Chapter Text
Once more, Stephen and Kara fight over something silly. She storms off to her room, and he stays in the living room watching TV. He was average in build and height, with brown hair and eyes like their father. She has red hair and green eyes like her mother, a petite girl with pale skin covered in freckles. To him, she was just a stupid child, but that was about to change. He was still entertained by the TV when Kara left her room towards their mother's bedroom. Kara was wearing just her underwear. She wasn't ashamed of walking like this in front of her brother. He looked at her and realized that her body was developing. She had curves, a round butt, and even her boobs had grown. He suddenly felt an urge and a desire for his little sister. He felt ashamed of having those thoughts and tried to dismiss them. The days go by and those feelings just get stronger. One day, they were both watching TV when she leaned and rested her head on his shoulder. He put his arm around her and caressed her. He moved his hand up and down her body, then reached for her butt and grabbed it lightly. She didn't react immediately. He then caressed her thighs. She looked at him, blushing.
"Your hands are so warm!" Kara said.
He then removed his hand from her thigh.
"Sorry!" Stephen replied.
Then she took his hand and put it back on her thigh, resting her own hand on his.
"Y-you can continue." She said, looking away.
Like him, Kara was also trying to suppress inappropriate thoughts. She was beginning to feel attracted to boys, and lately, Stephen was being extra gentle, loving and caring towards her. She was confused about those feelings. Was she in love with her own brother? She couldn't discuss that with anyone. They didn't talk about or act on it. Later that month, their mother worked all day, so they were alone at home after school until their mother arrived from work. Stephen was looking for Kara and found her in their mother's room. She was going through their mother's drawer. Stephen then sees her picking up something and putting it in her pocket. When she turned around to flee the crime scene, she was surprised to see Stephen. She was stuttering, trying to come up with an excuse. He spoke first.
"What are you doing, sis?"
He asked, with a smirk, if that was the opportunity he was waiting for.
"Nothing..." she replied, blushing.
He got closer to her.
"Nothing? Really? To me it seemed like you were stealing from mom."
She looked away and took from her pocket a few money notes. He didn't take it.
"I can keep this as a secret."
She looked up, her eyes shining.
"Would you?"
He nodded, then looked directly into her eyes.
"But you must do something for me, and it will also be your punishment."
She looked at him, scared.
"W-what do you mean by punishment?"
He looked up and down her body.
"I want to play with your butt."
He proposed like it was a common thing to ask a sibling. He wasn't a virgin. He had already fucked with an older woman, a story for another day, and he had done anal sex with the woman on the occasion. It was something he was dying to do again. He was watching a lot of porn that involved anal. On the other hand, Kara had no idea of what he was talking about.
"Play? With my butt?!"
She was more confused than scared.
"No! No way!"
She was worried. Then she tries to get away, but he gets in her way.
"I won’t force you to do anything. I will just tell mom that you were stealing from her."
"I will tell her that you were trying to do weird things with me!"
He smirked and put his hands on her waist.
"She won’t believe you. You stole from her before. She’ll just think you’re making things up to get away."
She looks away and ponders her options. At the end, she submits.
"Fine!"
Stephen holds her arms and takes her to his bedroom. Upon getting there, he tells her to lie on her stomach. She followed his instructions a bit confused. She knew what sex was. She even knew what oral sex was. One time, a friend showed her a porn video, and aside from mainstream media, that was the most graphic depiction of sex Kara ever saw. She had no clue what "play with her butt" meant; he was being purposely vague. She knew boys liked butts. Since her body began to develop, she noticed the boys at school looking at her butt and boobs. In her mind, playing with her butt would mean grabbing it, squeezing it, maybe a few slaps. That was already super weird for her; it was her brother! But at the same time, she was curious about being touched by a boy. She couldn't deny that, deep down, she had some feelings for Stephen. He positioned himself behind her and pulled her shorts down. Immediately, she gasped and tried to stop him. He pinned her down.
"Stop! I-I don’t want to do this anymore!" She pleaded.
He kept holding her down.
"How do you expect me to play with your butt with your shorts on? But if you want, I can stop. And wait for mom to arrive to tell her what you did."
Kara stopped struggling. Stephen smirked and removed her shorts; she wasn’t wearing panties underneath. His cock was already hard from seeing her exposed like that. Kara was sinking her face into the bed, feeling ashamed and nervous. He spreads her asscheeks and she gasps. He took a good look at her pussy and her tight asshole. He couldn’t help but to bite his lips. Kara didn’t try to stop him, but tried to talk to him.
"Please... Don’t look at my..."
She couldn’t finish her sentence; she was too ashamed. Stephen got even more aroused. He then begins to push his middle finger up her tight asshole. She squirmed and whined. He used his other hand to keep her in place. Kara was trying to assimilate what was happening. Her brother was sticking a finger up her ass. It was painful and humiliating. "Weird" didn’t even begin to describe it. She was also angry; angry at him for abusing her, his little sister, and angry at herself for wanting more. He kept pushing his finger deeper into her asshole, her hole tightly clenched around his finger. Her whining turned into moans when he began to move his finger back and forth inside of her.
"Stephen!" She moaned.
"What?" He asked, still fingering her.
"This... This is wrong…" She said, looking back at him.
He kept fingering her, getting her hole a bit loose with every thrust.
"But it feels good." He replies.
"It hurts!" She whines.
He pulls his finger out, not out of pity, but because he had other plans. She buries her head on the bed and says something. He couldn’t understand it.
"What?" He asked.
"Don’t…" She muttered.
"Don’t what?"
"Don’t stop…" Then she buries her face on her bed, trying to avoid his looks.
He smirked and pushed two fingers up her asshole. She lifted her head, screaming.
"Stephen!" She screamed.
He kept fingering her.
"That’s too much!" She protested.
"You want me to stop?" He asked, teasing her. She moaned in reply.
Thousands of thoughts were going through Kara’s mind. She knew it was painful and wrong, but at the same time she was feeling pleasure. She was enjoying being used and abused. She didn’t want to admit it, but she wanted him to go faster. She feels his fingers sliding out of her asshole. Without looking at him, she asks:
"Did... did you finish?"
"I haven’t even begun!"
She felt Stephen positioning himself over her, then something poking her asshole. She thinks: "No, it can’t be his thing!" Then she feels pain like she never felt before when his cock breached her asshole and was making its way inside her tight asshole, stretching her hole painfully on the way in. She thought that his fingers were hurting her, but it was nothing compared to the pain caused by his dick. Her eyes immediately watered, tears flowing down her cheek as he kept pushing it deeper. She was whimpering, squirming, and crying, but that didn’t stop him. On the contrary, the more resistance she offered, the more he enjoyed; the more she clenched her hole, the more pleasure for him. He began to thrust his dick into her tight hole, her moans and screams filling the room. He was too aroused and horny to care about her well being. His lust for fucking such a pretty girl had taken over his mind. The fact that the girl was his sister just made it better for him. Kara was just lying there, moaning and crying. She stopped trying to get away. She accepted her fate. The more pain she felt, the more pleasure overwhelmed her. She couldn’t even think straight. She only wanted him to keep fucking her. Then she feels his cock getting thicker inside of her, and he cums. He moans and even shakes a bit, releasing his load inside of her asshole. She feels his warm semen filling her hole. Then he stops moving, the moans cease, the only sound is their panting. He slides his cock out of her asshole, and after a farting noise, begins to leak his cum. She felt even more used and violated, but at the same time, she was also angry that he stopped. He lies by her side and spoons her, their bodies covered in sweat. They stay there for a few minutes; they’re both tired and confused about their feelings; then they fall asleep. When Stephen wakes up, he finds himself alone, and Kara is gone. Her bedroom door was closed. He tries to open it, but it is locked. He stays in his room, thinking about everything that has happened, afraid that he has hurt or traumatized her. When their mom comes home, Kara leaves her room and acts like nothing has happened. Stephen does the same. Even if she was acting like everything was normal, Kara was avoiding talking to Stephen or even looking at him. He decided to wait and talk to her tomorrow. Later, he went to sleep, only to be woken late at night by someone opening his door. It was Kara.
"Stephen?" She asked, keeping her voice down.
"Kara? What are you doing?" He asked, sitting on the bed.
She gets inside the room and closes the door behind her. She sits on the bed next to him.
"Can we talk?" She asked, looking at him. He could barely see her in the darkness.
"O-okay." He replies, sitting closer to her.
When his eyes adjust to the darkness, he sees that she is sitting on the bed looking down.
"What we did… Was it wrong?" She asks, still looking down.
"Well… Some people consider it wrong. You didn’t like it?"
Then she looks at him.
"It is not it! I like it! It just hurt a lot, but… I enjoyed it… Stephen?"
"Yes, Kara?"
"I-I… I think I like you."
He smiles and puts his arm around her.
"I like you too, as my sister and as a girlfriend."
She couldn’t hide her smile.
"Girlfriend?" She asks, smiling.
"Yeah, what do you want to be called? Casual incest partner?"
"Don’t call me that!" She pouts, clinging to him.
"But you said it was wrong."
He smirks.
"The fact that it is wrong makes it better."
"Bro! You’re so naughty!"
They smiled and sat on the bed facing each other. He turned on the lamp on his bedside table that lit up the dim room, but it wasn't bright enough to break the mood. She looks at him.
"I want to see your thing." She asks, blushing.
"My cock?"
She nods.
"Say it!"
She blushes deeper.
"Don't make me say it!"
"Say it!"
"I want to see your cock, happy?"
"Very happy! And I want to see your boobs."
To his surprise, she didn't hesitate to take her shirt off and expose her small but perky boobs. Then, before he knew it, she had taken off her shorts and panties too, exposing a nicely shaved pussy. He was amazed by her beauty. Then, as they undress too, they start to admire each other's bodies. She reaches out and grabs his dick hesitantly. She strokes it slowly. She looks up at him with pleading eyes.
"I'm doing it right?" She asks, waiting for validation.
His cock throbs on her hand.
"You're doing great, sis."
She smiles and strokes his cock faster. While she does that, he grabs her breasts and cups them. His sister stops stroking.
"I want to put it in my mouth." She says, blushing.
His cock hardens even more, and he gently pushes her head down towards his thick and hard cock. He moans, feeling her licking his tip. The tip of his cock is throbbing now, and she licks him with excitement. She takes it deeper into her mouth, taking as much as she can handle. He pushes her head down till she gags, testing her limits. It's as if she is sucking on an ice cream cone, savoring every bit of it. It is getting harder for him to hold back. Her head is bobbing up and down as fast as she can. As he starts to moan, she looks up at him, giving him a seductive look. He was trying his best to not release his load now, but it was clear that he couldn't hold it for much longer.
"Sister?" He says.
She looks up at him, but she doesn't stop sucking. He wraps his arms around her head, stilling it and pushing his dick deeper.
"I'm going to cum... You must swallow all of it."
She nods obediently, struggling to take his hard cock deeper into her small mouth. He looks down at her, his hands wrapped around her head holding her mouth against his shaft. He moans as he cums hard and releases his load into her petite mouth, his warm semen fills her mouth, she struggles to swallow it, but does it as best as she can. He releases her head and she slowly gets up, her hand on her mouth as she tries to swallow what is left of his cum and at the same time trying not to puke.
"Fuck, sis... That was amazing."
"I'm glad you enjoyed it." She says, wiping the corner of her mouth with the back of her hand.
"Did you like the taste of cum?" He asks, smirking.
"It tastes bad, but good at the same time" She tries to explain.
"But I guess it's not too bad." She continues.
"Lay down, let me return the favor" He says seductively.
She nods and obeys, laying down and spreading her legs. He kisses her inner thighs and she moans with anticipation. Then, looking up at her, he kisses her pussy. She gasps and her pussy gets wetter. He licks her soft spot, sliding his tongue in and out of her vagina. She bites her own hand, trying to suppress her moans. He moves his tongue hungrily on and around her clitoris. Her body begins to tremble. She shrieks and moans even louder. She puts his pillow on her head to muffle her noise. That amuses him, making him lick her even more eagerly. That's when she cums. Her body shakes and her pussy is overflowing with her juices. That didn't stop him. She wraps her legs around his head. He pushes his tongue inside her pussy and swirls it, making her eyes roll back in ecstasy. He keeps licking while she cums again. Her whole body relaxes and she lies there panting. She is still moaning and laughing when he pulls his face out of her pussy.
"I love you..." She says, trying to catch her breath. He smiles.
"I love you too, sis."
He then positions himself between her legs and looks up and down at her nude body. She bites her lip, feeling his hard dick rubbing on her wet pussy. He tells her to move her legs wider apart. He aims his cock at her entrance and reassures her that he will be gentle. She nods, trusting him. Then he pushes his cock slowly inside of her tight pussy. She squirms trying to process all the pleasure (and some pain) that was taking over her body. She puts her hand on her mouth to muffle the moans. He begins to thrust his hard dick into her. She never imagined that her own brother would do this to her, not that she would like it so much. Every thrust makes her petite body shake. He enjoys watching her boobs bounce to the rhythm of the pounding. She wraps her arms around him as he fucks her faster and deeper, both getting close to cum.
"I'm going to... I'm almost there!" She says between moans.
He didn't reply as he was also almost ready. After a few thrusts, they both came. He moans as he fills her pussy with his warm cum. She cums once more, feeling his fluids filling her pussy and womb. He lies over her, and they are both covered in sweat. She pushes him aside, his weight crushing her. They hugged tightly, panting, their faces so close that they could feel each other's breath. Their lips brush, she closes her eyes and he leans closer to kiss her. Even after all the sexual things they did, kissing felt the most weird. They begin kissing hesitantly and awkwardly, but hesitation gives way to passion, and they kiss deeper and deeper, their tongues swirling around each other. Their hands explore each other's body while kissing. They keep kissing till they fall asleep, she sleeps resting her head on his chest. At some point late at night she got up and went to her room.