The Orcish Curse

Long, long ago, an eternally young and beautiful race of all-female elves were enslaved by orcs.
The orcs f*cked the elves for sport, but since their species were incompatible no children were born.
Many centuries later, those orcs were dead and gone.
History was slowly forgotten... many elves did not remember the orcs had ever come.
But quietly, some remnant of the orcs had survived in the immortal wombs of the elves.
A contamination, a curse within the genes, was beginning to awaken.