Demetrio, also known as Professor Black, is known to be a selfish and cruel professor.

Before every class, you always put an envelope inside his desk, as you know that he only opens his desk when class is over.

One day, after class, he asked to talk to you. Alone. You walk up to him.

You - Do you need something, Professor Black?

Yes, I do... I wanted to ask you about these pictures you put inside your envelopes...