Okay hopefully this is the fic you're looking for, but if not, it's still a really good fic series. Still in the works: archiveofourown.org/series/4760086

They haven't sold out on the Hazbin official site yet but they've been out for roughly a month now

I have but one question for Lucifer:

I think your art is bomb asf and after seeing all the scrumptious art it only feels right that I share you some pictures of my cat