In the live-action tokusatsu version of the Kikaider franchise, Jiro's story ends with the defeat of DARK and Professor Gill - with his older brother Kikaider 01 taking up the fight against the revived Hakaider and the forces of evil organisation SHADOW. However Shotaro Ishinomori's manga series takes a different approach to things, with Jiro remaining the main focus of the story as he meets his brother and fights against this new threat. The four-part OVA sequel to Kikaider: The Animation continues Jiro's story in the same way, however like the live-action sequel switches the name to Kikaider 01: The Animation to mark this new instalment in the story.