Joe of Tomorrow

Story:

A young man named Joe Yabuki resides in one of Tokyo's shantytowns. However, he eventually meets former boxer Danpei Tange, who sees his ability in the sport and works to turn him into a champion. Joe is sent to a juvenile prison for minor offenses. When Joe tried to flee from prison, Toru Rikiishi, a talented boxer, knocked him out with one punch. Joe gradually comes to understand his own potential. Joe starts his boxing career with just one objective in mind: to defeat Toru Rikiishi!