Two-dimensional was an anime genre. What was the difference between the three-dimensional world and the four-dimensional world? Was there a dimension?

Two-dimensional refers to fictional worlds or characters that usually appear in anime, comics, games, and other media. The three-dimensional world refers to the real world we live in. The fourth dimension was an abstract concept commonly used in science fiction to represent a parallel universe or space beyond the real world. There was no such thing as a one-dimensional existence in real life. The second and third dimension were relative concepts. They existed in different time and space.