Penny grunted as she shifted the heavy box across the attic. Her sister Yvette grunted in agreement as the pair pushed and dragged the box towards the steps. They had been sorting out the attic, of their new home for the last few days. The pair had moved into the house together two months ago. Two months during which they had cleaned, painted and decorated the house to make it liveable. It was not much, just a small two bed semi-detached house in a slightly dodge area. However, it was their’s and not too far from their family, friends, and work. Finally they had got round to sorting out the attic. Only to find it full of junk. Luckily one of their friends had offered the use of their car to take it all to the local skip for recycling. It had taken all weekend to just clear half of it. Now the sisters were moving the last bits closer to the stairs. To make it easier to bring it down next weekend.

Penny stretched looking round at the last few items resting against the far wall. Yvette smiled at the exaggerated sigh Penny gave. It was not obvious at a glance that the pair were sisters, they had very different appearances. Penny was the oldest at twenty two. She was short, a couple of inches under average height. She had short, stylish black hair and dark eyes. Her figure matched her size in that it was small, but not too small. Her breasts were not tiny, instead they matched her frame perfectly. Even if she would have preferred them to be bigger. They were nice, firm and round. She had a nice set of legs, and an ass many women would kill for. Yvette was three years younger, but actually looked older with her figure. She was taller than Penny by almost six inches. With long straw blonde hair and dark blue eyes. Her figure was fuller, with large globular breasts. She had a slight hour glass look about her. With wide hips and a fuller ass. Her legs were long and shapely. It was only in their faces that the fraternal similarity was obvious. Both had the same round faces, with the same small nose and full mouth. Each having the same slight elfin look to their eyes.

After the first day the pair had quickly figured the attic was very warm to work in. As a result they were wearing slightly skimpier clothing than would be normal for early spring. Penny was in a small cut off style pink sleeveless vest and a pair of tight denim shorts. Yvette was in a black playsuit with white hearts printed on it. Both had on simple pumps and ankle socks just to avoid stepping on anything too sharp.

“Only a few more things.” Penny said looking at her sister.

“Yeah, but that one bit of wood looks heavy.” Yvette said pointing to a large piece of wood resting against the back wall. It looked like it had once been the back of some large piece of furniture. Penny could still see the joints where it must have been attached. She had to agree that it did look heavy.

“I’m sure we can move it together.” She said, “come on lets get it over with. The rest looks light compared to it.” Now it was Yvette’s turn to sigh, but she nodded and the pair went over to the wood. It was heavy, but turned out to be not as bad as they thought. Between them they fairly easily moved it. As they headed back Penny noticed something on the wall behind where the piece of wood has stood. She took a closer look and found that it was actually a carving in the wall behind.

“What the hell is this?” She asked, pointing to the carving. Yvette looked up from where she was just lifting a small suitcase. She shrugged, and shook her head.

“Fuck knows.” She said, Penny took an even closer look. The carving was in a strange circular pattern, almost like a maze. Positioned around the design were strange, disturbing looking symbols. She reached up to run her hand over the nearest of the symbols. As she did her finger caught on the edge. Penny winced as the wood dug into her finger.

“Shit!” She muttered as she pulled her finger back. Blood dripped from the cut, she sucked on it muttering to herself.

“What you done?” Yvette asked.

“Cut my fucking finger.” Penny said around the digit in her mouth.

“That was silly.” Penny glared at her sister, and was about to respond with a suitable insult when Yvette gasped and pointed at the wall. Penny turned to look and froze in shock. The pattern was filling with blood. The few drops that had landed on the wall were now spreading around the design. Expanding well beyond the small amount that had been left. As the design filled with blood it began to shift, rotating slowly. Penny took a step back, blinking and shaking her head. At first she thought she was seeing things. Then the design began to rotate faster. By now the whole thing was filled in with the blood. It began to glow, first it was a deep blood red. Then it turned brighter and brighter. Until neither of them could actually look it was so bright. A few seconds later the glow died. Penny looked back to see that the wall where the design had been had vanished. Replaced by some sort of swirling vortex of what appeared to be flame and smoke. As she watched a figure appeared out of the swirling flame, stepping into the room. Penny’s eyes went wide in horror, she heard Yvette scream sharply beside her.

The creature that stood before them was something out of a horror film. It’s skin was jet black, looking like it was some sort of leather. It’s feet and hands ended in vicious looking claws that seemed to glint in the light. Out of it’s back stretch two huge black wings that it held open, filling the attic with them. The creature was all muscle, pronounced and firm. It’s arms bulging with the muscles. But it was the thing’s face that was the most frightening. It had no nose, instead the lower part of the face was taken up by it’s large mouth. A mouth filled with sharp, long teeth. There were no eye’s in the sockets where there should have been. Instead each socket was filled by a single deep red flame that seemed to burn into Penny as the thing looked at them. Penny took a second step back, about to flee for the stairs. Before she could the thing pushed it’s arms out towards the pair.

The skin on it’s forearms rippled, then exploded as tentacles shot out of it’s arms towards them. Both sisters were caught by the tentacles, lifted into the air. Wrapped in a tight embrace that they could not escape from. The tentacles wrapping around their arms, legs, body and necks. The thing looked at them for a moment. It’s gaze burning against them as it.

“Who summoned me.” It said in a voice like thunder. It seemed to echo around the attic, possessing them to respond.

“No one summoned you.” Penny said, then wished she had not as it turned to focus it’s stare at her.

“Someone opened the portal, blood was split.” It said in the same powerful, terrifying voice.

“It was an accident, I cut my finger on the wall.” Penny told it, the creature looked at her for a moment. It gave a sharp, dismissive snort.

“I was summoned, I will be worshiped.” It said, flicking it’s fingers. Penny felt the tentacles moving, pressing against her. Suddenly her vest was being ripped apart, her shorts torn off her. Then her bra and panties were destroyed as well as the tentacles writhed over her body. Beside her she could see the same thing happening to Yvette. In mere moments the pair were naked. Now the same tentacles rubbed against their naked flesh. Penny gasped at the feel of them against her. Rubbing over her small nipples, making them hard. Sliding along the skin of her thighs, then touching her pussy. Rubbing at her clitoris with seeming intimate knowledge of how she liked to be touched. Against her will she felt herself respond, gasping and moaning at the touch of these supernaturally knowledgeable tentacles. Next to her she heard Yvette murmuring, then moaning as the same thing happened to her.

As the thing touched them with it’s tentacles it smiled, licking it’s lips with a long thin tongue. Then that tongue shot out towards Penny, stretching from it’s mouth to reach her. Before she could even react it was licking inside her. She moaned as it licked perfectly at her. Moving inside her with absolute skill and knowledge of her needs. The thing gave a soft murmur as it licked inside her. As Penny watch she saw it’s cock growing hard. It grew bigger, and bigger, not seeming to stop. Until finally it was erect, hard, massive. Penny gasped in shock at the size. The thing was, as the old saying went, hung like a horse. Only it’s cock looked wrong some how. As if it was twisted around itself. Then the tongue inside her moved up to her clitoris.

“Oh fuck.” Penny gasped sharply at the feel of it licking at her. Again the creature’s tongue moved perfectly against her. Licking with just the right amount of pressure against her. Moving over her clit in the way she liked. Changing it’s movements just at the right moment to build up the fires growing inside her. “Oh, oh fuck, oh yes.” Penny groaned in pleasure as the thing brought her closer and closer to cumming. Only for it to holder her on the edge. With consummate skill it seemed to keep her just on the peak without tipping her over. Penny gasped, moaned, cried out in sharp passion. The tongue licked at her, just enough to hold her there.

“Please, oh please, yes, oh there, that’s it, oh that’s so.” With a squeal she felt it push her into her orgasm. Waves of passion flashed through her. Lightning shooting along her nerves. She bucked, jolting against the tentacles holding her still. Her body jerking as pleasure blasted through her. The thing’s tongue licking hard at her clit, adding to her orgasm. Penny cried out again and again as the pleasure overwhelmed her. The orgasm stretching on and on, longer than it seem possible for an orgasm to last. It was not a series of them, instead a single massive orgasm that lasted and lasted. Until her body reached the limit of endurance. Her skin was hot from the repeated stream of pleasure. She could feel sweat running down her back and legs. Finally the orgasm died, the tongue pulled back from her. Penny gasped hard for breath, if she had not been held up she would have collapsed to the floor. Her body felt like every bone had been removed.

The thing turned towards Yvette, pushing it’s tongue against her. Almost instantly Yvette began to cry out deeply. Penny knew from previous experience that Yvette was loud during sex. Her squeals of pleasure began to grow in volume and shrillness as the thing licked at her. She gasped hard, crying out in high pitch squeals of passion as ,like Penny it brought her to the edge of cumming. Penny hung from the tentacles, which were still rubbing at her, watching her sister as she was held on the edge.

“Oh my, fuck, oh please make me, oh please, please.” Yvette begged as the need to cum became overwhelming for her. Penny watched as the tongue licked hard at her sister. The sight aroused her in a way she knew it should not. She felt a flash of jealousy. Not that the tongue was no longer licking at her. Instead she wanted to be licking at her sister. The thought stunned her, she had never, ever felt like that before. She had always considered lesbianism to be wrong, for her at least. She could not remember ever feeling sexually interested in any woman before. Now she was thinking these thoughts about Yvette, her sister of all people. The idea should have repelled her, she knew that. Instead it just aroused her more. Yvette’s screams of passion as the creature stretched out her orgasm were loud, shrill. Each one filled with wild passion. Like Penny she bucked and jerked in the tentacles that held her. Then finally the thing pulled it’s tongue away from her. It shrank back to it’s mouth. Yvette’s squeals turned to gasps as she came down from the massive orgasm. The thing licked it’s lips in obvious delight.

“Umm, you two have such tasty cunts. I can’t wait to fuck them.” It said, pushing his groin out towards them as it spoke. Penny gasped at the almost carnal lust that flashed through her. As well as the sharp fear, there was no way she could take that massive cock inside her. Then she gasped again as the thing’s cock began to uncurl. It divided, opening into three cocks. Each thick and long, with large heads. The three cocks waved in the air for a moment. Before stretched towards Penny. She watched in open mouthed shock as they flew towards her. Three, how was she to take three thick cocks into her pussy. Just before they reached her the three split. One moving between her legs, the second moving under her to hover behind her ass, the third moving to in front of her face. Penny suddenly realised what it was about to do to her.

“Oh shit no, fuck me.” She gasped in amazed horror.

“Ok.” The thing said, and the three cocks thrust into her. Penny’s squeal as her pussy and ass were sharply penetrated was stifled as her mouth was filled with a thick cock. Pain, pleasure, disbelief, horror all flashed through her brain. Sensations instantly overwhelming her mind. She could feel each cock thrusting into her. Ramming hard inside her body. Never had she allowed a man to fuck her ass, now this thing was ramming in hard. Pain shot up her, but with it came inexplicable pleasure. Why she had ever kept herself from feeling this she did not know. The pleasure was added to by the thick hard cock ramming into her pussy. Pushing deep and fast into her. Stretching her wide as it entered her. She would have screamed in passion, but for the cock pushing down her throat. She should have gagged on it, it was pushing so far down her throat. Instead she was sucking hard on it, taking it each time it pushed into her.

“God, Penny.” Yvette screamed at the sight. Penny just moaned around the cock in her mouth. Her body reacting to the wild mix of sensations. Hard cock pounding at her, rocking her repeatedly. Thick, wide head’s stretching her ass and pussy. Pushing deeply into her, filling her to the utmost.

“Oh yes, yes.” The thing said. “Oh girl your cunt and ass are so good. So tight and wet around my cocks. Take them in you deep girl, deeper.” As it spoke it’s thrust harder into her, pushing further into her. It felt as if it was going to push right into her chest. The air was driven from her lungs. Penny drew in sharp breaths through her nose. Gasping loudly around the cock push down her throat. Heat spread rapidly from her groin. Each thrust into her body stoking that fire. The pain and pleasure from the way it was ramming up into her virginal ass mixed with the hard pleasure from it’s cock pounding into her pussy. The wild sensation of swallowing it’s cock into her mouth added to that pleasure. She could feel the tentacles writhing over her body. Brushing over her nipples and against her clit. Sending even more waves of pleasure through her.

The passion was too much. With a wild squeal she burst into an orgasm. Gasping and squealing as she came. Each thrust into her adding to that passion. Cocks pushed up into her pussy, deep into her ass. Far down her throat until she could hardly breath. That first orgasm was followed instantly by a second even stronger orgasm. A third followed straight after. Her throat became sore from the squeals of passion.

“Oh baby, cum for me again, and again girl.” It groaned as it pounded at her harder and harder. Driving it’s cock deeper into her. Now she was sure it had to be tearing into her. Instead only pleasure filled her. A fourth orgasm blasted her body, shaking her to her core. Her body shuddered, jerking hard in the tentacles. To Penny’s amazement a fifth orgasm blasted her. Now she felt exhausted from the constant assault of pleasure. Her body could not take much more of this. She was covered in sweat, it dripped off her breasts, legs, back. She knew her hair was matted with sweat. Still the thing rammed into her, in and out. Hard, fast, deep, pounding into her pussy and ass simultaneously. Pushing into her mouth. Penny sucked hard on the cock in her mouth. Unable to do anything else, driven to take every thrust by a uncontrollable urge to satisfy this monstrous lover.

Without warning the three cocks came at the same moment. Cum simply exploded into her. Hot, hotter than normal cum. Pumping into her pussy and ass, down her throat. The sensation triggered a final massive orgasm. The cum simply kept on pumping into her. She gagged as it pumped down her throat. The cock pulled out, cum spurting onto her face. The other two did the same, pulling out of her. Cum flashed against her thighs and stomach, over her ass and back. Hot spurts splashing against her skin. Penny cried out in passion at the sensation of the cum hitting her. She arched her head back, eyes closed, mouth open to catch as much as she could. She felt it landing on her cheeks, forehead, in her hair. Spurting against her stomach and back. Dripping down her legs, ass, neck. Landing on her breasts. The tentacles wiping it against her skin, rubbing it into her breasts and stomach, legs and ass. Finally the crazy, carnal shower ended. The last drops landing on her breasts, ass, on her tongue. She swallowed it down her throat. Hanging in the clutch of the tentacles, cum covering her so much it ran down her body. Never had she felt so dirty, so wild or so sexually fulfilled.

The thing watched her for a moment. It’s cock’s floating in mid air over her. Then they moved to hover over Yvette. She looked at them her eyes wide. Slowly shaking her head in disbelief and denial. Penny watched her sister, knowing how she was feeling and what was about to happen. The cocks moved towards Yvette. Hovering around her, one by her pussy, the other by her ass. The third above her face.

“No, no, you can’t.” Yvette gasped as she felt the three cocks moving against her. Then she gasped as she was entered. Penny looked on as the cocks thrust into her sister. Pushing into her pussy and ass, parting her lips and pushing down into her mouth. Yvette cried out, muffled squeals around the cock in her mouth. As Penny watched she again felt a twinge of jealousy. She wanted to be the one making love to Yvette at that moment. Instead she had to watch as the thing rammed it’s three cocks into her sisters body.

Yvette’s muffled cries soon turned shrill with passion. Penny watched as her sister took each cock deep into her. As she was fucked hard and deep. Each cock pushing into her deep. Thrusting up into her pussy and ass, pushing down her throat. Penny could hear Yvette sucking hard on that cock. Watched as her sister swallowed as much of it as she could into her mouth. Her body rocking with each thrust. Her legs shaking with each hard thrust. Her large breasts bouncing under the repeated pounding. Her head hung back, hair hanging down behind her as she swallowed the thick cock into her mouth. Her cries high pitched around the cock. Her eyes wide, her chest rising and falling rapidly as she gasped for breath. The thing was groaning softly as he fucked her with his three cocks.

“Oh baby, yes, so hot. So deep in your cunt and ass girl.” It moaned as it continued to fuck Yvette. Penny looked at it, seeing the look of sheer pleasure on it’s face. The thing was obviously enjoying her sister. Penny hoped, guessed, that it had equally enjoyed her. Yvette gave a shrill cry that pulled Penny’s attention back to her. She saw the way her sister’s arms and legs jerked and knew she was cumming. Just like Penny had. Penny watched as Yvette came again and again. Squealing around the cock in her mouth. Her body jolting and writhing in the tentacles that held her up. The image aroused Penny, causing her to gasp softly as she watched her sister cumming. Penny watched breathless as Yvette had five orgasms one on top of another. Then the thing groaned sharply. She saw Yvette shudder as it came in her. Like Penny she choked on the cum in her mouth. The thing pulled out, pumping it’s cum onto Yvette’s face. It pulled out of her pussy and ass. Penny watched as she knew Yvette had watched her, as cum splashed over her sisters body. The thing moaned repeatedly as it came. Spurting white cum all over Yvette, until her body was covered in it. Yvette hung, gasping, reveling in the experience.

Finally the thing’s orgasm ended, the cum stopped splashing on Yvette. It’s cock’s retreated, sinking back into it. Curling back around themselves as they did. Then it lowered the two sisters to the floor. Fortunately close to something to hold onto. Penny’s legs felt so numb, so weak. She clung to the piece of wood next to her. She could see Yvette clinging to a box in equal desperation. The thing looked at them, it’s face content but still lustful.

“Umm, I’ve not been worshiped that well for such a long time.” It told them, Penny looked up at it.

“What are you, where did you come from?” She gasped.

“What I am has no translation in your world. Expect maybe to be called a demon, but even that is misleading. I live on another realm of existence, one where I am powerful and feared. I can enter this realm through portals like the one in your wall.” The thing gestured to the vortex behind it.

“Where did that come from?” Yvette asked.

“The people who first lived here worshiped me, they put the portal up. But it has not been opened for some time.”

“I’m not surprised, that was nearly sixty years ago.” Penny said.

“I have no knowledge of your time passing. However I will return at the same time in what you would call a week. I will require a sacrifice, if you do not have one I will take one of you. Do not attempt to run, for I will find you anywhere. Now I have had your worship I can find you.”

“A sacrifice!” Penny gasped, at the same time Yvette said.

“Next week.”

“Yes, next week and there needs to be a sacrifice for me.”

“What kind of sacrifice?” Penny asked.

“A person for me to take, one who’s life I will claim instead of yours.” The two sisters gasped in horror at the thought. “I will return, be sure of that.” The creature said as it stepped through the portal. As Penny watched the vortex slowed, fading until there was only the design on the wall. For a moment the two of them said nothing, did nothing. Then Yvette turned to look at Penny.

“Holy crap.” She said.

“Something tells me that there was nothing holy about that at all.” Penny replied.

“I know but fuck, that was so crazy but so good. It shouldn’t have felt so good.”

“Tell me about it, and was it me or did you too get very weird feeling.” Penny said carefully.

“Yeah, so it wasn’t just me who was jealous.” Penny nodded quickly.

“Yeah, when it was licking you out. I wanted to do that, and there’s no way I should have felt like that. “

“And while you were being fucked. I wanted to be the one making you cum like that. That was freaky, I mean I’ve never been interested in women at all. And we’re sisters.”

“I was freaked out too.” Penny admitted, “but for now I need to get clean. I’m starting to feel very icky covered in this stuff.” Yvette nodded, as the pair carefully head down the attic steps.

“Oh damn it.” Yvette suddenly said as she reached the bottom. “I liked that play suit, and now it’s gone.” Penny smiled in sympathy, she had liked the shorts. They had always looked good on her. The pair of them went into the bathroom to shower. Then they headed into their bedrooms. Penny stopped when she spotted something on the bed. All the clothing that the thing had destroyed was replaced in perfect order. She grabbed the shorts and top and quickly dashed out into the hall. Yvette was just coming out of her room holding her play suit. The pair looked at each other and laughed.

“At least you got your play suit back.” Penny said after a moment. Yvette nodded slowly.

“Now all we have to do is figure out what we’re going to do next week.” She replied, Penny sobered up quickly at the thought.

“We’ve got a week to figure that out. Let’s not worry about ti now. I’m so exhausted I just want to sit downstairs and watch tv for the rest of the night.” She said, Yvette agreed so that’s what they did.

---