The early Heisei era was a pretty grim time for Kamen Rider . Not in the sense of the franchise’s popularity, but in terms of the amount of death and destruction going on in them. Kuuga had the Grongi racking up enormous body counts on a weekly basis, Agito saw the Lords come up with new and grotesque ways to kill their victims and every Ryuki rider was at constant risk of being eaten by their own Contract monster. This then continued in 2003-2004 with Kamen Rider 555 , the fourth entry in the show’s Heisei era and 13th series overall. It was written by tokusatsu veteran Toshiki Inoue , his second time as a Kamen Rider showrunner following his work on Kamen Rider Agito .