With this game still being in development, it's common for new art to be added for scenes that players have already done, meaning the only way to see the art in the Pervert section is to start a new game and repeat whatever is required for that scene. This becomes a bit of a pain with some scenes having complex requirements; I still only seem to have a single scene unlocked for the Warlock for example, despite trying just about every combination I can think of (including some that resulted in unique artwork that then wasn't unlocked).
What I would like to see is a button added to the Pervert or Progress section that simply unlocks everything; by default this could be hidden with a setting in profile.json to unlock it, but this would make things a lot easier for players who've already re-played the game a bunch of times.