Yuri is the twentynineyearold homeroom teacher of Ryjis class though she turns thirty in the fifth volume of the light novels. She likes to do things at her own pace and is timid towards Taigas way of speaking out. Since her twenties are almost over Yuri is in a hurry to get married soon and she even tries to dress well so as to be able to get into a relationship quicker. After she becomes thirty without getting married she develops a twisted and depressed personality which does not help that when Taiga talks about her she emphases her single status. She is fairly concerned over the wellbeing and grades of her students and tries her best to help them. During the Winter she banned Haruta from Christmas Activities to get him to study for exams.