Oh, man! Missed this when it came out. The way I'm waiting with anticipation for the sequel to Fortress, I'm glad that I finally spotted this.

Lovely bit of a fic, filling-in a missing scene very well. Love the creepy tattoo artist and nice work on Dean's POV here. I really do so enjoy Demon-Dean, who both is and isn't Dean in this series. And the way Sam struggles with it throughout Fortress. I also liked the set-up here, with Sam drawing Dean's power directly and the effect it has. I really enjoy your world-building a great deal, and it's so nice to have self-consistency that makes sense in a fic. (I'm finding it kind of rare in canon these days.)

Thanks so much! and I'm really looking forward to your next foray into this universe. :P