Animefreak FX: Vol. 4 is the only volume in the series that does not contain any mini-games. Along with a PC-FX game catalogue, a live-action video involving Japanese "idols", information about shopping for PC-FX products, a geographical database along a Japanese railway route, and a preview of the upcoming Last Imperial Prince, this volume contains the opening chapter of an anime mini-series entitled Prism Knights, its plot focusing on a group of high school girls who gain access to powerful transformation abilities in order to face evil extraterrestrial beings.