The phrase describes a subgenre within anime narratives. This subgenre typically involves a powerful, often villainous, character from a fantasy realm, such as a demon king or similar figure of authority, being displaced from their position and forced to adapt to a more mundane existence, often in a contemporary setting.
The popularity of this narrative structure stems from its potential for both comedic and dramatic storytelling. It offers an opportunity to explore themes of identity, purpose, and societal adaptation, as well as allowing for humorous contrasts between the character’s past life and their present circumstances. Historically, similar stories of powerful figures experiencing displacement have resonated across various cultures, finding new expression within the anime medium.