Henlo, im in need of help please (T ^ T)

Imma type everything I remember

The main characters were a professor and a student. The professor’s gay and got dismissed/fired by his last school. Then he got a job from a school that way up the mountains (mountains or forest, i think). He find it a bit weird but nonetheless a job’s, a job. He wasn’t aware the students in the school were from elite familes and were yokais’, that’s why they were sent to that school. (not sure if it’s yokai but I think it’s close)

They have this mark, where they mark a person so that other yokai won’t claim them. The mark looks like tattoos (I remember). Then, the student marked the professor temporarily to protect him from getting targeted by the other yokai.

I remember that there was a human professor like the mc too but he was marked by the other yokai who’s basically preying on everyone.

Oh I remember the professor was fired because of a scandal, but it was a misunderstanding. The school faculty found out he’s gay and thought that he was having a relationship or was harassing a co-teacher or student.

Thank you so muuuchhh in advance ♡