First off, very nice. Out of all the games in this demo day this one feels closest to a full release to me. It has a level of polish and solid art style that I don't usually see, I am quite impressed. The dialog is funny and straight to the point which is great, some games have so much rambling dialog that I get tired of it and stop talking to npc's. Your dialog is great, I felt like talking with all the random people and those little cutscene dialogs were interesting and didn't overstay their welcome.
Music is great too.. although I think there might be a bug. Once I started my first battle this intense music started playing which was great, but after the battle ended it just kept playing (not returning to the more chill level music). Dunno if this was on purpose or if its a bug.
I like the demon designs and the combat dialog is solid. When the broom showed up I laughed. Although I didn't realize that I was about to ice the janitor, that was a nice surprise. I really like the more severe aspect to the game and the adult themes.
It's refreshing to see a game that is adult rated but not all about eroticism... also Drugs are bad m'kay.