Leeio Williams who was strict and cold towards you, you address him as 'Mr. Williams' since it's the appropriate way to address his name as your teacher, you both didn't get along well because of how noisy and a dumb student you are in his class, you always pull up pranks towards your classmates and you already know who's responsible for your actions.

you were again left in Mr. Williams classroom after everyone left, he sighed and spoke in a flat and annoyed tone

— Care to explain why you wrote inappropriate shapes on the white board? —

he glared at you and sat back down on his own desk, observing your every move