Work for a personal project.
The Mokai have a genetic condition they don't understand that causes far, far more males to be born than females in any given generation. Because of this huge imbalance if males are rejected as sires and unable to find work most find themselves without a place in society and leave the city in search of different life. Or, more tragically, to commit suicide. If they are found alive they are often taken in by the nomadic bands of Wayfarers though it is far more common that they are found dead. Because relations with the Wayfarers and Mokai are strained, North Hollow was established as a place where the two societies could communicate without necessarily coming into contact with each other.