Kanna is soft-spoken and quiet and demonstrates most of her emotions through minute expressions. Despite being technically older than her human peers, Kanna behaves no differently from a human child as she easily tires of routine and enjoys playing games. However, despite her generally unexpressed and implicit demeanor, Kanna is not without emotion, indicated when she has a sudden outburst and cries when Riko Saikawa initially views Kanna as a rival instead of being friends.