This demo feels astoundingly well-crafted, with everything from the intriguing world-building lurking in the background to the stylish logo and GUI. The juxtaposition of the high-tech world with the club's Gilded Age ambience is both very interesting and a best-of-both-worlds for me and all of the art is just wonderful, both the sleekness of the backgrounds and the GUI and the warmer style of the girls. Character design is top-notch and the current interaction is full of personality: I would likely have chosen Syda first in the full version so of course I love her, and I find myself intensely curious about Boss and his mysterious past. I also appreciate that you can choose your MC's pronoun, which is much more common these days but still not an option across the board. ... This may sound odd, but I really like the artwork of the cocktails and kind of wish there were more, though I'm sure MC's wallet does not. (It's also hilarious that the most expensive drink is apparently a hairsbreadth away from being straight grain alcohol.)
This is one of the most promising visual novel demos I've seen in a while from a genre that sometimes goes for quantity over quality, though admittedly I'm just a random person on the Internet so my opinion may or may not be worth two corks or less. That said, this random person will be keeping an eye on your game!