I'm betting my left leg it's the dean or atleast someone working in the school

I also feel the same...but the one of the students who actually sleep all the time he's suspicious too..

Yoooo Nagisa is suspicious too he has some crazy secret power or something

Soooo trueeee (〜￣△￣)〜

I'm betting Vice Principal.

Let me add the previous homeroom teacher(๑•ㅂ•)و✧

He realized their potential so he wrote it on note but we lost it. From then on he tried to make the class invincible no matter what or it’s because other teacher bullying him so much he wants revenge.