Ef: A Fairy Tale of the Two is a two-part Japanese adult visual novel, Minori attempted to create a movie-like experience, using a lot of animated two-dimensional computer graphics presented from various angles. Instead of presenting the visuals straight-on with a character's image in the middle of the screen and the character being the main focus, the character images in the Ef series are off-center and appear closer to "event" computer graphics (CGs) in typical visual novels. (wikipedia.org).