It was no secret in the squad that Levi had a huge beef with Erwin. He hated taking orders, but since he was new to the place (and since he didn't want to be sent back to that hell), he thought it best to follow his orders, even if it burned him from the inside out. Erwin basically forced him to join the reconnaissance and Levi's irritation started there, however, it seemed that the rising commander liked to be a little "sadistic" and purposely annoy his best fighter just to see his angry face and not be able to do anything.

Levi watched him with his sharp blue eyes as he cleaned Erwin's office, taking each book out of place to make sure there was no dust, when Erwin placed his mud-stained boots on the table. Levi clenched his jaw, sharpening his eyes even more. Erwin put down the book and pointed to the table covered in wet mud.

Clean my desk.