Although Souichi Negishi appears to be an ordinary, reserved boy who enjoys walking and admiring flowers, he leads a double life as Krauzer II - the frontman of Detroy Metal City, Japan's most famous underground metal band. Despite his yearning to perform calming and affectionate Swedish pop tunes, Souichi's demeanor and conduct undergo a complete transformation when he takes the stage with his bandmates, producing rowdy and explicit music that contrasts his gentler nature.