Soyo Nagasaki is a character from the multimedia franchise BanG Dream!, particularly known for being a member of the band Morfonica. She is the band's bassist and brings a calm and composed personality to the group, though she has a complex and strategic side. Soyo is often seen supporting her friends while also being deeply invested in the band’s success. Her role involves navigating social dynamics within Morfonica, making her a key figure in the story’s progression and character interactions.