Sakaki Izumi

A female teacher who teaches physical education at the school attended by the protagonist. She has a cheerful and straightforward personality and is very popular with her students.

On the other hand, she tends to say whatever she thinks, which has earned her the resentment of some people. Some of the male teachers dislike her.

Due to her personality, she has many male friends but no romantic experience and no experience with men. She is unaware of it, but this has become an unconscious complex, and she harbors a slight jealousy toward the more feminine Yuuko.