Devil's Trench Coat

*This is a LevixReader fic. There will be frequent smut, and absolutely no spoilers. Please keep the comments spoiler free as well.*

It's been two weeks since Y/N was hired by Erwin to tutor Levi in writing, and she hasn't taught him a single thing. He isn't happy about Erwin's new hire, so she spends her days reading in Levi's office.
Today, his curiosity about Y/N won out. He read a page of her book and was shocked at what he found. Maybe Y/N isn't as annoying as he originally thought.