The Jok'yyli Tribes were a few dozen tribes of Yishiwi that lived in the early Era of Mortal Dominance. In 11,862 EMD, the Aviah Kingdom expanded massively, and the Jok'yyli were incorporated into the realm. They stayed a part of the Kingdom for almost 20 years, until Gyesi Gyesi rose up during the Yishiwi Chief Rebellion and claimed the land that the Jok'yyli lived on as part of his kingdom.