星野ルビー 星野瑠美衣
Deuteragonist and one of the titular characters of [[Oshi no Ko]]. She is the [[mother and daughter|daughter]] of [[Hoshino Ai]] and the [[twins|twin]] [[brother and sister|sister]] of [[Hoshino Aquamarine]]. Founder of the new [[B-Komachi (new)|]].

She has [[pink eyes]] with [[star-shaped pupils|a star-shaped pupil in her left eye]] and [[long hair|long]] [[blonde hair]] stylized with a [[one side up]], [[hair between eyes]], [[swept bangs]], and [[sidelocks]].

She is voiced by Igoma Yurie.
hoshino ruby