BF-599 — My Sister Is So Well Developed That She Is A Naked Girl And She Is Defenseless And Tempting Me, So I've Had Sex With Her.

It's been three years since I last came home. My sister was still completely naked at home. The only thing that was different from before was that her body had developed to the point where I couldn't look away. Even I, her younger brother, couldn't help but notice her body. My sister's body, which was defenseless and seductive every day, had finally reached its limit...