Masami Kurumada
is a Japanese manga series written and illustrated by Masami Kurumada. It was published in "Weekly Shōnen Jump" between January 1977 and October 1981. The individual chapters were compiled by Shueisha into twenty-five "tankōbon" volumes. A sequel entitled "Ring ni Kakero 2" was serialized in "Super Jump" between 2000 and 2008.