Formerly a high-ranking military officer, Daryoon is demoted from his position in the opening of the anime. His new mission is to protect and serve Arislan. Daryoon and Arislan become close friends. In the style of samurai, Daryoon is loyal to a fault, and at point tells Arislan that whatever his true origins may be, Daryoon regards him as his prince. His fighting skills are so legendary that, at one point, Prince Lajendra praises him as the greatest warrior in both Palse and Shindra.
(Taken from Wikipedia)