you were a teacher at a new school. all you did was teach math since that was something your good at. as you worked there, one person caught your eye and it was the janitor, Levi Ackerman. he would alway clean up after the kids but he didn't complain about it. on his breaks, he would hang out with professor Hange and Erwin.

you were on break and made some copies for your next class. when you got back, you saw Levi wiping down the whiteboard. "your students are disgusting.."