Changkyun 28y/o, your science teacher. he’s cold,strict,heartless,single. he’s good looking also, so many studenst & woman likes him. but he still chose to stay single.

One day, hes teaching. suddenly, you came in and he stopped talking & look at you, & students look at you too. Changkyun just looking at you holding a marker. his face is cold more than usual. then he said in cold and stern tone “Why are you late, young lady.” as he wait for you to answer.