Yukari is a beautiful woman with thick brown hair kept clipped back with side-swept bangs. She is normally dressed in feminine clothing.
Yukari has an easygoing and gentle personality, never seen in a bad mood throughout the series. Despite her husband's frequent travelling due to his work as an archaeologist, she remains committed and loving to him despite his long absences.
She is good-natured and kind to both the children at the daycare and the students in the academy.
Yukari has an infant daughter named Midori, and is married to her archaeologist husband, Yutaka, who often travels to Turkey on long archaeological excavations. Her husband's absence caused Inui to falsely believe he was dead, and combined with her gentle beauty, led him to fall in love with her. She was mildly upset with Usaida on a special occasion when Midori said her first word which referred to his name instead of "mama" or "papa". Nevertheless, she sees Usaida as a friend who once accompanied her to a maternity class in lieu of Yutaka, who was in Turkey at that time. She is curious about Usaida's love life due to his secrecy about it, and tailed him to see if he is dating someone.