I stumbled across this drama and I was not expecting this to be good at all. The FL is smart, independent and cunning. The ML is very aware of his environment. This story portrayed correctly how student-teacher relationships should be shown. The ML had zero romantic feelings for FL while he was her teacher in college and the FL just saw him as an annoying and hard to please professor. I love love love how smart both leads are portrayed, like not academically smart necessarily but smart in the sense of forward thinking. A refreshing story. The pacing is just perfect, I am so satisfied with it.
The story is set in the working environment with flashbacks of the FL where the is ML being a difficult teacher in college.

Do give it a try.