Starfall Era 1

World view setting Time setting: Year 217 of the Interstellar Colonization Era, 150 years after humans established a colony on the ringed planet "Pan-7" Space setting: The space city "Iron Dome" consists of three layers of giant metal rings. The central energy tower connects the three major power areas. Technical settings: Steam-powered mechas use liquid metal fuel, and genetically modified humans need regular injections of star marrow fluid to maintain their abilities.