Y'know, there's a quote I saw somewhere that authors of FF become writers because the fanfic they wanted didn't exist. That's pretty much the gist of this, aside from the fact that I like writing.
This is a self-insert of the Reader falling in love with Death from Supernatural because very selfishly, I love Death very much and wish he hadn't died. He is an objectively neutral character and never killed on purpose (that much, anyway) except when Lucifer put him on a leash.
So ANYWAYS, a summary is that you, the reader (using fem pronouns, I might do other works with male or gender-neutral terms), has a slow-burn romance with Death himself. You travel with the boys as a friendly hunter buddy, the same associations as Sam and Dean.
Oh, also I HC that Dean and Cas are together, like a normal person.