Julia was born eighteen years ago alongside her twin brother, elder of two minutes Julius.  Perhaps because they were twins they shared the trait of both being king cheetahs, their spots larger and more blotchy, as well they had stripes along their back and their fur was a bit longer and softer than that of a normal cheetah.

Their parents, their mother especially, was incredibly overprotective of Julia; Julius was sent to public school like a normal child, Julia was home-schooled.  Julius was given a normal childhood but Julia was restricted, she could only read books, she wasn’t allowed on the internet or even allowed a cellphone, though at least she didn’t know what she was missing.  Of course because of this Julia was lacking knowledge in several areas.

Of course the younger feline was lacking in many social aspects, though her mother tried bringing her to church and other similar gatherings but interacting in that manner wasn’t quite the same as interacting with random people.  Julia also completely lacked sexual knowledge, she had her first heat at sixteen but her mother refused to explain it.

At the current day Julia woke up groggy after staying up too late reading a book and she’d slowly head to the bathroom, feeling like she really had to pee.  She was so out of it she didn’t even notice the sound of the water coming out of the shower, and when she opened the door her brother stood there completely nude.  It’s not like an accident like this had never happened before, but this was the first time she noticed how big the thing was between his legs.  She had asked about it before and like with many things she was denied explanation.

Julius was just getting ready for his morning shower, he had some morning wood so he was considering rubbing it out once he got in, but the second he took off the last of his clothes his sister suddenly walked in, he could tell she was staring right at his hard cock and he couldn’t help but blush.  Julia’s curiosity meanwhile was overwhelming, she really wanted to know what it was, “What.. IS that?” she’d simply ask.  Of course he had been instructed by his parents not to answer that sort of question, but since when did a teenager follow all of their parents directions?

“It’s a cock” he’d reply simply, not thinking too much about it, but when her next question came he’d suddenly gulp.  “Can I touch it?” Julia inquired.  Now Julia was incredibly attractive, if she went to school like him she’d probably be popular based on her looks alone, even though she was his sister the fact they led such segregated lives gave him an odd affection toward her, a rather non-familial interest.  “Go ahead, just don’t be rough with it.” he eventually replied.

The female cheetah stepped closer to him, wearing only her pajamas at the moment, and just lightly poked at it, the cock wobbling back and forth in reply and making her giggle a little; then she’d suddenly grab at it, but the moment she did her instincts kicked in.  It felt so hot within her grasp and it sent an unfamiliar sensation racing through her body, her cheeks going red with warmth and she could feel a strange desire focused between her legs.

However she didn’t get long to think about it, as the both could suddenly hear their mother, “Julius, don’t take too long in the shower!” she’d yell out, prompting Julia to suddenly let go and flee the room.  Julius closed the door behind her and ended up masturbating twice in the shower that morning.  He had been with women before, but it was just casual sex and he had never really felt much emotion toward them, but just having his sister grabbing his cock like that got him more aroused than he had ever been, and he didn’t know what to do about it.

Julius had school that day, and aside from his head being in the clouds the day was spent as normal.  Julia however had a rather unusual day by her standards.  After completing her own studies for the day, a task that didn’t take long, she simply relaxed in her room and started reading.  It didn’t take long for her to remember the feeling from that morning though.  She had always been told never to touch between her legs except for cleaning up urine or blood, it was sinful, but her body was covering up the fear of sin with pure desire, her curiosity helped too.

She set her book aside and slowly crept her hand lower.  She was wearing some simple shorts and a t-shirt, as well as plain panties and a bra, and her hand slowly ran down along her belly til it reached her shorts, then she’d just slowly slide her hand beneath them, but over her panties for now, the feeling that she was doing something wrong was still there so she couldn’t bring herself to touch herself directly.  Eventually though the tips of her fingers pressed to her slit and she’d shiver softly. 

It felt so different now, compared to when she touched it to clean up, there was an odd sensitivity.  She felt wet, but she didn’t have to go to the bathroom, it confused her, but that pleasure coaxed her further.   Slowly she’d begin rubbing up and down along her lower lips, even through that thin layer of cloth it felt rather good, and she’d bite her bottom lip as she started rubbing a little more firmly.  Her hips started moving on their own, or that’s what it felt like to her, bucking against her hand and pushing her fingers a little into her pussy, making her suddenly yelp from the new sensation.

She’d pull her hand back, then shoved it beneath her panties now, she needed to feel more.  The warmth of her soft fingers pressing against her made her moan out softly, then she’d start pushing those fingers into her folds, warmth surrounding those digits, which in turn started pressing along the sensitive flesh within.  She’d start rubbing her fingertips along her front wall as that seemed to feel the best, slowly going back and forth along her folds.  However as she brought a second hand to try and help her fingers suddenly brushed over her clit, and that sudden pleasure pushed her the edge and forced her to chirp.

Her body quivered as her legs suddenly closed tight, keeping her hand buried inside her, then she could feel herself letting out something, as if the need that was building up inside her was being flushed out in liquid form, getting her shorts and panties quite wet.  However that chirp had her mother coming up to check on her, “Julia, are you alright?” she’d question, and the younger feline just buried herself under her covers.  When her mother came in to look at her she’d look back as if sleepy, “What happened?” her mother asked, “Mm, I took a nap and had a nightmare” Julia lied, feeling even more guilty now.  There was no way she could tell her mother what had actually happened though.

That night Julius was laying in bed awake, debating masturbating himself, not that he knew Julia had.  It was fairly late and his parents were asleep, so he started unzipping his pants, only for his twin sister to suddenly pop out from hiding at the foot of his bed.  He almost yelled in surprise but managed to stop himself at the last second.  His zipper was open but he still had his boxers covering his flaccid rod.  “Hey… can I see your cock again?” she’d request.  Julius had to pause at this, it was an incredibly arousing thought, but he wasn’t immune to the whims of society, people looked down upon things like this, not that Julia knew, she didn’t know anything about sex.

“Go ahead” he’d reply, thinking ‘fuck it’.  He didn’t care enough about what society frowned upon, at least not enough to turn down a gorgeous feline from touching his cock.  Julia slowly crawled over him and moved her hands to undo his pants, she was in her pajamas herself, a button up top with easily removed pants, they were pink and looked cute on her.  Once she undid his pants she’d tug them down along with his boxers, eventually revealing his cock, which was still mostly soft.  “Why is it small now?” she’d ask, tilting her head.

Julius just sighed, wondering how much he might have to explain to her, “It changes shape when it’s not in use” he’d simplify, “Try rubbing it” he’d suggest.  The female feline wrapped her soft furred digits around his shaft and began slowly stroking up and down against it, causing it to slowly swell in her grasp and prompting a light moan from the older cat.  “It feels good, doesn’t it?” the younger sibling mused aloud.  “How did you know?” Julius asked in reply, were it anyone else he wouldn’t bother asking such a thing.

“Earlier I… touched myself… down there.” she’d reply with a deep blush, before letting out a light gasp as she felt his cock stiffening quite a bit, Julius quite aroused at the thought of that.  “Yeah, it feels good, especially if you lick or suck on it.” he’d confirm, and hinted at what he’d like her to do.  She took that hint, blushing a little still, and leaned in to let her soft tongue slowly slide over the tip of his cock.  The sight of his sister licking his cock almost made him feel like he was going to cum on the spot, she was just so hot, and the taboo of it was starting to make it feel even more stimulating.

He just let her work for now, and she’d just treat the tip like a lollipop at first, licking repeatedly at the broad tip, before slowly wrapping her soft lips around the head of his cock and sucking on it.  She could feel his pre, though it didn’t seem to have a taste, and she just assumed it was normal since he said nothing.  She continued stroking over his shaft while she sucked on his tip, jerking it into her warm maw as he moaned out even louder.

He had been thinking about this sort of scenario all day, so once it finally came true it wasn’t taking him long to begin throbbing in her mouth, getting close to his climax.  “Sorry about this” he’d murmur, before moving his hands to the back of her head, then just thrusting up while pulling her down, thrusting tight into her throat.  Her eyes watered and she’d gag on his cock, her throat repeatedly clenching around his cock now, and that easily pushed him into orgasm.  He let out a deep moan and just let her throat milk out his cum, she had no choice but to swallow it, making those tight walls pulse firmly over his rod before he ran dry and eventually pulled back.

Julia was gasping heavily once her throat was free, she didn’t even get to take a breath before he forced himself into her throat.  “That was.. mean” she’d cry a little.  “I’m sorry, I’ll make it up to you.” he’d reply, fully committed to his illegal task now.  He caressed her cheek, “I promise, I’ll make you feel so good you’ll forget all about it.” he’d add, speaking sincerely, also not wanting his sister to get upset and tell their parents.  “A-alright” she’d agree, having caught her breath now.

The male suddenly grasped his sister by the sides and pushed her back onto the bed, her head on his pillow to help her relax, making her gasp softly at being moved like that.  Then he’d begin undoing the buttons along her top, making her blush deeply.  She could feel what they were doing was wrong, and she could tell he knew too, but she wanted to feel good, so she let him do what he promised, or so she hoped.  Eventually the milky white fur of her belly was revealed, followed by her breasts.

He just spread that top open, not even bothering to remove it entirely, then moved his hands to gently grasp at those soft mounds, coaxing out a light moan from her.  He slowly started massaging that sensitive flesh, letting his warm fingers sink into it while she mewled with pleasure, her nipples slowly stiffening as her excitement grew.  Eventually he’d bring his fingers up to gently squeeze those pink peaks, and Julia just arced her back, pressing her breasts further into his grasp.

He moved slowly and gently, pinching at her nipples and tugging at them, giving light twists back and forth as well, each movement making her moan out a little louder than the last, and he soon had her panting out softly with lust.  Then he’d shift back and hooked his fingers beneath her pajama bottoms and panties as well, then slowly tugged them down. Eventually he tugged them off entirely, leaving her lower half bare.  

She blushed deeply, and at first as he began to spread open her thighs she’d resist, however he was keeping his word to make her feel good so she stopped and let him spread her wide.  Her slit was already dripping with wetness, she was expecting him to use his fingers next, like she had used her own, but was shocked when he leaned in with his head.  His first lick simply went over her pussy, making her moan out softly, then he began playfully twirling his tongue around her clit and she’d let out a sharp moan, clutching her hand over her mouth to quiet herself though.  That was all it took to get her to climax, her body shaking with pleasure as her hot essence began to pour out.

However he wasn’t done with just that, he pushed his tongue between her lower lips and eagerly lapped up her cum, and she’d just grab a pillow and wrap it around her face to muffle her moans because she couldn’t stifle them with just her hand anymore.  That tongue repeatedly teased along her sensitive opening before she stopped cumming, then he’d just plunge his hot tongue into her folds, forcing her to moan out once more.  He pushed his tongue in along her lower wall, letting her feel the soft underside of his tongue, then he curled up the tip and hungrily slurped up her juices, sucking on her folds as he did.

Julius brought a free hand up to her clit and gently flicked two fingertips back and forth over it as his tongue worked, soon bringing her to a second climax, giving him even more to drink, his mouth dripping with her wetness.  After that second time he’d pull up, switching his hand and mouth, driving his middle and ring fingers deep into her folds, grinding his fingertips right up along her front wall as he wrapped his lips around her clit.  With that firm thrusting into her and his sucking on her delicate pearl it wasn’t long before she was driven to a third consecutive climax, by this point she was just screaming with pleasure into her pillow, and this time when she came it squirted out onto his stomach.  He’d finally pull back, then just slowly moved over her now.

She thought he wanted to cuddle, and partly that was true, so she removed the pillow from her face and just looked up to him with a lustful expression, years of being pent up being released all at once.  She was surprised when he kissed her though, his tongue aggressively pushing into her mouth, but she found herself pressing her lips to his in reply and gently swirling her tongue against his.  Then he’d press his cock right up against her pussy, his shaft grinding between her lower lips, not pushing in, just sawing back and forth over it at first, making her moan out into the kiss.

Something clicked in her head as he did this though; she may have never been taught about sex, but she realized at this point that their bodies were designed to fit together like this, though for what purpose she was still unsure.  “Are you gonna stick it in?” she’d ask softly as she pulled back from the kiss, and he’d nod slowly “I am.” he’d reply simply.  Next he slowly drew his hips back til the broad tip of his cock was pushing up against the entrance to her folds, between her lower lips but not quite into her lewd tunnel just yet.

Finally he pushed into her, spreading open her soft walls, giving her a new almost incomparable feeling.  Compared to a couple fingers or his tongue his cock was much bigger, it fit inside her snugly, and in a way it just felt right to her.   He made sure to angle his thrusts so that his mushroom shaped head rubbed along that sensitive wall of hers, though thanks to how tight she was around his shaft he’d be rubbing along every inch inside of her.  Inside of her was like being surrounded by hot velvet, but even softer, squeezing firmly around him and twitching firmly.  Between how tight she was and her plentiful wetness at this point, he’d force out her excess juices with a lewd squelch as he hilted himself into her.

After he pushed himself in to the hilt he’d start eagerly pumping into her, his thick rod squeezing along her soft walls, making her moan out sharply with each back and forth movement.  He covered her mouth with his hand just to help keep her quiet, and she’d look up to him with a lewd expression and began licking his fingers, that sudden teasing making him throb firmly inside of her.  His other hand moved to her chest, squeezing her breast firmly, tugging and twisting her nipple at the same time.  She’d cry out with pleasure, tensing up around him, her walls clenching tight and making him moan out a bit louder as well, though he managed to keep his voice fairly low overall, not wanting to get caught.

Even though both had already cum at least once, they were quickly on their way to another climax, Julius because his sister was so damn cute, and being inside of her was like a dream; not to mention how hot and tight she was, it almost felt like her pussy was made for his cock.  Julia on the other hand never had a cock in her before, and til today never even experience sexual pleasure, so despite her numerous earlier climaxes having her skilled brother thrust in along her sensitive spots quickly spiked her pleasure.

Julia came first, her soft walls closing in tight around him as she shuddered heavily.  She wrapped her arms and legs around him, her legs forcing him in deep as her clawed fingers dug into his back, so much so that as she moaned out into his hand and came there’d be red lines across his back as she raked over it.  As those silken depths closed in around his cock he could feel them pulsing, milking out his seed far better than her throat ever could, rippling over his cock from the base to the tip, and since he was already close he couldn’t take it.  He leaned in and roughly bit her neck to muffle his own loud moan, his cock throbbing heavily as his thick cream pumped through his cock, letting out strand after strand into his little sister’s cunt.

They stayed like this for a good while, they had lost track of time so it likely felt longer than it really was, then eventually Julius just pulled back and collapsed next to Julia.  Both of them were panting out quite a bit, but eventually Julia knew she had to go, so she’d clean up using some nearby tissues, then quickly re-dressed and snuck back out, but before she left his room she gave her twin brother a longing glance, “Let’s do this again.” she’d whisper, then left.