This is so interesting! I'm curious with this tidbit "But what do you do when one of your coworkers fall in love with one of the entities?" Does that mean our MC is not the object of affections of Zecharias but is instead an unfortunate person trying to survive the entity's plan? Though, based on the image shown I think that's Clark but I can't be fully sure.
Despite that, I love the set up, things feel more fleshed out story wise and the placeholders that are put in really add to the feel and atmosphere. I love the way you narrated the story of the Backrooms because it's a very used topic for shits and giggles but you handled it pretty well. I imagine it would be disorienting to see the colorful and out of place Zecharias among the beige and yellow walls of the Backrooms.
Amazing job here!