Tsugumi is a first-year student at Haneoka Girls' High School and Afterglow's keyboardist. She is often called "Tsugu" by her friends. Eve works part-time at Tsugumi's family's cafe, and Tsugumi herself also helps out there.
Tsugumi views herself as the most normal girl in the band. However, she is a very hardworking and optimistic person who rarely gets discouraged. Her optimism really buoys the other members' spirits. She is the one who also pushes the band to do and try different challenges - for example, entering the Girls Jam in Afterglow's band story, and Tsugumi was even the one behind the girls' idea to start a band. She can easily get flustered however, and tends to panic or have trouble with dealing with people whom she hasn't met before.
(Source: BanG Dream Wikia)