A Sister's Curiousity

Story by Katya Saint Croix on SoFurry

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Attention: This is a little heads up before you begin reading. This story is a commissioned piece. I am -not- the author, but it was written for me. I'm posting it here on the behalf. Please leave your feedback here, and I will relay it to the author. Thanks in advance! Enjoy the story!

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Eiko rinsed the shampoo from her hair as she flattened her ears against her head. After a long day at the school's culture festival, it was nice to unwind in the bath. She stretched her arms and legs out giggling to herself. Now it was time for her favorite part, soaking in the tub. Before she could even finish stretching, a pair of hands grabbed onto her breasts and squeezed them repeatedly,

"Eiko-nechan is starting to grow some here!" Kiku said as she starting rubbing her hands in circles on her sister's chest. Eiko's face turned bright red as she curled up into a ball on the stool,

"Kiku!! What're you... when did... why did you do that nya!" Kiku giggles and draped herself on Eiko's shoulders,

"I got you to nya~!" Eiko huffed and growled softly at her sister,

"Fine, but you only get one slice of my next apple pie." Kiku giggled again poking Eiko in the nose,

"Aw, don't be all huffy Ei-chan. I came to help you out!"

"I'm already done washing myself Ki-chan. I was just about to get into the tub." Kiku ran her finger down along her sister's spine all the way to her tail.

"Didja wash your back?" Eiko shivered from her sister's touch and uncurled herself from her ball shaking her head, "Well let your little sister take care of everything for you, just relax ‘kay?" Kiku said excitedly as her poofy tail swished back and forth,

"This is kinda embarrassing Ki-chan..." Eiko whimpered as she grabbed onto her tail and rubbed the tip in between her thumbs.

"Why though, we've seen each other naked a whole bunch of times Ei-chan." Kiku said as she rubbed the washcloth up and down her sister's back.

"We aren't kids anymore Ki-chan, it just feels weird to have you in here is all." Kiku grabbed the showerhead and began rinsing off the soap,

"Oh you're just playing shy again Ei-chan," Kiku spread open Eiko's legs giggling again, "You make it seem like I've never seen your privates before. Ooh, there's a bunch of soap down there still, here I'll wash it off for ya." Before Eiko could fully protest or react, Kiku held the showerhead in between Eiko's legs to rinse her off. Eiko meowed loudly and closed her legs around the showerhead, which was still spraying directly onto her privates. She continued to shiver and meow as Kiku stared at her sister, confused about her sudden mood change.

"Ei-chan, what're you doing?" Kiku said, not trying to move the showerhead at all,

"K-Ki-chan...m-move the s-showerhead... p-p-please." Eiko stammered out as her whole body shivered visibly. Kiku responded to her sister's plea after watching her for almost another full minute and draped herself on Eiko's shoulder's again.

"What was that all about Ei-chan, you got all twitchy and kitty-like?" Eiko took several shaky breaths and flattened her ears against her head as she shot her little sister an evil glance,

"Next time don't wait to move it when I ask... and I was like that because the way the water sprays, it feels really...um...good when it sprays on your privates." Kiku sat down on the floor of the bathroom spreading open her own legs and began to paw and poke at her own vagina.

"So If I do to me what I was just doing to you...it'll feel good?" Eiko quickly hopped into the tub before Kiku could do anything else to embarrass her,

"Why not try it for yourself Ki-chan?" Eiko said sinking up to her shoulders in the hot water. Kiku pulled herself up onto the stool in front of the showerhead and positioned everything as it was before and turned the water back on. Eiko looked over at her sister who began to whimper and fidget on the stool as she moved the showerhead around in between her legs.

"T-this tickles Ei-chan...but in a weird way. It's making me feel weird." Eiko giggled leaning on the side of the tub as she continued to watch her sister,

"Yeah, I've done it like that a few times before, but it feels even better when you play with it with your hand or other things in bed." Kiku shivered slightly and quickly turned off the water, panting quietly,

"How do you do this in bed Ei-chan?" Eiko turned bright red again, realizing she just admitted to her little sister that she masturbated,

"Umm...i-if I tell you, you have to promise me you won't tell mom and dad about it." Kiku smirked shaking her head, much to Eiko's dismay.

"You're not getting off that easy; you hafta show me what you do. If you don't, I'll tell mom, dad, and your whole class at school!" Eiko sank into the tub sighing heavily as she turned an even brighter shade of red. Kiku had a knack for getting Eiko to do anything she wanted, no matter what. Kiku continued to stare at her sister waiting for a response as her tail slowly swayed back and forth,

"Alright Kiku...but you can't tell anyone about this, ever!"

"Okay, I promise! Can you show me right now?" Eiko shook her head,

"If we stay in here to long, mom and dad will wonder what we're doing and check up on us. You can stay in my room tonight; I'll show you there, okay?" Kiku leapt from the stool into the tub and pounced onto her sister. After several minutes of happy giggling and splashing the two girls came out of the bathroom to dry off,

"Ooh, Ei-chan, let me wear your pajamas tonight! You could wear mine then!" Eiko nodded as she began to reach for her panties, which were promptly snatched up by Kiku who started putting them on,

"We'll trade everything tonight. It'll be fun, I promise!" Eiko blushed as Kiku tossed her heart-print panties to Eiko. Eiko struggled to pull the small panties up onto her hips and after getting them all the way on, she tried to pull at the crotch of the panties so they weren't pressing into her, but with little success. In contrast Kiku was trying to find the best way to keep her sister's panties up on her waist without them falling off her small hips. As Kiku put the pajama pants on, she ran into a similar problem, even with the tie pulled in as far as she could, the pants hardly stayed on, and her feet didn't even come out of the legs. The button down shirt sat on one of her shoulders, while the other and part of her arm were exposed.

Had Eiko not been seen by anyone else but her sister at this point, she would have died from embarrassment. Kiku was a full six inches shorter than her and always insisted on wearing nightgown pajamas. Eiko was barely able to get the nightgown on and where it usually almost ended at Kiku's knees, Eiko was trying to pull the nightgown down more so the crotch of the tight panties weren't constantly exposed. She also felt like she couldn't take a full breath or move right with as tight as the nightgown was on her chest and shoulders.

Kiku then raced out of the bathroom, holding the pant legs up so that she wouldn't trip on them on her way to Eiko's room,

"Mom, Dad, I'm sleeping with Ei-chan tonight!" Eiko chased after her, hoping that her parents were busy with something else and wouldn't see the both of them in each other clothing,

"Alright sweetie, don't keep your sister up to late again."

"I won't, I promise mom, love you night!" Kiku yelled as she ran into Eiko's room and leapt onto the bed,

"Goodnight mom and dad, we love you!" Eiko called out as she rushed into her own room and shut the door behind her. Eiko leaned up against the door taking as much of a deep breath as she could as she watched her sister struggle to keep the pajamas on as she bounced on the bed,

"This is only a one time thing Ki-chan, okay?" Kiku plopped onto the bed and tried to pulling clothing up more,

"Only if you promise to make me an apple crumble" Eiko didn't even protest and simply nodded in response. She was embarrassed enough as is that she was going to masturbate in front of her sister, she didn't want to have to do a repeat performance. Kiku clapped happily as Eiko climbed into bed with her and the two girls crawled under the covers and faced one another. Eiko clicked on a flashlight so they could see and Kiku stared intently at her sister with a huge grin on her face,

"What other kind of things can you do that makes it feel good down there Ei-chan, do you use stuff like you do in the bath?" Eiko shook her head and tried to sit with her legs crossed, but the panties dug into her to much. She squirmed her way out of them, trying to keep herself under the covers,

"The only other thing I use sometimes is my panties...I'll rub it with my finger outside of my panties sometimes." Kiku nodded watching as Eiko stripped off the nightgown as well, unable to take how tight it was on her. After taking a deep breath and thinking ‘why am I doing this in front of my little sister', Eiko spread her legs open and began to trace her finger up and down the length of her vagina.

"Is that how you start outside the shower Ei-chan? Can I try doing that to myself too?" Kiku whispered staring more intently at Eiko.

"Only if you wanna play with yourself too, it feels really good when you finish though." Eiko said as she pushed her middle finger inside of herself with a contented whimper. Kiku slipped her hand inside of the pajamas and imitated her sister, keeping her eyes locked on her sister. Eiko giggled to herself as she watched Kiku hold out the pajamas and her hand moved back and forth inside the oversized pajama pants.

"Only try and put your finger inside there when it's wet." Eiko said as she moved her finger back and forth slowly. Kiku's attention went from her sister to her own body as she touched and poked at a part of her body she'd never thought of doing anything to before. While she was enjoying the new sensations, the excitement wasn't coming as fast as it did before. She rubbed her finger all around until it brushed up against a very sensitive spot. She squeaked and jumped as a sudden spark of pleasure shot up her spine. She shivered and giggled as she began to rub the spot more,

"E-Ei-chan.... T-this spot right here feels r-really nice." Eiko didn't stop pleasuring herself as she leaned forward to look at where her sister was touching,

"Which spot Ki-chan?" Instead of telling her Kiku reached for her sister and pressed her finger up against the same area as she was touching.

"Here, see? It feels weird when I touch it, but in a really, really good way." Eiko squeaked and meowed in surprise as her sister started touching her privates. Eiko stopped touching herself and moved in closer to her sister, enjoying this new feeling of her sister pleasuring her. Eiko started to pant softly as her sister continued to rub her finger on a spot she'd never played with before. She felt a little odd as well, since having her sister touch her felt even better than when she did it by herself.

After several minutes of quiet panting and moaning Kiku abruptly as her whole body shuddered as she let out a high squeak. Kiku panted and grabbed the flashlight and shone it down inside of the pajama pants. Eiko whimpered, not wanting her sister to stop, she looked inside of the pajamas along with her sister panting still,

"Why'd you stop Kiku? I really liked what you were doing." Kiku took a deep breath to try and calm down a little,

"My panties started feeling really wet, so I thought I was peeing. Plus I felt really...different. So I wanted to see what was happening down there." Eiko giggled pulling the pajama bottoms off of her sister. Kiku squealed happily and pretended to fight against her as she wiggled out of the oversized pjs. Eiko took the panties and sniffed carefully at the wet spot on them,

"You weren't peeing Ki-chan, this was something different. It only happens when you play with yourself down there." Kiku started pulling at the nightgown Eiko wore, grinning and giggling at her until she was naked as well. She pinned Eiko down on the bed and sat on her stomach, her tail swishing back and forth under the bed-sheets,

"Did that happen to Ei-chan when I was touching her?" Eiko tilted her head a bit looking up at Kiku, "The wet stuff! Did it come out of you too?"

"Oh! No, that didn't happen to me yet Ki-chan." Eiko could see where this was going and opened her mouth to protest, but was quickly stopped,

"I'll take care of it for you Ei-chan! Then you hafta do it to me okay?" Kiku squirmed down on the bed spreading open Eiko's legs and immediately tried what she was having trouble doing to herself. Kiku covered her mouth as she squeaked loudly as she felt Kiku's finger slide up into her,

"Wow, I couldn't get my finger to slide in like this on mine. You sure you didn't yet?" Eiko shook her head, keeping her mouth covered as she fidgeted on the bed. Kiku watched her finger sliding in and out of her sister and despite her sister's reactions decided that she should do more. Her other hand played with the spot she had found earlier, much to the delight or her sister,

"There's even more now Ei-chan. This much didn't come out when I did it..." Eiko blushed and propped herself up onto her elbows to look at Kiku, who grinned back up at her,

"N-no, there'll be even more in a little bit. Just don't stop until I s-say so okay, Ki-chan?" Kiku giggled happily and resumed fingering her sister and watching very carefully.

Eiko bit her lip and fidgeted more as she stared at Kiku. For almost a year she had been doing this by herself and it normally would take her around fifteen minutes before she would climax. Only five minutes had passed and she already was trying to hold back her climax. She moaned out a nya and shifted her hips back and forth, trying to hold herself together,

"Ei-chan, stop moving around so much, you're getting really tight around my finger and it's getting hard to keep doing this." Despite the request Eiko couldn't stop moving around; she now held her breath as she tried to keep back her climax,

"K-Kiku... I-I'm c-c-cumming..." Kiku could tell by the look on her sister's face that it was time and moved her finger faster, seeing even more of the ‘happy juice' coming out of her sister. Eiko shuddered and twitched in ecstasy and fell back onto the bed, unable to keep herself up any longer. Kiku stared as she felt her sister squeeze tightly on her finger and Eiko grabbed a pillow to muffle her cries of pleasure. Eiko quickly grabbed both of Kiku's hands to hold them still,

"You...needta stop...after that happens....Ki-chan." Kiku looked up at her sister tiling her head in confusion,

"You keep on twitching and making noises like you're really happy. Don't you want me to do more?" Eiko panted softly as Kiku freed her hands and sniffed at the clear, thick liquid the covered her fingers. Eiko flopped onto her back to catch her breath and pulled the covers back off the two of them, feeling very hot now. Kiku pushed the comforter off of the bed and plopped herself beside her sister, still sniffing and playing with the goo on her fingers,

"Ei-chan's happy juice smells different...and good." Kiku licked at her finger cautiously,

"Kiku, what are you doing?!" Eiko said as Kiku started licking more of the liquid off her fingers,

"It tastes funny too... Ooh! Eiko make my happy juice come out! I wanna see what mine tastes like too!" Eiko sighed softly and sat up in between Kiku's legs, which she happily opened up as wide as she could. Eiko stared down at her little sister, who waited eagerly for her turn,

"Wanna try something different Ki-chan?" Kiku propped herself up on her elbows, grinning happily at Eiko,

"What do you wanna try, will it be really fun??" Eiko positioned herself overtop of Kiku and slowly lowered herself down on top of her sister, gently pressing her hips down onto her. Kiku cooed softly in response and looked up at her sister, confused as to what she wanted to do,

"I've tried this on my pillow a few times before; I wanna see what it feels like with you though Ki-chan." Eiko giggled softly as she rolled her hips up against Kiku,

"So...Ei-chan wants to rub our privates together?" Eiko nodded rolling her hips into Kiku again, who matched her motion back, giving them both a both a jolt of pleasure,

"Yeah, I really like doing it to my pillow; so this should feel even better with you Ki-chan." Kiku and Eiko began to slowly move their hips into each other, finding a steady rhythm with each other to keep up the excitement. Both girls moaned softly and shivered in delight as they felt the full length of their vaginas met each other.

Kiku wrapped her arms tightly around her sister and squeezed tightly as she felt herself and her sister growing increasingly wet as they continued to slowly grind against one another, her whole body feeling completely different from when she was playing with herself earlier. She looked up at her sister, who had her eyes shut tightly and was biting her lower lip,

"E-Ei-chan... your happy juice is coming out... I c-can feel it." Kiku said, trying to keep herself from climaxing herself. Eiko opened her mouth to respond but was only able to moan out a weak meow. Kiku squeezed Eiko tighter, moaning softly herself, as she pressed herself up against her sister harder, not able to hold back the flood of ecstasy any longer,

"K-Ki-chan...I...I'm c-cumming!" Eiko managed to squeak out in between moans as she pressed into her sister at the same time she did, the two girls shivered and moaned in delight as orgasms overtook their young bodies. They both held tightly onto each other as the pleasure peeked, and slowly began to subside as both sisters passed out, very, very happy.

Eiko woke up several hours later, still laying on top of her naked little sister. Kiku murmured and shifted underneath her sister's weight, giggling to herself as she slept with a huge grin on her face. Eiko slowly and quietly rolled off of her sister and rubbed her eyes as she sat up on her bed. She stared into the darkness of the early morning, remembering everything she had done with Kiku the night before.

She spread open her legs and traced her finger around her vagina, blushing brightly as she felt how wet and messy it was. Feeling curious, she gathered up some of the clear goo from on her vagina and licked at it carefully,

"It tastes funny doesn't it Ei-chan?" A small voice said from beside her. Eiko jumped and closed her legs quickly looking over at her sister who was still sprawled out on the bed,

"Wanna try some of mine Ei-chan? I think there's still some down there." Kiku said rubbing her eyes. As timid as Eiko was normally, she wanted to take her sister up on this offer. She reached over to Kiku who spread her legs open for her. Eiko slid her finger into Kiku wiggling it around for a minute before slowly pulling it from her sister again. Kiku stared at Eiko happily as she sucked her finger clean of Kiku's own ‘happy juice'.

"Its kinda salty...and sweet too..." Eiko said licking her lips clean of any trace that may have remained. Kiku giggled and jumped onto her sister, snuggling her as she got on top of her sister and pinned her shoulders to the bed. Eiko giggled in response and grabbed Kiku's hips tightly,

"Can we please not make this an only one time thing Ei-chan?" Kiku whimpered as she gave her sister puppy dog eyes and an overly cute face. Eiko blushed brightly,

"Well...maybe every once and awhile we can. This was a lot more fun than I thought it would be..." Kiku changed her expression to deliriously happy and hugged her sister tightly kissing her cheek,

"Thanks soooo much Ei-chan." Eiko hugged her sister back and took a deep breath. As long as they could keep it a secret, she would be alright.