Yea, in the demo they only sell a single bottle of Ramune and then are "sold out."
Oh! That reminds me, in the demo, I went to the hole in the wall to the where you can attempt to "squeeze into" and decided against it. After that, I would get the "stuck in the wall" scene the next time I was on that screen, even if I entered from the top or saw it from a game over. It only happened one time (didn't get stuck in a loop) but it was an odd bug none the less.
I never heard of live2d before, seems powerful! (Also, exporting them as frames sounds like that takes a ton of time and set up x.x )