Kidou Jousai Saratoga ~Ginrei no Kenki ga Boku no Geboku ni Narimashita. (Associated Names)

In the country of the Desert, Escalis Mimir, people lives in Mobile Fotresses Cities. In order to save his kidnapped stepsister, Nanashi, a boy from the scorned People of the Desert called bugs, infiltrated the Fortress City Saratoga alone. There, by chance, he saved the life of the Silvery Sword Princess famed to be the…