It seems like every other boy and girl I know is scared about this change, or at least doesn't want to have to do it. I think I'm the only person who's actually kind of excited about it. For a really long time, I've wondered what it'd be like if I was a girl, and getting to find out is something I really want to do.
I arrive at school early, partly because I want to get to do this before everyone else and partly just to make sure I'm in the right place. They make me wait for everyone else, but I got first in the queue. I'm shown inside and taken to the hall where the inversion chambers are set up, and they point me to the one for boys to use.
I walk inside, and find it's a long corridor with pinkish flesh-like walls and lights illuminating it. Eventually I reach the 'conversion section', and it shuts me in, a screen in front of me showing the word "UNDRESS". I do as it asks, pulling off my shirt, shoes and socks, trousers and underwear, standing in the fleshy chamber alone and naked.
Once it can tell I've gotten undressed, the process starts and I feel a tingling sensation all over my body. My figure is softening up, my arms and legs seem more petite. My skin smooths all over. I see myself form curves around my hips and a large butt. My hair lengthens down my shoulders and partway down my back, and a shiver runs through my face as I realize even it's getting altered by this.
Soon the tingling really wells up in my chest and crotch, and I watch transfixed as I turn from male to female. My nipples grow sensitive and widen to double their size, and when I touch them, I whimper at how nice it feels. Warm, soft flesh swells around it and I realize I'm growing boobs. I've never so felt so unlike a boy, and I love it so much.
The changes are happy to take this further still as they settle on the only part of me that's still masculine and feminize it. My cock starts to shrink away, growing more sensitive as it recedes, and I feel my balls pull up inside me, the sac that held them sifting into a pair of lips leading inside me. Slowly it settles in- I'm a girl now.