the kitchen towards the stairs. No response.
As she went up the stairs she heard a very low continuous growling emanating from one of the rooms.
Of course. He was in Becca's room, probably taking a nap. She went further up the stairs very quietly.
Ali came to the door of Becca's room and saw it was half open.
She pushed the door wide open and gasped as she stood as nailed to the ground.

On Becca's bed stood Benji, sniffing at the pillow. But Ali's eyes were firmly fixed on the dogs huge penis, protruding from under his hairy belly. It was as thick as any penis she had ever seen and there was a thick bulbous swelling half way his foot and a half long rigid boner.
Ali looked mesmerized as a few drops of runny seed came out of the tip and landed on the sheets that lay bunched up underneath him.
The dog was masturbating himself on Becca's bed by rubbing his big veined pink cock against the bed linen, while sniffing Becca's scent from her pillow!
Ali watched as the large black shepherd dog hunched and rapidly rubbed his giant penis against the sheets.
Suddenly Benji jerked forward and bit the pillow and she saw a spray of dog semen land all over the sheets.
Ali let out a yelp and Benji quickly turned his head in her direction and looked straight into her eyes as he continued to come.
He kept looking at her with an expression that made her queezy. He looked as if to say: "What? Never seen a dog come before?"
His long tongue hung out of the side of his mouth as he continued to rub his dick against the sheets in a frantic tempo, while never breaking eye contact.
His expression changed as if he was excited by being watched by Ali. As if this brought new dimensions to his lewd behaviour, as if he now imagined what it would be like to make Ali his bitch.

Ali snapped out of her trance and shouted. "Bad dog, Benji, bad dog, get off the bed, get out of here, get out!

Benji stopped and with his tail between his legs and his head held low with his ears flat against his head, he turned towards Ali.
He stepped from the bed while looking up at her and came towards her.
there was still semen leaking from his ever stiff penis.
He stopped at her feet, leaving a trail on the carpet and whimpered.

Ali grabbed his collar and pulled him out of Becca's room, down the stairs and through the kitchen to the patio door.
She sent him outside, closed the door and turned.
Ali was breathing fast and shallow. She was still high. The display had aroused her, there was no denying that.
"Fuck!", she said. She was looking at the floor with the trail of dog semen running al the way up to Becca's room.
Ali would have to clean this up before Becca or the twins came home.
What would they think? she would look guilty of giving more than a hug to the family pet!

Ali went back upstairs to assess the damage.
The sheets on the bed were thoroughly soaked and smelled musky and ozony. A bit like human sperm.
Hesitantly she dipped her finger in a puddle of semen and noticed how runny it was. She smelled her finger and stuck out her tongue to taste it. The taste was not as bad as the smell.
Then she realized what she had just done. "Eeew", she said, and immediately started to gather the bed sheets.


Evening

It got darker outside by the time she had swiped the floor and changed the linen.

She put a bowl of dog food and a bowl of water outside by the door and looked out for Benji.
He was nowhere to be seen.

Ali thought about the dog on top of Becca's bed and she thought about his hypnotizing gaze. She wondered what had made him do that when suddenly she froze.
In her mind the bed was suddenly occupied by Becca, lying on her back with Benji on top of her, doing exactly what he had done while she watched him. Her eyes went big and the sequence repeated over and over in her head.
It couldn't be. Becca would never...
She hesitated. From the day they got him, Benji always slept in her room. They would always go upstairs together. And he was always around her.

"No", Ali thought, "impossible. I know my sister. She would talk about all sort of kinky stuff, like using bananas or cucumbers to get off, but it was always in an "OMG how gross" kind of way.

But the image of her beautiful older sister subjected to the family dog every night, kept creeping up in her mind.
She could still see the dogs huge cock, as he kept rubbing and spraying his cum all over Becca's bed. He had been leaving Becca a little present! Like crapping in a shoe while you're gone for the day.

Ali felt drawn back upstairs. She wanted to know. There had to be proof of some sort. She went back upstairs and with every step she climbed her belly filled with more and more butterflies. She was so excited that she was panting by the time she reached the top step.

She went directly to Rebecca's room and stared at the bed. Her nipples were rock hard by now and cold sweat ran down her sides and back in rivulets. Her mouth was dry and her heart pounded so hard in her chest that she thought she could hear it.
The image of the black shepherd with his pink dick sticking out from his belly was burnt in her memory.
And to think that only hours before she had lain there with her legs spread wide, subject to her sisters skill with the electric clippers.
A shock went through Ali's body as she realized that Benji had not been sniffing Becca's scent but her own.
Her face and chest went dark red and she felt as if she was burning up.

Now the vision before her was not of Becca but of herself, lying there stark naked, spread eagled on the bed, with a big black hairy dog pinning her down!

Another shock went through her body and her clit was so hard now, it stuck out of its hiding place and rubbed against her already soaked white panties. Her sis had done a good job on her pubes.

Involuntarily she reached between her legs and cupped her pussy.
She felt as if she was about to pass out, so intense was her arousal. She had never ever been so horny.
She quickly stepped into the room and wanted to lay down on the freshly made bed to masturbate.
Just at that moment she jumped at the sound of the front door slamming shut. She heard two male voices laughing. It was John and Nate!
"They mustn't find me like this" Ali thought. She was naked except for the open shirt and soaked panties. And she was alone in Becca's room. They would definitely start to question her.
And they were already running up the stairs!

Thinking on her feet Ali could only come up with one thing. She literally dove under Rebecca's bed and bumped into some shoes and boxes while hiding from view.
Luckily she hadn't turned on any lights yet, so she hoped that they would go straight to the den, one storey up.

The door swung open and the light was turned on.
One of the boys went straight for the night dresser and pulled open the bottom drawer.
"Nate, I think we have a slight problemo here." Nate stuck his head in through the door. "Weed's gone", John added.
"Shit, she found out we know where she keeps it", replied Nate.
"Yep. Come on help me look so we can get back to the party. Can't go back empty handed."
Ali considered her options. She could come out of her hiding and confront the co-trespassers or she might risk it and keep very very quiet.

Nate and John quickly went through all the drawers and closet space in the room.
"Look under the bed".
A hand appeared and swept the carpet at less then two inches from Ali's nose.
She quickly took a box that was to her right and shoved it in the direction of the hand that was already on its way back.
"Got something".
The box was pulled from under the bed.

It was silent for a few seconds, then she heard the two boys burst into laughter.
"OK! There's weed, and then some."
Laughter again.
"Did you know?"
"No man, I had no idea. Who would have thought? Lil' sis, you big slut!"
Laughter again.
"Listen, she'll know we found her stash. Let's take it all. And this, this and this one too. I got myself an idea."
Chuckles.
"You so bad, Nate, so bad."

The box was pushed back against Ali's face. The light went out and the twins left.

Ali dared not move an inch until she heard the boys running down the stairs and slamming the front door behind them.

Quick as lightning, Ali crawled from under the bed and ran to her room, locking the door behind her.


Day1 - Night.

Ali was out of breath and leaned against her bedroom door.
“Shit, that was close”, she thought. She was still horny and pumped with adrenaline.
She was also very sweaty. She smelled her armpits and made a face.
“Phew, I stink”, she said.

Ali decided to take a refreshing shower and afterwards she could go sit on the terras some more. She still had some booze and she remembered the half smoked joint on the table outside.
That would help her relax.
She undressed quickly and left the shirt and panties on the floor.

She went all the way across the hall, loosened her hair band and went into the bathroom.

Ali was just soaped in as she heard the front door slam shut once again.
She quickly turned the shower off and listened for the twins.
“Shit, they're back!”, she thought. But then she recognized the voice of her sister.
 “Yeah, it'll be OK. No I'll be really careful. Everything will be set when you arrive. You can count on me”. A pause. Then: “I promise”. Another pause “I promise”. Pause. “Please... I'll be a good girl... But... I promise.” Then Becca whispered something that Ali couldn't make out. Then again “I promise, she won't”.

After that there was silence. The conversation had ended.
Ali tip toed on to the landing and looked down.
There was Becca, walking towards the kitchen. She heard the fridge door, then the sliding door to the terras opened and shut again.

Ali tip toed back to the bathroom and turned the shower back on.

All clean and somewhat calmed down from all the excitement earlier, Ali went back to her room.
Just as she entered, she heard the sliding door again and then footsteps on the stairs.
Ali waited and listened.

Becca came straight to Ali's room, at the end of the hallway.
“Al, you there?” The door was pushed open and Becca stood right in front of Ali, who was still naked.

“Hey, Bex, you back already?”
“Yeah, I left so I could spend some time with my bored lil' sister!”
Ali felt guilty somehow. Should she tell Becca?
“Great! We can hang on the terras and smoke.”
“Sounds fun”, Becca replied.

Rebecca looked down Ali's graceful body.
“You should totally let me shave you”, Becca said with a grin. You have the bod' for it sis”.
Ali struck a pose. “Ya think?”, grinning from ear to ear.
“Man, I can't understand why you're not out there partying right now. You know, live life to the fullest and all”.
“Yeah, maybe”. Ali looked down at her nicely trimmed pubes. “I think you should shave me”.

Becca turned on her heals and skipped towards the bathroom. “Let me get my gear”.
Ali was about to shout: “What, now?” but didn't.
Ten seconds later, Becca was back with soap, a cup of hot water, a brush and a straight razor.
She had put some blue surgical gloves on,

Ali protested. “Shouldn't we use a safety razor?”
“No no no. You can't get a result like with a straight razor. And it's safer if you let someone else do it, someone with experience. Like me.” Now Becca was grinning at the sight of Ali looking at the razor apprehensively.

“What's with the brush?”, Ali asked.
“Same principle”, Becca replied, “with a brush you get better foam and a softer experience...”
Now Ali looked at the big shaving brush, made of stiff, pliable pig's hair. She felt the butterflies in her tummy again.
“... and you get more fun!”
Ali didn't know what bothered her the most: the sharp razor or the tickling brush, both in the experienced hands of her big sister.

Ali lay down on the bed and opened her legs wide, feet pulled up to her bottom.
That was when she realized that she was so excited that she was wet. Becca would know!

“Open wide”, Becca said laughingly in a dentist voice.

Ali complied and let her knees fall to the bed. She felt very exposed to her sister's gaze.
Becca took a pillow and shoved it underneath Ali's pelvis. Ali lay there like an open book.

Becca didn't seem to notice the state her little sister was in, dipped the brush in the hot water and started making foam.

With the brush held up, Becca said “Ready?”
Ali bit her lip and nodded. She was turning red already.

Becca started stroking her sisters tender flesh with the brush. First all around the outside, then her under belly and finally up and down her slit.
Every time the brush passed her clit, Ali gasped.
Becca did notice this, but didn't let up. She really got into soaping her baby sister up good.
She started swirling the brush and slowed down each time she came close to Ali's most sensitive spot.
“You OK honey?” she asked Ali in an overly innocent voice.
Ali was now very sensitive. All she could do was nod. She was as close to an orgasm as she had ever been that day. 
“Hold! Hold on! Ho!” Ali said out loud as she grasped the duvet beneath her, readying herself for a massive orgasm.
But Becca didn't stop until she felt every last inch was soaped to perfection.
Ali's bum didn't touch the pillow any more and her muscles were all tensed up.
That's exactly when Becca chose to stop.

In disappointment Ali let her bottom drop back to the pillow while Becca opened and held up the raiser, grinning her teeth bare. Becca's eyes were like on fire and some perspiration formed on her forehead.

Ali opened her eyes and Becca asked again: “Ready?”
Ali just stared at her older sister in a daze.
“Hold still now, babe.”

Becca started shaving, while Ali tried her best not to shake too much.

“There. All done”, Becca said light heartedly. “You sure are a scaredy cat, sis”, Rebecca laughed.

Ali looked down at her perfectly shaved pussy.

“I'll be right back”. Becca jumped off the bed and ran towards the bathroom again.
When she came back, she had a wet towel and a small jar in her hands.

She expertly towelled her sisters pussy with the hot, wet towel, and opened the jar.
“This will sooth the burn and prevent infection. You want me to apply it?”
Ali had now completely surrendered and just nodded.
Becca grinned again.

She opened the jar, got some ointment on her fingers and started massaging her sister's pussy.
“This is a special recipe, which also numbs the region quite a bit. It really helps.”

“Numb?, I'm not sure that's what I need or want right now”, Ali thought.

It was a cooling soothing sensation. A bit like tiger balm, without the tiger.
Or so Ali thought.

Becca now really started massaging Ali's pussy. But Ali couldn't really tell what she was doing, only that she was getting a really nice tingly feeling in the general area.

The more Becca massaged, the more Ali seemed to get into a trance like state. Afterwards it would seem as if she had dozed off.

Becca now massaged her sisters clitoris with vigour. She stuck two fingers up her pussy, while rubbing her clit with her thumb. Ali was totally out of it. She just lay there in a complete haze with her eyes closed.

Then Ali started to cum. At first only her pelvis undulated, but soon her whole body was spasming violently. She was screaming and grunting like a wild animal, pounding her pelvis on the fingers inside her. Rebecca kept masturbating her little sister until suddenly it stopped.
Ali had passed out.
She still had long lingering spasms which almost crushed Rebecca's fingers.
She pulled the fingers out and wiggled them.
“The force is strong with this one”, she said jokingly.

She crawled over to Ali's face and looked at it. She looked so innocent and young and fresh, it almost broke her heart. She kissed her full on the lips and let her tongue slip a little inside Ali's mouth.

Rebecca removed the gloves, pulled the pillow from under her sisters bottom and covered her up with the duvet.
“Sleep tight, baby”. Rebecca took her gear, went outside and gently closed the door behind her.

In the hallway she took her phone out, dialled a number and said: “It's me. It's started... Yes, the soap and the balm worked just fine, Master.” Then she hung up.
