Jiro is a determined individual with a strong desire for revenge against Nene, who is believed to have destroyed his village and taken hostages. He frequently creates tension between himself and Shu, intensifying their rivalry. For some time now, he has been traveling with Zola and possesses knowledge about "The Book of Origins" and the history of the Seven Warriors of Light. Despite being polar opposites to Shu, they both share a common trait: the strength and determination needed to defeat the Grand Kingdom if they put forth their best efforts.