Ring ni Kakero

Ring ni Kakero 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. An anime adaptation produced by Toei Animation premiered in October 2004.