>You blink at her
>Did your sweet little sister really just ask that?
>Immediately, she throws up her arms
>"You know what, nevermind! I should have just asked Rarity to begin with!"
>You store that mental image for later
>But as Sweetie Belle turns to go, you throw out an arm to catch her wrist
"Wait, Sweetie,"
"I was just a little surprised."
>And why wouldn't you be?
>She was barely half your height a couple of years ago
>Now she comes up to your chest
>Has her own... chest
>And is curious enough about kissing that she's willing to ask her brother or sister to practice with her
>And let's be real here
>You'd have to be blind to turn that down
>"Does that mean you'll do it?"
>It's strange
>She sounds... genuinely excited
"Yes, Sweetie, I will,"
>She makes a little squeaking noise that's half a cheer and half a scream
"... but on two conditions."
"First of all, if either of us is ever uncomfortable, like if it gets too weird or whatever, we just say so and stop straight away."
>She rolls her eyes
>"That one's obvious!"
>You cut her off
"And second of all, Rarity must never -ever- find out."
>"About what, darling?"
>Rarity pokes her head around the door, and you both pale immediately
>"Nothing!"
"Nothing!"
>Your older sister narrows her eyes at your synchronised display, and slowly moves on, not breaking eye contact until she's past where your room opens onto the landing
 
>Once she's gona, Sweetie turns back to you, full of nervous energy
>"So? When can we start?"
>You ponder for a moment
>You aren't exactly that busy
>Hell, if it meant you get to kiss a cute girl, you'd shuffle your schedule like no tomorrow
"Whenever you like, hones-"
>And her sweet little lips are on yours
>Before you even start to kiss back, though, she's broken off and run away blushing
>You turn back to what you were doing before she burst in, and half expect her to forget all about it
 
>But she doesn't
>The first few times she comes to you, you just share pecks like the first
>Sometimes she kisses you, and sometimes you kiss her
>Each time she seems quite overwhelmed, turning beet red and stammering if not straight running away
 
>But as time goes on, your practice does start to pay off, and some of that shyness falls away
>Sweetie sometimes sticks around after your kissing and you talk about other things
>How your lives are going, what each other's friends are up to
>Honestly, it's kind of nice just to be spending more time with her
>The kissing is just a bonus
>Eventually brief pecks give way to big, sloppy, lip-smacking affairs
>These aren't your favourite, particularly, but Sweetie seems to enjoy them a lot more than the ones that came before
>And unlike the other kisses that took barely any time at all, you actually have to start worrying about being walked in on
>Really, just closing your door seems to do the trick
>But you can't help but worry that you're courting disaster
 
>One day, you mention this to Sweetie
>From then on, your sessions alternated between your rooms and out behind the garden shed
>In fact, behind the shed is where you first get a little handsy
>At first they're just simple hugs
>Holding her close when you come out to practice
>But before long, you're progressing into full-on gropes
>Squeezing her firm ass cheeks as she moans into your mouth
>Pawing at her developing breasts through her school uniform
>Grabbing fistfuls of her hair as you share spit like desperate animals
 
>It's not until you get brave enough to lift her bodily off the ground and slam her against the back wall of the shed that you each slip each other the tongue
>And you almost suffocate each other as you both refuse to be the first to come up for air
>Eventually, though, you do realise how long you've been at it
>Who exactly broke off first was the topic of fierce debate for a long time
>And you suspect that argument was actually the source of Sweetie's aggressive streak in the following weeks
>She'd come upon you when you were least expecting her to and try to shove her tongue straight down your throat
>Whether you were making food and thought you were alone in the house, whether you were trying to exercise or typing away at your computer, it didn't matter to her
>She'd slam any lock on the room you were in
>Straddle your hips
>And come for you with almost terrifying determination
 
>You briefly debated telling her it was getting weird during that period
>But if you were being honest with yourself, you had to admit that those days when she would burst into your room and start dry-humping you at your desk while putting a spirited effort towards sucking your tonsils out were the best days of your life so far
 
>No matter how much you both enjoyed it, though, you had to be realistic
>There was no way you could pass this off as 'kissing lessons' anymore
>You had both gone through too many pairs of good underwear for that
>So when you and your little sister are lying on your backs in your bed, sweaty, panting and trying to catch your breath, you broach the subject
"Hey, Sweetie?"
>"Mmmm?"
>She rolls onto her side to look at you more clearly
"I was... wondering about our practice."
>For a moment, she looks worried
>Her eyes widen and she scrabbles over to cling to your side and look imploringly up into your face
>"This isn't the 'weird' moment is it? Please tell me it's not the weird moment. I've been learning so -much-!"
>Oh, Sweetie
>The more things change, the more they stay the same
>Her anxious voice cracked adorably
"No, sis, I don't want us to stop."
>The relief is palpable, and she hugs you tight as you say it
"But I was starting to wonder if you... maybe wanted to practice other things too?"
>For a moment, you worry that you might have misjudged this whole situation
>Sweetie leans against your side in what looks like deep thought, pulling a pouty face
>"You know, I think I might."
>She starts tracing small circles around your chest through the thin, sticky fabric of your shirt
>"There's so much more a girl can learn to do for her man, isn't there?"
>She tries to flutter her eyelashes seductively
>Sad to say, but it doesn't have quite the effect she intended, seeming more like a series of slow blinks
>But the thought is there, and you bend down to give her a kiss on the top of her head
>Sweetie glances down toward your midsection
>"So... how soon were you thinking of switching up our practice, Anon?"
>"Because I would be ready whenever you like."
>You grin, thinking back to how this all began, and roll over so that Sweetie is beneath you
>You shimmy down her slim, pubescent body, planting bitey-kisses against her breasts and her belly
>Breath catches in her throat, but her blouse protects her from most of the biting as you make your way down her navel
>All the way down until you can lift her legs over your shoulders and nuzzle your nose against the prize between her thighs
 
>For a while, all you can taste is cloth
>Ultimately, though, her skirt is not proof before you, and you nudge it out of the way, flipping it up so that your sister's panties are exposed to you
>For a moment you take in the sight of them
>Simple and white, with pink elastic and a tiny pink bow on the front to match
>They're adorable, and immaculate save for your sister's obvious arousal seeping through them
>You almost fancy she smells of raspberries and cream
>Maybe she tastes a little more sour than that as you experimentally graze against the sheer cotton with your teeth
>Content with nestling your face into and against her most sensitive region for now, you wait until sweet, involuntary squeaks and moans start to escape her
>And then you start tugging at her panties
>It's a little harder than you imagined to pull them away
>You pretty much have to wait for Sweetie to gather the presence of mind to lift her buns just a little to give you the wriggle-room
>But once she does that, you tug them away, pulling her legs together over the same shoulder so that they're easier to remove entirely and toss somewhere
>With her little mound exposed, you part her legs again
>And dive in
>It doesn't take long before your tongue has her thrashing about
>And then, suddenly, her muscles lock and she squeals desperately into one of your pillows
 
>You wait until her legs relax, and then gently part them so that you can lie next to Sweetie and give her a teasing kiss on the nose while you still smell like her
>She grins at you dumbly, still in the throes of bliss
>But eventually, she does have a question
>"What did I learn there?"
>You wrap your arms around her waist, spooning her close
"How to accept something nice from someone who loves you."
 
>And that was the first time you ate her out
>Many more would come, but she absolutely, categorically insisted that she be allowed to try and suck your dick before letting you go down on her again
>It'd be nice to say that she was a natural
>Nice, but untrue
>Her first slobbery attempts to fit your cock into her mouth ended with slobbery, tearful choking fits
>And while that discouraged her at first, you kept telling her that even that felt amazing
>And it did
>In the end, though, her determination to keep trying saw her sucking down more and more of you with every attempt, until she could deepthroat you like a champion and guzzle your loads like a glutton
 
>There was something else you were both yearning to try, though
>And one night, she left you directions to a quiet clubhouse near an apple orchard
>You decided to leave at different times to minimise suspicion
>Sweetie went first
>And then, a little later you went for the door
>"Oh, Anon, darling?"
>Oh, right
>Your other sister
>"Are you going out, dear?"
"Yeah. I'm meeting a friend. I should be back in a couple of hours, though, why?"
>"No reason, darling."
>"Only I got Sweetie Belle something that she might find useful, but forgot to mention it to her when she left."
>"Could you take it with you, and if you happen to see her out there, be a dear and give it to her, won't you?"
"What-"
>"Oh, it's by the door. You'll know it when you see it."
>Strange
>You head to the door, and look around
>The only thing that stands out is a box of condoms with a note taped to it
>It reads; 
>'Don't be careless, you two!' 
>'XX Rarity'
>You're not positive
>But you're pretty sure that means she knows
>It's strange, but the fact that she isn't a voice of condemnation is actually kind of encouraging
>You pocket the box and head out into the dim light
>Sweetie's directions are easy enough to follow, and before long you stand outside a small wooden building lit by a warm glow from inside
>You push your way in, and where you were expecting to see a fairly stark wooden interior, you instead see quite a comfy selection of cushions
>Tables strewn with candles light the clubhouse instead of the bare lightbulb hanging overhead
>A pair of small hands wrap around you from behind, tugging at your belt as soon as you come in
>You help them wrangle you out of your trousers, and turn around with a mind consumed by lust
>You lean down to plant a kiss against Sweetie's lips, and she jumps onto you
>Legs lock around your waist as you stagger, adjusting to the extra weight
>The two of you barely miss a beat as your tongues clash and you make your way towards the pile of cushions
>You murmur huskily at your soon-to-be-lover
"You haven't been waiting long, have you beautiful?"
>She fails to fight a low laugh as she pulls at your shirt
>"Only my whole life, Big Brother,"
>"Now did you come here to talk, or did you come here to fuck me?"
>Her hips grind insistently against your straining member
>It's only Rarity's reminder that means you think to slip a rubber on as you lie Sweetie down and tweak yourself out of your boxers
>Before you even have the chance to ask, your sister throws her arms around your neck
>"I'm more than ready, Anon."
>"Give it to me. Give it all-"
>Sweetie's words of encouragement ringing in your ears, you guide yourself to her opening
>It's not an easy fit
>You have to push yourself inside gradually, and the sheer tightness of your baby sister's puss is unbelievable
>You have to see her face screwed up in pain
>Even through the obvious agony and the tears in her eyes, she urges you onward
>Even with the dripping juices you can feel, it's slow going
>And before too long you meet even more resistance
>Holding Sweetie's hand, you angle yourself just so... and push through
>She winces and wails, and you lean into her neck, cooing soothingly
>The worst, you hope, is over
>And after almost a minute of lying very still with you buried inside her, Sweetie finds her voice
>"It's- it's okay,"
>"It doesn't hurt so bad any-ahh!"
>You start to move, sliding a little way out of her, and she can't hold back a scream
>But at her insistent urging, you don't let up
>You try to keep a smooth back and forth motion
>Even though there are still tears in Sweetie's eyes, her screams of pain gradually start to turn to squeals of delight
>And once you start to hear those moans, there's nothing in the world that would keep you from pounding her to pieces
>With the wet sounds of flesh against flesh and the cries of two lovers filling the clubhouse, you start to feel a pressure build at the base of your cock
>You're not quite sure how long you can hold it back
>But you're determined to try and reward your little sister for being so very brave
>As you rut her, you try pinching at her nipples the way you know she likes
>You nip at her neck just where she's most sensitive
>And just when you feel like you're going to fail her during your first time together, you feel her body shudder against you
>Sweetie utters the most animalistic, shuddering moan you've ever heard her make as she clamps down tight on your throbbing meat
>And you can't hold back any longer, spilling your seed into its thin cover - which with a sinking feeling, you feel split
>As you collapse in a heap with your cute little sister, you try to croak an explanation
"The- The condom-"
>"I know, Anon,"
>"Rarity's generous, but I didn't forget them."
>"I wanted you inside me for our first time."
>And as you lie together in a panting tangle of limbs
>You're not sure that seems like such a terrible thing