Hiro Xanthe (寛クサンテ Hirō Kusante?) born as Ignis D. Hiroshima, or also also known as Thunder Beast Hiro (雷獣のヒロ Raijū no Hirō?), is an Infernal, and a former Marine. Hiro is currently a Pirate, and the main protaganist of "One Tomorrow". Hiro is the Captain of the Thunder Beast Pirates. Hiro is also the younger twin brother of Riku Xanthe, the Navigator of the Pop Band Pirates. Hiro has even made friends and allies from all over the world, and from some of the strongest pirates around.