Seikai no Senki II

Lafiel is assigned as the Territorial Ambassador to Lobnas II after the Bebaus brothers' fleet moves on without leaving representatives. She arrives with Jinto and learns the planet functions as a prison for a million inmates on a single island. The population is divided into three sections: the western area for women, the eastern for men, and the central for mixed groups, where all residents are sterilized. Women in the west seek to leave the planet, prompting a rebellion by the men in the east, who seize control to block their departure. Meanwhile, an approaching enemy fleet forces Lafiel to evacuate Jinto.