Neyvalan

As far she doesn't have a crush on him but dont know about the math teacher since he is intentionally making things difficult for her.Even his friends asked her why he is bothering her that much

I watched the first 4 episodes and there she says she is 18 years old so she is an adult,even though having a student-teacher relationship is cliche she still can be paired with them especially the math one since she is an adult and he might be around 22-23 since degree takes 3 years and masters takes 2 years (if he started his degree when he was 18-19 years old) the age gap will be 6-7 years and also since it's already said in the drama that the math teacher is a prodigy he might have skipped some classes then there wont be that much of an agegap and one thing that they can bring in the drama is the childhood connection that we see in almost every kdrama,like he knew who she is and that's why he is annoying her so much since she didnt recognise him, But ya this is just a pov have to wait and watch the show to see how things will unravel.I am enjoying it very much