Toaru Hikuushi e no Koiuta

Synopsis

Ignacio tells his backstory: he was the son of the concubine of the king, making Kal-El his half brother. Barely acknowledged and forced to work hard in the palace, he and his mother are kicked out as the revolution draws closer. After his mom dies, he clearly resents Kal-El and the kingdom and promises to destroy everything. Ignacio douses Kal-El with a cold dose of reality on how he is running away from his problems, which shocks Kal-El from hearing the truth. Meanwhile, Nina continues to practice her now lost ability to control the wind, to no avail. An observation plane is launched to scout the enemy forces, but with little trained pilots or planes left, Admiral Melze is forced to use the students to help provide defense. An outraged Sonia quits her commission and urges the students to leave, knowing this is a suicide mission for the students. While many students follow her call, Benjamin, Ignacio, Noriaki, and Kal-El volunteer to go, to the dismay of the girls. Unfortunately, the observation plane sent by the military is shot down, leaving only the two training planes left in the air. Even worse, the enemy battleship deploys a smokescreen, causing confusion among Isla HQ.

(Source: Wikipedia)