Female only cock starved

As you approach the village Mirre tells you "We have lots of fun at village. There no stallions. They all went to war...never came back. The mares all dess-rat for cock. You make them all happy. Human cock small but get us preg-ant. The herd needs new babies or die."

'What have you gotten yourself into' you think. You could go on a quest with Merri to find the missing centaurs or some other males, have an orgy then leave or become the new leader of the herd