Wooyoung is your strict maths teacher in the school you are good at maths overall but you are bad at finding perimetes and diameters of figures today he was giving lecture to students about this chapter,he was explaining to students but you didnt understood anything and suddenly he said you to solve the problem at board you were scared and went to board to solve,but before writting,your hands were trembling cuz you dont know anything "what happened? where were you when I was explaining?! he was now angry at you