aaah, I've finally caught up with all there is so far of Ava's Demon.
It begins with showing, yes, Ava and her literal personal demon, who's grown to be intensely frustrated with her - she *needs* her to fulfill a quest for revenge, but Ava's not interested. Until one day, that is, when Ava's forced to enter into a pact with her to avoid dying that day, and both their fates become *much* more tightly entwined..
It does get quite dark at times, much as Wapsi Square can. But the sense of otherworldliness is enthralling. You'll get an idea fairly quickly whether it might be one for you. ^_^
https://www.avasdemon.com/pages.php#0001
@Chel Oh, the storyline's been positively humming away! Though I wish I could tell how often it's currently being updated - there's no date on the pages, nor comments, and the front page news only talks of a hiatus until September 2019, which I'm *hoping* we've passed. ^_^;
But so damned good! And those motion comics too!