you know your little brother is a girl, it's the only thing that makes sense to you. he's so small, and soft, and his chest is just a little bit puffy in the way that forces you to make him cover up around others, in case they have similar thoughts. and.. his parts are so small, and effeminate, and he makes little noises when you touch him, and when you read the lewd magazines your friends at school got you sometimes you can't help but think about your tiny little brother in those outfits instead... he's clearly not like you, he's not made to be a boy...

you have a girl friend (not a girlfriend, that'd be lame) at school who can help you out with things, and when you mention you wanna pick out an outfit for your little sister she's more than happy to oblige. a cute little pink blouse, a skirt that's maybe a little bit too short to not be considered uncouth... some chunky mary janes, and the most important parts: a little padded training bra to cover up his tiny chest and the cutest little frilly panties...

you wait until he gets home from soccer training, all sweaty and exhausted and stumbly, to corner him in the hallway—you've got something else to show him, something that will make him feel cool and grown up, way cooler than your magazines. you string him along, lead him to your room with that stupid little excited blushy smile on his face.

you push him down onto your bed and he lets out a dumb little giggle, god, how did you ever think he was a boy? boys don't giggle like that.. your voice stumbles a little bit. you have some clothes you need him to try on, it's important, they're perfect for you.. no, no, no, you have to take off your boxers too...

you can't help but watch as he pulls off his clothes, little by little. he seems nervous, looking around anxiously, eyes flitting anywhere but your face. you think he can tell you're lying. the way he pulls off his jersey and his little chest bounces oh my god you can feel heat rushing to between your legs. you don't stop watching as he pulls down his cute little camo briefs, lecherous teenage boy eyes watching his every move. staring as his tiny little parts flop out, too small to even constitute a dick, so cute and bare and innocent...

you take the clothes out of your backpack, all neatly folded up by your friend (you would never do that, that's gay) and present them to him, watching the look on his face amusedly. watching your little brother pant, and stutter, and protest—bbut these are for girls! i can't wear them... telling him that he will, that you picked them up out just for him, and he wouldn't want to disappoint his big brother, would he?

you don't stop watching him as he acquiesces, even as he turns away—watching him slide those little panties up his legs, watching the way they try to accentuate his totally flat hips, how perfectly they sit against his little butt.. you have to clench your legs together a little.. the way he struggles to get his bra on, arms flailing around—you want so so badly to wrap your arms around him and tug it down into place as he whines in protest—but he manages, and even from behind you can see his chest jiggle a bit, and how did you ever think he was a boy?

he's pulling up his little skirt now, and wow, it's so little, it feels like his panties are not even an inch away from flashing you under the plaid and pleats, and you feel the urge to put a hand between your legs a little bit, and as he pulls the blouse down over his head you can't focus on anything but the outline of his body imprinted in your mind—you picked out cute little socks too, the kind that go up to your thighs, and he's pulling them up, and he's so small and it's leaving little indents in his legs and fuck—

you want to push him down onto your bed you want to see his tiny little girl parts all tightly wrapped up in his new panties you want to and his skirt all splayed out for you and you want to run your hands up his blouse and squeeze your little sister's chest through it and listen to his stupid whimpers because you know his body's sensitive enough to react to everything—

but you don't, you let him spin around and present himself to you all dolled up, and his face is so red you think you could cook something on it, and his eyes keep looking away from you, all skittish and nervous, and... god she's such a fucking girl, her body is so small and soft and.. flat everywhere but she's still obviously a girl, you could take him out right now and show him off to your perverted friends and they'd probably have to stop themselves from touching him but you wouldn't do that because she's Yours, she's your little sister to do whatever you want to,

you smile with all the restraint you can just, and you tell him she looks like an adorable little sister, and she lets out upset little whines in protest, because she's a boy, not a girl... you shake your head, and say that all you see is a girl, that she's too cute to possibly be a boy, and somehow that's all it takes for him to shut up, even if her face is still redder than you've ever seen it. you ruffle her hair, and she lets out a really really loud whine that makes you want to grab her head and push him onto her knees, and have her soft little lips wrapped around your parts just like a girl would.. you're such a good older brother for showing restraint and not violating him right on the spot! instead you tell him it's time to leave now, little sis, and she barely even protests at all as you grab her hand roughly and drag him out of the room.

now she's in the kitchen, because you asked him to make dinner like a good girl, and you can't stop your eyes from fixating on him— every single movement is making her tiny hips jiggle in her skirt, and every time she has to bend down to get something her butt flashes you and makes you feel dizzy, and god you really can't help yourself and while she's halfway through rifling through the utensils drawer you sneak up behind him and you grab him by the hips—eliciting a very not masculine whimper—pressing her little butt into you so she can feel exactly how much your little sister has got you worked up..

her skirt practically flips all the way up at the slightest provocation and her panties feel like they don't exist at all, so tight and clingy and oh my god you can feel every curve of her ass, it's so much bigger than a boy's should be, digging your fingers into her hips until she yelps, pulling him against your hips and letting him feel how much you want to take him, the protective older brother wanting to take her little sister's virginity so that nobody else can—

you grind into him, letting out a little grunt—one much more manly and dignified than your little sister—as you grab at the collar of her blouse, tugging it down, letting the fabric assail her neck until it feels like it's about to tear and the oxygen is leaving her brain, feeling him dizzily fall against you, whimpering out your name all confused, god, she's so fucking small from here it feels like she's half your size... you could pick him up so so so easily, you could take him back to your room and ruin him forever, but you're having far too much fun. she's entirely collapsed against your body, her soft little barely developed frame cupping yours, as you run a gentle hand over her face before shoving your fingers down her throat until she lets out stupid little gagging noises and paws for escape, your little sister that's not very good at taking but she will be, you'll teach her like a good big brother..