The Subjective Story Domain is the realm of the story’s Passionate Argument. This is where the author creates meaning for the audience’s emotional appraisal of a story’s message. The primary focus is on the relationship between the Main and Obstacle Characters. Since the Main and Obstacle Characters are, by definition, at odds with one another, the Subjective Story Domain forms the background against which the battle between them is fought. As a result, choosing a Class as the Subjective Story Domain affects how a story feels to an audience.
From the Dramatica Theory Book