Ayumu's Homeroom teacher. She has a "peace at any price" principle, leading her to deny Ayumu's declaration of teasing by passing it off as Ayumu's fault (Volume 6 of the manga). She is shown as very sympathetic toward Katsumi and Manami. In the drama, she dates Katsumi; to keep anyone else from finding out (save for Manami, who had already figured it out), she frames Ayumu by blaming her for all the bullying that goes on at Nishikō, even though they both know full well that Ayumu is the victim, rather than the one behind it. (source: Wikipedia)