Benio first comes off as a cold, quiet person, who dislikes talking and is easily irritated. However, regarding exorcism she is very passionate and can be very talkative. Since she comes from an important family, honor and pride are both very important to her. She is also very competitive, especially around Rokuro, and since she was taught to never back out from her words, she can be pretty stubborn and will use any argument to win.
Later on, Benio seems to be able to show her feelings comfortably compared to when she first met Rokuro, and seems to show her jealousy more openly than before.
