Muv-Luv Alternative: Total Eclipse

Since 1973, an invasion of aliens known as BETA upon Earth is driving human civilization into nearly collapse. Facing an enormous mass of enemy force, mankind has developed large humanoid arms called as Tactical Surface Fighters and deployed them to its defense lines through out the world. However, all those efforts could slow down defeats but could not stop BETA, and mankind is forced to abandon major area of the Eurasian Continent. For 30 years, mankind is bogged down in an endless war against BETA without any hopes of victory. In 2001, the Imperial Japan faces difficulties in the development of a next-generation main Tactical Surface Fighters (TSF) as it defends the front lines of the Far East. The UN has proposed a joint development program between the Imperial Japan and the United States as a part of its international mutual development project of TSF, the Prominence Project. Yui Takamura, a surface pilot of the Imperial Royal Guards of Japan, is given responsibility for the project and sets off to Alaska. Meanwhile, Yuya Bridges, also a surface pilot of the US Army, was heading to the same destination. Yet they never knew that their encounter would change their destiny drastically. This story with exciting human dramas and robot actions takes place in the development of a new Tactical Surface Fighters, the most important and effective weapons against BETA, at a crisis of human extinction. (Source: Muv-Luv Total Eclipse Official English Website)

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)

Revisions

"This is a prediction. An extreme crisis will befall the five of you someday. At that time, you five will protect everyone." Daisuke Dōjima is a second-year high school student who, as a child, was kidnapped. Daisuke, along with his friends Gai, Lū, Marimari, and Keisaku, get wrapped up in the mysterious phenomenon known as the "Shibuya Drift." The central area of Shibuya rises up and is transported at least 300 years in the "future." What awaits them is a vast wasteland and forest dotted with ruins. There, they will work with the future people "revisions" to operate giant mechanical monsters. Daisuke meets a girl named Milo, who has the same name as the person who kidnapped Daisuke. Milo informs Daisuke that he's the only one who can operate the "doll weapon String Puppet" and protect Shibuya. Daisuke and his friends must take back the present by fighting the future in a town of isolation, against an unknown enemy. (Source: Anime News Network)