The Imyes Plague was a large outbreak that killed around 20% of the population of Zitis. It spread into Zitis via the Imyes, from lands further to the north-east. This event caused the collapse of many states in Zitis, including the 3rd Dynasty, with the 5th Dynasty being one of the few to survive intact. The Imyes Plague also directly caused The Hisitse Civil Wars, the conflicts that would be central to Wajahe politics for the next half-century.
The Wajahe after the Imyes Plague. Note the independent state forming around the city of Vtetwe in the Tanlhawes to the north; and the collapse of the Kapapt after the Kapapt Wars to the south