Toaru Hikuushi e no Koiuta

Synopsis

The remaining students continue to provide recon for the island while the commanding officer from the Holy Levamme Empire, Marcos Guerrero, meets with the Council and Nina. He is amazed by how similar Nina is to their empress, and invites her to meet the empress one day. He explains that he has been sent to also discover the Holy Spring by his country but have faced a stubborn resistance from the Sky Clan, who take no negotiations with others trying to discover the Holy Spring. He warns that further attacks will destroy both of their fleets as the Sky Clan is too powerful to defeat in their current states. A messenger arrives with a message from the Sky Clan and to the group's surprise the Sky Clan will agree to a truce under one condition: that they turn over Nina to Sky Clan, as she is prophesized to be Saint Aldista's daughter and is an important figure in their beliefs. They are even willing to allow the fleets to pass through their territory in exchange for Nina. Despite the council's protests, Nina agrees to go to save the fleets. The students learn of this and Kal-El is not happy and talks to Ariel about this. He is surprised that Ariel is being somewhat cold towards his response also and wonders what it could be. The day of her departure, the two meet Nina and share a final embrace with her, and as she is leaving, Kal-El yells to her he will find the End of the Sky and find her someday no matter how many years it will take. Impressed, Ignacio vows to protect her on behalf of Kal-El until he returns one day. The combined fleet soon passes through the Holy Spring and reaches the End of the Sky, a beautiful rainbow like phenomenon, and are stunned to learn that their beliefs exist are true. With everyone safely evacuated to the fleet, the island of Isla passes through the End of the Sky and is reabsorbed.

(Source: Wikipedia)