Kidou Senshi Gundam: Tekketsu no Orphans

Three centuries after the "Calamity War" between Earth and Mars, Kudelia travels to Earth to advocate for the independence of the Martian city of Chryse, which is governed by the Earth government. She is accompanied by Mikazuki Augus and Orga Itsuka from the private security firm CGS. After an attack by the group Gjallarhorn on Kudelia and CGS, Orga views the incident as an opportunity to stage a coup against the company. Mikazuki and Orga become involved in a new conflict. To counter Gjallarhorn, Mikazuki pilots an ancient mobile suit from the Calamity War, the Gundam Barbatos, equipped with a nuclear reactor.