Kimi to Boku no Saigo no Senjou, Aruiwa Sekai ga Hajimaru Seisen Season II

The struggle between the Empire and Nebulis Sovereignty grows more dangerous as the Sovereignty approaches an election that could place its most aggressive faction in power. Alice must protect her family's position while extremists from the Zoa household push for a future of total war. At the same time, Iska is assigned to guard Alice's younger sister Sisbell, whose knowledge makes her a target inside her own country. Their new proximity only complicates Iska and Alice's already impossible relationship, but jealousy is the least of their problems. Assassination plots and political schemes are closing around the royal family, forcing two supposed enemies to decide whether preventing catastrophe matters more than the orders and borders that keep them apart.