Wikipedia
The Hwarang, or "Flowering Knights", were an elite group of male youth in Silla, an ancient Korean kingdom that lasted until the 10th century. There were educational institutions as well as social clubs where members gathered for all aspects of study, originally for arts and culture as well as religious teachings stemming mainly from Buddhism. Chinese sources referred only to the physical beauty of the "Flower Youths". Originally, the hwarang were known for their use of make-up and cosmetic decorations and accessories. Few Koreans are said to have known about the history of the hwarang until after the liberation of 1945, after which the hwarang became elevated to a symbolic importance.
The Hwarang were also referred to as Hyangdo (fragrant ones or incense men), the word hwarang and its colloquial derivatives being used for everything from playboy to shaman or husband of a female shaman. The word remained in common use until the 12th century but with more derogatory meanings.