Eureka Seven - good night, sleep tight, young lovers

Synopsis

Renton, the child of scientists, and Eureka, a girl who cannot live under the sun, are raised together from a very young age and grow deeply attached to each other. One day, Eureka is taken away. Powerless at the time, Renton vows to rescue her. He joins the military and soon, thanks to his exceptional performance alongside his Nirvash—a bio-mechanical armor/control system—he is assigned to the Independent Youths Unit 303 of the First Mobile Forces. Unknown to Renton, a plot to extinguish the ongoing alien invasion is underway, involving not only him but also Eureka.