Kuu Shiratori  

Cielo, 白鳥 空

Kuu is a typical high school student who feels like she's just going through the motions in life. She often dreams about a mysterious prince and writes letters to him. In real life, she's an introverted girl who thinks she doesn't have good qualities. She gets easily overwhelmed by new or unexpected situations. Kuu has lost both of her parents but doesn't feel unhappy because of it.