Change of Minds

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A familiy of three and a strange device.
14.4k words
4.81
23.9k
57

Part 1 of the 2 part series

Updated 10/13/2023
Created 08/18/2023
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Editor's note: this fictional work contains scenes of fictional incest or fictional incest content.

*****

Sam stood in the Hallway, nervously fumbling with his phone. "It should be here any minute now," he thought. He had received the message that the device he ordered yesterday would be delivered around this time by a courier.

Just as he checked the message again, the doorbell rang. Expectantly he opened the door. A middle-aged man stood there, holding a small box in his hands. "Delivery," he said, holding a phone towards Sam, "Sign here!". Sam signed. The man took the phone back, handed him the box, and left.

Sam closed the door with a shaking hand and looked at the box. It was small. Smaller than he expected. Nervously he opened the Box, just to find, nestled between packing material, a smaller black box.

"What you got there?" The voice of his mother startled him. She walked towards him, in her best business attire, pulling a suitcase behind her.

"Uhh... nothing. Just something new for my computer," he lied. But Elise wasn't really listening. She was busy checking her clothes in the mirror.

"Sam, dear. It is summer break. For once, try something else instead of sitting in front of your computer all day." she said with a stern but caring look. "Maybe go out, meet new people, maybe you even find a girlfriend." She winked.

"Yea, that's not really my thing, you know that. Anyway, where are you going?" He asked back.

"Got an urgent job from the office. I need to fly to L.A. and won't be back for a couple of days." She explained.

"But you will miss my birthday tomorrow," Sam responded.

"I know, honey. But this contract is really important. I will call you, I promise. And when I'm back, we will make up for it. Alright?" She looked at her watch, "I really need to get going. Jen already knows. You know where the money for groceries is. Your cake is in the Fridge. Love you." With a kiss on his cheek, she was out the door and gone.

Sam looked after her for a couple of seconds before realizing he was still holding the box. He sprinted up the stairs into his room and discarded the packing material and the outer box.

The small shiny black box was sitting on his table. It looked well made but was probably some cheap china box. He removed the top to reveal a small metallic device.

It looked like a normal pen. Not completely, instead of a tip, there was a small hole, and the clicky end was a red push button.

Under the plastic mold that held the pen, he found the manual.

The first step was to register himself as the owner. Followed by detailed usage instructions. He read the instructions three times to make sure he remembered everything.

One part at the bottom stood out: "Targets will not realize that they have been given a command, and their mind will come up with a plausible solution on their own."

"Alright, time to test this thing out," he said before heading out to find his sister.

***

Jennifer was sitting in the living room, watching tv while tapping on her phone. "Why does she even turn the tv on when she is always on her phone?" Sam thought.

He pointed the device at the back of her head and pressed the button. As the instruction said, the device made a short beep, but nothing else happened."That should have done it," he thought.

He walked toward the couch and sat next to his Sister. "Whatcha doing, Jen?"

"What do you want?" she said without looking up from her phone.

"I just wanted to talk to you. Mom flew out for a job, and I got bored," he answered.

"You know, you are annoying, right?" she said but still looked at her phone.

"You know, you are boring, right?" he retorted.

"Just fuck off," she said.

"Ah yes, the Jen that I love," he thought, "what would I do without her caring attitude? So let's see, I should try the instruction mode first and start with something simple. If that works, I can move on to something more satisfying."

Taking a deep breath, he said, "Instruction mode."

Jennnifer's eyes glazed over, and her face became expressionless.

"You will answer the next 10 questions I ask with the truth, and you will answer directly and not distract. Execute Instruction."

She turned back to normal and blinked a few times before turning back to her phone like nothing had happened.

"First, two control questions," he thought and asked, "How old are you?"

"19," she said, without looking up from her phone.

"What are you wearing?"

"A white crop top and denim hotpants," she said, unbothered.

He looked at her. The answer was correct, she was wearing a tight crop top that highlighted her medium-sized breasts, and it stopped just before her belly button, leaving her flat stomach and her pierced navel bare. Hot pants that hugged her hips and ass, showing off her curves.

"And underneath?"

"Black underwire bra and black panties," she responded.

"What is your bra size?" he asked.

"My bra size is 32C," she answered, her fingers continuing to tap on her phone.

"When was the last time you masturbated?"

"Last night," she said without batting an eye.

"Alright, five questions left. Better make them count," he thought, keeping track with his fingers.

"When was the last time you had sex?"

"I don't remember exactly, but it was around 1 year ago."

"Wow, that's longer than I expected," he thought, "four left."

"Do you like sex?" he asked.

"It's alright. Masturbating is better."

"Why is that?"

"I never feel satisfied after sex, I always have to finish myself off."

"So her last boyfriend did not know or care how to satisfy her." he thought.

"Would you have sex with me?"

"No, we are siblings."

"What are your sexual fantasies?"

"I like the idea of fucking something really thick or long, filling me out completely."

"Fuck, that's hot," he thought, feeling his dick bulge in his pants.

Forgetting that this was his last question, he continued, "Why haven't you bought something for that?"

Jennifer blinked, then looked at him. "Bought what? What are you talking about?"

"Nothing," he said, realizing his mistake.

"You are such an idiot," she said, rolling her eyes.

Sam thought about his next steps. He could make her into a cock hungry sex slave, willing to do anything for him. Or, and that was more to his liking, he could make subtle changes to her and get her to want to have sex with him. He decided on the subtle changes. If it didn't work out, he could always make her his whore later.

"Command mode on." he said.

Jennifer stared into the distance, her face again expressionless.

"You will masturbate at least 3 times a day. You will think about getting fucked by me while you masturbate." Sam stated.

He thought about some other commands that would be useful. "You will get aroused when you are near me."

"That should do it. Now let's see how this turns out." he thought.

"Command mode off," he said.

Jen's expression returned to normal, and she focused back on her phone.

"I'm getting a Coke. Do you want something?" he asked.

"No thanks," she answered.

"Okay," he said and walked toward the kitchen. As he grabbed a Coke from the fridge, he heard Jen walk up the stairs.

"That was quick," he thought. He had expected it to take at least a bit longer for her to go masturbate.

He took a sip from his can and walked towards the stairs. He quietly climbed up and stood in front of Jennifer's room. The door was closed, but he could hear soft moans from inside. He pressed his ear against the door and listened. The moans became louder and more frequent. He could hear the bed creaking.

"Oh god, yes! Fuck me! Fuck me harder!" She moaned.

Sam was shocked. He knew that she would be masturbating, but he had no idea she would be so vocal about it.

"Oh yes, fuck my tight pussy! Fuck me with your big cock! Deeper!" she moaned.

He started getting hard. His sister sounded amazing as she was pleasuring herself. He listened to her moans, trying to guess what she was doing.

On the other side of the door, Jen was in her bed, naked, legs spread wide, and her right hand was inside her dripping wet pussy. Her left hand was squeezing her breast, pinching her nipple.

For some strange reason, her mind keeps drifting to her brother, Sam. She imagined his hard cock sliding inside her wet pussy. The thought of it made her even wetter. She imagined his hands grabbing her breasts and his lips kissing her neck.

She rammed her hand deeper into her pussy, trying to satisfy her craving. She needed more. She was now knuckles deep inside her. She could feel her pussy spreading, could feel the resistance of her own body. She spread her finger out, filling her most intimate place. It wasn't enough. She needed more. She needed to be filled completely. She should have bought the big dildo she saw online some time ago, but she was too ashamed of her own fantasies.

Her thoughts drifted to Sam again. She imagined his cock inside her. Filling her. Stretching her. Her other hand moved down to her clit. She started rubbing it furiously. She imagined Sam's hands on her tits, his lips on her nipples. She imagined his cock slamming into her. She imagined him cumming inside her.

"Yes! Fill me! Impale me!" She screamed as she came. She kept rubbing her clit, prolonging her orgasm.

When she finally came down from her high, she realized what she just did. "Fuck me, I had not come this hard in forever. But why did I think of Sam?" She wondered.

Sam, in front of her door, couldn't hold back anymore. He had massaged his raging boner through his pants. As he heard his sister finishing, he nearly came in his boxers. With enormous willpower, he held back and swiftly retreated into the bathroom. There he quickly freed his throbbing cock, grabbed it with both hands, and started jerking off furiously. A few strokes were enough to send him over the edge. He came hard, shooting rope after rope of hot cum into the shower and over his hand.

After he calmed down, he realized that he had not been this horny in a long time. "God, that was good," he thought. But now he needed to clean himself up. He hopped into the shower.

Jen, on the other hand, was still lying in her bed, breathing heavily. She had never experienced an orgasm that intense before. Her whole body was tingling. She felt exhausted but satisfied. She got up to clean herself.

Jen walked into the bathroom just a bit after Sam started the shower. Her mind was still focused on her intense orgasm, and she did not realize that someone was in there.

"Aahhh!" she screamed when she saw Sam."What the fuck are you doing here? Why didn't you lock the door?" she yelled at him.

Sam, equally surprised, nearly slipped. "I thought I had," he responded, trying to grip something to steady himself.

Since the shower wasn't on for long, the glass door was still clear. Jen couldn't help but notice his body. He had no visible muscles and looked scrawny, but his dick was impressive. It hung between his legs, swinging slightly as he tried to regain his balance. At least 15cm, she noticed, and it was not even hard. She couldn't imagine how big it must be when it was hard.

"Well, I need to shower too, so get done quickly," she said, feeling herself getting wet again. Before turning around and leaving. Her mind was racing. She had never seen a dick that big, and she couldn't stop thinking about how it would feel inside her. She had imagined his dick to be big, but this was beyond her expectations.

"Fuck," she thought, "why am I thinking about my brother's dick?"

Sam quickly showered, cleaning himself and the residue of his orgasm from the walls. After he was done, he dried himself and wrapped the towel around his waist. He opened the door and nearly ran into Jen. She was waiting in front of the door, wearing only her underwear.

"Ah, shit, sorry," He said as he steadied himself again. Immediately noticing her lack of proper clothes.

"Are you done? I really need a shower," she said.

"Yea, go ahead," he answered, stepping aside to let her pass.

She walked past him, and he couldn't help but stare at her ass. It looked amazing in her tight panties, and her toned legs made him want to touch them.

Jen could feel his eyes on her, and his gaze made her shiver. She quickly entered the bathroom and closed the door behind her.

"What the hell is wrong with me?" she thought, "I'm not interested in Sam. Why do I feel this way?"

Sam was thrilled. He had noticed her gaze earlier, and he knew that she had seen his dick. And she seemed to like what she saw.

"This is going better than expected," he thought, "this thing is amazing."

He walked towards his room and closed the door behind him.

***

Sometime later, Sam headed to the kitchen for a small afternoon snack. As he passed Jennifer's room, he heard her moaning again. He listened for a second and could hear the bed creaking and her moaning his name.

"Oh god, yes! Fuck me, Sam!" She moaned.

"Holy shit, she is masturbating again," he thought, "and she is moaning my name. This is crazy."

He continued to listen, getting hard again. He could hear her moans getting louder and faster.

She screamed, "Yes! Spread me! Shove your thick cock into my tight pussy!"

Her voice became a garbled mix of moans and screams. Then with a final moan, she came. He could hear her breathing heavily.

He quickly adjusted his pants to hide his boner before continuing to the kitchen.

With a Snack in one hand, he sat on the couch and turned the TV on. Just as he started to eat, Jen came down the stairs. She was wearing a crop top and short shorts.

"Hey, Jen," he said.

"Hi," she responded, sitting down next to him.

"Sorry about earlier," he said, "I must have forgotten to lock the door."

"Yes, you should have," she said, her mind drifting back to his massive dick. She could feel herself getting aroused again and bit her lip.

"What is wrong with me?" she thought, "why do I keep thinking about his dick? Why am I getting wet again?"

"On an unrelated note, could you, maybe, keep it down a bit?" Sam asked, a knowing look on his face.

"Keep what down?" she asked, feigning ignorance.

"You know, the moaning and screaming," he responded.

"I wasn't... Ohhhh," she realized, "you were listening."

"Well, it's rather hard not to listen, you know," he said, "you were kinda loud."

"Fuck you," she responded, trying to defend herself.

"No, seriously, you sounded like you were having a good time. What were you thinking about?" he asked, grinning.

"None of your business," she said, feeling herself getting even wetter.

"Since I could hear my name, I would say it is my business," he responded.

Jen's eyes went wide. She knew she was cornered. There was no way she could deny it. She felt herself getting red.

"I can explain," she said, "it's just..."

"I'm listening," Sam prodded.

"It's just that, well, you are my brother, and I shouldn't think about you that way. But ever since I saw you in the shower, I can't stop thinking about your big cock." she said, her voice getting more silent with every word. She looked at her hands, wishing this conversation would be over.

Sam was delighted. His plan was working perfectly. He just needed to push a bit more.

"So, you are saying that you want to have sex with me?" he asked.

"I... I don't know," she said, "I mean, you are my brother, and I shouldn't think about you that way. But seeing your big cock in the shower made me so wet, and I couldn't help but imagine how it would feel inside me."

"Jen, we are both adults. If you want to have sex, we can have sex. It doesn't have to be anything more," he said, "I'm not going to tell anyone if you don't."

"I don't know," she said, looking at him.

"And the whole sibling situation, don't you think it's hot? The forbidden fruit?" he asked.

"Maybe," she said, biting her lip.

"Why don't we just try it? If you don't like it, we can stop," he said.

"I... I need to think about it," she said.

Sam nodded, "I'll be in my room. Talk to me if you have made a decision."

With that, he got up and headed upstairs.

Jen sat on the couch for a few minutes, thinking about what just happened. She was incredibly horny, and her thoughts kept drifting to Sam's massive cock. Sam's words lingered in her mind "The forbidden fruit." The thought of having sex with her brother was exciting. She had never considered it before, but now, the idea seemed very appealing. She wanted his dick. She was just not sure about the body it belonged to.

"Fuck it," she thought, "I'll just give it a try. If I don't like it, I can always stop."

She stood up and walked towards Sam's room. As she reached his door, she took a deep breath and knocked.

"Come in," Sam said from inside.

She opened the door and stepped inside. Sam was sitting at his desk, staring at his computer screen.

"Hey," she said, closing the door behind her.

"Hey," he responded, turning around.

"I've been thinking about what you said earlier, and I think I want to try it," she said, looking at him, "That is if you also want to. I don't want to force this on you."

"Of course, I want to. Have you seen yourself? I don't care that you are my sister. You are just so hot and sexy." he said.

"Really?" she asked, blushing.

"Yes, really," he said, standing up, "Do you want to do it now?"

"Yes," she said with a shaking voice, feeling the heat inside her. She was ready, ready to be taken NOW. "Skip the foreplay. Just fuck me."

Sam looked surprised for a second before shrugging, "Who am I to say no to that?" With a swift motion, he removed his shirt, followed by his pants and boxers. Jen was out of her clothes a second later. Both looked at each other for a couple of seconds.

"Damn, she has a nice body. Those perfect breasts and that amazing ass." Sam thought, noticing the wetness between her legs.

"Oh my god, his cock is even bigger than I imagined. That has to be at least 20 cm. I can't wait to feel it inside me." Jen thought, feeling her pussy throb.

Jen tumbled backward onto his bed, spreading her legs. Her pussy was dripping wet, and her nipples were rock hard. She spread her lips with both hands, giving Sam a clear view of her pink insides. Her juices flowed down her ass. She was basically leaking.

"Fuck me! Fuck me now!" she pleaded, "I need your big cock inside me!"

Sam positioned himself between her legs, his tip teasingly touching her clit. Jen shuddered as his thick cock touched her.

With a determined thrust, he rammed his entire length into her tight pussy. She screamed in pleasure as he stretched her walls. It felt amazing. She had never felt this full before. Her pussy was stretched to its limits. His length, his girth, it all felt incredible.

He started to thrust in and out of her. His cock slid in and out of her tight hole. She moaned with every thrust. Her pussy was so wet that his cock made lewd sounds every time he pushed into her.

"Oh... my... god! This... feels... incredible!" she moaned between thrusts.

"You're so fucking tight," Sam grunted.

"Harder! Fuck me harder!" she screamed.

He grabbed her hips and started to pound her with all his strength. She screamed in ecstasy as his massive cock slammed into her. Her pussy was stretched to its limits, and she could feel every inch of his thick shaft. Her walls were squeezing him tightly, and her juices were overflowing. He was hitting all the right spots, and she was in heaven. She could feel her orgasm approaching.

"I'm going to cum!" she screamed.

Sam continued to pound her with all his might. Her pussy was like a vice grip around his cock, and she was soaking wet. Her juices coated his cock and her thighs. She was close. So close. Just a bit more. She needed more. She wanted more. She needed to feel his cock deeper inside her.