|Name in Japanese||須賀 竜一|
|Romaji Translation||Suga Ryuuichi|
|Voice Actor (Japanese)||Shintarō Asanuma|
Ryuuichi Suga (須賀 竜一 Suga Ryuuichi ) was Subaru Hasegawa's old rival who always defeated him until he starts to get used to his techniques. When playing, he'd prefer to force his teammates to follow his own pace instead of cooperation.