Okay, this was only a short demo, but it was awesome! The humor is delightful and lewd in a lighthearted way, wich is really pleasant. Lucifine is by far my favorite character - he seem to be totally my type, in a game of that kind at least. I don't know what to think of the Blood God yet, but the one I like the less is Beelzebabe I guess. I have neutral feelings about Asstaroth for now, but I may like him a lot in the full release.
I'm very happy that the game stars a MC with no defined gender - this isn't a very common thing, and I like it!
The only thing that bothers me is the randomness of the answers you can give - the game is mostly unpredictable. This is very funny in the demo, but I fear it'll be a very difficult game with it's full release, since it may be hard to tell what do you need to do to get the ending you want. Well, I guess I'll know that in due time.
Do you have any date approximation for the full release, by the way?