This was the first idea I had for a comic to put on the Internet.
I used to have a set of four black Copic Multiliner SP markers (0.2mm, 0.35mm, 0.5mm, and a large double-ended one). When I went to draw this comic, I discovered that I still have a set of four black Copic Multiliner SP markers—but I now have two 0.5mm and two 0.2mm instead!