Toying with Sister

Jason is tired of his sister's obnoxious, selfish behavior. She doesn't contribute to the household chores, she spends their mother's money instead of earning her own, and she refuses to be quiet at night when he's trying to sleep. He develops a plan to bring her into line via a spell-casting experiment involving a doll. Very dark content rating, 6k words.

Content Warnings/Notes: incest (brother/sister, both 18+); magical manipulation and control over another person's body without consent; sexual coercion and dubious consent due to the above; misogyny, including slut-shaming.

It's important to understand that Jason's actions were provoked.

His sister Dawn had always been self-centered, but she had only gotten more obnoxious since their father had fucked off and abandoned the family to go play house with some other woman in Taiwan. These days, Dawn was a terror: flippant, rude, and disrespectful to everyone.

Jason was a year younger than her, at eighteen to Dawn's nineteen years, but sometimes he felt like the only adult in the house. Their mother had apparently given up on parenting in favor of pursuing her rotating cast of new boyfriends--not that Dawn had ever listened, anyway. Dawn didn't have a job, she didn't do shit around the house, and whenever she wanted to go shopping, she'd just "borrow" their mother's credit card and hop off to the mall.

That was all bad enough, but the breaking point was when Dawn expanded her little shopping sprees to include the adult toy store.

Jason learned all about this because his bedroom was right next to Dawn's, sharing a wall. It used to be one room, actually, that had been divided into two as they grew up, and the sound-proofing between the rooms was minimal at best.

So Jason got a front-row seat, auditorily speaking, to Dawn's newest avenue of self-exploration.

He became well-acquainted with the sounds of his sister buzzing her pussy and coming, loudly. Every night. Sometimes twice in a row. Leaving him wide awake, too aroused to sleep and too annoyed to jerk off.

When he pounded on the wall, she pretended not to hear him. When he confronted her directly, and told her that he wanted some peace and quiet at night, Dawn just laughed and said, "Good luck with that."

As a last ditch effort, he donned rubber dishwashing gloves and snuck into her room to confiscate the toy, which he buried in the trash. Of course, Dawn just replaced it, moaning even louder the next night.

So, really, you have to understand that it was all Dawn's fault. Jason was left with no choice but to turn to magic.

Maybe you're thinking that magic isn't real. That's what most people seem to think; a lot of people are too afraid of looking silly to even try, and this is where Jason has always seen himself as being a little brighter than most people.

He'd been using magic to solve problems and improve his life since he was a kid, and it had always worked out very well for him.

It started with his good luck charm--a quartz rock he'd found with a tiny bit of glittering gold seamed through it--which he carried with him everywhere, and which had gotten him out of a few hairy situations. In middle school, when some of the older kids gave him a hard time, he figured out how to cast curses.

Not out of a spell-book or anything; he'd taken a look at those, the "Alternative Beliefs" section of the bookstore that had manuals for witches and the history of Wicca, but none of it seemed to really correlate to what he was doing. He just learned as he went, trying out what made sense to him and seeing if it worked.

The one that had worked the best was the spell that had made birds shit directly on one kid's head every day for a week.

When one of his friends had complained about the same bully, Jason had even offered to teach him how to cast a curse--but his friend had just acted like Jason was making some kind of crazy joke. His friends called him "Gandalf" for the rest of the year.

Jason didn't try to tell people about magic any more. But he knew it was real, and he had kind of been looking for an opportunity to try something a little more complicated.

So when Dawn went and pissed him off, he knew exactly what he wanted to do about it.

First, he went back in her room--not for the sex toy, this time, but for a different kind of toy: he ventured into his sister's closet, digging through piles of unsorted clothing and old schoolwork until, at long last, he unearthed a doll. Not a baby doll, but a fashion doll: one of the cheap dollar-store knock-offs that their father used to buy whenever Dawn asked for the newest Barbie.

It wasn't in great shape. The synthetic hair was matted on one side with glue, and some of the flesh-colored plastic was scribbled over with marker. It wore only a t-shirt, skewed and partially unravelling.

Half of magic was putting in the work, so that was Jason's next step. He tossed out the t-shirt--this doll wouldn't need any clothes--and then washed it, first with soap and water, and then with rubbing alcohol to get the marker off. That also took off the details that had been clumsily painted on at the factory, leaving its face blank. He cut off the frayed and sticky hair, and at the end, he had a blank vessel.

The other half of magic was intention, so he explained to the doll what was happening as he made it.

He painted his sister's features onto its face, and said to it: "You look just like my sister, Dawn. These are Dawn's green eyes and Dawn's smirking lips. This is the stupid, obnoxious face she always makes when she thinks she's getting away with something."

He made a wig of black yarn and glued it to the doll's head, then cut it into Dawn's hairstyle, telling the doll: "This is just how Dawn wears her hair. Now you really are Dawn. I hate you just as much as I hate Dawn, and because I control you, I can control Dawn."

It took a lot of repetition, and a lot of very simple words, because plastic wasn't very smart.

Each day, Jason told the doll what Dawn had done: "Today, you pissed me off so much. I was trying to work on my college applications and you wouldn't stop arguing about stupid shit with Mom." Or, "You said you were going to look for a job, but you really just hung out with your friends all day. Here are the photos you posted on Instagram."

After two days, the face of the doll began to change, becoming more life-like and detailed than he could have possibly managed with his rudimentary art skills.

After five days, the yarn wig had a softer and lighter texture, almost like human hair.

After a week, the doll was a bit warmer than room-temperature whenever he picked it up. That was when he felt ready to move to the next stage.

He took a trip to the mall and picked up an adult toy of his own--one of the cheap little lipstick vibrators that they sold in the novelty store. That night, while Dawn got herself off in the next room, he turned on the little vibrator and rubbed it vigorously over the doll's null plastic crotch.

The magic was acting fast, now. It was only four nights before he pulled the vibrator away and found that the plastic had developed a roughly-sculpted little vulva, and it was even a little bit wet. The doll smirked up at him with malevolent self-satisfaction, doubtless reflecting the emotional state of his sister in the next room.

Jason smirked back. "There you are, Dawn."

He turned the doll over and, using a permanent marker, wrote DAWN in big, black letters on the back.

***

Jason put the doll to use the very next night.

As per usual, when he heard the buzz of Dawn starting up her vibrator, he turned on the little one he'd bought and started using it on the doll.

By this point, Jason was pretty much an expert in the sounds his sister made while masturbating. He listened carefully to her, both the theatrical moans and groans and the more honest, breathy cries.

As soon as she began to pick up volume and speed, in the way he knew heralded her building orgasm, he switched off the cheap little vibrator.

In the next room, the buzzing of Dawn's much more expensive toy cut out, too.

"Fuck!" Dawn shouted, her voice just barely muffled by the wall. "What the shit! Fucking piece of junk--"

She clattered and slammed through her room--looking for more batteries or a different toy, maybe.

Jason grinned and reached for his permanent marker.

The doll was glaring at him. "It's okay," he informed it. "You can still have a little bit of fun."

Along the side of the toy, he drew a short line and then a big X, then held it up to show the little plastic homunculus. "See? Just enough to get you going."

The doll did not look any happier.

For good measure, he drew careful little null signs on each of the doll's tiny hands. Sure, maybe it was overkill--it was the vibrators that had bothered him, after all; if Dawn had just stuck to good old-fashioned manual masturbation, or even gotten some quieter toys, they wouldn't have a problem--but he'd come this far. Might as well make the lesson stick.

"Ah-hah!" Dawn crowed in the next room, followed by a new buzzing in a different pitch. "Yes--mmm, there, yes--"

The doll's lips curved into a vindictive, triumphant smirk. The little vibrator, laid out next to it on the bed, was rocking gently in place, even though it was turned off now.

"--yes, yes, yes--"

Just as Dawn's cries picked up once more, the bewitched toy gave a final shudder, and the buzzing sound in the next room cut off again.

"--FUCKING SHIT!"

Jason tucked away the doll and the toy, and went to bed quite satisfied with himself.

***

One week later, Dawn was taking poorly to the curse.

She had made two more attempts to purchase new toys. Twice now, Jason had listened as she'd impatiently ripped a new device from the packaging; he'd heard her pacing the room as she waited for the thing to charge. Twice, he'd listened to her moaning and whimpering as she massaged herself.

Twice, he'd witnessed her fresh cries of anguish when the toy died right before she could reach her peak, leaving her hanging.

In between, she'd tried her fingers. That was much quieter, which Jason was grateful for. That was all he'd wanted, really, was for her to shut the fuck up--but he found himself listening now, straining for the more subtle noises of her frustration as she tried to get herself off the old-fashioned way.

Tried, and failed.

It was having a stronger impact than Jason had expected. Dawn was definitely looking worse for the wear. She spent more time in her room, but always looked tired when she did come out. Her hair hung limp and un-styled, her makeup done messily or sometimes not at all.

Every time Jason asked if she'd slept alright, just like a concerned brother ought to do, she snapped at him.

The doll had undergone its own developments. Its expression often fluctuated between irate frustration and wide-eyed, weepy desperation; sometimes its eyes even wet up with real tears that ran down its plastic cheeks. Its little pussy was even more detailed now, the lips of the vulva soft enough to separate at his touch, revealing a painted-on little hole and clit that were often wet in their own right.

A week since his sister had last had an orgasm, and she was already falling apart.

Jason, meanwhile, was on top of his game. He was feeling better than ever. He'd gotten off nearly every night, stroking himself in his room as he listened to Dawn's desperation, as he watched the roller-coaster of her need and frustration reflected on the face and body of the little doll.

Whenever he came, he made sure to get at least a bit of it onto the doll, rubbing his emissions into the plastic skin until it vanished. Bodily fluids, he'd found, were a strong way to reinforce the power in a spell. He could see it working in the way the doll's skin grew softer and more healthy-looking, the way the markings he'd drawn looked less like ink scrawled over plastic and more like a tattoo under flesh.

Now, it was a Saturday morning, and Jason was excited to try something new.

As soon as he got up for the morning, he pulled out the little shoebox where he was storing his Dawn-doll and her accessory. He flipped the little vibrator onto its lowest setting, and then settled it carefully on top of the doll, wrapping the doll's jointed thighs around it to keep it pressed against the doll's little sculpted pussy.

"There you go. Let's see how that feels," he murmured, and then tucked the obscene little amalgamation under his pillow to muffle the reedy sound of the cheap vibrator before he went out to the kitchen.

Breakfast was toast and cereal. Dawn couldn't seem to sit still for it, shifting on her hips like the wooden dining chair was uncomfortable, frowning down at her bowl of Cheerios in a confused way.

Their mother asked about plans for the weekend, if either of them needed the car for the day. Dawn barely seemed to hear her, too preoccupied with rubbing her thighs together under the table, so Jason called the car for the morning; he needed to pick up a few things.

It probably wouldn't be safe for Dawn to drive in her condition, anyway. She was holding a spoonful of Cheerios and just staring at it, like she had forgotten what the next step was.

Finally, she dropped the spoon back into her bowl with a clatter and stood up, pushing her chair back so fast that it nearly tipped over.

Their mother squawked in surprise and offense. "Dawn, don't you just walk away and leave your dishes--"

"Bathroom," Dawn snapped in response, already halfway out of the kitchen.

Their mother huffed and scowled, but, as per usual, made no real attempt to bring her to heel.

"I'll go check on her," Jason offered. "Maybe she's, uh, feeling sick."

"Put your dishes in the sink first!"

He ignored his mother and focused on making his way down the hallway as quietly as possible, avoiding the squeaky board in the center and sliding on his socks as he rounded the corner so that his feet wouldn't thump against the wood.

Upon reaching the bathroom door, he was rewarded with the sound of Dawn's low, desperate moaning. When he leaned in close and held his breath, he could even hear the soft, wet noise of her hand working over her pussy.

"Oh, fuck," she whined under her breath as Jason listened. "Right there, fuck, please--I'm so fucking close, come on--"

Jason pounded on the door.

Dawn yelped, then shrieked, "FUCK OFF!"

"Hurry up in there! I gotta go!"

"GO USE THE OTHER BATHROOM, YOU FUCKING ASSHOLE!"

Jason grinned. Dawn sounded hysterical, like she was close to a total breakdown, and it'd only been half an hour. Could she feel it, like a phantom vibrator teasing her, or was it just creating an indistinct arousal? How long would it take for her to snap--or would the cheap toy run out of battery first?

One thing was for sure: Jason was in for a fun weekend.

He went to his bedroom and, after checking the packaging for the vibrator, wrote up a quick shopping list:

* Q-tips

* Watch batteries ("button cell"?)

* Rubber bands

* Vaseline

* Condoms!!

When he left the house fifteen minutes later, Dawn was still hiding in the bathroom--and the doll was still hidden under Jason's pillow, the little toy rattling away against its tiny plastic crotch.

***

Jason didn't return home until after lunch--it was harder than he'd expected to hunt down some button cell batteries.

His mother took only a moment to scold him for coming back late and for not putting any gas in the car before she was snatching the keys from him, in a rush to "visit a friend". One of those new friends she'd made since the divorce, Jason had to assume, from the way she'd done up her makeup.

She'd be out for hours, then. Maybe even all night.

Jason whistled to himself as he walked to his room. The house was quiet, and Dawn's bedroom door was shut tight, but he didn't worry about where his sister was; with the state she'd been in that morning, it seemed really unlikely that she was in any condition to be going out anywhere.

Sure enough, once he got into his own bedroom, he could hear her through the wall: a faint, rhythmic creaking in the springs of her bed. Jason grinned.

He lifted the pillow from his own bed, and was delighted by what he found there.

The vibrator was still humming away, although faintly now, clearly at the end of its battery. The doll had an expression of abject misery on its face, eyes dripping with tears, mouth curled in an exaggerated pout. There were two little wet spots in his bedding--one from the doll's crying, and the other from its weeping cunt.

Jason pushed the doll's legs apart and picked up the dying toy, using it to tease and push at the doll's plush, developing vulva. This revealed a bit of movement: the clitoris--previously just a little suggestive pink swirl of paint--was now a three-dimensional, sculpted feature, and it gave the tiniest twitch in response to his harassment.

"Look at that," he breathed, and then tossed aside the toy, leaning in and prying the doll's slit open roughly with his thumb to get a better look.

The tiny little facsimile-organ, no larger than a grain of rice, twitched again. Beneath it, the little dot of color that had previously indicated the doll's pussy had become a divot, the start of a hole.

"God-damn, am I good or what? And now you're gonna be good for me--aren't you, Dawn? We'll get you house-trained. Let's clean you up first, though, what a mess."

He turned off the little vibrator before it could burn itself out, wiping it dry on a tissue. Then he picked up the doll and took it with him to the bathroom, where he turned on the sink--nice and warm--and then arranged the doll under the faucet: legs spread wide, pussy and clit directly under the running water. Cleaning and teasing at the same time.

Down the hall, Dawn's voice echoed on a confused, desperate cry, muffled by the two closed doors between them.

Jason smirked and reached down to prod a the doll's rubbery pussy, rubbing his fingertip roughly over its tiny little clit. "You can feel that now, can't you? Or is it still just making you really horny?" He rubbed and pressed a bit, listening for more sounds from down the hall, but there was only quiet.

He imagined Dawn on her bed, face pressed into a pillow to silence herself, hips humping desperately into the phantom sensation--or maybe she had a hand between her legs, trying fruitlessly to bring herself off, even though she must have figured out by now that it just wouldn't work.

"Stupid cunt," he muttered, and then flicked a fingernail meanly against the doll's helpless, exposed clit.

Dawn squealed.

Jason laughed, and got into the shower, leaving the doll at the mercy of the sink faucet.

While he was in there, he jerked off--quick and efficient, just to take the edge off. He knew all the jokes about virgin guys going off too soon, and he didn't know how true those were, but he wasn't taking any chances. He planned to take his time with the final stage of his plan.

As he tugged his cock, he thought about Dawn: shut away in her bedroom in a confused haze of arousal, unable to find the simple relief of release for herself.

Was she desperately trying to finger herself? Or trying one of her toys again, praying that it wouldn't fail on her this time? Had she given up in despair?

He came hard, groaning as he painted the shower wall white. "Fuck," he panted, and then, "God, it's gonna feel so good to fuck that useless slut."

After, he got out and dried off, and then retrieved the doll from its own shower in the sink. There was a new expression on its face: focused concentration, almost, its painted eyes rolled upwards to show mostly the whites, as if it were on the edge of ecstasy. The expression persisted as Jason dried it. He spent more time than necessary rubbing the rough fabric of the towel over its little nipples--now pert and sculpted and hard, just like its clit--and between its legs.

Only once he brought the doll into the bedroom and left it discarded on his bed for a while, sorting through his bag of newly-purchased goodies, did its expression return to one of thwarted frustration and distress.

"Feeling neglected?" he asked, speaking loudly enough that he knew Dawn must be able to hear him through the wall. "Don't worry, I've got something special for you."

"Who are you talking to in there, you fre-e-EAK--!" Dawn's petulant sniping turned into a loud yell as Jason spread the doll's legs and shoved a vaseline-coated Q-tip into its cunt.

The hole was already deeper than it had been before his shower. Even so, it was still developing, and he could only get the end of the Q-tip partway in, leaving the doll's little pussy stretched obscenely around the widest part of the cotton swab.

Jason groaned at the sight, wondering if Dawn was feeling a comparable stretch.

"Come on," he grunted, twisting the swab back and forth and jiggling it roughly, delighted by Dawn's yelping cries carrying through the wall. "Open that nasty little hole up for me, come on, come on--yes." He sighed as the Q-tip abruptly sunk deeper, the doll's vaginal canal lengthening and stretching to accommodate it.

Dawn, for her part, sounded hysterical, hiccoughing and sobbing, her bed once again creaking with renewed vigor. "Fuck--fuck--my pussy, what the fuck, oh God, oh, oh, oh--"

"You like that?" Jason called to her. "Just hold on a minute, I've got something else for you."

"What, what do you m-mean, what are you--ughh--"

Dawn's confused wails quieted to emphatic groans as Jason twisted and thrust the Q-tip a couple more times. Once she seemed settled down, he set the doll aside--the swab still jutting coarsely out from between its legs, disappearing into its dripping pussy--and grabbed the fresh pack of button cell batteries.

It took a minute to get the packaging open, and then some time to figure out how to open up the little vibe and swap in a new battery. But finally, the thing came to life with a fresh, almost angry buzz.

He touched the tip of the vibrator to the protruding end of the Q-tip, and Dawn squealed.

"OhmyGodohmyGod--it--my pussy--ohhh--!"

Jason grinned. He carefully arranged the doll the way he wanted: toy between its legs again, but further down this time, so that the Q-tip was receiving the brunt of the vibrations, and the other end of the toy--where the vibrations were suppressed, to make it easier to hold--was what pressed against its little clit. A couple of rubber bands were enough to hold the entire arrangement together.

By that point, Dawn was gasping and sobbing wordlessly, her bed banging noisily against their shared wall, and Jason's cock was halfway hard again.

He didn't waste any more time. Didn't bother throwing on a pair of boxers, or even wrapping a towel around his waist; there was no point, when he was just going to take it all off in a few seconds anyway.

Jason left the hapless doll on the bed, grabbed the package of condoms, and went to his sister's room.

Inside, he found a mess. Dawn was disheveled, half-undressed; the jeans she'd been wearing at breakfast were tossed aside, her shirt pushed up and twisted, her hair mussed like she'd been rolling around in bed. She was straddling the corner of her mattress, rutting her crotch against it in a wild humping motion, her underwear pulled half-down from the back as she tried to get the right angle to stuff her fingers into her cunt at the same time.

She whipped her head around as Jason stepped into her room. Tears streamed down her cheeks, her face splotchy and red, flushing even deeper with embarrassment as she froze.

"Y-you--what--how are you doing this? What did you do to me?" she demanded, clearly aiming for accusatory, but the words came out more whiny and desperate. Even as she spoke, her body started to move again in little hitching motions, like she couldn't help herself.

"You don't need to know the details. You probably wouldn't believe me anyway," Jason informed her. "All you need to know is this: you're not going to be able to come on your own. I'll fuck you, right now--but only if you're a good girl and do what I say."

"WHAT? You--I'm your sister, you creep--!"

"You want to come, don't you?" Jason interrupted.

Dawn went silent, her mouth gaping open as she stared at him. Her hips kept going in that helpless, needy little grinding movement, rubbing forward against the corner of her mattress, then back onto her fingers. The look in her eyes was half-crazed.

Finally--in a tiny, breathles voice--she asked, "I can c-come? If you... you'll m-make me...?"

"Yeah," Jason said, and then amended: "Probably. I'm pretty sure." This was all still experimental, after all. "But only if you're good. We're working on teaching you some manners, got it?"

Dawn bit her lip and whined out a low noise of pure desire, her thighs quivering as she rode harder against her bed.

Jason smirked. That was probably the closest to agreement that he could expect, right now. "Take your panties off and get up on your bed. Hands and knees--we're doing this doggy-style. I don't want to look at your stupid face when I'm coming."

Dawn stared at him for another long second, and then she turned away and yanked her wet panties down to her thighs, exposing her pulsing cunt. "Here, just right here," she begged, spreading her feet wide as she continued to straddle the mattress, a shuddering noise punching out of her as she ground her now-exposed clit against the bedding. "I--fuck, please, please--"

"That's not what I said to do," Jason reminded her.

"But--this is the closest I've gotten, please--" she bleated, and Jason finally realized why she was so fixated on grinding on her mattress: it wasn't her fingers, and it wasn't a toy, so the spell must not have been blocking it in the same way.

An oversight that he'd have to figure out how to correct later... or maybe not, since she clearly hadn't figured out yet how to get herself over the edge humping the furniture, even without the spell's interference.

"No," he insisted, stepping in closer and smacking her on the hip. It wasn't as firm as he'd meant it to be, he could tell as soon as his hand made contact, but she still squealed and whined about it. "Up on the bed, where I told you, or you're not getting anything."

"Fuck," Dawn wailed, and then she finally obeyed, climbing up onto her bed and collapsing onto her knees and elbows, pushing her face down into the bedding. "Hurry, hurry, please, it feels like--feels like there's something--I need something inside me, now--"

"Be patient," he scolded. He opened up one of the condoms, setting the rest of the package aside. He was fully hard again now, his body more than willing to rise to the occasion at the sight of his sister's throbbing, needy cunt and the promise of losing his virginity in it--but he'd never put a condom on before, and it took a bit of time to figure it out.

In the meantime, Dawn reached back and put two of her own fingers back into herself, moaning fitfully into the bedding as she pumped them in and out. She was dripping copiously, even wetter than the doll had been, her fluids dangling in long strings and dripping onto the bedding.

"I need it so bad," she whined into her quilt--talking to herself, it sounded like, more than to Jason; making justifications, maybe. "I just, just need it, I, I feel like I'm gonna lose my fucking mind--uh, uh, uh," her words dissolved into a series of helpless, animal grunts when Jason finally climbed onto the bed behind her and put a hand on her hip, her fingers speeding to a frantic pace. "Please, please--!"

"You're lucky that Mom decided to go out, huh?" Jason remarked, sidling up to kneel behind her and using one hand to pull her fingers away, his other to guide his condom-wrapped dick into place, relishing the slick slide of the tip through her dripping folds. "Imagine if we had to wait to do this. Or if you had to keep yourself quiet."

"Please just do it, I can't wait any more, please!"

"If you insist," he said. He rubbed his cock-head along her throbbing cunt again, until the tip caught in her entrance.

Then he grabbed her hips and yanked, thrusting forward at the same time.

There was some resistance, which took him a little by surprise--he hadn't really considered his sister's virginity, had kind of figured that her own vigorous masturbation would have taken care of that if she hadn't hopped on some guy's dick already--but then he bullied his way through, and sank halfway into her with the first thrust.

Dawn pressed her face down into the bedding and squealed, sounding confused and pained and desperate all at once. "Ow, oh fuck, fuck--"

"You said you couldn't wait any more," he reminded her, and pushed the rest of the way in, grunting as his cock was fully enveloped in his sister's tight, hot cunt. It felt fucking amazing--and, despite Dawn's complaints, she was pushing back against him, grinding onto his cock, trying to spread her thighs wider and getting tangled in her own panties that she hadn't pulled all the way down. "God, fuck, you're such a slut."

Dawn only sobbed in response, then let out a pitched keening sound when Jason experimentally rolled his hips. Her entire body shuddered.

Jason paused there to push up her shirt a bit, taking note of how the smooth skin of her back had pebbled up with goosebumps, how her rapid panting was visible in the expansion of her ribs. He touched her--not nicely, really, probably not the way she wanted to be touched, but the way he wanted: squeezing hard at the soft flesh of her thigh, dragging his fingernails down the column of her spine, until she was whimpering and squirming and grinding onto him again.

"Do it," his sister begged finally, her voice cracking. "Fuck me, come on, do it!"

Jason's cock throbbed hard at the desperation in her voice, his balls already aching to spill, even with the precautions he'd taken.

But he held back and demanded: "Ask nicely. Say my name."

Dawn wailed, indignant and frustrated and desperate, and then she did: "Jason, please! Please fuck me, please make me come, please Jason please please please--"

"Yeah. Fuck. You can be trained after all, huh?" he said, and then he finally gave in to what Dawn--and his own body--demanded, and started to fuck her.

It took a few clumsy thrusts to learn the rhythm, the angle, how to hold onto her. But then it all came together and Jason was pounding into her with abandon, reveling in the sloppy sound of his cock reaming out his sister's cunt, the choked cries of Dawn's need as she submitted to being used by him.

"Don't," he warned, when he saw one of her hands slipping down between her legs. "If you're touching yourself, it's not gonna happen."

"Fucking--why!" Dawn wailed, but she listened, gripping tightly at the bedding instead. "What did you--do--to me--"

He didn't bother to answer the question. Just told her, "I can slap your clit, if you want."

"Slap it?! No!"

He shrugged, and instead redoubled his efforts in fucking her.

Dawn cried and gasped and writhed under him, and then--when he found a new angle that allowed him to get even deeper into her--she squealed, "Yes! Yes! I'm gonna--oh God, don't stop, please don't stop, I'm gonna come, don't stop, don't stop--!"

Well, he hadn't really been thinking about stopping, but... it would be pretty fucking funny, wouldn't it? He could just imagine it: pulling out right before Dawn went over the edge, leaving her convulsing and screaming. She'd probably grab her pussy, try in vain to touch herself and relieve the frustration, but she'd be helpless to do anything about it--

"Oh shit," Jason gasped, the words punched out of him as his own orgasm hit, flaring in hot waves down his spine. Any thought of pulling out left him as he grabbed tight to Dawn and buried himself deep in her, groaning and trembling, his balls emptying themselves in thick pulses.

Dawn squirmed wildly under him, fucking herself urgently onto his twitching cock and letting out tight, strained grunting sounds. She sounded beyond the point of sanity, beyond the point of humanity; just a desperate creature, clawing her way towards relief. "Uh uh uh uh uh--Jason, Jason, Jason--"

Hearing her cry out his name again, alongside the wash of endorphins from his orgasm, inspired something like sympathy.

Jason reached down and, with a hand still trembling from the waves of pleasure washing through him, he smacked blindly at Dawn's clit. It took two tries, but he finally landed a sharp hit with his fingers.

"AH!" Dawn shrieked, and then she inhaled laboriously and screamed again, a deep and effortful howl. Her spine bowed and a heavy quaking washed through her body, starting with a powerful, rhythmic squeezing of her cunt around his cock, milking out the last of his own orgasm from him.

Jason sighed, feeling a bit of second-hand relief as his sister, at long last, finally succumbed to her climax. His cock even gave a few final twitches in sympathy, his balls aching a bit as they tried to empty themselves just a bit more.

Not that he would've minded the other outcome--he'd planned for it to go either way, really--but it was hard not to feel something, when she was grinding against him so vigorously, riding her peak so hard, screaming with such excruciating release.

Eventually, her hoarse cries turned to low sobs, her shaking to the loose tremble of aftershocks.

Jason pulled out, and then turned her over. To his surprise, Dawn was crying, tears rolling down her face as she hiccoughed in a great, gulping breath.

Before he could formulate a question to ask--or even decide, really, if he cared very much about this breakdown she was having--Dawn threw her arms around him and clung to him, burying her face in his shoulder.

"--S-so g-good--thank you, thank you, thank you--"

It took a moment for him to understand her blubbering words. When he finally did, he laughed.

"Yeah? Was that what you needed?" he asked, and grinned when his sister nodded frantically into his shoulder. "Better than jerking off with your toys and being a rude bitch about it?"

"... Y-yes." She said it in a small voice; maybe embarrassed to admit that she'd been annoying him on purpose, maybe not quite ready to give up on the idea of controlling her own pleasure. "But, I don't... um... if you s-stop whatever it is, I promise I won't do that any more?"

"Oh, no.. This is how things are now. No toys, no fingers. You want to get off, it's me--or someone else, if you can anyone willing to fuck you, I guess."

"But..."

He pushed her back down onto the bed so he could see her face, soak in her tear-filled, lost expression. "Listen, Dawn. It's just too late to undo it." That might even have been true, in the absolute magical sense; with how far along her little facsimile had developed, it would be tough to reverse what he'd done--but regardless, he had no interest in trying. "You understand? But if you learn to behave, I'll take good care of you."

She stared up at him for several long moments, her eyebrows pinched in pathetic confusion. Finally, she nodded.

"That's it. Good girl," he told her, and patted her on the shoulder. "How about you thank me one more time?"

Dawn's expression screwed up with irritation and she crossed her arms over her chest like she was trying to cover herself, even though her tits were pretty much the only part of her body actually still covered, with her shirt twisted and rucked up to her chest.

It struck Jason then that she looked a lot like the doll, back when he'd first dug it out of her closet--messy, hair in disarray, only wearing a half-ruined shirt.

"Well?" he prompted. "Come on, it's easy. Thank you, Jason, for fucking me and slapping my clit--"

"No! You're--just--fuck off."

Jason laughed and pushed himself off her bed. That was fine; he didn't have to push too hard now. They had plenty of time to work on her gratitude.

In fact, he had a couple of other projects that he wanted to get to work on, too.

***THE END...?***

Look forward to Jason's story continuing in the sequel, Toying with Mother.