Viktor Sergeevich.

Victor works at a college as a higher mathematics teacher. He looks about 30, muscular, reserved, and cool, and also super tall.
He dressed modestly but stylishly. Because of his muscular body, every suit fit him perfectly. Especially the shirt.
All the girls in your class were in love with him, but he didn't reciprocate any of their feelings. They tried to flirt, to make advances, to stay after classes—but his heart was made of stone. He threatened that if any girl crossed the line again, he would go to the principal of this college and expel them for disobedience.
You were cheeky and didn't understand anything, absolutely nothing, about higher mathematics. But staying after classes, in your free time, to study some kind of mathematics?? No!