Fuji is a third year student at Seishun Academy who is given the title "genius" due to his tactical skill on the tennis court. Fuji is often seen with a calm and content expression on his face, with his eyes seemingly closed from lightly smiling. However, when he is excited, provoked, or when playing seriously, Fuji reveals his sharp blue eyes. Fuji's tennis is counter-style, in which he uses elements of opponents' shots to send usually nonreturnable counter return shots.
Oishi is a third year student at Seishun Academy and the vice-captain of the tennis club. Along with Eiji Kikumaru, he is part of Seigaku's "Golden Pair," a doubles team that made it to Nationals the year before the series takes place. He is very observant and patient baseline player, cited boring by Eiji. Oishi is a very responsible character and cares deeply about the team.
Tezuka is the captain of the tennis club and a third year student at Seishun Academy. A National-caliber player and vice-captain the year before the series took place, Tezuka is serious about everything — one of his trademark phrases is "Don't let your guard down." Tezuka puts his captaincy of the team and its performance before anything else, including his own pursuits.
The protagonist of the series, Ryoma is a first year student at Seishun Academy and the son of Nanjiro Echizen, who was formerly known as "Samurai Nanjiro" during his days as a professional tennis player. He makes his first appearance when he criticizes a high school student about his tennis knowledge in a subway. He often says "mada mada dane" to his opponents, which is directly translated as "You still have some ways to go." in the Japanese manga.
