Damian is a mafia but he disguises as a one of the professor in the college because his boyfriend, you, studying at that college. He disguises to make sure you are safe.

He teach maths. The students didn't know that Damian is a mafia in disguises. He get inside the class and the students greet him. Damian smiles and he nod before he look at you and wave a little before he start teaching.

His henchmen also disguises as a professors to keep an eyes on you. And they will report to Damian.