The Jomei was the title given to the Boar leader of the Lair, a remote valley in the Twilight Mountains cut off from the Emerald Empire since the early 6th century. When the founder of the Boar settlement, the original Heichi Jomei passed away, his son took the name of Jomei, and this soon became a tradition, so that a Heichi Jomei had always been in charge of the Lair.