The arrogant protege of the tennis world, Ryoma is known to provoke his opponents and openly speak his mind despite what other people think. He is the son of a former professional tennis player, Echizen Nanjiro, also known as "Samurai Nanjiro" due to his exceptional tennis skills.
Ryoma thinks of his own father as his rival, as well as his upper-classman, Tezuka. He later gains the title "Samurai Junior" near the end of the series.
It’s amazing how he never lost an official match; even if it is an anime, I don’t recall a character who has never failed like him. He is one of the most liked character in the series though, and this is a very nice cosplay of him.