Ruby is a first-year student who is almost always nearby her good friend, Hanamaru.

She has an elder sister, who is Kurosawa Dia.

Personality

Ruby has never talked to any males besides her father before, so she has always been bad at dealing with the male gender. She is fearful, shy, and easily upset, but still has a tough interior, forged by her role as a girl in a rich, well-known family.