One of the main characters of [[Love Live! Sunshine!!]]. She frightens easily (and tends to emit a distinctive "pigii!" shriek), but loves school idols and always dreamed of becoming one. Ruby is the shy younger sister of [[Kurosawa Dia]], and a close friend with [[Kunikida Hanamaru]].

Ruby is a member of the Aqours sub-unit [[cyaron! (love live!)|CYaRon!]], alongside [[Takami Chika]] and [[Watanabe You]].

She has [[aqua eyes]] and [[red hair|red]] [[two side up]].

Voiced by [[Furihata Ai]].
黒澤ルビィ Ruby_Kurosawa