Humans, similar to the Kin, are not native to Andrus. They are the most recent arrivals to this world.
Thousands of years ago, during a particularly dramatic stellar conjunction, a great World Portal opened in Upper Andrus. Humans emerged and began moving across the land encountering Kin and Wild Bloods in the process.
The humans were travelers between worlds known collectively as Geomancers. They harnessed powerful magic through the precise alignment of celestial bodies in the cosmos to open portals between distant worlds. After a generation of living on Andrus some humans grew weary of their endless journey and decided to remain when the cosmic alignment keeping the World Gate open ended.
According to Ustaran records, celestial conditions do not favor reopening the World Gate.