Sci-fi, or science fiction, is a speculative genre which builds on imagination. Sci-fi anime ask, "what if things were different?" They explore a new world, whether it's the world of the future or past, a present Earth with a changed history, a land that was previously unknown, or another planet entirely. The genre commonly features humanity's inquisitiveness and innovation, as they grapple with new technologies, new societies, or new frontiers in Outer Space.
In these anime, characters embark on a journey to explore the world or to search for something. These wanderers travel to many places and meet new people, often encountering hardships along the way, or discovering strengths and weaknesses about themselves that are revealed throughout the adventure.
Action is about conflict. Whether with guns, blades, fists, or mysterious powers, these anime feature characters in combat - either to protect themselves or the things or people they value, or simply as a way of life.