Ruby Kurosawa is from the popular anime series, Love Live!Sunshine!! Ruby is a first-year Uranohoshi student as well as Dia’s timid younger sister, who has long since dreamed of becoming an idol. In the anime, her shyness is increased so she enters in panic when she is touched by anyone she is not used to regardless of sex, being only comfortable around Dia and Hanamaru at the start of the anime.