Saki Toudou is a EFCN officer serving as captain of the experimental wave-motion ship Ginga. She is the daughter of commander in-chief Heikuro Toudou and Chiaki Toudou. Following the Gatlantis War she's been using Ginga to restore the destroyed Moon.

Saki Toudou was born on Earth on November 14, 2176. She lived happily with her family until 2193 when the Great Garmillas Empire began its bombing of Earth.

Probably due to her father Heikuro's important position within the United Nations, the Toudou family was among the first to be evacuated to the underground cities. Due to this Chiaki's mental health had a rapid decline which culminated in her committing suicide on April 20, 2193.

(Source: Yamato Wiki)