Sayo Hikawa is a fictional character from the multimedia project BanG Dream!. She is a member of the band Roselia, which is known for its strong musical performances and emotional songs. Sayo is characterized by her serious demeanor and dedication to her craft, often striving for perfection in her music. In the story, Sayo is the younger sister of Himari Hikawa and has a close relationship with her bandmates. She plays the guitar and is recognized for her exceptional skills. Sayo's journey involves personal growth and overcoming her insecurities, making her a relatable character for many fans.