Simoun

In the peaceful theocracy of Simulicram, everyone is born female. At age 19, each maiden undergoes a special ceremony where she chooses her sex. However, only Pairs of maiden priestesses can synchronize with the ancient flying ships known as Simoun needed to defend Simulicram. These Pairs refrain from undergoing the ceremony as long as they wish to keep piloting their Simoun. Aer is recruited to be a Simoun pilot after a terrifying attack by an enemy nation decimates the squadron known as Chor Tempest. To earn her wings she needs to find her way into the heart of Neviril, Regina of Chor Tempest. But Neviril's heart still belongs to her previous Pair, lost in the battle when she attempted a forbidden Simoun maneuver. (Source: Media Blasters)

Cross Ange: Rondo of Angel and Dragon

Betrayed, stripped of her birthright, and declared less than human. Everything that Princess Angelise Ikaruga Misurugi of the Misurugi Empire thought she knew about her world was a lie. Now, for the crime of not being able to use magic, she’s been sentenced to certain death as a slave-soldier. The girl now known as Ange is no longer an innocent Princess: she’s learning how to kill draconic invaders, defending the same traitors who stole her life. However, they made a fatal mistake: they gave her access to an incredible weapon. (Source: Sentai Filmworks)

Mobile Suit Gundam: The Witch from Mercury

A.S. (Ad Stella) 122 An era when a multitude of corporations have entered space and built a huge economic system. A lone girl from the remote planet Mercury transfers to the Asticassia School of Technology, run by the Beneritt Group which dominates the mobile suit industry. Her name is Suletta Mercury. With a scarlet light burning in her pure heart, this girl walks step by step through a new world. (Source: Mobile Suit Gundam The Witch from Mercury Official Site)