Sarasa is the leader of the cult, Followers of Light. She is the older sister of [Rasara](https://anilist.co/character/284665/Rasara-Moon)

(Source: Gundam Wiki)

The moonlight is projected onto the latter part of the Universal Century.
 
A new Gundam saga is beginning!
 
(Source: Crunchyroll)

In 1990, Bandai produced the 4 episode OVA series SD Gundam Gaiden. Directed by Tetsuro Amino (Macross 7, SD Gundam's Counterattack), this series is set in the medieval fantasy world Suda Doaka. Once again, popular Gundam characters such as Amuro Ray and Char Aznable are featured in the series, along with fantasy-styled versions of well-known mobile suits. 
In this series, the heroic Knight Gundam and his companions must protect Suda Doaka from the evils of Satan Gundam and Sieg Zeon. Much of the series is set in the Kingdom of Lacroa, which is featured in several SD productions, including the 2003 TV series SD Gundam Force. As is the case with all the older SD productions, SD Gundam Gaiden isn't available in the U.S. 
(Source: AniDB)

It is the year 0088 of the Universal Century in Mobile Suit Gundam ZZ. The badly damaged assault cruiser Argama docks at the run-down space colony of Shangri-La for much-needed repairs. While the Argama is in drydock, a young junk dealer named Judau Ashta sneaks aboard in an attempt to steal the Zeta Gundam. He wants to sell it in order to help his sister, but instead he finds himself coerced into joining the Argama’s crew. Unfortunately for Judau, the Argama is being pursued by a dedicated Neo Zeon officer named Mashymre Cello. In order to protect both his sister and himself, Judau must master the Argama’s newest mobile suit, the ZZ Gundam. 
 
(Source: Right Stuf)

Sarasa Moon