Rinko Shirokane is a member of the band Roselia in BanG Dream!. She has a weak and passive personality, often led by strong-willed members like Yukina and Sayo. Despite her shyness and tendency to avoid crowds, she possesses a kind, gentle nature with healing qualities that make others reliant on her mentally. As student council president, she interacts frequently with Sayo Hikawa, who often steps in to help when Rinko freezes up in social situations. Rinko shows courage and passion beneath her timid exterior, especially in band matters, and has close bonds with members like Ako Udagawa.