Sanshirou Sugata

Sanshiro is the series' protagonist and a PlaWres modeler. His PlaWrestler, Juohmaru (柔王丸 Jūōmaru), is custom-made. Initially, Sanshiro is an ambitious rookie, and his overconfidence and brashness leads to several mistakes that he sometimes does not get out of. As the series, progresses, Sanshiro learns to think more rationally and consider the benefit of others rather than only his own.

(Source: Wikipedia)