Little is known about the new Kunzar kingdom other than the strange lizard like Kunzarian came from another world 235 years ago and completely destroyed the Thorak kingdom. The Thorak Kingdom was rich in Dwarven culture and was the most powerful kingdom on Eros until the Kunzar came, committing horrible crimes of genocide on the Thorak citizens, leaving very few survivors who became refugees to neighboring kingdoms.
The distruction of the Thorak by the Kunzar invasion completely changed the economical, political and military status of all of the governing bodies on Eros, thus when the Thorak Kingdom was destroyed a new year designation was started. P.I. (Post Invasion) for it was the invasion of the Kunzar that reshaped Eros.