Sageuk (사극) is the Korean word commonly used for a historical drama. The National Institute of Korean Language defines it as theater, film or television drama made from events or people in history.
That definition is the starting point, not a promise that every scene is historically documented.
Traditional and fusion sageuk
Some sageuk center on recorded kings, wars, court factions or political change. Others invent protagonists and romances inside a recognizable period. Fusion sageuk goes further, combining period settings with modern pacing, comedy, fantasy or supernatural rules.
A drama can therefore use real royal titles and clothing while telling a largely fictional story. Netflix’s The East Palace, for example, uses a Joseon palace setting but builds its mystery around spirits and a curse.
Details that help new viewers
Royal titles and family rank often matter more than a character’s personal name. The crown prince, queen dowager and court officials occupy different positions with specific expectations. Subtitles may translate the same Korean title differently, so apparent name changes are not always errors.
Is sageuk one genre?
It is better understood as a broad historical category. A sageuk can also be a romance, political thriller, comedy, action series or horror story. Before watching, check both the period setting and the secondary genre.
Historical inspiration should also be separated from historical accuracy. A useful review identifies which people or events are documented and which parts belong to the writers’ fictional world.