Ruby Kurosawa is a fictional character from the anime series Love Live! Sunshine!!. She is a first-year student at Uranohoshi Girls' High School and a member of the school idol group Aqours. Ruby is known for her shy and timid personality, often relying on her older sister, Dia, for support. Despite her initial nervousness, she is passionate about becoming a school idol and works hard to overcome her insecurities. Her character is loved for her adorable demeanor and determination, playing a key role in the group's journey to success in the competitive world of school idols.