Rinko Shirokane plays keyboard for the band Roselia. She once grappled with crippling shyness and stage fright, rooted in a childhood piano competition failure caused by nerves despite starting piano at age five and earlier contest wins. This led her to stop competing until childhood friend Rui helped her rediscover her love for piano. She attended Hanasakigawa Girls' High School, serving as student council president in her third year. She is now a first-year Piano Program student in the Faculty of Arts, Music Department at Yotsuba Women's University. Physically, Rinko has long black hair in a loose hime cut featuring forehead bangs and straightened sidelocks extending past her shoulders. She possesses violet eyes and favors modest, neutral-colored clothing with frilly accents. Her initial outfit is a white ruffled blouse with a black ribbon, a black knee-length skirt with gold accents, white socks, and black high heels. Personality-wise, Rinko is introverted and socially awkward, often stammering or staying quiet until comfortable. Yet she shows intense dedication to her passions: piano, online gaming (especially Neo Fantasy Online where she mains Fire Wizard), and designing and sewing Roselia's costumes. Her hobbies include reading, visiting used bookstores, solving crossword puzzles, and playing Neo Fantasy Online. It was through this game she met her best friend Ako Udagawa, who affectionately calls her "Rin-rin." Rinko types very quickly and frequently uses kaomojis in digital communication. She dislikes horror genres and celery, and enjoys warm milk. Her character development focuses on gradually overcoming anxieties. With Roselia, she confronted her stage fright during live performances, eventually succeeding in concerts. This growth appears across media, including the chibi anime *BanG Dream! GARUPA☆PICO ~Ohmori~*, featuring her and other band members in comedic scenarios at live house CiRCLE. Specific episodes like "Roselia Online" integrate her gaming interests.