統神 璃子

Sixteen years old, a first-year at the same school as Mina. She has no parents and lives alone—save for one butler—in the largest, most historic mansion in the city. Riko is a quiet girl, reclusive and disinterested in the world around her. She expends no effort to make friends at school, and she actively avoids interacting with the other students. A family secret seems to be at the heart of her antisocial tendencies, however. [From MangaGamer]