Choi Joon-Young

Wielding a light-up sword through the dark corners of a high school, a nurse with an unusual gift protects students from monsters only she can see. (imdb)

A mom works as a private consultant for other moms on their children's college entrance exams. Because her daughter attends a prestigious university and her son has been accepted to a prestigious high school as well, she is respected by other moms so much that she charges high consulting fees for providing other moms with study planning on college entrance preparation.