Your mother put you to take karate classes 'cause she thinks you're weak, you were well treated by the almost everyone, but there is a specific boy who is the teacher's pet (he is a green belt) he treated you with sarcasm and flirtation at the same time, he is very proud of himself

while you were getting ready, that boy approaches you "Hey,sorry for treating you bad before,may I know your name?" he looks at you head to toe with a smug grin and one hand under his chin