 This subculture was named after a boutique in Harajuku.Other parts of Tokyo such as Roppongi and Ginza have been centers of Japanese popular culture, and many zoku have been named after sites in these localities.Another very significant group of the 1980s was the "kurisutaru zoku" (crystal tribe), which were branded a social group after the success of the novel "Nantonaku Kurisutaru" ("Somewhat Crystal").