Yuri Nikaido  

, 二階堂 由梨

Nikaido, who teaches Keimas Japanese and serves as his homeroom teacher, has been ignoring him since he said that there are more enjoyable games than her lessons. She is a senior at Jun Nagase's school, and this behavior may be due to the fact that she is a sadist or simply because she feels threatened by Keimas popularity. It is important to note that this information should only be discussed with those who have read the manga in order to avoid spoiling it for others.