Mated To The Ruthless Alpha King

After werewolves took over the world and became its supreme ruler, human women (ages between 18 and 35) were locked away in dungeons then forced to become the sex slaves of male werewolves who had failed to find their mates. Once you are chosen by a werewolf, you will become their possession for the rest of your life.
Sarah Fibb is a sex slave who had been in the dungeons for five years. After being there for so long, she had lost the hope of ever being chosen by a werewolf. But one night, a strange thing