"Not so difficult that you lost, I take it?" Maybe some slight playfulness can be heard in that little quip. If one looks closely enough, some of that playfulness may shine through on his face ever so slightly. Annoying as the buzzing may be, seeing an old acquaintance needn't be entirely serious.

Although, the same sentiment regarding curiosity is shared by Karl. The cause of the noise had actually been plaguing him a majority of the day. Few things might be capable of making a continuous sound like this. As to what might be the culprit behind this noise in particular? He has no idea.