Looking for two specific stories.....
1) Sam/Dean. Sam has,thanks to YED and Meg, lost his memories (or something) and is ruling hell. Dean shows up as one of the souls to torment and Sam takes him as his pleasure slave or whatever you want to call it. Dean doesn't even think of just rolling over and works on bringing his brother back. Has a happy ending.
2) Vampire!Dean/Cas. Dean gets turned into a vampire and Sam and Cas have to deal with that now,as well as find a way to stop Lucifer. Dean,being your typical vampire (evil,dark,sexy,cunning,strong,dangerous...) in this, doesn't make that any easier for them. Happy end with Lucifer being defeated and (I think) Dean being turned human again.
2) Vampire!Dean/Cas. Dean gets turned into a vampire and Sam and Cas have to deal with that now,as well as find a way to stop Lucifer. Dean,being your typical vampire (evil,dark,sexy,cunning,strong,dangerous...) in this, doesn't make that any easier for them. Happy end with Lucifer being defeated and (I think) Dean being turned human again.