Lagrange: The Flower of Rin-ne (輪廻のラグランジェ Rinne no Raguranje) or AKA Flower declaration of your heart is a Japanese anime television series produced by Xebec and Production I.G. There are currently two seasons of the anime.

Story:
Madoka Kyouno, a schoolgirl from Kamogawa, is the sole member of the Jersey Club and always ready to help others out. One day, she is approached by an alien named Lan who asks her to pilot a robotic aircraft to defend mankind against an evil force.

Main characters:
Kyouno Madoka
Lan (AKA Fin E Ld Si Laffinty)
Muginami

Source:Wikipedia