Special CD release to commemorate the 20th title from "Heisei Kamen Rider" series! This edition consists of four CDs including the main theme songs of all the 20 titles with remastering plus unreleased tracks in CD format so far, which are insert song(s) of "Kamen Rider ZI-O," re-recorded ones (subject to change) and nonstop mix of them. In addition, this set features serial numbered LP-sized box packaging with a set of 20 Rider Vehicle Pin Badges in a frame and a LP-sized booklet. Also includes commentary.