Unicorn is a Japanese rock band formed in 1986, featuring Koichi Kawanishi on drums, Tamio Okuda on vocals and rhythm guitar, Isamu Teshima on lead guitar, Kazushi Horiuchi on bass, and Yoshiharu Abe on keyboards. Known for their dynamic sound and creative songwriting, they reunited in 2009 after a hiatus. Unicorn also performed "Feel So Moon," the opening theme for the Space Brothers anime.