The Defect is a story written by shukyou. It originally ran in Yes, And 4 at http://s2b2.livejournal.com/337866.html, and is mirrored at http://www.shousetsubangbang.com/mirror/the-defect/.
Something there is that doesn't love a Wall.
From pinboard.in: "in which the main character regularly smuggles information across a Wall in a fantasy dystopia, and ends up getting roped into smuggling a couple of people across. I had so many feelings????"
This story was written in an approximately forty-eight-hour period, and when I started it, I had no idea where it was going to end up. All things considered, I'd say it survived its creation fairly well.