Petals of the Damned

In a world that hates and fears witches almost as much as death, Agatha Harkness finds herself betrayed by her own coven and with newfound powers she doesn't truly understand. The only one who seems to want to be around her now is a strange woman who goes by the name of Rio Vidal. As it turns out, only Death herself can truly understand Agatha. Their relationship is twisted, complicated, but powerful. In this fic, Agatha and Rio navigate their newfound love through the centuries, and entertain domestic life despite their "evil" tendencies.

Please note that this is not entirely accurate to canon - I want to give our favorite witches a good, strong backstory!