This is an anthology story of people with a curse. The speciality of the curse is that the unlucky person transforms into an exact clone of another subject they were thinking of whenever they get aroused!

So yeah, this means men transforming into their own fap-off material :)

Or women turning into the hunky crushes next door xD

The curse works by reciting some magic words in a foreign language and picturing the targeted person in your head. So it is even good for some little revenge too :)

The voice of the transformed person stays always the same and unchanged, though there might be magic ways around that.

And lastly, the only way for the victim to reverse the spell is to have an orgasm while in their transformed state, either by themselves or through another...