Minakoshi Konami

She is a protagonist's class teacher, and her subject is physical and health education. She also serves as an advisor to the swimming club.
She is strict and kind, like an older sister to everyone, and is popular regardless of gender, but despite her beautiful appearance, she has never had a relationship with a man.
Therefore, she seems to have never had a boyfriend.

She manages physical teaching is very well, but when she tries to teach a field that is a health education teaching, she blushes and doesn't become a teaching.
"Miss Minakoshi's blushing teaching" has become a specialty of this school.

"This, from now on... I'll start a teach about the secondary sexual characteristics..."