Lagrange: The Flower of Rin-ne

Madoka is the only person in her school's Jersey Club. One day, a mysterious girl named Lan recruits her to pilot the robot "Vox" and defend their city from alien invaders. They team up with a third girl, Muginami, though her motives clash with Lan's. As they fight, the trio remains unaware of their enemies' true intentions-or the meaning behind the word "Rinne."