I'm not sure why you would make a statement like "still no incest", then. If you have no idea what's going on in the game, why would you expect something specific like incest? It literally makes no sense for anything incestuous to have happened yet. It's quickly approaching that (presumably), but most of the game so far has been the MC adjusting to his new life and getting tutored on the work he is to do. The size being as big as it is does make sense to some degree, given the number of scenes that are animated so far. That said, I haven't bothered to check if the file type is optimal. It's entirely possible those are JPGs instead of much more compressed WEBPs (a common thing among newer developers).