This is truly amazing Your whole gallery is! Everything feels so unique..and inspiring C: You are perhaps one of the very few people who can totally make someone do a 180 degrees turn in the way they perceive art. I hope that one day i could be as great as you and help somebody else as well.. Thank you .
Yes, I used maru pen to do it. (It's a kind of pen nib which can make a very thin line) About the process, first I drew a circle guideline with a pencil first, then I hatched a short thin line with the pen in the same direction as the guideline