Crystal King originally consisted of vocalists Monsieur Yoshisaki (ムッシュ吉崎, Musshu Yoshisaki) and Masayuki Tanaka, guitarist Michio Yamashita (山下 三智夫, Yamashita Michio), pianist Kimiharu Namakura (中村 公晴, Nakamura Kimiharu), keyboardist Hiromi Imakiire (今給黎 博美, Imakiire Hiromi), drummer Ken Kanefuku (金福 健, Kanefuku Ken), and bassist Hidetoshi Nomoto (野元 英俊, Nomoto Hidetoshi).

Other successful singles included "Shinkirō" in 1980 (750,000 copies sold), "Shojo Kōkai" (1980), "Passion-Lady" (1981), "Ceccile" (1982) and "Setouchi kōshinkyoku (IN THE MOOD)" (1984).

Internationally, the band are best known for writing and performing the first two songs of the anime Fist of the North Star, "Ai o Torimodose!!"

However, in June 1989 he lost his voice after being struck in the throat by a baseball, and never regained his original three-octave vocal range.

The rest of the band performs as Cross Road (クロスロード, Kurosu Rōdo), reuniting with Tanaka on occasion.