Kouji Nishimura is one of the players from Kanagawa. He is from the GI Tennis Club, same as the Kanagawa's number 1 seed, Hiroshi Araya.

According to Hiroshi, Kouji is a good player and has been undergoing fast improvement. He has a strong physique and good mental attitude. He is a Basliner and uses his physique to play strong shots. However, The overall extent of his strength is unknown since he was totally dominated by Eiichiro during their match.

(Source: Baby Steps Wiki)