In the year UC 0071, three years after escaping the Zabi faction on an Ocean Cargo ship, Artesia and Casval are living happily in Andalusia, Spain, Earth under the identities of Sayla Mass and Éduoard Mass, respectively; masquerading as the children of Don Teabolo Mass, a long time friend of their father Zeon Zum Deikun.
- Year: 2015
- Country: Japan
- Genre: Animation, Action, Science Fiction
- Studio: SUNRISE
- Keyword: future, prequel, space, mecha, piloted robot, alternate history, based on manga, original video animation (ova), gundam
- Director: Yoshikazu Yasuhiko, Takashi Imanishi
- Cast: Mayumi Tanaka, Shuichi Ikeda, Akeno Watanabe, Ayumi Tsunematsu, Banjo Ginga, Chafurin