Archive of Our Own ^beta

Chapter Text

Emily checked to make sure the front door of her house was locked, on pure instinct.

She knew it was locked, of course. No one lived here but herself and her ten year old sister, Lily. It had been that way for only a few months, though. Emily was still getting used to it.

She was still getting used to a lot of things, actually. She’d turned eighteen only half a year ago, which would’ve been stressful enough without the additional problem.

The problem wasn't finances. In fact, the mansion that Emily stood in was fully her own, not even a mortgage to pay off, with a fund in her name with more than enough money for property taxes and utilities. There was enough money in the fund that Emily wouldn’t have to work a day in her life, if she didn't want to.

The problem was where the money came from.

The walls of the foyer were covered in magazine clippings, all following the media coverage of a horrific murder in the outskirts of a small town. The victims were an affluent middle aged couple, with two lovely daughters, and the media was all over the story before Lily had even found out her parents had been killed.

Emily was just barely eighteen at the time, and with no other known relatives, she agreed to legally adopt her younger sister and inherit the family’s wealth.

Which left her here, double checking a door she knew was locked before turning away, back to her sister's room.

Lily went to bed every night at sunset, without fail, and once she was asleep, it was nearly impossible to wake her up. The sun had set an hour ago, so the ten year old should be fast asleep by now.

When Emily entered her sister’s room, gentle moonlight trickled through the window and dappled the sleeping girl’s face. Lily was dressed in nothing but an oversized white T-shirt, so big that she was practically swimming in it.

Lily found some comfort in wearing her father’s old clothes, Emily assumed. It wasn't her business what her little sister did to self-soothe.

Lily was curled tightly around a balled-up blanket, and Emily picked up one of her sister’s arms and dropped it. The limb fell limply back onto the bed, confirming that the girl was fast asleep.

Impatience itched in Emily’s arms, her fingertips tingling with the faint sensation of need. She needed something, something she’d denied herself for years.

It was always too risky, before. Her parents were the protective type, hovering and worrying and irreparably normal. Emily couldn't bear it, couldn't bear the suffocating feeling of being so close to the only thing that had ever brought her true joy; close enough to touch, yet never quite enough to truly feel.

Emily had known long before the moment she plunged the knife into her father’s throat that she wasn’t normal.

“You forgot to take your pigtails out, Lily.” Emily murmured softly, running her fingers through the tangled brown strands of her sister’s hair. The pigtails were messily fastened, with all the imprecision of an eighteen-year-old girl who’d never done her younger sister’s hair before. That was always her mother’s job.

There were a lot of things Emily hadn't accounted for, without her parents there to help. In that moment, her sleeping sister snoring softly, she wondered if it was truly worth it.

After she gently extracted the hair ties from Lily’s curls, she decided it was.

“I’ve always thought you looked prettier with your hair down. Your hair’s so curly and thick, I wish mine were more like yours.” Emily continued, more to herself than to the unconscious girl. She ran her hands down from Lily’s scalp to her shoulders, pulling more and more of the blanket out of her death grip.

“I wish I were more like you.”

Emily’s hands wandered further down, fully removing the blanket from her sister’s grasp. The sleeping girl curled around the empty space that remained, grunting faintly. Emily froze for a long moment, but Lily didn't wake up, only turning over and splaying herself out with a long inhale. Emily released her bated breath, veins thrumming with adrenaline.

“So perfect and sweet and innocent and normal. I wish I were normal.” Taking advantage of Lily’s new position, she hooked a finger under the hem of the oversized shirt, pulling it up until Lily’s chest was exposed.

It wouldn't be right to refer to the girl’s chest as “boobs,” not yet. Her budding breasts were flat, inline with her stomach and shoulders, practically nonexistent.

Emily’s hands shook slightly as she ran tentative fingers over the slight mounds, brushing her fingertips over Lily’s tiny nipples as if handling porcelain. This was more than fragile, this was dangerous. It was everything Emily had always thought she couldn't have.

“Maybe I was normal before you were born. Did you know when you were two, I put one of my fingers in your mouth, and you started sucking on it? I think that’s when I knew I loved you. I love you, Lily. I love you, I love you, I love you.” Emily repeated the words like a mantra, still brushing her fingers over every inch of Lily’s exposed skin. Her hands ghosted over Lily’s throat, the urge to squeeze down on her tender trachea burning like lava under Emily’s skin.

“I don't get why I’m like this. I love you, but I want to hurt you. I want you to be innocent, but I want to ruin your pure mind.” Emily whispered, as if the words were more real because she spoke them aloud. Lily was still sleeping, her nearly naked form bathed in pale moonlight.

“I want to teach you about sex, I want to corrupt you, I want you to love me the way I love you. But… I can't. I can't hurt you like that.” Emily rambled, her tone still muted for fear of waking her sister.

“Maybe one day, I’ll try drugging you so you don't remember. I want to see you respond, I want to hear you, but I can't risk it… I can't risk you telling anyone. Then I’ll lose you, and oh, God, I can't lose you. Not after everything I did to have you to myself.” Emily’s voice cracked, and she bent over Lily’s sleeping form until she felt the ghost of the girl’s breath tickle her cheek. She hovered there for a long moment, fingers still circled around Lily’s breasts, before she pulled away abruptly.

“I shouldn't be doing this.”

Emily backed away from Lily’s bed, returning the blanket to lay on top of her sister before slowly stepping towards the door.

- Epilogue -

Lily had never spoken to Michael before now.

He was one of the big kids: high school, not middle school like some of the false “big kids” Lily was friends with. To most fifth graders, high schoolers were so far beyond their range of people that they wouldn't even attempt a conversation.

However, Lily was different. Lily was a big girl, and she was not afraid of high school kids. Especially when they had something she wanted.

“You’re awfully young to be looking to buy from me. Tell me, what does a girl your age need roofies for?” Michael squinted, sizing Lily up with a predatory gaze. Lily met his eyes unabashedly, tamping down her nervousness with a bright smile.

“It’s not for me. It’s for my big sister.” Lily replied evenly, her head tilted comically upward to meet Michael’s eyes. He scoffed, though not entirely unkindly.

“Damn. Your sister's got to be some kind of fucked up to make a little girl run drugs for her.” He crossed his arms as he spoke, but Lily could already see his resolve cracking. She pulled a wad of cash out from her pocket, smiling when Michael’s eyes widened slightly.

“Oh, no. My sister’s a good person. She loves me a lot. She’s just… not normal.”

Chapter Text

Lily came home from school buzzing with energy.

She pulled her house key out from her pocket and turned it carefully, swinging the front door open and stepping inside. She made sure to close the door behind her and turn the lock, remembering the countless days in the past few months Emily had lectured her on remembering to lock the door behind her.

Their parents had never cared much about the door being locked. Maybe Emily only started caring about it because of whoever had broken in and killed them.

Lily frowned, then cast aside any residual thoughts of her parents. The door was locked now. No point in going back to linger on it.

Emily would be upstairs in her room right about now, Lily knew. Emily was always in her room these days. Sometimes, Lily heard sounds coming from her room; the frantic clicking of a keyboard, or a woman making strange sounds through tinny headphones. She never paid much attention to the sounds; Emily was never forthcoming with an explanation, and Lily didn't want to ask.

Now, though, Emily’s reclusive habits would work in Lily’s favor. It provided her with the cover to sneak down the hall to her own room undetected, carrying a bag of white powder.

Lily knew, of course, that drugs were bad. She was a good student, she was even going to go to college one day, just like her parents did. And her parents always said that people who do drugs can't go to college.

But her parents weren't here right now, and Emily was, and something Emily had said stuck in Lily’s mind.

A lot of things Emily had said stuck in Lily’s mind, actually. She’d been half asleep, moments away from drifting into slumber, when she heard the familiar creak of Emily cracking her bedroom door open. Lily had stayed quiet and pretended to be asleep, expecting her sister to call her out to finish a chore she’d missed, or remind her to do an assignment she’d forgotten about.

But instead, Emily had started saying strange things, and touching her chest, and it felt strange, but not in a bad way. It felt good to hear Emily talk. She hadn't spoken all that much since the incident with their parents, and the longer she rambled, the harder Lily tried to pretend to be asleep, afraid that by waking up she would break the fragile spell and scare her sister away.

The drugs she bought from Michael were Emily’s idea, Lily reasoned. If Emily wanted to drug her, there had to be a good reason, even if she didn't quite understand that reason. Maybe, a small part of her hoped, it would make Emily start talking again.

The silence of the house rang familiar in Lily’s ears, and she missed hearing her sister’s voice.

She made it down the hall and into her room uninterrupted, as she’d expected. Inside the sanctuary of her bedroom, she pulled out the bag of powder to examine it up close for the first time.

She hadn’t dared to take the time to look over the substance before now. It had sat like a brick in her jacket pocket all day, filling Lily’s head with visions of it boring a hole through the fabric and dropping to the floor.

But now, she scrutinized it as if she was going to be tested on her knowledge. The powder was white, a fine grain all the way through, with no visible clumps or lumps. Lily didn't know what drugs were supposed to look like, but she figured that was probably a good thing.

It suddenly occurred to her that she didn't know how to take it. She cautiously opened the bag, licking the tip of her pinky finger and gently touching the powder. A fair amount of it stuck to her finger, so she pulled it out of the bag and sealed it again before examining the white substance.

She put her finger up to her nostril, inhaling deeply like she’d seen people do with powder in the movies she wasn't supposed to watch. The powder stayed resolutely stuck to her finger, and she frowned down at it as if it personally offended her.

She tried licking it instead, and her mouth was immediately filled with a sour taste that made her gag. Before she could back out or change her mind, she stuck the rest of her finger in her mouth and sucked off the rest of the caked powder, swallowing it harshly before it could touch her tongue.

It didn't work, and the vile taste invaded her mouth so violently she almost threw up on the spot. She reached blindly for the water bottle on her nightstand, chugging the cool liquid like her life depended on it. It helped the taste just slightly, and she was suddenly struck with an idea.

Setting the water bottle down, Lily crept outside of her room and into the kitchen with the bag of powder. She spotted her goal quickly, grabbing a tea bag and ceramic mug from a cabinet and turning on the sink. A kettle sat on the counter, taunting Lily with her lack of knowledge. She’d never been allowed to use the kettle before, instead having to ask Emily or her parents to operate it.

But Lily was a smart girl. She could improvise.

She put the tea bag in the cup and filled it with warm sink water. Testing the temperature with her tongue and finding it unsatisfactory, she put the cup in the microwave and turned it on for ten seconds. She wasn't sure how long in the microwave would heat the water, so she decided she’d start with a short time and work her way up.

Lily tested the newly microwaved water and it was still disappointingly lukewarm. With a disappointed frown, she returned it for another ten seconds, then fifty when that failed. She decided after taking the cup out of the microwave that the temperature was finally sufficient, and she raced back to her room as quickly as the cup of tea would allow without spilling it.

Finally content, she pinched more of the powder from the bag and dropped it into the tea. She’d seen that in movies too, someone drugging a drink. She didn't know if the drink had to be a grownup drink for it to work, though. She was hoping the tea was good enough.

After pinching more grains of white powder into the tea and stirring it briskly with her finger, she hazarded a small sip from the cup. The tea was intensely floral, the flavor of warm hibiscus masking the residual taste of nasty powder. Lily grinned at her own innovation, then drank a few more sips of the tea.

The acidic aftertaste became more and more apparent after drinking more of it, and Lily found that she couldn't stomach more than half the cup, but she didn't care. She could tell the substance was already doing its job, tilting her vision perilously sideways when she tried to stand up.

“Woah. Spinny.” Lily said to herself, her own voice sounding distorted and wrong in her ears. She giggled at the sound, then giggled again at the noise her laugh made.

She raised a hand to her face and waved it, thin lips curving into a dopey grin when the appendages spun in her vision. That was interesting. And fascinating.

She tried to stand up again, her legs buckling under her the second she got up. She fell to the ground, but it was really more like drifting, her limbs featherlight yet impossibly heavy on her torso as they dragged her to the floor.

The floor made a thudding sound that Lily didn't know where it came from, but it sounded funny anyways.

“Lily? You good?”

Emily’s voice thrummed through the hallway, floating into Lily’s room as the walls spun around her.

It didn't occur to Lily to respond, too transfixed by the dizzying feeling that accompanied every slight movement. The ceiling wouldn't stay still, and Lily narrowed her eyes trying to catch it in her gaze.

The door made a sound, and Emily appeared in the room as if by magic.

That was good. Emily was here, and that would make everything better.

“Emi… Emmy. Hi. Hi hi.” Lily slurred, reaching a hand towards the distorted figure hovering above her. Emily frowned, and maybe said something, or maybe not.

“Lily?? Is that… are those drugs??” Emily gaped, and Lily followed her aghast stare to where white powder was scattered across the floor in the shape of a comet trail, ending at the tiny, now nearly empty bag. Lily hadn't even remembered dropping that.

“Yeah. I did… I did drugs. But it’s alright, cause I’m still gonna… go to school.” Lily nodded, her speech still mostly incoherent, although it made no difference to her.

“Go to school? What are you talking about?” Emily asked.

“You know… like Mommy and Daddy say.” Lily reminded her. She forgot what she was reminding Emily of, and her sister didn't seem to know either, so Lily dismissed the thought.

Besides, Emily seemed lost in her own thoughts, and Lily poked her knee with a finger.

“Come on the ground with me. It’s so… ground.” Lily beamed, wiggling her fingers at her sister. Emily leaned down, at first it could’ve been to join Lily on the ground, but then warm arms wrapped around her torso and thrust her into the air, setting her down on her bed.

“Why did you do drugs, Lily?” Emily asked, a strained edge to her voice.

“Cause I wanted to.” It was half the truth. Lily did it because her sister wanted her to. She’d do anything her sister wanted her to.

Emily’s face froze in a complicated expression, one that Lily immediately forgot about when it transformed into a sugary soft smile.

“You wanted to because it’s what big kids do, right?” Emily’s voice was saccharine, like the sweetest of honey in tea, nothing like the disgusting white powder that Lily still faintly tasted.

“Uhh… yeah.” Lily responded, not remembering the question, but remembering that Emily probably wanted a yes. Emily’s approving smile confirmed that fact well enough.

“Do you want to learn about something else that big kids do, then?” Emily pulled Lily to a seated position by her shoulders, taking a seat next to her on the bed.

“Yeah!” Lily exclaimed, nearly toppling over immediately. She might have, if not for Emily’s strong arms clasped around her shoulders, keeping her upright. Her chest fluttered with some unidentifiable emotion. Her sister was here. Emily would protect her.

Drugs were weird and scary and a little bit fun, and Emily was here, and everything was perfect.

“Alright, but you have to swear on your life not to tell anyone. It’s something sisters keep a secret. They're not supposed to tell anyone else, because it’s special for just them.” Emily said slowly. Lily nodded eagerly.

“Sister secret! I’m good at secrets.” Lily puffed up her chest proudly. It was true, she’d kept secrets before. One time, her best friend Martha told her she liked a boy named Evan in the seventh grade, and Lily never told anyone.

“That’s right, sister secret. You pinky swear?” Emily held out her pinky finger, and Lily entwined it with her own with a solemn expression. Pinky swears were serious business, everyone knew that.

“Good. Do you know what sex is, Lily?” Emily asked, and Lily tilted her head, squinting her eyes.

“That’s when a boy and a girl make a baby. Right?” Lily guessed, and was rewarded with a nod from Emily. She beamed at the acknowledgement, positive that if she just answered Emily’s questions right, her sister would keep talking, and maybe even go back to normal.

Maybe, in a hidden part of Lily’s heart, she wanted Emily to think she was a big kid.

“Sort of. Two girls can have sex, too. And so can two boys.” Emily explained.

“Huh… which girl has the baby then?” Lily asked, perplexed. Emily snorted, quickly composing herself again.

“Neither. There’s no baby when two girls or two boys have sex.” Emily answered, that strange edge to her voice again. It was the same one from earlier, and from when she touched Lily’s chest last night.

Lily frowned, confused and head still spinning wildly.

“What’s the point then?” She tilted her head from side to side, enjoying the strange sensation of toppling over every time she did.

“Sex isn't just to make babies. It’s also for fun. It’s like… how playing a board game isn't just about the game, it’s about the person you’re playing with. You get to do something fun with someone you care about.” Emily explained, and Lily was only half listening but nodded along as if she was.

“And every big kid has sex. It’s just a part of being older.” Emily continued, and something clicked in Lily’s head.

“Woah. Do you have sex?” Lily asked in awe, and Emily giggled a bit before her face shifted back to normal.

“Yeah, I have sex. Not that often, but I do.” She answered.

“Do you have sex with boys or girls?” Lily asked. Emily smiled, a real, genuine smile.

“I have sex with girls. Personally… I think boys are gross. Don't you agree?” Emily whispered conspiratorially, and Lily returned a fervent nod. That much she understood. Boys were indeed gross.

“The thing is… I’m not that good at sex. That’s why I wanted to ask you for help. Maybe… I can practice sex with you, and then we’ll both get really good at it. You’ll be an expert at sex, then once you’re a big kid, everyone will be so impressed at how you got so good at it.” Emily’s voice had that edge again. Lily decided that it meant something was a secret. Emily touching her last night seemed that way too, like something that Lily shouldn't tell her friends during lunch.

“Yeah! I wanna help you practice!” Lily exclaimed, leaning forward with a lurch that made her vision start swimming all over again. Elation flooded her head along with the realization that Emily thought she was a big kid.

Emily looked concerned, though, despite her own proposition.

“I’m big enough! I promise!” Lily pouted, and Emily’s concern dissipated slightly from her face.

“I know you are. You just have to make sure you don't tell anyone, alright? It’s one of those things that only really close sisters with a special bond do, and other people don't get it.” Emily slowly removed her arms from Lily’s shoulders, and Lily didn't immediately topple over, so she didn't replace them.

“Duh. I pinky promised. So can we start already?” Lily crossed her arms. The effects of the drug were slowly wearing off, and the motion didn't make her entire vision sway.

“Right now?” Emily looked startled.

“Oh. Do you… not want to?” Lily asked uncertainly. Actually, the more she thought about it, the more nervous it made her. Everyone had always told her sex was for grownups only.

But it was Emily’s idea, and she was a big kid, so it was probably fine.

“No, no, I think starting now is a great idea. You’re thinking like a big kid already.” Emily praised, making heat rise to Lily’s cheeks. The compliment was rare from Emily, even when she was talking her normal amount.

“So what do I do?” Lily asked, her speech still slightly slurred. Emily paused for a long moment, then reached for Lily’s shirt.

“First, we both take our clothes off. Here, let me help you.” Emily finished pulling Lily’s shirt over her head, then tugged her own off in one motion. She was wearing a black bra, and Lily’s stomach twinged with envy. She had some friends who were already wearing bras, one of the most significant marks of being a real big kid. She didn't need to wear them yet, and no one had teased her about it yet, but she bet they would if they knew.

The faintly cool air made Lily’s nipples perk up, and she shivered slightly and wrapped her arms around her chest.

“All of them?” Lily asked, and her question was answered when Emily started to take off her bra. When she unhooked the bra, her boobs hung on her chest in a way that looked slightly strange. Lily had never seen boobs without clothes on them.

“Are they supposed to look like that?” Lily asked, pointing at Emily’s boobs tentatively. Emily laughed softly.

“Boobs look a lot of different ways. There's no wrong way for them to look.” Emily explained. Lily nodded sagely, absorbing her words.

Emily continued by taking off her pants and underwear, revealing her pussy dotted with wispy brown hairs. The brown hairs trailed up her stomach, tapering off near her belly button, and Lily ogled them curiously.

“Is it supposed to have hair? Mine doesn't.” Lily murmured, a little self-consciously.

“You start growing hair there when you’re a little older. You’ll get there soon, don't worry.” Emily reassured, and Lily frowned.

“I don't want hair there, it looks itchy.” Lily complained.

“It’s not itchy, don't worry. Now you take your pants off too.” Emily encouraged, and Lily unglued her eyes from Emily’s pussy for long enough to unbutton her jeans and slide them off.

As soon as she could, though, she was staring back at her sister’s vagina. She’d only examined her own once before, deeming it not interesting enough to warrant further attention. But now, she noticed how Emily’s pussy lips dangled slightly, sticking out a bit where her own did not.

“Oh, wow.” Emily murmured, and Lily suddenly felt her sister’s gaze sweeping over her nude body. She dropped her hands from her chest, determined to look cool and confident.

And even if she was a little bit nervous, she didn't want Emily to know that.

“Here, just follow my lead, okay? We’re gonna start with some kissing. People usually kiss before sex.” Emily leaned closer as she spoke, as if afraid someone would hear her talking.

“I know how to kiss! I kissed Mommy on the lips when she tucked me in.” Lily puffed up her chest proudly, making Emily let out a soft chuckle.

“This kind of kissing is different, trust me.” Emily assured, before cupping her hand around the back of Lily’s head and pulling it towards her.

Their lips met in a fumbled kiss, Emily’s lips pressing firmly against Lily’s limp ones, which she quickly corrected to be as tense as her older sister’s. Emily let out a small moan as they kissed, and Lily wondered if she should be making a sound too.

She did squeak in surprise when Emily’s hands trailed down her chest, squeezing and groping her small breasts enthusiastically. Lily was confused at what that was for, but it did feel weirdly good having her breasts played with. A strange roiling feeling curled in her stomach as she sat there motionless, Emily doing all the work of moving their lips together.

Emily’s lips suddenly broke off from Lily’s, instead trailing down the side of her neck and over her chest. She peppered chaste kisses all over Lily’s chest, finally settling on a spot and suckling at it for a few seconds. Lily gasped in surprise at the strange feeling. It reminded her vaguely of when she’d sucked on the skin of her arm just to see what it felt like.

When Emily pulled away, a faint red mark remained on Lily’s chest, and she peered down at it curiously.

“That’s a hickey. People like to leave hickeys on each other during sex.” Emily traced a finger lovingly around the mark, and Lily decided she didn't really like how it looked. It felt kind of good when Emily was making it, but now it was red and looked like a bruise.

“Can I put one on you?” Lily asked tentatively, and was met with a reassuring nod.

“Sure, you can do it right here. You just suck on the skin, and try to do it with a lot of force.” Emily tapped a spot on one of her breasts, and Lily leaned in close to it.

Lily kind of understood the motion, it was familiar from having to wrestle with the irritating bagged chocolate milk they gave her in the cafeteria. Sometimes she’d have to bite the corner of the bag off and suck the milk through the hole. Surely this was pretty much the same thing.

Lily latched onto the skin and sucked on it for a few seconds, the force making her lip slightly puffy. When she pulled away, there was a little red circle left on Emily’s skin, and Emily beamed with pride.

“That’s a really good one. You’re a natural.” Emily complimented, and Lily felt heat rise to her face as she grinned uncontrollably.

“Can I practice that more? I wanna get really good at it.” Lily asked, and to her disappointment, Emily shook her head.

“Maybe another time. Right now, there's something I want to… um, practice on you. Lie on your back for me, okay?” Emily asked, and Lily obediently got on her back facing her sister. She was a little bit confused when Emily grabbed her knees and pulled them apart, spreading her legs wide and exposing her bare vagina to her big sister.

“What’re you doing?” Lily asked, a little cautiously.

“It’s called giving head. It’s one of the ways to have sex. It’s when one person puts their mouth on the other person's vagina, or penis if they have one.” Emily described.

“But you don't like penis cause that’s boys.” Lily finished, and Emily chuckled.

“For the most part. There are girls with penises, though. I like those ones.” Emily amended, and Lily’s eyes widened like saucers.

“Can I meet one?” Lily asked, momentarily distracted from the fact that her pussy was bared in front of Emily’s face.

“I don't see why not. Anyways, hold still, okay?” Emily gave no further warning before diving her head between Lily’s legs, licking at her little pussy lips to spread them open.

“Woah… that feels weird.” Lily whispered while Emily continued to lick. Emily let out another moan, her eyes fluttering shut as she focused on her task.

“Ah!” Lily yelped when Emily’s tongue brushed over a certain spot, sending sensation shooting up her spine. Emily groaned at the sound, renewing her focus right on that spot.

After that, Emily centered around that same spot that made Lily make the sound, and she suddenly understood why Emily was making sounds before. Tiny whimpers and moans trickled from her mouth uncontrollably, and she brought a hand to her mouth to cover them. Her hand didn't do much to muffle the sounds, though. They were the only thing audible in the silent house, other than wet sucking noises from where Emily was eating her out.

Emily only got more fervent as she heard Lily’s moans, occasionally grazing her teeth against the spot to feel Lily’s thighs twitch in her grip.

Lily’s legs were shaking after only a few minutes, and that strange feeling in her stomach returned with a fiery passion, like a wave about to crest over.

“Ah… Emily, stop, it feels weird.” Lily whined, pushing Emily’s head away, but Emily maintained her death grip on Lily’s thighs, her mouth not separating from Lily’s pussy for even a moment. Lily shook from the overwhelming sensation, a pitiful mewl escaping her throat.

“Please, wait, it’s hurting— Aah!” Lily screamed as a wave of sudden bliss wracked her body, crashing over her like sudden waves of intense pleasure. Only then did Emily finally pull away with a satisfied smirk, wiping fluids off her chin with the back of her hand.

“Oh… oh…” Lily whimpered, aftershocks still coursing through her tiny body. Her head spun from the dizzying force of whatever just happened, and she looked at Emily pleadingly. Pleading for what, she didn't know.

“That’s called an orgasm. Didn't that feel good?” Emily asked, and Lily stuttered to regain her abiloty to talk.

“Oh… yeah, that was… good.” Lily answered breathlessly. She was telling the truth; even though it had hurt a little bit at first, it felt really good after that. Emily’s grin of satisfaction was worth it, too.

“It’s getting late, it’s past your bedtime.” Emily said a bit reluctantly, and Lily frowned. She was feeling a bit tired after that, actually, but she didn't want to admit that so easily.

“Is it really?” Lily complained.

“Yes, it is really. But… that was a good practice session. We’ll have to do another one sometime soon. Maybe if you go to sleep, we can do it again tomorrow when you get home from school.” Emily offered, and Lily immediately perked up.

“Ooh, okay! I’ll go to sleep!” She jumped off her bed, her legs still a little wobbly, and threw on a sleep shirt and jumped back under her blanket. Emily laughed a bit at her enthusiasm, giving her a kiss on the forehead.

Lily suddenly had a nagging thought that caught in her mind like cotton on a thistle.

“Um, Emily?” She asked slowly, just as Emily was about to leave the room.

“Yeah?” Emily turned back around, eyeing her curiously.

“Can you… sleep in my bed with me tonight?”

Emily paused.

“It’s just that… I get bad nightmares sometimes. I used to sleep in Mommy’s bed with her when I got them, but now… um. Yeah.” Lily trailed off into silence, staring down at her blanket instead of meeting Emily’s eyes. If she’d been looking up, she would’ve seen her sister’s gaze soften, a strange mix of anguish and sympathy on her face.

“... Yeah, of course I can.” Emily finally sighed.

“Wait, really?” Lily blinked excitedly, scooting to one side of the bed to make room for Emily.

“Of course. What else are sisters for?” Emily turned the room light off before shuffling into bed beside Lily, pulling a little less than half the blanket over herself.

Like Emily said, what else were sisters for?

- Epilogue -

Emily got up as soon as she was sure Lily was asleep, and got to work cleaning the spilled white powder from Lily’s bedroom floor.

As she worked it out of every crevice in the floor with a toothbrush, she mentally chastised herself for being so careless. Lily was only a girl, she couldn't be trusted not to tell anyone, even by accident. She shouldn't have left that hickey on her chest, even that was just asking to get caught.

Never mind the irreversible damage she was probably doing to her sister’s psyche, but she didn't even want to consider that fact.

It was already manifesting in Lily’s recklessness, she realized. Lily was almost certainly awake when Emily had been groping her the night before, and that's where she got the idea of drugs. Emily’s haphazard fantasy had consequences, whether she liked it or not.

But still… some part of it felt worth it to her. Tasting Lily’s juices on her tongue, making her little sister cum with her mouth… it was the truest euphoria she’d ever felt. Something told her now that she’d had a taste, she wouldn’t be able to hold herself back anymore.

After all… what else were sisters for?