Toaru Hikuushi e no Tsuioku  

A Princesa e o Piloto, La Princesa y el Piloto, Princezna a pilot, The Princess and the Pilot, The Recollection of a Certain Airship Pilot, The Recollections of a Certain Pilot, とある飛空士への追憶

For many years now, there has been a conflict between the Levamme Empire and the Amatsukami Imperium. During this ongoing struggle, the prince of the Levamme Empire announces his love for Juana del Moral and promises to end the war within one year as part of their marriage proposal. However, when the Amatsukami learn about this, they launch an attack on the del Moral residence with the intention of harming Juanas life. In response, the San Maltilia Airforce employs a bestado mercenary to transport Juana secretly to the Levamme capital. Despite accepting the mission, traversing the ocean alone and entering enemy territory proves to be much more perilous than anyone could have anticipated.