Hiori is shown to be a polite young man. He is very friendly towards Isagi and Nanase, providing useful information after their match, as well as giving Isagi advice during the game. He is also very insightful, being able to break down complex subjects into more casual examples, as well as provide useful hints and tips on how to perform better. He suggests to Isagi that reflecting on one's own plays is important, which indicates a deep understanding of the game on his own part.