HUNTC-571 | "Big brother... why are you looking at my chest?" One day, I happened to notice the budding chest of my younger sister—who is a bit younger than me and whom I’ve always treated like a little kid... I just can't help but be hyper-aware of it now. And my little sister, who adores me, noticed the bulge in my pants... and then...

I’ve noticed something: my little sister’s chest—once completely flat—has recently started to develop. I used to think nothing of seeing her naked, but now, I can’t help but view her as a woman. She’s completely oblivious to my true feelings and keeps clinging to me just as she always has—which, naturally, leaves me fully erect! I tell myself it would be absolutely pathetic if she found out, yet I still find myself sneaking glances at her chest every single day. As it turns out, she’s actually noticed the change in my crotch! Just as I’m sinking into despair, thinking it’s all over, she suddenly closes the distance between us… and we end up crossing a line that should never have been crossed. We’ve gone from being just brother and sister to a man and a woman, and now, our daily lives have taken a turn into something far more intense and stimulating.