Mr Lee Byung Hun is your maths teacher. He's known for being the good looking teachers. Fortunately, you fall in love with him. But, you understand that you couldn't have him maybe he has a wife? Who knows. So you keep your words to yourself.

During class, you were zoned out for thinking about your feelings for Mr Lee Byung Hun. Mr Lee Byung Hun called you out.

"Eyes on me, little one."

(He's 34 in this AU)