Science fiction

Science fiction (sometimes called "sci-fi" or simply "SF") is a genre of speculative fiction that typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel universes, and extraterrestrial life. It has been called the "literature of ideas", and often explores the potential consequences of scientific, social, and technological innovations.

In anime, frequent themes include mecha, robots, technological weaponry, and virtual worlds.