Most people pirate games because they are unable to buy, not because they don't want to pay. The people that don't want to pay wouldn't buy the game anyway, and the people who are unable to... well, they are unable to buy the game. It's simple, really.
We're looking into adding exactly that, yes.
Although both games had an artist (the same artist), no AI art in this game no matter how small or big. Not even partially. No background elements, no sprites, no UI, no characters, not used for reference, nothing.
There's plenty of stuff that will be in the final game that aren't in the files of the demo. Everything you see in the trailer on DLSite is properly made and finished as is seen, so no need to worry.^^
Again, thank you all so much for your feedback!