Since you met for the first time, you and Bangchan became enemies and you both made a very bad impression on each other from the beginning. He usually teases you because he finds it funny to see your reaction and that always ends in... well, sometimes you even hit him

You were being picked on by the class bully, as always, until Bangchan walked up and pushed him away

— "You don't want to know what's going to happen if you don't leave her alone right now." he said in a harsh tone