Kyoukai Senki: Kyokkou no Souki

The story takes place after the Hokuriku front has ended, and a new government, the New Japan Cooperation Organization, was established to govern a created land for the Japanese people. Despite this, the situation in Japan remains complex, with various powers exerting control and the Japanese people still facing oppression. On the isolated islands in the South Sea, the Oceania Army maintains effective control, while the resistance group Hinukan fights back.