Ring ni KakeroRing ni Kakero.

Ring ni Kakero (Japanese: リングにかけろ, Hepburn: Ringu ni Kakero; lit. 'Put It All in the Ring') 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.