The Sanguine Engine
The Sanguine Engine is a story written by Domashita Romero and illustrated by serenity_winner. It ran in Issue 29 at http://s2b2.livejournal.com/168839.html, and is mirrored at http://www.shousetsubangbang.com/mirror/the-sanguine-engine/.
From the author: "Nicholas is an inventor in everyone’s favorite setting, a kind of steampunky London, and wouldn’t you know it? He’s got a vampire in his basement. What a BOTHER."
From delicious.com: "Nicholas is an inventor, and has just discovered a starving vampire hiding in his basement."