As Amy faced the mirror a sudden thrill trickled through her body, and without thinking about it she made a wish. "I wish I was a demon, free of mortal constraints!"
As she said it a surge of dark power roared through her body, and with it, came a living rush of equally dark and evil thoughts. Any thoughts of purity, of regret were instantly washed away as her skin turned dark red....a long spaded tail growing from her back. Her clothes burned to cinders as flames coated her body, her feet darkening into hooves as her hair turned black. Her tongue became forked as great horns grew from her head. Amy gasped, feeling these sensations and reveling in them. At long last the changes were done and she posed before the mirror.
A beautiful succubus now stood naked before the mirror, her breasts were larger, her body more sumptuous. Any thought of humanity and purity were long gone. "Mmmm not bad, "She cooed.