Forgot something

For as long as people can remember, it was then known for the descendants of the East to usually have one son or daughter—unlike the descendants of other regions who could have tons of spawns as they wanted. This resulted for the ability to extract perithia to befall upon one person only, leaving the task of providing the East's life force to him or her. Their descendant being able to birth a limit of a single child was an unexplained phenomenon in the region. Some believe it was a curse. Some say it was a punishment from the goddess. For of course, should they lose their sole giver of aether, the East would fall to ruin. Nevertheless, the Eastern region thrived and flourished.