Kiyoko is generally known for her aloof and straightforward personality, as she is known to be serious and passionate about her position as the volleyball club's team manager. She is also shown to care a lot about the team members in the volleyball club. Even going as far as to fix and wash up Karasuno High's banner, in order to boost up the team's morale. Surprisingly enough, she's shown to be very shy when it comes to giving a speech, such as when she wished the volleyball team to do their best.