The Foundling Ch. 04

Foreword: This story has nine chapters of about this length. The first four chapters are one-on-one with each family member, with dialogue suggesting faux incest. The last four chapters involve actual incest and group sex, including father-daughter, mother-son, and brother-sister. There are mild to moderate fetish elements, including feet, restraints, anal play, and spanking.

Abby pulled up to the curb in front of her house and sighed melodramatically, although no one was around to hear it. She'd stayed out as late as she reasonably could on a school night, going to dinner with her team after the game and lingering over her food, but no amount of delay could save her from having to face the grim reality that awaited her when she got home. Shaking her head as she got out of her car, she made her way slowly to the front door, dreading the thought of having to share her personal space with an interloping orphan.

It was still hard for her to accept the idea that her brother and parents had been so eager to welcome the girl into their home, but she supposed it was easier for them to accept the new situation since they weren't the ones who would have to deal with it most directly. It reminded her of the 'not in my backyard' phenomenon she'd learned about in school, where people would support an initiative as long as they didn't personally have to deal with it. Abigail entertained a brief fantasy of forcing Shannon to sleep in the actual back yard as she entered the house.

"Hey, I'm home!" Abby called out, a little surprised that no one was downstairs watching TV or otherwise hanging out. It seemed too early for anyone to have gone to bed already, but from the faint noises originating upstairs, it sounded like that's where everyone was. Sighing again, she trudged to the second floor as ponderously as she could, not quite stomping, but making her footfalls heavier than they needed to be.

"Ugh!" Abby scoffed in revulsion, hearing soft moans and grunts coming from her parents' bedroom as she passed. It was pretty clear that they were having sex, and while it wasn't the first time they'd failed to ensure their total privacy, it was highly unusual for them to be so brazen about it. Abby thought that they ordinarily did things only on weekend mornings when she and her brother were sleeping in. "Gross!" she muttered, trying to walk as far from their door as possible, as if the extra few inches of space would help muffle the sounds of their passion.

Jake's light was out, but there was a dim blue flickering barely visible leaking from under his door, so Abby guessed that he was probably in his room watching pornography. She shuddered in disgust and crept past as quietly as she could. "What the heck has gotten into them tonight?" she mumbled, opening the door to her room and slipping inside.

The unpleasant evidence of her family's carnal engagements had temporarily made Abigail forget what awaited her, and she gasped in shock at how different her room looked when she finally saw it. She'd been expecting a bit of rearrangement from a second bed being added, and maybe a second dresser, but it looked like all the furniture had been replaced, and a large new queen-sized bed dominated the space.

"Welcome home, little sis!" Shannon said brightly, looking up from her phone as she laid sprawled near the center of the mattress.

"What happened to all my stuff?" Abby asked. She intended her voice to convey her outrage and indignation, but her tone quickly shifted to mere petulance, sounding more like whining than righteous fury.

"Don't worry, I moved your things into the new furniture, sis!" Shannon replied, patting the bed beside her. "Come try this thing out! It's super comfy!"

"But where's my bed? Where am I supposed to sleep?" Abby said, still sounding like a griping child to her own ears, which only served to make her more angry. She managed to throw her bag down forcefully, although it caused her to blush in embarrassment.

Shannon merely smirked, though whether at her display of temper or her question, Abby wasn't sure. "Don't be such a silly, little sis! This bed is plenty big enough for both of us!" the new girl said with a giggle. "Now, why don't you come pick which side you want!"

Abby stood where she was, staring at her unwanted new sister with disbelief and a feeling she thought should be horror, although it seemed to plateau at mild discomfort for some reason. She cleared her throat a few times but faltered before saying anything. Finally, after more than a minute of stupefied silence, she croaked out, "You're kidding, right?"

Shannon laughed merrily and replied, "Why would I be kidding? Look how much room there is!" To emphasize her point, she sprawled out sideways, and proceeded to wallow around, somehow managing to show off her ass as she did so. When she straightened up, kneeling near the center of the bed, both of her breasts had fallen out of her tank top shirt. Abby squirmed, unable to look away at first, before blushing and pointing.

Shannon giggled and tucked her boobs away, saying, "Oopsie! Good thing we're both girls! It's not like I've got anything you haven't seen before!" Abby got a curious feeling in the pit of her stomach, thinking to herself that her own breasts weren't anywhere near as nice. Granted, the two girls were close to the same size, and could probably swap bras in a pinch, but the foundling's nipples were a pretty shade of rose pink and seemed in perfect proportion to her breast size. Abby couldn't help but feel that her own areolae, which were larger, puffier, and almost the same color as her regular flesh, were in some way inferior. A flare of jealousy leapt up to join her simmering anger.

"You seem a little cranky tonight," Shannon said, her bright expression dimming to merely dauntingly cheerful. "Big brother told me you had a game today. I'll have to come watch the next one! But are you tired? Were you hoping to go to bed early?"

For some reason, having her new sister express an interest in attending one of her volleyball matches was even more irksome, perhaps because Abby's actual relatives generally didn't bother. It seemed vaguely touching, along with what appeared to be genuine consideration regarding her potential fatigue, and it all served to make Abigail more suspicious and irritable than she already was. "Yes, I am tired!" she snapped, finally managing to sound more than just a little put upon. Shannon seemed surprised at her outburst, which made Abby feel free to continue. "I wanted to relax and unwind in my room, but apparently I don't get to do that anymore! Apparently I don't get to have a room anymore! It's so stupid and unfair!"

Once her tantrum subsided, Abigail felt a little better at first, but her mild sense of triumph gradually twisted into shame as she saw the look of hurt on her new sister's face. The silence stretched on uncomfortably long, and she finally mumbled, "Sorry. I guess I really am tired. I'm gonna go get ready for bed. Sorry." Sheepishly, she rummaged around in the new dresser for a minute or two, looking for some of her night clothes, and then scurried into the bathroom without a backward glance.

Once out of the foundling's presence, Abby's ire managed to bubble back up, although it was still tempered by her regret for her outburst. She brushed her teeth and changed into her normal sleepwear, consisting of a long T-shirt and old but comfortable cotton panties. Sighing at her reflection, she pattered back into the shared bedroom, idly noting that Shannon had turned the lights down, leaving only a dim table lamp lit.

When Abby threw back the covers she suddenly realized that Shannon was completely nude. "What the fuck?" she said, pausing with one knee on the mattress. "Why are you naked?"

Shannon smiled, and her lips twitched as if she were trying to suppress her urge to giggle. In a soft voice she replied, "This is just how I like to dress for bed, silly! And these sheets are so soft and wonderful on the skin! You really ought to strip down so you can truly appreciate them!"

"Oh, you have got to be fucking kidding me!" Abigail hissed in disbelief, her anger boiling forth once again. "You can't honestly expect me to get naked and get in bed with you? God, you're such a stupid bimbo slut! I can't believe we adopted you!"

Shannon's suddenly dark expression caused Abby's outrage to quickly drain away, leaving fear in its place. She tried to utter an apology of some kind, but all that emerged was a timid squeak. The foundling threw the covers aside and stood up, revealing her nude form in its entirety, and Abby's eyes couldn't help but follow those curves. The new girl walked around the bed until they stood nose-to-nose. "You've no reason to be so mean," she said sternly, seeming completely in command even though she was the naked one. "When was the last time Mommy or Daddy gave you a spanking?" Shannon asked.

Eyes going wide in shock and confusion, Abigail replied, "Um, never? Maybe when I was really little, but I can't remember ever being spanked."

"No wonder you're such a brat," the new girl replied with a frown. "Well, I guess disciplining you falls to me, then," Shannon said with a sigh. "Take those clothes off and bend over the bed."

"You're not serious, are you?" Abby asked, timidly, wishing she could still summon up any of her anger at the absurd command.

"Now!" demanded Shannon, in a commanding voice that seemed like a shout even though it was delivered quietly. Abby squeaked again, quickly sliding her panties down over suddenly shaking knees. She whipped off her shirt a moment later and leaned her arms on the mattress, blushing red at the feeling of subservience and the shamefulness of being exposed in such a way to her new sister.

Shannon's hand rested lightly on Abby's buttock for a moment, causing goosebumps to raise on her flesh as she shivered. "I think ten swats is a good place to start. I want you to count them out loud, and say 'thank you' after each one. If you forget, or lose count, we'll start over. Understood?"

Not trusting herself to speak, Abby nodded her head, then cried out in shock at the sharp, stinging slap she received on her ass. There was a short period of silence, followed by another strike, and Shannon dryly remarked, "I guess I'm not the only stupid bimbo in the room. If you don't start counting, this punishment might never end. And remember, numbers start with 'one,' no matter how many spanks you think you've had."

Gritting her teeth, Abby nodded, feeling a warmth in her belly that she hoped was her anger returning. At the next firm blow on her hind end, she managed to force out, "One! Thank you, Shannon!"

"That's much better," said the foundling. "But call me 'Big Sister,' instead."

"Two! Thank you, Big Sister!"

"Three! Thank you, Big Sister!"

Although the spanking wasn't especially forceful, doing little more than causing her ass cheeks to glow warmly, Abby found the experience utterly demeaning and infantilizing. The new girl was only a few months older than her, barely nineteen, but in the space of only minutes she'd thoroughly established her dominance. Every new swat made Abigail feel more submissive, and worryingly, more turned on. She was no stranger to the sensation of arousal, but she had never felt it so strongly before, and never in conjunction with pain, shame, or the presence of another woman. It was almost a relief to cry out, "Ten! Thank you, Big Sister!" She wondered if it would be too obvious to say she needed to use the restroom, as a cover for some privacy to touch herself and seek other relief.

Shannon's hand lingered on Abby's ass after the spanking, and it was soon joined by her other as she soothingly massaged the cheeks. "I hope you learned a lesson!" she chided.

"Yes, Big Sister! Thank you!" Abby said reflexively, cringing internally at her servile response. She then gasped in total shock when her new sister's hand slid down between her cheeks and probed at her pussy. Her face turned as red as her ass at the squelching intrusion of her heretofore private parts, yet she made no effort to escape or otherwise stop the invasion.

"I guess I'm not the only slut in the room, either, am I?" Shannon remarked, sounding amused. When Abby's only response was a whimper, the foundling's fingers maneuvered until they were stroking her clit from either side, making it painfully erect. "I asked you a question!" she said.

"No, Big Sister! I'm a slut, too!" Abby affirmed with a hiss and a groan. Part of her hoped the entire experience was merely a humiliating dream that she'd soon wake up from, but not until she'd cum.

"I thought you might be!" Shannon said, still sounding like she was on the verge of a giggle fit. "And whose slut are you?"

"I'm your slut, Big Sister!" Abby confirmed, feeling her sex clench on an invading digit at the admission. "Please, Big Sister, let your slut cum!"

"Does my slut think she's earned an orgasm?" Shannon asked rhetorically. "She hasn't been a very good girl this evening, has she?"

"I'm sorry, Big Sister!" Abby whined. "I'll be better! I'll be a good girl for you!"

"Is that a fact?" Shannon said, finally allowing herself to giggle again. "You say that, but are you sure? Good girls pay back their orgasms in kind, and with interest!"

Abby quailed for a moment or two, understanding perfectly well what the metaphor meant, but couldn't stop herself from answering, "I'll be good, Big Sister! I'll make you cum if let me cum first!"

"You'll make me cum twice!" Shannon corrected as her fingers sped up, making Abby wail as she approached her peak. She was almost certain her parents and brother could hear her, if they were awake and not completely engrossed in their own nasty fantasies, but she couldn't let that knowledge stop her. With a final, breathless hesitation, Abigail was over the crest and trembling in the throes of the strongest orgasm she'd ever experienced, by far. She felt a few streaks of liquid running down her legs, and her vision blacked out, although she didn't believe she actually lost consciousness.

Shannon was kind enough to give her a few minutes to recover, but soon enough had positioned Abby in the center of the bed and straddled her head. The little sister did what she could to provide pleasure, sticking out her tongue and stroking whatever flesh she could reach, but she really had very little idea what she was doing. Shannon didn't seem to mind in the slightest, mostly just using the submissive girl's face as a sex toy to rub against. Abby felt kind of awkward and unaccomplished, but found herself growing to enjoy the swampy heat of being trapped between Big Sister's legs. By the time the new girl had ridden Abigail's face to the two promised orgasms, she was beginning to hope that the night's adventures would not be a singular occasion.

"Good night, Little Sister!" Shannon said later, giving the girl a firm kiss on the lips, no doubt tasting herself on Abby's breath.

"Good night, Big Sister!" she said meekly.

As it turned out, the sisters didn't wind up needing to choose sides on the bed. Abby curled up as the little spoon in the middle of the mattress as the two nude girls snuggled up and drifted off to sleep. Abby's mouth curled into a smirk as she lingered on the cusp between dreams and waking, imagining all the ways she might act bratty and force her Big Sister to discipline her. The fantasies were humiliating, but even hotter to her for being so shameful.