Dyson Spheres (Valvrave)
Dyson Spheres in the Valvrave franchise are the massive orbital colonies where 70% of humanity lives in the True Calendar era. JIOR Module 77—where Haruto Tokishima discovers a Valvrave—is one such module. The three major powers (Dorssia, ARUS, JIOR) control these spheres, creating the political backdrop for the conflict that exposes the Magius conspiracy.