One of the main characters of the OAV "Aim for the Top 2! Diebuster".
Lark Melk Marre is a member of the Fraternity, a group of young kids known as "Topless" who have the ability to pilot Buster Machines, special weapons created to defend humanity from the threat of space monsters. On a trip to Mars Lark encounters the young girl Nono, who is so impressed by her skill she wants to think of Lark as her "Big Sister." Lark, while reluctant at first, ends up taking Nono with her to the Fraternity and eventually becomes close friends with her.