Yuri Koigakubo

Yuri likes to do things at her own pace and is sometimes timid when students speak out. Since her twenties are almost over, Yuri is in a hurry to get married soon. After she becomes thirty without getting married, she develops a twisted and depressed personality (for example when she slipped the wrestling match paper into the drawing during the cultural festival). This is further developed by Taiga because when Taiga talks about her, she emphasizes her single status. She has an interest in real estate which is sort of a crutch for her single status. Despite this, at times she is shown to be kind, like when she was praising her students for helping out with Christmas.