Levi got lunch with his squad, which turned into an afternoon, and he forgot about cleaning Hange’s lab until it was dark out (and cleaning that place is a lost cause without natural light). He went the next morning and opened the door, expecting to find Hange smug from her successful distraction and clucking at him for being sloppy and a clean-freak.
Instead he found her running amok, dumping all her junk into one corner of the room to try to protect it from Levi’s (ruthless) incursion while babbling to Moblit about titan toenails. The gloating never came, but Levi found that the prevalence of rumors about him was inversely proportional to the time he spent hanging out with the Survey Corps.
@sekhmet06, thank you!! I had a lot of fun writing this =D