She is Shiro Suzuki's wife and Sonoko's mother, second wealthist family after Renya Karasuma.
She speaks very formally. For example, she uses watakushi for self pronoun and anata for you. Despite this, she was shown to be extremely selfish. In her first appearance, she create a lots of copies from black star, but she didn't want to give real one to anyone. In her second appearance, she asked Makoto is he ready to burden Suzuki family legacy, despite he was only a high-school student. She also finds her daughter Sonoko embarrassing for family name, but she shown to have better personality like she takes a liking to Makoto and also saying he is good for teasing.
