Completely original 1991 three-volume OAV series in which a glittering, antiseptic future is threatened by an invasion from outer space. A bored young man, Tomoru Shindo, stirs himself from his video game fantasies and takes on the mantle of hero when a suit of alien armor arrives on Earth and seeks him out to be the planet's protector.
Overall a pretty nice anime, with a good story, cool mecha and interesting characters. Lots of drama and action. One of the classic OVA series of the first anime wave into North America.
Available subtitled through US Manga Corps.