I may be one of the very few, but I love this. I love the subject and the portrayal of Draco. I find it actually quite hot, even more so because it's so rarely done. But then, I've a penchant for non-con, Death Eaters and chan, next to a plethorea of other kinks (in fanart/fanfic, mind).
I also like the contrast between them: their colouring and the smoothness of Draco against the ruggedness of Fenrir. The bonds on Draco and the way they chafe his skin are very well done. All in all, this is quite excellent!