A five-volume light novel was published by Shueisha under its Cobalt imprint from August 1983 and October 1984.[6][7] The original manga was republished in bunkoban format twice; Chuokoron-Shinsha released it from October 18, 1994, to April 18, 1995, in fourteen volumes,[8][9] and Shueisha released it between June 18, 2002, and October 18, 2002, in ten volumes.[10][11] The series has been localized in Italy by Panini Comics and published under its Planet Manga line.[12]