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97.85% Taboo Incest sex stories / Chapter 4058: SISTER SEXBOT

Chapitre 4058: SISTER SEXBOT

t was the evening of Alexis's nineteenth birthday. She was my sister, and she was a year younger than me. Even though she was my sister, I had no problem admitting she was damn fine. She had perfect D cup tits. I knew from snooping in her bras one day. Might've been a little creepy, but what she doesn't know won't hurt her. However, like most girls in 2050, she seldom wore a bra, which made her nipples show through her shirt anytime it was even a little cold. Some girls would even wear translucent shirts so that they might as well be topless. Sadly, my sister did not participate in that fashion trend.

It was the weekend, so I came back from my out of state college to celebrate with my family. Dad had grilled up a great dinner while Mom baked the cake we were eating. It was a chocolate cake with white icing, with 'Happy Birthday Alexis' written in blue icing. Mom made it from scratch, which was something seldom done these days. My parents were a bit old fashioned and liked to make everything by hand. It was probably why our family didn't have a robot butler, even though they were in almost every other household. Having moved off to college, I had come to miss their cooking.

We gathered around our wall sized TV and finished off the cake Mom had made. It was an action flick starring Keanu Reeves. Apparently he has been a famous actor for a long time, back when our grandparents were kids.

"So, like, does this guy ever age?" Dad joked.

"He actually looks a little younger in this than in the Matrix," Mom said.

I began to harden as I watched Alexis eat her cake. Her tongue licking the icing off the fork. Leaving traces of saliva on it. It shined with her saliva, which was perfect for my plan. She ate her last bite and stood up to put her dirty dishes in the sink.

"Oh no, sis," I said. "I've got this."

"Nah, it's alright," she said. Shit, I need that fork.. "I need to get going anyway."

"Big party tonight for our 19 year old?" Dad asked.

Alexis nodded proudly. The drinking age was lowered to 19 around 2035, so we all knew that she would be going out tonight. I don't even fully remember my 19th birthday.

"Try not to get too drunk." Dad said.

Alexis chuckled. "Don't worry, Dad."

"I'm not sweetheart. I know you'll make the right choices."

Alexis handed me the dishes so she could hug and kiss Mom and Dad. Just what I wanted! I took a second to look at her amazing ass before carrying away her dirty dishes.

When I got to the kitchen, it was time to look at the dishes I had. On the cup, there was no clear distinction where her lips had been, so I couldn't get a sample there. The plate was obviously no good. But that fork was perfect. It was still shining slightly, exactly I had fantasized about on the couch. Alexis came through the kitchen as I loaded the plate and cup into the dishwasher.

"Thanks for coming over bro." Alexis's breasts pushed into my back as she hugged me from behind. Her warm lips pecked me on the cheek just before she released me from the embrace. It was nothing more than a sibling embrace. There was no way something was going to happen sexually between us. That's why my plan was necessary.

"I was glad to see you." Innuendo aside, I did enjoy seeing my sister again. I am more than just my dick. "Have fun tonight."

"Oh, I will." Alexis gave me a wink before heading to the garage. All cars were automated, so there was no danger of her driving drunk. It was a bizarre thought that such a thing was a real danger for people in my grandparents' generation. So many young deaths.

I took the fork to the bathroom and got as much of Alexis's saliva as I could with a cotton swab. I put it in a baggie and grinned as I stuffed it into my pocket. The plan was completely set and ready to go first thing in the morning. For a second, I worried I was gonna have to cancel my appointment.

***

I ate breakfast with Mom and Dad. Alexis was passed out in her car in the garage.

"She came in at 2 in the morning," Mom said.

"She gonna feel it when she wakes up," I laughed.

Dad chuckled. "You certainly did."

"Yep, I did." That was a terrible day, and I could feel my head pounding just from thinking about it. "She'll recover."

I finished eating and left. Alexis was indeed passed out in her car, which was parked next to mine. Her shirt looked bunched up, and the top couple buttons were undone on her shirt. One of her breasts was almost freed, and I saw a hint of her pink areola. Temptation was to reach in the car and give her shirt a slight tug. I rubbed the cotton swab in my pocket and told myself there was no need to violate her when I had something far better.

My heart was pounding as I got in my car and typed in the address. Here I go! I was really doing this!

***

"Hello, and welcome to Lusty Robotics!" Beautiful women greeted me at the door as I entered the building. They were so lifelike, I had no idea if they were real or not. A similarly beautiful women greeted me at the receptionist desk and I told her I had an appointment.

"Ah yes, David. Right this way." Her high heels clicked on the floor as she guided me to an office where a man sat at his computer. "Your 9 o' clock is here."

The man stood up and shook my hand. "Nice to meet you, David."

I returned the greeting. He was so professional, that it was almost surreal to believe what he was about to give me. He wore a business suit with a solid gold watch. He wore glasses, which were a fashion choice since sight defects had been cured decades ago. The woman had left and closed the door behind her.

"So, I gotta ask, is she real?"

"She is. The ones by the doors aren't though." The man typed at his computer. "I see you've prepaid and submitted the personality test as well as how you noted that you want her personality to differ from reality. Now we need either a DNA sample or a picture. For full realism, a DNA sample is recommended."

I gladly reached into my pocket and handed him the cotton swab that contained my sister's spit.

"Perfect." He pulled a latex glove onto his hand before unzipping my baggie, and putting the swab into his machine. A hologram appeared that showed a double helix, and then a moment later, my breath caught in my throat. A 3D representation of my sister was in front of me, and she was butt naked. Her full breasts were tipped with beautiful pink nipples, and her pussy was fully bald. As was her head, which made her look unusual. The only hair was her eyebrows. "DNA doesn't show hair length. How long is Alexis's hair?"

I took a second to breathe and act natural. "About shoulder length."

He pushed a button, and brown hair grew out of Alexis's scalp. "And hair on her bikini area?"

I hesitated, and the guy chuckled a second to lighten the mood. "Haven't seen her naked before?"

I shook my head.

"Well, we can make it whatever you want. It can stay bald as it is, or—"

The man pushed a button and Alexis's pussy grew a full unkempt bush. "And anything in between."

"How about a little stubble."

The man nodded and pushed a button. Alexis's bush shrank to only a few stray hairs. Just the way I like women. Of course, I had no idea how the real Alexis groomed her pussy, but this reality was as good as any other.

The man typed into his computer. "And you opted not to see the process?"

"It keeps the illusion." Not many knew the process, and I certainly didn't know the intricacies, but the gist was that the flesh is grafted onto a robotic skeleton. It was a process that I had no desire to see, it would be better if she simply walked through the door as my sister.

"Right, well, she will be here in just a minute."

My palms became slippery with sweat as I waited in the room with this man. I grew nervous. What if I couldn't go through with this? She was after all, a simulation of my sister. As much as I've masturbated to her, could I really fuck someone who is designed to look and act exactly like her?

As my mind raced, Alexis walked into the room. She moved incredibly lifelike, just like the robots by the door. "Oh, David, there you are."

"Alexis?"

She nodded. "The guy said that I could find you in this office. Ready to go, bro?"

"Yeah, lets get out of here."

"Go have fun with your sister," the man said. "Just have her back within three days."

"Of course." Owning a custom robot like this would cost tens of thousands, which was far beyond my savings. I had to settle for renting. Besides, keeping a permanent replica of my sister around would cause problems sooner or later.

"We're coming back here?" Alexis asked. "Why?"

I tried to think of a bullshit explanation to tell her. "Doctor appointment. They need to see you again."

"Oh, OK." One of the few constants in their programming was that they would never question why they had to return. I could have told her it was to get donuts and she would've agreed.

Alexis took my hand in hers as we walked to my car. Her synthetic flesh felt so real, it was just like my sister's hand, except the real Alexis wouldn't hold my hand like this. Not that I was complaining.

When we got to the car, I typed the address to my dorm and Alexis blasted the AC. Cool air hardened her nips almost instantly, and they poked through the thin fabric of her shirt.

"Ever been to a college dorm?"

Alexis shook her head. "What's it like?"

"Oh, it's great, you'll see." I tuned the radio to find a good song to listen to.

"I bet it is." Alexis smiled. "Big bro all on his own."

"You'll have one next year." It just felt natural to treat her like my real sister, since she acted so much like her. I couldn't believe how accurate the personality test was. The only variation that I requested was of course that she be willing to have sex with me.

"And I can't wait." She leaned toward the vent some more to get more cold air. Since this wasn't my real sister, I made no attempt to hide my staring. "Enjoying the view?"

"What?"

"I know you're looking at my tits, David." Hearing Alexis's voice say those words was such a turn on. "I know you've lusted after me for a long time."

"Really?"

"You really think I didn't notice?" She leaned forward, almost close enough to kiss me. "Or any of the other times that you didn't think I was looking. Or those times I would come out of the shower wearing only a towel. Just a cloth to separate your hungry eyes from my flesh."

Hearing Alexis talk like this, I was speechless.

"David, I'm your sister," Alexis said with a scolding voice. Then she smirked. "Or maybe that was part of the turn on for you."

We locked eyes and slowly leaned together for a kiss. Her mouth was warm and wet, just as it should be. Her lips were as soft as I remember from her real life sisterly pecks on the cheek. Except, this wasn't how a sister kisses a brother at all.

Alexis guided my hand between her legs. I pulled at the waistband of her leggings and I touched the stubbly hairs that I saw on the hologram. My fingers found her clitoris and she was already moist. She didn't break our kiss even as she moaned into my mouth. Hips bucked slightly against my hand.

"Oh, David." She broke the kiss for a second, but she was still close enough that I felt her hot breath as she spoke. "That feels so good."

I slowly climbed over my sister as we made out. Alexis pulled the lever on her seat so that it leaned back all way. She was fully lying down, and we were out of easy view of most traffic passing by. Anybody trying to look could still see, but neither of us really cared at this point if people looked. Alexis's hands went up as I pulled her shirt over her head. Perky, full tits with pink nipples were fully in my view, and I held her soft flesh. I really had my sister's tits in my hands! And they were every bit as incredible as I imagined.

I bent down to take her right nipple into my mouth. She moaned slightly and ran her fingers through my hair while I suckled. My tongue ran around her areola and my lips pulled at her eraser tip nipple. A short squeal encouraged me, and I moved to suck on her other tit. "That's right, David, just like that."

A bump in the road forced my face even more into her soft breasts. She helped me out of my clothes, and I pulled down her leggings so that we were both naked in this autopiloted vehicle. I took a moment to admire my sister's gorgeous naked body, which was what I had wanted to see for years. She spread her legs and rubbed her wet pussy. Her eyes were locked onto my hard cock, and she had a horny grin on her face that I will never forget.

"Damn, my brother has an amazing cock."

"Wait till it's inside you." I wasn't a virgin, but I had never fucked a girl bareback before. Too risky. However, sexbots can't get pregnant, and new synthetic flesh after every user meant no diseases. Feeling warm juices and every muscle of her inner organ with no barrier was like losing my virginity a second time. The fact that it was my sister's pussy made it even better.

"That's right, David!" Alexis moaned. "Fuck your sister!"

I slowly let my cock slide in and out of her as I listened to her moans. We held and kissed as I gently made love to her. "Harder."

I sped up my thrusts.

"Harder!"

Alexis's tits bounced around as I slammed my dick into her. Moans became screams and she wrapped her arms and legs around me. Her pussy pulsated around my cock and I felt my first spurt into my sister. There was no holding back this orgasm, and I let myself come inside my sweet sister.

"That was amazing David."

"Plenty more where that came from," I said.

"Oh, I certainly hope so," Alexis said. "I'm gonna need more of my brother's cock."

slowly woke up to the sensation of warm wetness on my cock. A tongue licked up and down my already rock hard dick. Fingers gently massaged my balls and I let out a long breath as I ran my fingers through my sister's hair.

"Fuck, that feels so good." I opened my eyes and saw my sister's face bobbing up and down on my hard dick. Alexis's pretty lips closed on it tight and she sucked me up and down, with her hand following close behind. "Yes, Alexis, just like that!"

Alexis moved her head and hand faster. Cool air touched it when she took it out of her mouth to lick the sides. She took each of my balls and sucked them into her mouth and I let out a loud moan. Her tongue flicked my dick hole and she gave me a naughty smile. It felt even warmer when she took my back into her mouth. Her soft fingers massaged my balls that were still wet from her spit. Precum dribbled from my cock, and her mouth moved slightly as she swallowed it. "Oh, sis, I'm about to cum."

Alexis sucked harder and faster. Moans came from my involuntarily as I let myself burst. She kept sucking down every last drop. I lied there panting from exhaustion as my sister cleaned my dick with her mouth. Her tits swayed as her topless body crawled up and she showed me the white pool of cum on her tongue before swallowing it. "Good morning, David."

I ran my hand through my sister's hair. After taking a moment to look, I realized that she wasn't just topless, but she was completely naked. Just as she was when we slept. Now, normally I don't actually sleep naked, but we were already naked from fucking before we drifted off. Neither of us bothered to put on clothes, and my sister fell asleep right in my arms as we spooned. The cramped space of the dorm sized bed was quickly forgotten with my dick nuzzled in my sister's warm ass.

Well, she wasn't exactly my sister. It was a robot with very realistic, but still synthetic, flesh and bodily fluids crafted from a scan of my sister's DNA. She looked and even behaved exactly as my sister would behave, with the only exception being that she happily fucks me. That, and in the back of her synthetic mind, she knows she will have to return to the company. She's only a rental; I'm not made of money.

"Good morning, Alexis." I embraced her naked body and squeezed her firm ass. A naughty grin curved her lips and she gave me a soft peck on the cheek. She crawled on all fours on top of me and paused for a second to let her tits hover in front of my face. I leaned forward to suck on them and she kept crawling until her pussy was right in front of me.

"Your turn, big brother."

I inhaled her feminine scent and I was already hard again. Since this was based on Alexis's DNA, this was what the real thing smelled like too. This was my sister's pussy, and I knew what it smelled like. My arousal intensified and I took her sweet pussy onto my tongue. She tasted exactly how a girl should taste. Exactly how my sister tastes.

Smooth thighs clenched around my face as I lapped her sex. I nibbled at the thigh tissue around her lower lips and got closer to taste her again. Soft moans sounded above me. When I looked up, I couldn't see her face, but only her large, perky tits. Nipples had already gotten fully erect.

My tongue found Alexis's clit and she moaned louder. Soft fingers gripped my head and pushed me further into her crotch. Her moans got louder and I licked and sucked harder. She bucked her hips slightly and her hole body quivered.

"Oh yes, David!" Alexis rode her orgasm on my face. Muscles twitched and flexed around my head. Breasts bounced when she let herself collapse to my side. "Oh, my big brother knows how to eat some pussy!"

"Damn right," I said, wiping my mouth.

"Let's shower and get some food." Alexis's tits went up and down as she panted to get her breath back.

"Food?" I asked.

"Yeah," Alexis said. "All this sex is making me hungry."

Maybe I missed a part of the manual. The robots shouldn't suggest something that would harm them, but maybe her roleplay went too far. As much I really didn't want to use this feature, I had to be absolutely certain. "Order 3257: Break roleplay."

Alexis suddenly stopped panting and her eyes looked straight at me. Except her eyes were a cold, mechanical stare. All trace of happiness or any emotion left her face. "Roleplay broken."

"Can you eat food?"

"Affirmative, I can consume biological materials." Her voice was monotone. This feature made it too obvious that this was a machine wearing Alexis's flesh. It creeped me out. "Without this feature, the body fluids that you have put in me would not be able to be broken down. Food is not a requirement, but personality programming will make me crave it. This feature can be disabled if you choose, but may break immersion. It is on by default."

"Would feeding you be a waste?"

"Negative. My personality programming will derive pleasure from food consumed. My internal processes will break down any inputted biological material for auxiliary power."

I nodded, and was more than ready to get my sister back. "Order 3258: Resume roleplay."

Alexis blinked and looked up at me. Her eyes already seemed to have a soul behind them again. "Well, we going to get something to eat or not?"

"Sure." I grinned. "But you said something about a shower?"

Alexis grabbed my hard dick and led me to my bathroom. She entered the shower and turned the water on. She shivered as goosebumps formed all over her body.

"It's a little cold when you first get in," I said.

"I know." Alexis winked and tweaked her nipples that had gotten rock hard in the cold water. "Guys love it when I do this."

"I can see why." I stepped in after giving it time to warm up. Cold penises are nowhere near as sexy as cold nipples. We soaped each other up. Alexis's wet flesh felt great underneath my hands. Nipples stayed hard as I soaped up her tits. She made noises as I rubbed her pussy and ass crack. She returned the favor when she soaped up my cock, which quickly turned into a handjob with soap as lube.

"Oh, Sis," I groaned. "Please turn around!"

Alexis kissed me on the lips before turning around. Her back arched so that her pussy was facing me. The spray of the water washed the soap off my cock and I guided myself into her warmth. We both groaned as I slid inside her orifice. She was still wet from when I ate her out, so I slid in easily. There was no need to warm her up.

Water splashed off our bodies as I slammed into her pussy. Moans echoed off the tile walls of the shower. Alexis could barely hold onto the ceramic as her wet hands slipped from my force. "Oh yes, brother!"

Alexis's wet hair clumped together on her back, and I grabbed it to pull back. Her head went back with it and she screamed out in pleasure. Her lips barely made my name in her excitement, and we orgasmed together in the shower. I held her close as I filled her pussy and our panting slowed together. My cock shined with Alexis's fluid when I pulled out. Our combined fluids dripped down her leg and made a white spiral before being sucked down the drain.

I was a little nervous taking my sister to the campus cafeteria. A few of my friends knew her, one even dated her, but none of them showed up. Alexis also knew better than to show public displays of affection. "As far as anybody knows," Alexis said, "I am just your sister in town visiting."

"Right," I said.

After we ate our breakfast at the cafeteria without any real event, Alexis asked to go on a walk around campus. "I'm coming here next year, so I'd like a look at the place."

That seemed reasonable enough, so we walked together around campus. There was the historical statue of the university founder from over a hundred years ago near the admin building. She saw a fountain and asked for a coin. As luck would have it, I did in fact have a penny, and she tossed it in. For a second, I pondered if wishing well magic worked for robots. We looked at some other buildings. Animals floated in formaldehyde in the biology building, along with a few skulls and several skeletons. We were one of the few schools to have a skeleton of the species discovered on Mars four years ago. We spent several long minutes in front of that skeleton and its unique physiology. It looked nothing like alien depictions of the past. Of course, now many science fiction movies try to imagine what this thing looked like when it had flesh.

Sculptures and paintings decorated the art building. Of course, there was the thing that about college art that any high school senior would notice first. "So, they really do allow nudes in college?"

I nodded.

"Know any of these girls?" Alexis smirked.

I nodded again, letting my eyes go to a redhead. We hung out on a regular basis, and I remember the shock I had at seeing her nude picture while roaming the halls one day. Her tits were bigger than I thought, and the artistic photograph showed her bush that confirmed that she was indeed a natural redhead. Naturally, I undress her in my mind anytime we hang out.

Nobody was in the drama theater, but she was amazed at the size of it. "It's so much bigger than the one at my high school."

"Plays are better in university too," I said. Then I shrugged. "Unfortunately, you also have to pay for them now."

"Bummer," Alexis said. "But at least you're not forced to watch them."

Stock Market states scrolled across a screen in the business building. It was all stuff I had seen everyday walking around campus, but for Alexis, who had never been on a college campus before, it was all the first time. Seeing it through her eyes made it all new again.

"Alexis?" asked a male voice. We both turned around and my heart leapt into my throat.

"Josh?" Alexis and I asked in unison. He was my sister's ex. This wasn't good.

"You didn't say you were coming over," Josh said. His eyes went up and down Alexis's body.

"I'm just in town visiting David."

"Could've told me you were coming over," Josh said. "I thought we were cool now."

"Oh, sorry." Alexis ran up to him and they embraced before kissing. Jealousy shot through me seeing her in his arms, but I dared not to say anything.

"You two got back together?" I asked.

"She didn't tell you?" Josh broke the embrace, but kept his arm around my sister. "Yeah, we got back together on her birthday."

"Like, really together?" I asked. "Because I saw her when she got back, and she was pretty well wasted."

"Bro, I wasn't that drunk." Alexis playfully punched my arm. "Well, not at first anyway."

Josh chuckled. "Yeah, she was gone pretty damn fast, but we did have time to make up right before she got wasted."

"In fact, he was the one that helped me get home."

"Yep, I helped her to her car and typed in the address to send her home," Josh said. "I thought about coming with you, but well, there was still a keg to finish off."

If my heart was beating fast before, now it was racing. This was bad. If he figures out that the Alexis in his arms isn't real, he'll figure out she was ordered by me. Not only would I be the weirdo who made a sexbot of his sister, but I'd be the weirdo who made a sexbot of my friend's girlfriend. Then the real Alexis would find out. What a disaster!

Alexis patted Josh on his muscular chest. "Hey sweetie, I'll catch back up with you."

Josh frowned. "But why?"

Alexis smiled. "We text or call everyday. I don't hang out with my brother often enough, but I promise I'll see you later."

"Like tonight?"

Alexis nodded with a wink. "Like tonight."

"Great, I'll text you," Josh said.

My heart jumped, but Alexis had it covered. "My phone isn't working right now, I'll just come over to your place when I'm ready."

"Order 3257: Break roleplay." We were back in my dorm after travelling around town and around campus almost all day.

"Roleplay broken."

"How did you know the details of Josh's relationship with you?"

"Social media. In addition to the personality test you submitted, information was also extracted from the social media accounts associated with the person whom I am posing as."

"So, you're constantly connected to the internet?"

"Negative. A sample of information was extracted just before my flesh was grafted onto my bones."

I swore to myself. "Order 3258: Resume roleplay."

Alexis blinked and looked up at me. "It's almost time for my date with Josh."

"What are we gonna do?!"

"I can cancel if you want me to, David." Alexis looked at me with sincere love. "I am with you now."

"Right," I said. That was the programming talking, since she had to be loyal. Still, it was nice to hear that from her. "But if you blow this off, he might get suspicious."

"Well, I wouldn't want him to get suspicious."

"Me neither!" I looked Alexis's body up and down, stripping her in my mind. If she went to Josh, then it would be difficult to get a moment alone with her again. "But I want you."

"Oh David." Alexis got closer to me and gave me a kiss. "I want you too."

Alexis planted another kiss further down my neck, and then on my collarbone. Her hand drifted to my cock and she squeezed it through my pants. Finger unzipped the fly and freed my hard dick. She placed a soft kiss on the head of my penis. "Maybe we can just stay in tonight?"

"I'm ok with that."

Alexis licked the hole at the tip of my cock. Her lips slid down slowly as she took as much of my cock as she could into her mouth and sucked hard. I gasped in pleasure at her aggressive blowjob.

"Yes!" I didn't last long, and I finished in Alexis's mouth. She grinned and showed me the pool of my own semen before swallowing.

After that was settled, we watched a movie together inside my dorm. We wore far less clothing that we normally would for family movie night, I add. After that, we played a couple card games. This escalated to strip poker where we lost the rest of our clothes, and then did short sexual favors instead of stripping. I sucked on her titties one round. She licked my balls the next round. I rubbed her wet clit the round after that.

It was getting late, I was rock hard, and Alexis was completely wet. So, we went to bed just like last night. She lied in the bed facing away from me, and I cuddled close behind her. My cock rubbed her ass, and my fingers played with her nipple. Our bodies did their own thing, and instead of my cock touching her ass cheeks, it was deep inside her warm, wet pussy.

Alexis let out a low moan and rocked her hips over my dick. Her walls squeezed me as her ass pressed into my pelvis. I let one of my hands drift and rub her clit while the other continued to tweak her nipple. The bed rocked from our subtle movement. We weren't fucking like in the shower. This was making sweet love to my little sister.

Tension built up inside me, and I felt Alexis's walls start to pulse, so I let go. Wave after wave of pleasure filled my sister with my seed. Her whole body tensed up and she let out a slow moan. Walls pulsated around my cock as her pussy milked me for every drop.

"Good night, sis."

"Good night, bro."

The next morning I didn't wake up to a blowjob, since I woke up before Alexis. The thought of waking her in the same kind way she woke me up yesterday occurred to me, and I started to lean back so I could turn her on her back. Her breast moved in the slight movement. Before I could get between her legs though, my phone beeped.

Who could be messaging me this early? I ignored it and let my mouth get closer to Alexis's pussy. The phone beeped again. I glanced over to see who the message was from, and I froze. Alexis. The real one. Shit.

Alexis, my sister, was still asleep when I woke up next to her. She was completely naked with her bare ass just above the covers. Yesterday she woke me up with a blow job, and I thought I'd return the favor this morning. I turned her over onto her back and her breasts moved in the slight movement. Before I could get between her legs though, my phone beeped.

Who could be messaging me this early? I ignored it and let my mouth get closer to Alexis's pussy. I breathed in her feminine aroma. The phone beeped again. I glanced over to see who the message was from, and I froze. Alexis. The real one. Shit. She didn't usually message me, and yesterday we had come across her boyfriend, Josh. He must've said something.

I drank in one last gaze at the robot version of my sister's pussy. Thanks to the DNA replication, this is exactly what the real one looked, felt, and tasted like. I needed that to calm my nerves before I actually read the real Alexis's message.

"Josh thinks I'm on campus for some reason. Thinks I'm visiting you. He's upset I blew him off last night. Know anything about this?"

Fuck. Exactly what I feared. I typed, "Why would I know anything about it?"

The longest seconds in the world passed as the phone showed the dots to indicate her typing. Every profanity in the world was muttered under my breath, and the robotic Alexis began to stir in her sleep. "Good morning, honey."

"Good morning, sis." I couldn't keep the nervousness out of my voice.

"What's wrong, David?" she asked.

The next message from the real one popped up. "Because Josh said I was with you."

Another message popped up. "Don't play dumb, David."

"I'm not playing dumb," I hastily typed. I turned to my sister, who was sitting up in the bed. I was too frantic to enjoy her tits. "Nothing's wrong."

"Don't lie to me." Alexis scooted closer so that her pointed nipples touched my back. It made me feel a little better. That is, until the phone rang. Video call too. Shit.

I stood up and faced Alexis, so that the face cam wouldn't point to her. "I gotta take this call."

"Sure, bro."

My quaking thumb touched the receive call button. "H-hello."

"You're awfully nervous for someone with nothing to hide, David." Alexis looked my up and down from the screen. She wouldn't be able to see any lower than my chest and stomach. "Are you naked?"

I shrugged. "Yeah, I'm naked. Sometimes I sleep naked, especially in my dorm."

"That voice sounds familiar," robot Alexis said. I wanted to crawl out of my skin.

"Or when you're having sex."

My blood pressure spiked, but then I calmed myself by telling myself she knew nothing. "Maybe. What of it?"

"Who with?" Alexis asked. "That voice does sound familiar."

"None of your business!" My heart pounded. For a brief second I thought about hanging up, but that would be as good as a confession, and I would have to face my sister again. As well as anybody else my sister rats me out to.

"So, why can't you tell me why Josh thinks I'm on campus hanging out with you?"

I helplessly stuttered. "I guess the girl kinda looks like you?"

"She looks like me?" Robotic Alexis asked. "I want to see."

"Yes, David," the real Alexis said plainly. "I want to see too."

Robotic Alexis was already out of bed and approaching to reach for the phone.

"Well, she's naked right now, so I don't think it would be—"

Robotic Alexis reached for the phone and I moved it without thinking. At the perfect angle to let the real Alexis see her naked, replicated body. "She does look like me," she said plainly.

I froze. Alexis moved closer to the screen to peer at her real self. "Hey, she does look like me!"

"Down to the mole on my left hip." There was little emotion in the real Alexis's voice.

"Alexis, I can explain!"

"Oh neat, her name is Alexis too!"

"Well, she has my exact appearance and name," she said. "It seems pretty obvious what happened."

"Alexis, it's not like that."

"I doubt that very much."

"Please, can we talk about this?"

Alexis's eyes lit up. "I would love to."

I breathed a sigh of relief. "I'll take her back immediately."

"When is she due back?"

"Tomorrow."

"No sense in wasting a day you already paid for," Alexis said. "I wanted to see both of you anyway."

I looked down away from the phone. I looked at my feet, which had gone pale from fear like the rest of my body.

"I'm on the way right now. I called a cab."

"How long?" I asked.

Alexis asked somebody offscreen, and they said about half an hour. She repeated the ETA to me, and I just nodded. "And David?"

"Yeah?"

"Don't sweat too much. I'm not as upset about this as you probably think."

"See you in half an hour." I hung up the phone and set it down.

"She'll be here in half an hour?" Robotic Alexis asked.

"Yeah."

She grabbed my now limp cock, which did grow slightly from the attention. "So we have some time to ourselves?"

I shook my head. "Not in the mood right now."

Alexis frowned. "Is it because of that girl on the phone that looks like me?"

"Something like that." Tingling sensations begin to fill my cock, but my mind simply wasn't there. My secret was out, and my life was just over.

***

Robotic Alexis and I had gotten dressed by the time the real Alexis arrived. Robotic Alexis greeted her with enthusiasm. "We really do look alike."

Alexis smirked. "We do. What's your favorite food?"

"Pizza with pineapple!"

"Mine too."

"Wow. Favorite actor?"

"Keanu Reeves."

"Mine too. He's so hot." She turned to me and started to speak. "But not as hot as—wait, David does she know?"

"Do I know that you two are brother and sister?" Alexis asked and nodded to herself. "Yes, I know. I also know you are fucking each other."

"We're not fucking each other," the robot lied.

"You were naked when I video-called."

The robot looked at me and shrugged. "Well, I'm just a uh—"

"Am I really this bad at lying?"

"Sometimes." Even in this situation, I could find the humor in it.

Alexis furrowed her brow. "Alright look, I know you guys are fucking, I know that's your brother, and I'm totally cool with it."

"You are?" The robot asked.

"You are?" I repeated.

Alexis's eyes went between us both. "Yes, I am."

A huge weight was lifted from me. "Wait, really?"

"Let me show you something on my phone." Alexis pulled out her phone and went through her pictures gallery. She tapped her thumb on a picture and it took up the screen. It was a naked picture of me! Right there in my sister's hand-my real sister-was a picture of me posing. In the picture, my cock was shining and wet, and my hair was messy as if I'd just had sex. She swiped left and my doppelganger was facing away from the camera, just as naked. "That version was hesitant to take pictures. Did you take pictures of her, yet?"

I was speechless. The robot spoke up for us. "I was going to right before my doctor appointment tomorrow. Why do you have a naked picture of David? And why do we look so much alike?"

"We look alike because we're sisters, but you haven't heard of me," Alexis said. "And this isn't quite David, it's David's brother that he hasn't heard of."

The robot nodded. "So you're cool with us fucking because you're fucking your brother too?"

"Exactly."

"Alexis," I said. "Order 3257: Break Roleplay."

The robot's face went completely blank and stared ahead. Now I could have a real conversation.

"Good idea," Alexis said. "I heard if their personality program finds out about their artificial nature, it typically isn't too good for them. That's why she bought the sister story, she knows that it's bullshit, but her programming forces her to play along to protect herself from finding out she's a machine."

"You made a robot of me?"

Alexis bit her lip and grinned. "You were so sexy, and I had no idea you felt the way about me."

My cock grew in my pants as I thought about my real sister lusting after me all this time. "When?"

"Over the summer," Alexis said. "You were home from college, and I was 18. I saw the commercials and saved up for both a robot you, and a hotel so that we could have a couple days to ourselves. I knew you jacked off a lot, so finding a DNA sample was easy. What'd you use for me?"

"The fork from your plate." I paused. "You really thought I was sexy?"

"Oh yes, you were even sexier than I thought. I was amazed when I first saw your cock in action." Alexis let out a soft moan as she played her memory. "I was even more amazed when I felt you inside me. I think I came when you did as I felt your hot seed inside me, even if it was artificial seed."

My cock was rock hard and I reached out to embrace her. "We can find out just how realistic that machine was."

Alexis's cute lips curved in a smile before kissing me. "Why did you think I came over?"

"To chew me out." I shrugged before kissing down her neck. An idea entered my head and I stopped. "Wait, what about Josh?"

"We're pretty open. I made something up about why I didn't see him last night. Best we not tell him about this though. I can't be remembered as a brother fucker."

"Right." I started to pull up Alexis's top to expose her smooth belly when another idea entered my head. "Order 3258: Resume roleplay."

Robotic Alexis blinked and looked at us embracing each other. She stood and pulled down Alexis's pants and panties in one motion to expose her bald pussy. "I love this family."

I finished taking off Alexis's top and she kissed her doppelganger. Her nipples stiffened as the two beautiful girls made out. A feminine hand traveled down her smooth curves to rub her delicate folds. She breathed harder and reached a hand up her copy's shirt to massage her breast. I took the initiative and helped the copy out of her clothes as well as taking off my own so that we were all naked.

The girls walked each other to my bed and one laid down with her legs spread. Short hairs on the pussy gave her away as the copy. I walked up behind my real sister and whispered, "Want to see how my real cock feels?"

She nodded. "I want to see how my pussy tastes."

Alexis bent over to eat out her copy. The girl moaned and pinched her own nipples. I took a moment to appreciate the sight of my sister eating herself out before approaching the real one. The tip of my cock rubbed against my sister's pussy and slowly pushed in. She moaned into the other girl's snatch. That familiar warmth wrapped around my cock. Every part of her pussy was just the same as the simulated one, but this was special. This was real.

"Oh, your cock feels so good!" Alexis lifted her head up from the girl for just a moment before being shoved back down to eat more pussy. My thrusts started slow and I reached around to rub her pussy. I gave her cream colored ass hard spanks before really fucking her. Both girls moaned loudly. Tits jiggled from the force, and I leaned to take one in my mouth. Moans turned to shrieks and she closed her legs around my sister's head. Her pussy got tighter, and I wasn't going to last much longer.

"Where can I cum?"

"Inside me!"

"You sure?"

"Yes!" Alexis let out a loud unmuffled moan as her pussy squeezed me tighter. "I need it NOW!"

Alexis's pussy milked my cock and I moaned as I released waves of cum inside her. She squealed at my warm fluid and I watched the other girl writhe in pleasure from Alexis's tongue.

All of us sat on the bed, panting. "That was...incredible."

"Your cock felt just as I remembered it," Alexis said. "But even better."

"My sister can really eat some pussy."

"So, not as upset as I thought." I laughed.

Alexis's tits bounced slightly as she giggled and gave me a peck on the lips. I tasted her own pussy on her lips. "No, not as upset as you thought."


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