Catherine Maiko Suma
About
Age: 15
Birthday: October 23rd
Horoscope: Libra
Blood Type: A
Height: 138cm
Instrument: Piano
She is Takenomaru's (most likely half) little sister, but they haven't seen each other for a long time. They resemble each other a bit... both of them have the same hair color, but, her eyes are green while his are red. (Source:Wikipedia)