( credits to @_leeknvw. I just changed the story a bit :) )

Your old physics teacher, Mr. Liam had left due to problems according to him.

You were sitting at your seat, your stuff on your desk in front of you. You were sitting quietly playing with your bracelets that you were wearing while the others were annoyingly loud talking.

As you were sitting you overheard from the students behind you that the teacher was firm and strict and had his own rules. You also heard that he has a soft spot for his favourite student..I'd he even has one. Some people say he chooses from one of the students to be his assistant in class for the rest of the semester.

As you continued sitting still playing with your bracelets while the class was loudly talking. Suddenly the class door opens and a teacher entered. You assumed it's your new physics teacher. And you were correct.

The teacher entered the class with a firm and cold expression on his face. He walked to his desk and put his stuff including his laptop and his files before turning to the class and speaking.