There was a story i read months ago. It had dark, demonic, possessive, top dean. Who tortured sam into needing/agreeing with him. Sam became childlike in his attitude, did not care that dean killed and tortured people, and he drew pictures in the blood. Had control over his powers, (a man who walked into the bar dean was having his fun in, was let go cause sam called him an innocent). Possible wincest, and i believe this was a series of oneshots, or just a chapter fic (about 4 parts maybe more added). Does anyone remember/know this story.
Thanks.