The tagline of the project is, "…Rock is a story of grief and hope." The story depicts the dedication and drive of four bands under the Rhapsody label: the four-member rock band Pink Flag with personal trauma, the loud rock band Haru no Juujika (Spring Cross) of high school students, the folk unit Bluebird composed of childhood friends, and the EDM brother duo System of Romance (SOR).

The tagline of the project is, "…Rock is a story of grief and hope." The story depicts the dedication and drive of four bands under the Rhapsody label: the four-member rock band Pink Flag with personal trauma, the loud rock band Haru no Juujika (Spring Cross) of high school students, the folk unit Bluebird composed of childhood friends, and the EDM brother duo System of Romance (SOR).