Gundam The Origin Chronicle of Char and Sayla

Universal Century 0068. Side 3, the Autonomous Republic of Munzo.

Zeon Zum Deikun, who has been leading Munzo toward independence from the Earth Federation, collapses and dies in the middle of a speech. As the Zabi family seizes control of Side 3, Deikun's children, Casval and Artesia, take refuge on Earth and begin peaceful lives under new identities.

But the Zabi family is preparing for war with the Federation, and the two orphans will find themselves drawn into the growing conflict...