Sigh.
So, this is 99% a kinetic novel. There is one, count them, one choice in the whole f'ing project.
This means that if all you want to do is to fap to the animations in the gallery, you can start the game, lean on the "skip" key for a while, make one choice, lean on the "skip" key again, and have "played" through most of the game in about another 5 minutes, tops. Go back to the choice, take the other choice, repeat.
Granted, as the developer, it's more than a bit disappointing that you don't appear to want to look at any of the text of the story, but that's your solution without decompiling the project.