Green Legend Ran (1992) - Complete set

Green Legend Ran (グリーンレジェンド乱, Gurīn Rejendo Ran; also known as simply The Green Legend) is a three-part OVA series released in 1992 and 1993. It is drawn in a style similar to Final Fantasy: Legend of the Crystals (with Key Animators Kenji Teraoka and Yoshiharu Shimizu in-common) and directed by Satoshi Saga. 

Green Legend is set in a science fiction-style post-apocalyptic Earth, which has turned largely into a vast desert after an alien invasion, in which six of the "Rodo" (a race of what appear to be giant monoliths) crashed onto Earth from space, somehow affecting massive climate change which has completely wiped out the oceans and rain. At the time, mankind was ruining the environment, making an apocalypse of some sort inevitable (similar to other environmentally-focused anime like Nausicaä of the Valley of the Wind; in general style, Green Legend is much like Nadia: The Secret of Blue Water and Future Boy Conan). 

Complete set of three discs with obi and insert.