Sister's Revenge

Here's chapter two. I've got a few chapters planned out for this story. Again, this story contains incest, futanari (dick girls), and forced sex. If you are uncomfortable reading these types of stories, you can exit the story now. Enjoy! (Note! I've taken a lot of liberty with biology here, for the purpose of storytelling and smut. Please don't get upset by my lack of actual science.)

*****

Groaning, Amanda rested one hand on Jenny's head as the girl took her dick in her mouth, bobbing up and down. Jenny was on her knees, between Amanda's legs, who sat in her computer chair. Amanda used her other hand to browse the internet, checking her facebook and twitter.

It had been a productive weekend, in Amanda's opinion. Their mom had left Friday afternoon. Amanda had spent the rest of Friday showing her little sister the video of her she'd found online, using it to blackmail her into some

very

enjoyable sex. They'd slept together, and all of Saturday Amanda had spent teaching Jenny.

She'd taught her little sister the new rules of the house - If mom was gone, then Jenny was to be naked. If Mom were home or there was a visitor, then Jenny could wear a tshirt long enough to cover herself, or a dress or skirt. But NO underwear. Amanda had made it clear that she wanted access to Jenny's pussy whenever she wanted.

Jenny had seemed to accept her new position as Amanda's cocksleeve Friday night, laying there in bed with her sister, but Saturday morning Jenny had gone back to her bitchy self.

*****

Amanda had woken Saturday, and looked over to see Jenny on her computer, looking for the blackmail video. Annoyed, Amanda was out of bed and, before Jenny could react, Amanda had darted the few steps to her sister and wrapped an arm around Jenny's neck. Not hard enough to hurt, but hard enough to make her cry out.

Amanda lifted Jenny up, wrapping her other arm around Jenny's waist once she was standing. She threw her sister onto her bed, and Jenny actually tried fighting back. But Amanda had taken self defense classes and spent time at the gym, while Jenny's only regular exercise was jogging and fucking. Amanda easily caught Jenny's fists, holding her sisters arms down and climbing on top of her.

"Jeez, I'm sorry Jenny, I thought you had learned your lesson last night. Let me remind you, baby." With one smooth motion, Amanda slammed her dick into Jenny, the smaller girl going silent in shock, her eyes wide. As she held her sister down, Amanda started thrusting in and out, making Jenny moan involuntarily.

Jenny closed her eyes as she tried to hold back her moans, and Amanda picked up speed, her dick pumping in and out of her sister's cunt.

"C'mon, Jen," Amanda grunted, "You know you want this. You loved it last night."

Jenny opened her eyes in a defiant glare, spitting in Amanda's face.

"Bitch!" Jenny growled, and Amanda froze. Her pumping stopped, her dick still buried in her sister, and Amanda just looked at her sister in surprise.

Slowly, Amanda smiled, and Jenny's angry expression changed to one of realization and fear. Jenny gasped as Amanda pulled out of her, her dick making a

pop

noise. Amanda climbed off of her sister, and stood up.

Chuckling, she watched Jenny pull herself into a ball on the bed, backing into the wall. Going to her computer, she saw Jenny had been going through her documents folder looking for the video. She angled herself while standing at the desk so Jenny could see what she was doing.

Clicking, Amanda opened facebook and logged in, clicking on the little video icon and browsed her files until she found the video of Jenny taking two men's cocks. Jenny realized what she was doing and screamed.

Jenny leapt out of the bed towards Amanda, but was too slow as Amanda spun to grab her sister's outstretched arm. She moved quickly, kicking out Jenny's leg and knocking her to the floor. Amanda was on top of her, holding her arm to the girl's throat.

Jenny was silent, her eyes wide in fear. Amanda just stared at her, and very quietly whispered to her sister.

"What are you, Jen?"

Jenny's closed her eyes, sobbing in defeat.

"I'm your... cocksleeve." Amanda nodded, and got up, pulling Jenny to her feet.

Amanda sat down on the edge of her bed, legs spread and her erection pointing up. She gave her sister a shake of the head, motioning her over. Jenny took small steps, standing in front of Amanda, who took her by the waist and guided her forward. Jenny crawled onto her lap, wrapping her legs around her sister's waist and positioning her cock against her wet slit.

"You looked pretty skilled in that video, baby," Amanda said quietly, looking her sister in the eyes.

"You know what to do now, don't you?" Jenny nodded, and slowly impaled herself on Amanda's cock. Amanda didn't do anything, letting Jenny work them both up. Jenny

did

know what she was doing - she'd done it plenty of times with guys from her class.

But Amanda knew that she hadn't had a dick like hers before. She could cum a lot more than most guys, and she was confident that she was bigger than most of the idiots in Jenny's class. Amanda knew that with every thrust, every time Jenny took her dick deep into her, that the girl was getting addicted to it.

"I'm close, Jen, fuck I'm close," Amanda groaned, her hands going to Jenny's waist and helping pull her down harder with every thrust. Jenny didn't say anything, instead moaning as she came close to her own orgasm.

Amanda could feel it when Jenny came, the girl's pussy tightening around her cock, and she came too, ropes of cum filling her sisters cunt. They sat there, bliss filling both of them, as she shot over and over. Amanda didn't pull out, instead holding Jenny against tighter as she let loose one final shot of cum deep into her sister's pussy.

Jenny fit perfectly into Amanda, whose chin rested on top of Jenny's head. Jenny, recovering from her orgasm, reacted on instinct and began kissing Amanda's neck. Amanda moaned and fell backwards, pulling Jenny down with her. She let go of Jenny's head, and she looked up at her sister.

Their eyes met, and they were quiet for a few minutes, just watching each other. Slowly, Jenny inched upwards and, to Amanda's shock, kissed her. The kiss was hesitant at first, but Amanda was quick to pull her further into it. They laid there, lips locked together, for a while.

After a while, they got up, Jenny groaning as her sister's dick slid out of her. Cum dribbled down her leg, and Amanda laughed as Jenny noticed it. Out of the corner of her eye, Amanda saw something on the floor. She bent over and picked up the heart collar, realizing that Jenny had taken it off.

"God, you cum buckets, Amanda." Jenny said, and Amanda just pulled the girl into another kiss. She broke it, and gave her sister a light slap to the face. Jenny fell silent as Amanda fixed the collar baack around her neck.

"Yeah, I do. Now go shower, and meet me in the living room. We have some new rules to discuss, little cocksleeve."

*****

After spending all of Saturday showing Jenny the ins and outs of being her personal cum dump - which mostly consisted of being fucked over and over, and doing what she was told - Amanda decided Sunday could be a lazy day.

Knowing Jenny would return to school the next day, Amanda let her new cocksleeve take it easy. She'd gotten a morning fuck out of Jenny, who then left to go on a date with her (soon to be ex) boyfriend. Amanda had ordered her to break up with him, and she knew that Jenny would obey.

When Jenny left, Amanda decided to snoop around her little sister's room. Going in, she made no effort to hide that she;d been in there. She dug through Jenny's clothes, tossing out a few pairs of plain underwear and bras, and decided she'd take Jenny lingerie shopping sometime soon. She found Jenny's stash of toys under her bed, which consisted of a couple small vibrators, a dildo (barely half of her size, Amanda noticed) and a pair of nipple clamps.

Finally, Jenny got on the laptop that Jenny used, going through her sisters files. She didn't find anything interesting at first, but soon she found something that made her jaw drop. Hidden in a mislabeled folder, Jenny had a collection of pictures, videos and texts.

Mistaking them for a porn collection, Amanda opened the first text document and saw it was an online article. The headline made her freeze - "I married my Futa Cousin, so what?" Amanda read the article, which turned out to be a trashy tabloid piece. But everything in the folder had the same theme.

Videos of futa girls fucking other girls and calling them sister, erotica based on futas fucking their family members, pictures of sluts being taken by futas. Amanda was shocked, not by the content, which was tame compared to some of what she'd seen, but by the fact that

Jenny

had this.

The final thing she opened was the most shocking one of them all. It was a copy of a research article, detailing futas and their biology. The laptop opened to the last viewed page, which Amanda read in shock.

Futanari - or futas, for short - are known to be exceptionally fertile, both in their womb and their semen. While a futanari may become pregnant or impregnate, a pregnant futa may give birth to a boy or a girl, while a woman impregnated by a futa almost always gives birth to another futanari.

The last part of this section was what shocked Amanda the most.

Futanari have the unique position of being nearly immune to the negative effects of inbreeding. Futanari have evolved the ability to impregnate themselves, by "shuffling" the DNA of the sperm cells to be compatible with their own eggs. This allows them to impregnate female relatives without fear of causing birth defects. While physically possible, this is still frowned upon by society.

Amanda stopped reading, trying to comprehend this. She'd known all of this, it was was an older study that she'd had to read as part of her health class back in school. But the fact that Jenny had this saved in a folder with a bunch of porn? She'd known her sister was a slut, but she'd never imagined Jenny having a futa sister fetish.

Realization slowly dawned on her. She could train Jenny, but she would probably try and get even at some point. But why break Jenny, when she could give Jenny the chance to break herself?

*****

When Jenny came home, Amanda was in the living room sitting in the armchair with the laptop on a table next to her. Jenny came into the room, but stopped at Amanda's outstretched palm. Remembering the new rules, Jenny began stripping. She hadn't been wearing much, just a hoodie over a shirt and a skirt, with no underwear.

Naked, she went over to Amanda, who had turned the laptop so Jenny could see the screen. Jenny froze, recognizing it as her own, and terror filled her face when she saw the article Amanda had found on it.

"Wait, thats not - it's, I mean..." Jenny stuttered, and Amanda sighed. She sat up enough to slide her shorts off, freeing her hard on.

"Come here, Jen." Trembling, Jenny obeyed, and Amanda turned her sister around and made her sit on her lap, lining her dick up with Jenny's cunt but stopping just short of contact.

"I'm gonna give you a choice, Jenny." Amanda's tone was somber, and Jenny was afraid, her eyes darting to the laptop screen. Amanda tossed something onto the floor in front of them, and Jenny recognized the flash drive with the video of her on it.

"I deleted the other copies of the video, Jen. I reported the video on that site, and it was removed. That's the last copy."

Jenny held her breath, waiting for the punchline to this joke, but all she got was silence.

"W-Why?" Jenny asked, and all Amanda could do was run a fingertip down Jenny's spine, making the girl gasp.

"Because, I'm giving you an out. You can take that flash drive. Delete the video. Pretend this weekend never happened. Or..." Jenny trembled as Amanda's hand worked it's way around to her front, fingers brushing her clit.

"Or... what?" Jenny asked.

"Or... you can sit down." Amanda answered.

"You'll be my little cocksleeve. I'll break you, and put you back together as my own toy."

Jenny almost groaned as Amanda's hand left her, and realized there were no hands on her. She was keeping herself off of Amanda's dick, which was hovering barely an inch below her slit.

"Well, Jen? It's your choice." Amanda held her breath, afraid of what Jenny would do. She knew this was the best way to pull Jenny in. Give her the option to walk away, and tempt her not to. But she was starting to regret this.

As Jenny hovered there, it felt like time had stopped. Then, slowly, Amanda felt their flesh meet. Jenny made no noise as she sank her sister's cock into her cunt, and Amanda just sat there in shock. Jenny leaned back into her sister, settling into place with a dick inside her.

"I'm... I'm your cocksleeve, Amanda." Jenny said quietly, hesitantly. That was all Amanda needed. She lifted Jenny up, and slammed her back down, making her scream in surprise. Joy filled Amanda's heart.

She actually picked her! Amanda stood up and threw them both to the floor, Jenny landing on her hands and knees while Amanda held her waist. She fucked Jenny, making her little sister moan and scream. All she could think of was her perfect little cocksleeve wrapped around her cock.

All of the anger she'd felt towards her Jenny for the years of humiliation was gone, replaced by the triumphant feeling of knowing she'd won. Jenny could do nothing but scream in pleasure as her arms gave out, collapsing forward into the carpet.

Amanda didn't slow, pounding Jenny's tight cunt as fast as her hips could move. Too soon, she came, once again filling Jenny up with her cum. She pulled out and stroked her cock,flipping her sister over and shooting the last few ropes of cum on Jenny's front.

She embraced Jenny, mashing their lips together, and held her close. Her hand wandered to one of her nipple rings, while her other hand made it's way to Jenny's wet pussy, which was leaking cum, sliding a finger in.

Amanda had never been happier.