Ryuukaze has long dark brown hair that reaches past her waist. Her eye colour seems to be golden brown. She wears a white shirt under a dark blue collared jacket. She also wears a mini-skirt over some tights with white sport shoes.
Rei's personality is somewhat calm and very observant. She seldom talks to people and often distances herself from big groups. She may seem cold and anti-social but she is really kindhearted on the inside. Especially to her friends.
Rei had lived in England for the first few years of her life before her parents' mysterious death. Then, she and her sister Rena, returned to their birthplace, Osaka.