Ashita no Joe, Ganbare Genki Recommendations
Both series are underrated boxing legends. Ashita No Joe revolves around an orphan wanderer named Joe whose sent to juvy & learns to box for the sake of defeating his rival Toru Rikiishi. Ganbare Genki is about a father & his son Genki who wish to become world champions. The story for Genki is just as tragic as Ashita No Joe as Genki trains since the age of 5 to fulfill his father's wish of becoming a champion. Not many episodes are available for Genki but the manga will have to do until this series gets properly subtitled.