Humanity is under siege. Strange, hostile beings known only as pillars are stripping away the very life force of the Earth, turning vast tracts of the planet into barren wasteland. The only ones who can stand in their way are the Valkyries, the chosen of Odin himself who fight with his blessing in divine machines that arc gracefully through the air, leading the countercharge of the human race. Even with their support, the fighting is desperate, and hope is hard to come by on the European front. Rusalka is determined to do everything she can to change that as one of the chosen warriors tasked with retaking the skies and bringing humanity back from the brink of extinction! (Source: Yen Press)

The 5th arc of the Re:Zero kara Hajimeru Isekai Seikatsu manga. Subaru and Emilia receive an invitation to a party from Anastasia and decide to go to Priestella, the city of the watergates.

An AI named Matsumoto appears before Vivy, the world’s first autonomous humanoid AI. Matsumoto’s mission is to rewrite history together with Vivy, in order to stop the war between AI and humans that will happen one century later. (Source: Funimation)

The Pillars suddenly appeared above Earth, threatening all life. A god who called himself Odin came to the aid of humanity as it was driven to near complete defeat. To counter the Pillars, Odin declared a counterattack by bequeathing humanity with the battle maidens Walküres and the "herocraft" as their wings. Several years later, the battle between humanity and Pillars rages on, with men supporting the Walküres as they soar through the treacherous skies to save the world.  Source: Aniplex

*Note: Includes 1 extra chapter.*