Ginga Kikoutai Majestic Prince

During the second half of the 21st century, humanity relocates to space, leaving Earth behind. To survive in this new environment and combat alien threats near Jupiter, a group of genetically modified children known as "Princes" are created and trained to pilot advanced combat robots called AHSMB. One such Prince, a teenager named Hitachi O Izuru, attends school in the academic city of Grandzehle.