She has been childhood friends with Nagisa Kirifuji for over ten years. Seia, another Tea Party member, is also a very precious and close friend to her, so she calls them "Nagi-chan" and "Seia-chan." Her flighty, talkative, and mischievous personality often draws out Nagisa's anger.

She almost always maintains a sense of solemnity, calmness, and elegance, but on the rare occasions when her anger boils over, she acts aggressively. Her childhood friend of over ten years, Mika Misono, is usually the primary cause of these outbursts. She addresses others using formal honorifics like "-san."

She is extremely calm and rational. She sometimes uses difficult language, making communication a challenge. She speaks formally and politely. She is close with everyone and uses formal titles when speaking to them. Her physical health is somewhat frail. She addresses others simply by their names.