I used to enjoy being an older sister, looking after my little sis while waiting for the days when I could help her learn all about makeup and boys and cute outfits. But when the time came, my little sister Emily had something very unusual happen. Between her legs, she sprouted something extra. At first it was just an odd knub of skin sticking out from her groin, no bigger than a knuckle, which she showed me one day with embarassment and confusion on her young face. It didn't stop there, growing until Mom got involved and got her to the doctor where they explained that Emily was a very rare kind of hermaphrodite. Her body was developing completly functional sets of male and female bits down there.
Mom and I didn't really know what to make of it, but we were there for Emily, knowing that puberty was a strange and hard enough time for an ordinary girl, let alone one with a twig and berries growing in her pants.
In some ways, at first, it was exactly like I expected, Emily was finally interested in the sort of clothes I had already been in for a few years and we got to have some fun shopping trips. She was definitely being pulled in two directions though, as I got my taste of what it was probably like to have a little brother going through this phase, opening a door and feeling creeped out as I found Emily panting with her hand down her pants, back arced, eyes glazed over, tongue lulling from her mouth as she went to town with fast, almost desperate strokes. I cringed, trying to give her privacy before she noticed me, but I couldn't help but see, even then, that she was big. I had been through a few boyfriends and found myself wondering if I had been shortchanged comparing them in my mind to my little sister!
Mom and I tried to give her space as Emily spent more and more time in the bathroom without explanation, doing a bad job of keeping quiet and leaving sticky surprises for us to find.
The rest of Emily developed just as rapidly, the pip squeak I used to tease graduating overnight from hand-me-down training bras, blowing through cup sizes at astonishing rates.
The rate at which she filled out naturally attracted the attention of boys, who began to orbit around her, but even more remarkable was the way girls were flocking to her. She was the center of attention, even among the upperclassmen closer to my age. With the incongruent buldge in her skirts becoming more obvious all the time, the constant sleepovers and get togethers they were having all the time were hardly surprising. There was very little slumber and quite obvious partying going on.
Emily's growth only accelerated, and I found myself envious as her chest surpassed my own and just kept expanding all the while her other curves kept pace. Her transformation was remarkable, molding her into resembling a Victoria's Secret model.
And she knew exactly how she looked, flaunting herself as she grew out of her wardrobe week after week, those once innocent eyes now alight with allure, flashing with sensual hunger as they flicked over the girls around town.
I felt foolish for comparing myself to my little sister, no matter how gorgeous she had become. I should be happy that she was so fortunate, but it only got worse for me as she became ever more popular, always surrounded by a swarm of fawning young women, many of which had been my friends.
Before I knew it, I was not just figuratively but literally in her shadow as she grew taller, sprouting like a weed and keeping her ridiculous proportions.
One night, I had enough of the sounds of sex and intended to give her a piece of my mind. As I approached her room, the door opened and our mother slipped out, closing it behind her before she slumped against the wall. The toll Emily's behavior put on Mom was evident. She was a haggard, withered shell of herself, dark circles under her eyes. I reached out to her while she stared past me, a thousand yards away. A thick glob of white liquid was smeared into her hair.
Furious, I opened the door to my sister's room and my jaw hit the floor. The bedroom was packed with naked women wall to wall, splayed in all sorts of positions, writhing and panting with exhaustion, a sheen of sweat and fluids covering them. Several of the girls were heavily pregnant; one in the corner looked like she was trying to give birth. Their eyes were glazed with lust.
At the center of it all, with desperate hands and tongues clutching and roving across her from every angle, bodies stacked and huddled beneath, like a tyrant was Emily, a barely recognizable aphrodite with a trunk like a horse between her legs, her testicles hairy boulders slapping against the girl she was splitting apart with every thrust. Emily had another growth spurt in the hours since I had last seen her, and it looked as if she were in the throes of one now, as gooey white cream overflowed from her overstuffed partner.
Coming down from the orgasm, Emily noticed me, pulled her endless inches out, and smiled as she turned, her immense cockhead swaying as it swung about, dripping profusely. She rose to her full height, a colossal venus. "Hiya, big sis," she said with irony