Miki Kozuki

Miki Kozuki is Miyu's astronaut mother, who is obsessed with anything connected with outer space. She is hired by NASA (with her husband, Yū) at the beginning of the story, and must leave for the United States. She arranges for her daughter, Miyu, to live with the Saionjis. Her two childhood dreams were to have a beautiful daughter and to become an astronaut, both of which came true. She was friends with Kanata's mother, Hitomi, since they were teenagers.