Lunar (слэш)

The Winchesters don't realize how close it is to the full moon when they stumble across the case at the college, nor do they realize what that means to the god they meet. Especially once Sam catches his eye.
First chapter is non-con due to drugged incense, chapters 2 and 3 are dub-con. The plot doesn't start moving until Chapter 4 so you can skip the first three chapters and not lose anything of the story. Also there is blood-play throughout the story.