Koryo

Koryo, formerly known as Choson, was a loose association of three kingdoms all descended from the Han people. The kingdom was ruled by a strong king, the warlord, Wanang Sun.

Language
Koryoans spoke the Koryo language, which descended from the ancient Han language, with many loanwords from Wa-an and Kao te Shou borrowed over centuries. Owing to its similarities with other languages, it was easy to find Koryoan translators for many languages, though few learned Kozakuran, owing to enmity between the peoples.

Behind the scenes
Koryo was modeled after Korea.