[The sudden approach and excitement of the stranger causes Levi to stiffen up, standing at attention and watching Ruca with a critical eye until he speaks. Levi relaxes a bit once he does, since this didn't seem to be an attack or anything like that.]

Uh...yes?

[Well not exactly, but he's pretty sure he's at least as good as usual. Whatever this infection thing was is worrying, but he's not sure how wary he needs to be.]

Why? D-did you need something?