We are very happy that you liked, and we are sorry that this problem is happening, but dont be sad, there is no content there right now and the freeze happens when the game is supposed to show you the "end of demo" screen, we will be adding the rest of luny route and erika's route very soon, the other girls will come a bit later.
We have both routes plot and assets finished, but couldnt implement them in the game in time for the jam submission unfortunately