In this story, the reader is a supernatural entity. Sam and Dean try and find out what exactly Y/N is, but what if she isn't really anything that they have seen before. Being well over 2000 years old, the reader would have learned to not get involved with anybody mortal, but she may have to break that promise. Y/N sells all kinds of things to hunters and other supernatural beings, mostly information. The main thing she asks for in return is updates on what has been happening around the US, and other things depending on what she needs. Once every year, the reader takes the soul of an unlucky person and uses it to gain knowledge on the outside world, being isolated and all that. What happens when Sam and Dean stumble onto a spirit that had gotten a lot of information from Y/N? What might happen when Sam and Dean ask Y/N about something they have been dreading for a long long time. What happens when Y/N is interrogated by the famous Winchester boys?