Killstar Sister (2)

Author notes: Part 2 follows the crumbling Westermark barrier (negative sexual imprinting) between adoptive siblings... with the help of a sex party hostess who has issues of her own. As before, all characters and situations are fictional, but the idea was inspired by a real event recounted to me 15 years ago, which taught me a lot about how cathartic sexual fantasies take shape. No AI was used, not even to fix my English mistakes. All characters are 18 or older. Tags: sister, brother, threesome, therapy.

Saturday morning, the day after our first orgy, was surprisingly normal. My sister and I both got right to our studies. Afterward we chatted pleasantly and worked together preparing a big lunch. Tacos! Gina wore a white tank and comfortable shorts around the apartment, braless as usual. I had never really paid attention to her before, but after she accidentally had sex on my lap last night... well let's just say I had new eyes for her. It was not supposed to be that way. We had agreed, "what happened on the sofa would stay on the sofa". But how could I forget? Plus, a couple of things haunted me about our kinda-but not-really-incest encounter.

My doubts revolved around Viv. I had not known as much about her as she apparently knew about me. Up until last night Viv was just a nameless and faceless friend my sister had met in one of her classes. Gina had told her we were siblings, though I'm not sure if the "adopted" part was clear. When she greeted us, she had kissed my sister on the lips after swallowing the cum of two guys moments before. And later, unbeknownst to me at the time, Viv had been watching at least part of our make out session on the sofa. And she had folded Gina's Killstar goth outfit, a sweet gesture, leaving it easy for me to find in an upstairs bedroom at the end of the party. So, just a few weeks into Gina's first semester in college she had already befriended someone I would have previously considered one of the most "dangerous" influences on campus: a recruiter for organized orgies.

Nothing illegal had happened. In fact, the waivers made it clear that even legal drinking was not allowed. No drugs or firearms. No underage, no cameras, etc. And as far as I could tell, the participants tried to follow the rules. But somehow that made it worse. Everyone was sober. They had all made conscious decisions to engage in group sex. Gina and I had been sober, too. The only solace I had was the fact that she had accidentally ended up being fucked in my lap. Neither she nor the guy knew I was crashing on the sofa in that little side room. By the time I realized what was going on my penis was erect and we got off with each other. I had no trouble sleeping that night, comfortable in the thought that the temptation literally thrown upon me was irresistible. Despite that, she and I managed to avoid actual sex. But waking up in the morning I started to wonder whether the "heat of the moment" excuse made it forgivable. Maybe I should have turned it all off? Or maybe I should never have gone to the orgy in the first place, but how could I have let my little sister go to an event like that alone?

I was sitting across from Gina with a row of hard taco shells, spiced ground beef, lettuce, cheese, and tomatoes between us. We dug in at the same time, with an anime playing on the laptop beside us. The show made us laugh together and the climax brought a tear to both our eyes. Sunday was much the same. Neither of us spoke about what happened, and I started to wonder if that was okay. That evening I caught her after her shower to clear the air. Her pajamas were black, of course, but loose and comfortable.

"Hey Brat, are you okay?" I asked. "I mean, do I owe you an apology for what we did?"

Gina looked surprised, "Apology?"

"Yah. I was thinking I should have stopped it before it got out of hand. Sorry."

She hesitated, "But I thought you said, 'No regrets'?"

I did. I had said that. We had been holding hands walking across campus after midnight, and she was snuggling up to me.

"Well. Maybe I am regretting it now."

Her face fell.

"No, Tommy, you don't owe me an apology. I do." She sat down on her bed in the dark. I leaned against her door, and it made an awkward ping as it bounced off the spring stopper. "I know how you are at parties, and knew you'd probably be hiding in a quiet room downstairs." She drew a deep breath like she was about to make a confession, and then it came. "I am not sure what I was expecting to happen, but I was hoping you'd be there. Hoping you'd see me, you know, naked. Or not naked, but something. I don't know. So, yah. If you regret it, then, I'm sorry. I should never have fucked with that guy downstairs."

I laughed a little, "Well, yah. Seeing you naked was one of many highlights."

She looked up with a small smile.

"Maybe regret is too strong of a word," I said. "At the time I enjoyed what we did. And I really liked walking home with you. I'll remember it forever."

"Me too, Tommy." She paused.

"What?"

She looked away, head bowed down. "But for a while, after we came home, I couldn't sleep. I started thinking about what happened. I tricked you. A little bit, I guess. What was I thinking? We almost, you know, had sex. I felt nauseated when that hit me. I shouldn't have listened to Viv."

"So, you regret?" I asked. I could understand that nauseated feeling.

Waves of emotion passed over her face, which was hard to make out in the poor light. I could feel it. Conflict. But then her resolve came back, and a more confident voice answered.

"Only if you do."

Silence grew, the hall light behind me casting my shadow into her room.

"No. No regret. As long as we're okay. But it's confusing."

"Yah. It is. But I'm okay."

"Me too."

I walked in and gave her a hug. She felt good hugging me back.

"Love you, Brat. Lots."

"Me, too, Tommy."

Monday, we got back to work. With two serious students in the house, it did not take long for homework to pile up, and we kind of let it become a crutch to avoid talking about anything serious. Everything revolved around classes. Gina had a liberal arts class with one of my old professors, so I helped her ace a quiz. Later, I was struggling with my major, and she helped me bounce ideas around. Killstar Gina stayed hidden, for a while anyway. Over the next couple of weeks neither of us mentioned parties, and our time together was divided between our books and TV. Mom and Dad Facetimed us once. Of course, we gave nothing but positive news. I bragged up Gina's adjustment to college life, and she told them how much I was helping her. There was no way we would give them any reason to regret housing us off campus. Hanging up they joked, "Stay away from wild parties." We assured them we would.

At some point in September, I noticed Gina becoming more attached to her phone than normal, furiously thumbing text messages, sometimes for hours at a time. She stayed out late a couple of nights. Eventually she admitted she was seeing Viv. That surprised me because I had learned Viv was something of a celebrity on campus. For some reason I had a flashback to high school, when I delayed asking out one of the cutest cheerleaders so long she gave up on me and started dating one of my teammates.

October blew in. Halloween was creeping up and, no surprise, Gina went back to her goth style. I liked it this time. The way she showed her belly grabbed my attention. It was getting too cool for miniskirts, but that just meant her bottom attire was replaced with skintight black leggings that fit so snuggly I could see the creases of her ass. Her lovely round butt was on display every day, and I had to confront my jealousy again. At least one good thing that had come out of the orgy was my realization that my little sister had grown into a sexually active woman. Perhaps overactive, from a protective brother's point of view, but that was up to me to accept. I think our parents saw it happening last year and they really had trouble with it. Whether I was any better remained to be seen. The test came soon.

The day before Halloween Gina came home and brought Viv. We greeted each other and hugged all around. Viv was wearing an all-black leather dress, with leather half-jacket, and I noticed a Blackcraft Cult logo on her choker collar. She loved Gina's Killstar fashion so much she had given her own wardrobe a goth makeover for Halloween. Viv gushed over us, impressed with how well we got along. She knew siblings that had roomed together before, and they fought so much it ruined their relationship. It became clear she knew Gina was adopted. Viv also knew Gina had inherited a trust fund, something we had never told anyone in high school.

Viv, unsurprisingly, was a very touchy-feely person. Her hands were all over me and Gina as we chatted. It was nice. Shoulders, hands, small of my back, all socially acceptable caresses and soft taps. Normally, I am not fond of people like that, but Viv's charm was pleasant and carefree, and within minutes she had us all laughing. I could see why Gina befriended her. I could also see skills that helped make her a successful orgy hostess.

Viv needed help with Art History, making fun of herself for having to take it for a third time while Gina was getting A's, as usual. Viv begged me to let her stay and study. I said it was my sister's house, too, and they did not need my permission, but I gave it happily anyway.

Viv nudged me and winked, "Wise man. You never know when you'll bring one of your lady friends over and need to ask Gina permission to have her stay the night."

Viv and Gina had already eaten dinner, so they disappeared into Gina's room, closing the door behind them.

Did Viv just imply she was staying the night? I was pretty sure she slipped that part under the radar. Later that night I heard passionate moans from her room and several bursts of "I'm cumming". It was always Viv's voice. That triggered my jealousy and protective instincts, and maybe some curiosity, if I'm being honest. I was determined to accept my sister's bisexuality. It's funny how easily I accepted that in porn, but now it was real. And in my house. I jerked off in the shower to Viv and my sister having lesbian sex in the next room. Then I went to bed. Not a peep came from Gina's room the rest of the night.

The next morning, I passed my sister's door, which now was half open. Gina and Viv were sleeping in each other's arms completely nude. It was sweet. I admired Viv's body, her fiery red hair, freckled white skin from head to heel, an arm and one of her breasts laid softly over my sister's smaller tit, all four fingertips resting delicately on Gina's collarbone. At this point I had seen Viv more often nude than clothed. Gina looked vulnerable, like an angel being cradled by a devil. My sister's other tit was highlighted by the soft morning sun, her rosy little nipple relaxed and soft. The glow washed past her supple tummy, illuminating four entangled legs that stretched out long, glimmering past their dainty feet, and dappling the edge of the mattress. My sister's pussy was shaved perfectly hairless, and it drew my eyes. No stubble, no hint of razor burns or raised follicles. Just soft, smooth skin. The more I looked the more I wondered if she was shaved or naturally hairless. We didn't know much about her birth parents, part Asian or Latino maybe, but she had been blessed with blonde hair and ultra-feminine genes. I wondered how different her body was than my own, not just by gender or size, but by heritage, by blood. I could not stop looking. With her lying next to Viv, it was easy to see Gina's petite, perfect body as part of a pair, one of two sex goddesses. I felt no repulsion seeing my sister naked that way. In fact, I was getting harder every second I lingered.

Neither girl caught me looking. I timed their breathing for several seconds to assure myself they both were fast asleep, then nudged the door closed without clicking it. They stayed quiet as I ate breakfast and left for class.

I had an intense three-hour lab and another course with a few hours in between, so I was on campus all day. When I returned home early in the evening, I was surprised by the aroma. Food!

Gina and Viv waved from the kitchen. I saw a blackened roast, rare and bloody inside, an unsliced loaf of rye bread, black sesame bars, a bowl of figs and black cherries, and a fragrant blood-red balsamic sauce steaming in a pot filling the entire apartment with a sweet scent.

The girls were both in brand new goth outfits, similar midi-length black dresses, both with bare shoulders and deep necklines. Gina's Killstar Wraith midi came with a black belt and a shear over-layer that was see-through below her knees, while Viv's Blackcraft Autumnal midi had a lavender orchid print and ruffled bell sleeves. They were both barefoot with black toenails and bustling around the kitchen. Gina's pixie-cut highlight was black now, and Viv had her own red hair piled up high with two strands framing her face, hanging down to her shoulders. They both twirled and struck a pose when they saw me. Viv was a natural model, with her weight shifted to one leg and pushing her opposite hip out. Gina was cute trying to follow Viv's lead.

"Isn't this how men like to see their women?" Viv asked. "Barefoot in the kitchen?"

My? Women? I didn't know what to say. I just grinned like a big idiot.

Gina skipped over with her dress flowing and gave me tight squeeze. Viv followed, hugging me as well, ending with a playful tug on my dick through my slacks. I blinked a couple of times and gave them another lopsided grin. They each took one of my hands and led me toward my room, releasing me at the door.

"Why don't you wash up and come out for dinner when you're ready?" Viv said. "And later, there's a surprise."

I was already surprised.

Gina shouted behind her, "Five minutes! That's all you get or it'll be cold."

It was nice, actually, seeing two pretty women in the kitchen, more dressed up than they needed to be, preparing dinner. In the shower I wondered if this was a joke. Maybe not, but they surely had some mischief in mind. They knew exactly when I would be home, and they really enjoyed showing off their new dresses. Then it hit me. Today was Halloween. The two goth girls were celebrating the holiday. It all made sense. I splashed water and soap around my body, focusing on my pits and crotch, rinsed under the spray, then stepped out to dry myself. I found a Blackcraft tee and black boxers placed conspicuously on my mattress. The boxers had golden pentagram patterns and sported the Killstar logo. I dressed in a flash and came out in my new goth underwear, drying my hair with a small towel.

From across the room Viv gave me a "tsk!" She hurried over, snatched my towel away and threw it back into my room. "No white tonight, Brother. Get with the theme!" She gave me a slap across the cheek then kissed me there while I felt my skin reddening. I let it pass. She casually grabbed at my crotch, which made it waggle as she walked away. I felt cool air. There was no button on the fly, and the heft of my penis was enough to open a narrow gap. Funny how new underwear makes a person feel different. Viv sat down with Gina at the small table. When I followed, I saw both girls' eyes dart to my fly, and I realized the angle was just right to give them a flash.

Viv poured the balsamic sauce over the thinly sliced roast, letting it mix with blood in the bottom of the pan. The aroma made my mouth water. Blood went perfectly with the theme of the night. Besides the rare meat, dark fruits, black sesame bars, and rye loaf, we each had a cup with a black liquid and a lemon slice.

"Charcoal activated lemonade," Gina said.

Then she snapped her fingers realizing she had forgotten something. She leapt up and lit a few candles around the room, bringing the largest one to the table after turning off all the other lights in the apartment.

Viv chuckled but clearly enjoyed the ambiance and seemed almost giddy at seeing me bewildered. "Don't worry, Brother. Your little sister isn't going all pagan on you. It's just a bit of fun." She leaned toward my ear with a hand on my hairy thigh, "It's new to me, too. But I can't resist her!"

Gina sat down and took a deep breath. We paused to look at each other in the candlelight. I grabbed my fork, which got me another slap on my wrist from Viv. "Not yet!" This time Viv hit me harder, and it stung so bad I was trying to think of something to say without ruining the girls' moods. Nothing came to mind, so I let it go again.

Viv looked at Gina like she was waiting for something to happen. Both girls' hands were below the table and Gina fidgeted in her seat. I lowered my hands, too.

Gina took a deep nervous breath.

"Do you want me to go first?" Viv asked.

Gina nodded. Viv nodded back.

With a wiggle and a tug, she drew her entire dress over her head and tossed it onto the coffee table. She sat bare-breasted in front of us in the candlelight.

"My god," I muttered, staring at her figure. She let her red hair down and fluffed it, letting it come to rest at the top of her shoulders. Even in the dim light her freckle pigments gleamed across her chest and her nipples formed puckered tips pointing up slightly to the ceiling.

"I'm not your god, Brother," Viv chuckled, "I'm something else."

So natural. Viv sat comfortable in her nudity, but Gina was still fidgeting. Then she gathered herself and followed Viv's lead, lifting her own dress off, and throwing it on top of Viv's. My sister's tits were much smaller, but firm with no jiggle, and her nipples pointed forward, straight at me. I gulped, looked away, and then back at both of them, trying to acclimatize to their nudity without being too much of a perv.

"Your turn, Brother," Viv said.

My part was easy. I whipped off my Blackcraft tee shirt and flung it on the pile. They both gazed at my broad chest, and it made me feel like a king. I rarely went shirtless, even at the gym, but if I'd get stares like that maybe I would do it more often.

Gina chanted a short phrase in Latin and Viv repeated it. I did my best to mumble something that sounded similar with no idea what it meant. Then we all picked up forks and began eating, as if sitting naked at the table were the most natural thing in the world. In moments we were enjoying our three-way candle-lit holiday dinner. It was a delicious and well-balanced combination of flavors and food textures.

When we finished we all got up and dunked our plates in the sink. I realized both the girls were still wearing their panties, and I had kept on my boxers. That little hint of modesty made our casual nudity all the more present. As we slid past each other in the tiny kitchen, we made no effort to avoid skin contact. Viv, again, was very touchy-feely on both of us, gliding around gracefully with tiny taps and strokes for tactile coordination. A gentle caress across my hip, a single finger against my chest. I realized she was focusing on me. As we finished, she got bolder, scraping her nail across my half-hard dick through my fly gap. I winced, more in irritation than pain. But yah, it hurt, too.

"What's the game, Viv?" I demanded, not angry but expecting an answer.

We stopped our little dance around the kitchen with the three of us practically toe-to-toe. I saw Viv's hand swing toward my face again, and I snagged her wrist before she hit me, holding it firm in the air inches from my face. Viv gave me a sly smile and opened her fist. A pair of black cuffs appeared before my eyes, dangling from her finger. Where did they come from? She could not have concealed them. She must have planted them in a drawer nearby, predicting this moment and my reaction. Well played!

"Surprise," she grinned, wiggling the cuffs under my nose.

I was perturbed. My cock had been up and down all dinner. Trying to relax I released her wrist, but there was no way I was going to let her cuff me.

"I'm not into that, Viv," I said.

"They're not for you, Brother," she said, glancing at Gina.

She placed the cuffs into my sister's open hands and gave her a nod. Gina buckled the first around Viv's right wrist. But she seemed nervous, fumbling with the buckle for the other wrist.

Viv whispered, "You can do it." Viv used her teeth to hold the leather and helped Gina ease the prong in. When it was secure Viv presented her wrists, yanking the chain tight. There were gaps in the bindings.

"It's enough," Viv said, "to help me go through with this."

Maybe I was getting into it. My erection popped up and tented my boxers, widening the fly gap and letting in so much air I had to check to make sure my dick hadn't poked out. There were so many twists tonight I didn't know what to think. It dawned on me that Viv was the only one with a clear idea of what was going to happen next. Gina was in on it, but she was nervous. The older, extremely more experienced woman was controlling the situation. Maybe those cuffs were for our protection? It was exciting.

Gina led Viv out of the kitchen with the cuffs leaving me dumbfounded and horny. I knew exactly what I wanted to happen. Viv's backside was basically nude, as her G-string was embedded in her butt cleavage. Her spine gently undulated with each sway of her ass, which was highlighted by cute sacral dimples either side of her sharply defined tailbone. It was like she was sculpted from fluidic marble, her deep lines shadowed by candlelight. Only the luckiest few guys in the world ever see a sight so magnificent. But the moment also felt bigger, like something was about to happen that could change things. Both girls looked over their shoulders to make sure I was following.

Gina led Viv to the sofa and gently pushed her down into it. She let go of Viv's chain, then came to me. She lifted her palm up to my chest, all five fingers spread apart and flexed, and backed me down into our upholstered armchair.

Bending close to my lips Gina said, "Wait until she calls for you."

"And watch as much as you want, Brother," Viv added.

Next, Gina walked behind the sofa and reached over Viv's body, pulling her arms up and over her head by the cuffs. Viv's breasts tightened and the soft skin of her chest and arm pits stretched. Gina looped the chain around two carved swirls decorating the sofa's top wooden crest rail. When Viv tugged, the chain worked into the grooves. Not escape proof, but secure. Gina leaned over again and nipped Viv's earlobe with her teeth. She winced. It was momentary, but her gasp was genuine.

Gina, still in her panties, walked around the sofa making a candle flicker. Then, without looking back at me, my sister kneeled on the floor between Viv's legs. She removed her G-string, took a deep breath, and began slowly licking her pussy. I was dumbfounded. All I could see was the back of my sister's blonde pixie-cut head. Viv let out a content moan as Gina worked quietly. Then Viv began to tell a story.

"My brother was my hero," she began. "And he kinda broke my heart once. A long time ago."

I wasn't sure how to respond, especially about the "kinda" part. I offered my sympathy, but she waved it off with a flick of her cuffed hand over her head.

Her voice was soft as she spoke, and she often paused with "ah, right there" or a simple, breathy "yah." If she got too close, she would bump Gina's head away for a moment or two by closing her thighs.

Viv's brother was a fire fighter while she was growing up but got severely burned and moved back home to heal. Viv's eyes glowed as she told us how much she loved him back then. Changing his bandages, bringing him meals, sitting and listening to his stories. Even later, when he became addicted to painkillers and couldn't hold a job, she didn't see it. To her he was a paragon, a guy that would run toward a fire while everyone else ran away.

"One night, the summer before I left for college, he was chilling on the sofa -- oh god, yah right there, Gina - without a shirt. His scars looked so painful. I gave him a massage. Ran my hands over his scars. He shivered. Then he pinned me against the cushions."

Viv paused a long time with her eyes closed, keeping the explicit details of the encounter to herself. Gina's head still bobbed between her legs.

"I heard him grunt. When I opened my eyes, I didn't recognize him. I saw an animal, a selfish, greedy fucker. No emotion or eye contact. No love for his little sister. He didn't ask, he just took. Then, after he had his fun, he left to get high."

For the first time she looked away from me, blinking, maybe embarrassed. She moaned, stretched her body against the chain, and went over the edge gently to a soft orgasm.

"Ahhh... yah. So... I've hated my brother ever since. But not because of what he did to me that night. Phew, thanks, Gina."

My sister backed away from Viv's pussy. She shifted to one hip, leaning on Viv's leg, caressing her calf and leaving her vagina exposed to me for the first time. Viv's hot juice glinted in the dim light. So did Gina's lips.

"My brother changed," Viv sighed, letting her orgasm fade. "He stopped talking to me. Like I no longer existed. And that I can't forgive. I miss him so much. Get it?"

I nodded. But how could I, as a man, have anything but superficial understanding? I could conceive of how that event may have left her empty, never finding completion in sex with anyone. Or maybe she had secretly fantasized about sex with her brother and idol, only to have it play out far differently than how she had imagined when he pushed. As I sat there trying to get it, I realized the truth was likely more complex than I could ever know. It made Viv human, putting her role as a recruiter for orgies into some kind of explainable perspective. I felt a vulnerable closeness to her, me sitting there with a hard on inside my boxers, my sister in panties at her feet. It was the type of confession around which lifelong bonds can form. I felt privileged, in a way, that she had chosen my sister and I to help her play out her catharsis and reclaim her power, if that's what this was all about. I was ready to listen, and help.

"But you two," Viv continued, looking down at Gina and across to me, "are perfect."

"Perfect?" I asked.

"I watched you fuck at the party. Yet you did everything except actually fuck. It was pathetic," she laughed. "But so damn sweet I wanted to cry. The way you two figured out how to get off with each other without crossing that final line."

Then, only to me, "I wish my brother had looked at me the way you looked at your sister."

Gina glowed, glancing toward me, then smiling up at Viv.

"You two are closer than most steps, but you didn't share a childhood like true siblings. Your bond. Your love. It's a Westermarck anomaly. It's fragile, like a wayward ship about to break upon the rocks of taboo."

Gina glanced at me, caught my eye, then looked away. I avoided her eyes, too. I knew Viv was watching us not look at each other. She let the silence build a cozy sheath around us, three bodies exposed, our minds processing motivations and desires.

"It's time, Brother," Viv said.

I got up and walked to the sofa with a full tent pole and wide fly gap. Gina placed her dainty hands on either side of my boxers. She closed her eyes, took a deep breath, and lowered them to my ankles. My erection sprung loose in the process, bouncing just an inch from my sister's face. Viv's eyes were huge, though all she could see was the back of Gina's head. When Gina opened her eyes, they focused on my dick. Both Gina and Viv licked their lips, in perfect unison. Gina was hauntingly beautiful, her black eye makeup making her look like a spirit in the candlelight. Tonight's theme was well planned. Her body, clothed in shadow and panty, looked foreign. She was thinking about sucking my dick. I was sure. I felt her fighting to keep control. But I knew my sister. Gina would not cross that line. I was going to fuck Viv tonight.

Then like a bolt of lightning something in my mind switched. Oh my god! How I wanted to feel Gina's lips. With almost imperceptible slowness I pushed my dick closer to her face. Even that small motion brought her eyes together more, nearly cross-eyed now, as she gazed at my penis. Out of the corner of my eye, I saw Viv tighten against her restraints. Without a sound she shook her head. Then, as if in answer, Gina shook her head, too, and backed away.

She gave me a lopsided smile, "Sorry, Tommy." Then she moved to the sofa to join Viv.

My sister sat next to Viv, against the sofa arm, and lifted her wrists off the carved rail. She helped Viv lay across her lap with her chained wrists dangling over the edge. Less restraint now; the cuffs were more a reminder to "help her go through with this."

Fuck! My senses were so alive. The dim ambiance. Dinner's lingering aroma. Viv's shallow breathing and the sofa groaning as we moved into new positions. Her breasts looked more squeezable. The bare mound of her pussy looked more freckle-specked and juicy, the scent from her pits muskier and intoxicating.

Viv spread her legs for me. These two girls were killing me, tag teaming without really doing anything yet, forcing me to bounce from one temptation to the next. I always wondered what it would be like to be in a threesome for real, not just watching porn. I began to think my poor mind was going to snap. Reality was much different than what I had imagined. Better. Mind blowing. But not quite a real threesome. Or maybe more?

I moved between Viv's legs. She made sure to stretch her hands back, letting them hang over the sofa arm even though there was no actual restraint. The way she looked at me, with a touch of anxiety and a nod, I felt the weight of the moment. As my legs rubbed along her inner thighs I could feel her heat, and something I didn't expect. Tension. Viv was trembling. How many men and women fucked her before? Was this time different for her? I had not even done anything yet, but from the way her eyes rolled back I sensed she didn't want any foreplay from me. I leaned my six-foot frame forward over the small woman and tried to keep my weight off of her and Gina as much as possible. It was so dark I had to notch my dick head between her folds by touch. She was so slippery! My sister's saliva. That thought made my breath hitch. I started to push my penis against Viv's hole but paused when the slightest puff of air escaped her lips.

"No. Please." It was whisper-quiet, so faint I might have imagined it.

My sexual experience was only slightly more than zero, so feeling her slick warmth on the head of my penis was a novelty. I wanted more. Right now! Every fiber of my being, every instinct from millions of years of evolution, told me to push inside. It would be so easy to convince myself I had not heard the "No" in what she said. I heard "Please" last! In fact, the way she had been pestering me all evening, the slaps and insults, lit a fire in me that was akin to animalistic anger. There she was, chained and submissive, a gift offered to me, resting on my sister's lap. And she fucking said, "No?" I could barely hold back. I barely was. Then she played the next part.

"Just the tip," she said, a little louder this time, eyes still closed, as if she were talking to someone else.

"Okay." I didn't even recognize my own voice. It was gruff and impatient.

I pushed my cock head into Viv's vagina until I felt resistance. I felt her pussy muscle contract against my head, pushing me out. I didn't force deeper, but instead I flexed my own dick muscle making it throb forward. Viv relaxed and let my tip in deeper, then she squeezed me out again. We played that squeeze game several times, back and forth, me sliding in through her Gina-lubricated entrance, and her pushing my head out each time. She let me sink a little deeper with each iteration.

"Fuuuck yes, Brother," Viv moaned.

Gina placed her hand on my back, stroking along my trapezius muscles. "Deeper?" she asked.

Viv nodded.

I leaned taller over her, now supporting my weight on the arm of the sofa, my own arms bracketing Viv at her pits. At last, my cock slid deep, all the way. I pushed until I felt resistance inside and Viv grunted. At first, I was disappointed that she wasn't deep enough for me to thrust in up to my balls. My previous sexual experience had been the same, and by now I was wondering if the length of my dick was above average. But then Viv squeezed again and began rocking her hips under me. Her fuck-style was more experienced and nuanced than I had felt before, as each contraction seemed to hit the ridge of my dick head just right. Holy crap! She felt so good I let her control the rhythm, and all I needed to do was my own part, small but growing thrusts to match her rhythm. Gina reached for Viv's clit and slid one finger over her nub.

It was enough to push Viv over the edge. Her orgasm, if that's what it was, hit small and quick with gentle shudders and white showing through her partially open eyes. I felt my own climax building in response.

"Not yet," she begged, helpless in any way to keep me from cumming.

But I tried not to. I pushed deep into her and felt the force of her back wall flatten my head while I pinned her hips hard against the sofa cushion and my sister's lap. I kept her hips from grinding, lowered my forehead to hers, and tried to think about something else. The first thing that came to my mind was the image of her hand slapping me across the face. It had not been enough to hurt, or even make me truly angry, but I focused on it. I heard her whimper in pain underneath me, and I felt an urge to start fucking her mercilessly.

"Tommy," Gina said. When I didn't answer she snapped. "Tommy! You're too heavy."

The moment had passed. With great effort I had managed to stop my orgasm before it happened without ruining it. But damn! I was so ready to nut inside Viv. Both Viv and Gina exhaled in relief when I finally eased up. I glanced at my sister who gave me an, "I'm okay," look.

"You two are making this perfect," Viv said, watching us.

Gina whispered, "But I'm getting crushed here." We all laughed.

I let my penis slide out of Viv's love hole and we frantically rearranged. Viv didn't move much but she let Gina slide in behind her against the sofa arm, so her weight was on the sofa cushion instead of my sister's lap. In the process, Gina slipped off her panties and kicked both legs wide behind Viv, one ankle hanging over the sofa back and her other foot on the floor. Actually, I was amazed at my sister's flexibility to pull off that maneuver. Viv lifted her arm back to bring the cuffs behind Gina's head, kissing her tenderly as she craned her neck backwards. The two melded together, my sister's cute blonde face and Viv's ginger head both looking at me. Gina's arms wrapped around Viv from behind.

I got up to position myself between Viv's legs again and a long strand of precum dripped from my penis and fell across both girl's thighs. Gina didn't touch it but looked down at it like a prize. In the frantic commotion my dick had drooped a little, but a few quick strokes brought me back to full hardness.

As I reentered Viv's pussy, she let her head fall back onto Gina's shoulder, her eyes fluttering closed once again. She had no instructions for me now, and it would not have made any difference. I started with long, hard strokes inside her pussy, as deep as possible without making her wince. Then I pulled out nearly all the way, repeating and building speed. My precum was slick and watery like Viv's own pussy juice, and it was so sloppy I had a difficult time getting the friction I needed. I found myself pounding harder and harder, chasing the feeling I'd had only moments ago. Viv's legs came up higher as both she and Gina slid lower under me.

I was conscious of my much larger body mass this time and was supporting more of my weight on my arms. Viv was cocooned in the hollow between me and Gina. The more I pounded the more I needed it.

Delicious moans floated to my ears, growing louder and higher pitched. I looked up and realized it was not Viv. Rather, it was Gina responding to my every thrust, my force propelling Viv's sculptured ass backward into Gina's open crotch. My sister was wiggling and straining to work her clitoris against Viv's coccyx, while the older girl kept her legs raised high to sharpen the edge of her tailbone for Gina's benefit. Before that moment I didn't even know such a position was possible. But fuck! It was the sexiest thing I had ever experienced. The bones of Viv's lower spine were rippling against my sister's clit with each thrust. Gina's moans and whimpers drove me on as if I was fucking her instead. My little peabrain suddenly realized this had been their plan all along. A witchy Halloween trick. As the slimy juice between Viv's legs started to congeal and give me more friction, I brought up my memory of her slaps and taunts to give me more power. Gina's moans were becoming more powerful, too. Was it possible she could cum like this? We looked each other, straight in the eyes. Hers were full of love, and lust, with intensity I had never seen. Gina was focused, in a kind of trance, trying to feel it, fingernails biting into Viv's body to hold her hips where she needed them. She was trying to ride my thrusts, as they transferred through Viv. Was my little sister getting off for me? Instinctively, I knew that was exactly what was happening, and the taboo of that thought spurred me on, too. My sweat dripped onto Viv's bare breasts. I was fucking her so hard, trying to make my own sister cum. Like the orgy, here was yet another fucked up sex-but-not-sex invention. I looked in Gina's eyes as I worked their bodies and saw the girl I loved. My precious little sister, sweaty and nasty for me.

Viv gasped and I glanced down at her. Her eyes were wide open now, watching me look at Gina, her mouth opening as she panted close to her climax.

Viv moaned, staring straight at me, and began a huge bucking orgasm. Her voice suddenly filled the room leaving no doubt she was a screamer. Gina, too, moaned louder and burst into her own blissful climax, clutching across Viv's breasts and stomach trying to maintain vital contact between her pussy and Viv's backside while the redhead writhed. With two beautiful woman cumming below me it took only another moment for my sperm to start shooting into Viv's pussy. With tight skin-to-skin contact, Viv and Gina were as close to merging as two women can be. For one moment my brain successfully transposed them, giving me the sensation that I was fucking Gina instead. For a split second it gave me all the forbidden thrills and emotional confusion that came along with incest.

Viv let out a huge breathy gasp, "Brother!"

Gina did the same. "Oh, Tommy! Oh my god, Tommy." She continued squirming her pussy against Viv's ass bone, grinding out her orgasm, which hadn't fully blossomed yet. "Don't stop, Tommy!"

I tried to keep going for her, but the odd three-way position just couldn't handle Gina's insistence as Viv's orgasm subsided. The surrogate girl between us was calming down, and Gina was desperately cumming on her backside as she relaxed. As the moment passed, I took more of my weight off the girls. Viv gave my cock one last squeeze and let me relax inside her. Gina didn't know what to do with her legs. She could not wrap them around both Viv and me well enough to lock her ankles, but her orgasm was not quite finished, and she was trying desperately to get more. A few moments later her legs stopped flailing around, and she calmed along with me and Viv into post-sex afterglow. Eventually, my cock shrank and slithered out of Viv's cave. I kicked my legs out and onto the floor so I could sit back on the sofa, both girls' legs tangling around me. Viv's pussy gape closed slowly, glistening in the candlelight, and one bead of my cum oozed out to form a glimmering, pearly orb.

"Thank you! Thank you!" Viv panted. "I saw it in your eyes. The way you looked at Gina just now. I saw it! You made me believe it was for me."

I was glad she enjoyed it and gave her an understanding smile. She lay back on my sister's chest and closed her eyes, smiling to herself. Then I looked at Gina, who was glowing with contentment.

"Did you cum?" I asked.

My sister nodded. "Oh my god, I was so close to losing it, Tommy. But yah, mwahahah ah haha. Fuck yah!" It was the nerdiest, fucked-out, cute laugh I had ever heard.

We sat quietly for a few minutes. Viv finally stirred and opened her eyes. She reached down, fingered a cumdrop out of herself, and popped it into her mouth. She relished the taste for a moment but didn't swallow, instead turning her head back to Gina. After thinking about it for a second Viv swallowed and gave Gina a kiss on the cheek.

"Your turn, Sister," Viv said.

Gina looked at me then reached around Viv, fingering out another drop of my cum. Holding it close to her face she gave a sniff and watched it roll over her knuckle.

"Go on," Viv encouraged. "It's the only white thing we eat tonight."

Gina smirked at me playfully and sucked the drop off her finger.

"So how does your brother's cum taste?"

My sister swirled it around in her mouth. "Kind of like bleach."

Viv smiled wistfully, "I remember that, too."

Gina swallowed it. Fuck.

Then Viv reached behind her back. Gina giggled when she felt Viv's fingers slide inside. Viv pulled her hand out and showed me a huge glob of glistening white grool from my sister's pussy hole. Part of it broke off and dripped down into the darkness between our bodies. She held the rest toward me.

"Complete the fertility ritual, Brother."

"Wait. Fertility?" I asked, crinkling my nose at her gleaming finger.

Viv nudged her knee against my back. "Relax! My god, bro. You really are just the perfect nerd, aren't you?" They both looked at me expectantly.

Then Viv rolled her eyes. "I'm not fertile, okay? And this is just a fun Halloween treat to end the holiday. Pretend it's a melty marshmallow."

I hesitated, then leaned toward her offering. "Well," I said. "Anything for my sisters."

Part 3: My sister and I finally fuck... on Viv's lap

Please rate, heart, and comment.