Also known as: AOZ, アドバンス・オブ・Z
Advance of Zeta: The Flag of the Titans (also known simply as AOZ) is a Zeta Gundam spin-off showing earlier development and Prototype Designs of the Titans Mobile Suit Mecha. It has mechanical designs by Kenki Fujioka.
AOZ was serialized in the monthly publications Dengeki Hobby Magazine as a photo-novel and in Dengeki Daioh as a manga from 2002 to 2008.