The UI is a little clunky, but beautiful. My only hiccup was being unable to get out of the phone, if I managed to open it right before one of the dialogue box popups.
The artwork is lovely, and poor Luana's dialogue breaks my heart. She's adorable.
I'm curious, because the demo is short enough that there's not really an indication one way or the other. Is she a futanari, or a dickgirl/newhalf? Does she have a vagina, or just the block'n'tackle?