| Yu Kozuki | |
|---|---|
 | |
|
Birthday |
April 4 |
|
Blood Type |
O |
Yū is Miyu's astrophysicist father who is helping his wife with her work, and is hired by NASA, along with his wife, Miki, thus having to leave for the United States. He arranges his daughter, Miyu, to live with the Saionjis. He became interested in astrophysics in order to further his wife's dream in becoming an astronaut and traveling in space. In episode 40, it is said that Yu had met Miki when they were in college and had asked her to join the astronomy club.