Lagrange - The Flower of Rin-ne

Madoka is the lone member of her school's Jersey Club. She is one day recruited by a mysterious girl named Lan to pilot the robot Vox and protect her city from space invaders. They are joined by a third girl, Muginami, who has a different goal than Ran. Meanwhile, they still don't know their enemies true goal, or what Rinne might be. (Source: ANN)