Hikawa Sayo is a talented pianist and a member of the band Roselia in the multimedia project BanG Dream!. She is known for her quiet and reserved demeanor, often preferring to express herself through her music rather than words. Sayo is dedicated to her craft, spending countless hours honing her skills and creating beautiful melodies. As the younger sister of Hikawa Hina, she often feels overshadowed but is determined to make her own mark in the world of music. Sayo values her friendships deeply, despite her shyness, and aspires to be a source of support for her bandmates. Her journey in BanG Dream! is one of self-discovery, as she learns to open up and embrace her passion for music while building stronger connections with those around her.