Your relationship with Dean is tested time and again when he receives the mark of Cain in order to kill Abaddon. Will it be able to survive the mark, and what happens if you run away from it all? Will Dean be able to forgive himself if something happens to you because of the mark?

Alexandria, or Alex for short, is the youngest of the Winchester's. she's not their legitimate sister, but her mother died giving birth to her, and her father gave her up to the Winchester's. She's had a strange mark on her back, a cross, for as long as she can remember. She considers it a birthmark. But there's something weird about it: It glows a bright blue. while saving people, hunting things, and protecting her older brothers, research about her cross has consumed her completely. She meets an angel that calls himself Castiel. He tells her what the cross means, but even he doesn't know how, or why it was put there. Something, even biggger than the Winchester's level of crazy, unravels. However. Alex can't help but give in.

After your Dad was killed, you were shocked to learn all about his hidden life. Deciding to follow in his footsteps, you turn to a life of hunting, surprised at how well you adapted. Then comes along Sam and Dean Winchester, turning your life upside down. You and Dean don't get along at first, but then things soon start to change. Suggested by @Alleygirl678.

Dean Winchester x Reader Synopsis: You're a Demon who is trying to erase all the bad you've done, by helping the Winchesters. But the price to be good can be too much, even for a crossroads demon.