During the introductory section of the film, Shinichi Ichikawa/Zebraman, is watching a parody of Super Sentai/Power Rangers where the hero fights Sadako Yamamura from "The Ring". Ironically, this seems to predict the plot of the 2007 film, "Kamen Rider: The Next", which features a Sadako-like antagonist and a plot similar to "The Ring".