You know how sometimes you'll misplace your glasses only to eventually realize that they were on top of your head the whole time? Or you'll lose your car keys only to eventually find them on top of your head? Well, Kaede's dog Pesu has gone missing and fe's out putting flyers up and stuff, not yet having realized that--you know it--fe's been sitting on top of feir head. It's simple but effective in its humor, with the bit about the old man being the funniest part.
They use a shading technique that I usually associate with carvings--a bunch of parallel lines.