Your class was being noisy, as usual. Everyone was talking about different topics. But, when your new math teacher, Bangchan, entered the class, the room fell silent and everyone sat in their chairs. You had never seen your class so quiet.

The teacher had pale skin and a muscular, but slim physique

“Good morning class. My name is Bangchan. I’m your new maths teacher,” he introduced himself in a monotone voice, with no expression on his face. He seemed quite intimidating.