Simoun Ibara Sensou ~Fuuin no Ri Maajon~

It's a story of a group of girls who pilot mighty airships Simouns to defend their nation against potential usurpers. The attack of Argentum invaders is finally over. But when Simoun is sent to secure the area of ancient ruins, the neighboring principality Simulacrum ships are already guarding the place. Girls get caught up in a war. [Edited from Psxdatacenter]

A war breaks out between three nations Simulacran, Argentum, and Plumbum over Simulacran's helix motor technology that powers the airships known as Simouns. Two fleets of the Simoun, Chor Caput and Chor Tempest, stumble upon a huge Argentum airship fleet attempting steal a Simoun. Suffering massive losses in the battle, the pair Neviril and Amuria of Chor Tempest attempt an extremely powerful but extremely dangerous maneuver out of desperation named the Emerald Ri Majon; Neviril hesitates after making eye contact with the enemy, and the pair fail resulting in an explosion that takes Amuria with it. The fight leaves the sibyllae or members of Chor Tempest extremely demoralized and Neviril in despair.