RoemarDragneel:
To Levi: Why do you like everything perfectly clean not even a single tiny tiny tiny super tiny that even the human eyes can see, your still not satisfied?

Levi: Because some brats don't know how to clean correctly. And I'm not satisfied until I'm sure that all of the dirt is gone and the room will be presentable.

Hanji: I didn't know that we were showing off our headquarters so often, Levi.

Levi: *glares* You never know if someone important will show up.