I love the art style and the design for Zlch! He's a bit more human, and his attitude is so much fun. You actually want to hear what he has to say, even if you're not sure how much of it is lies. If any of what he says about hell and the world is true, there's some interesting lore to build on.
The track you chose sets up this intimate little atmosphere that's perfect for a conversation. The saxophone that comes in gives it this noir undertone that's perfect for a double-cross. I wasn't sure about it at first because it also goes against what you expect from a summoning scene, but it totally works. My hubby heard it while I was playing and noted that he liked it, too.
I'm having trouble getting to the third ending but I'm not even mad. I'll get it eventually. And the web version seems to be working well for me so far.
Definitely going to give your other book a try and I look forward to your future projects!