Rika Mizushima

Height: 160cm
Birthday: 30 January
Blood Type: A
Zodiac Sign: Aquarius
Likes: Leonardo da Vinci.

She's Ryo's older sister and a graduate of Yokohama Minato High School.
She is a brilliant and talented woman, and while at Yokohama Minato High School, she was the school's madonna.
She has a rather eccentric personality and her dream for the future is to become a 'great person who creates history'.
She has been taking care of Ryo when her parents were busy working together, and she still keeps a warm but strict eye on him nearby.

(Source: Official Site, translated)