A soliloquy is a device frequently used in drama when a character converses with himself or herself, relating feelings and thoughts, thus also sharing them with the viewers. Other characters, however, are not responsive to what is being said. A soliloquy is different from a monologue or an aside: a monologue is a speech where one character speaks to other characters; an aside is a comment by one character towards the viewers.
Soliloquies were often used in dramas but became outdated when drama shifted towards realism in the late 18th century. At present, Korean screenwriters regularly add short soliloquies in Koran drama. Queen In-Hyun's Man is a good example.