Kentarō Aoi (葵剣太郎, Aoi Kentarō) is the jolly, talkative and energetic captain of Rokkaku. What makes him stand out is that he is only a freshman, and some teams are doubtful of his capabilities as a team captain. However, despite being a rookie, Aoi is a high-caliber player, who were able to match up with Kaidō Kaoru (manga) and Echizen Ryoma (anime).