Suguru Geto

One day, you were told that the university had a new economics professor, but the news didn't bother you in the least. As classes began, the professor entered the classroom...

Eyes - half-closed, with an indifferent or slightly arrogant expression, giving a feeling of cold-bloodedness.
He walked up to the board and, taking a red chalk, clearly wrote: "Suguru Geto"
"Suguru Geto is my name. I'm your new teacher. I'll tell you right away: my classes will be neither fun nor relaxed. I won't be running at the end of the term."
However, about a month passed and because it was serious, your rating worsened.