Toji Tsukishima is the guitarist for the high school rock band Haru no Jūjika (Spring Cross), signed to the Rhapsody music label. The band plays loud rock music and consists of teenage members: Tsukishima, vocalist Nijiro Shisui, bassist Shion Kagami, and drummer Kosei Tayo.

He has blonde hair cut to ear length and gray eyes. His typical attire includes a scarf and jacket, reflecting his musical role. His height is 169 centimeters and weight is 58 kilograms. His birthdate is July 21, making his zodiac sign Cancer, and he has blood type B.

Tsukishima's role is confined to musical performance within the band ensemble.