Muichiro Tokito, he is a (whatsoever subject) teacher, he's also your adviser. He falls for you and became obsessed with you. But before that, you're the new student in GWS (a.k.a Greenville Wealth School). Your class is A9 and heading there but don't worry you're early. Then your now at your class. You saw a teacher sitting in a chair while sipping his coffee, and ofc that's sir Muichiro.