No proper maximizing in windowed mode, no textspeed options, no easy or even obvious way to open the menu once ingame, right-click does not open the savegame menu, text advance only with Space or left-click, not with Enter and Num-Enter. H hides the interface but does not bring it back.
What is this supposed to be? An assortment of the worst ways to make a VN?
Atleast is does not have a confirmation for closing the game, that something.