Well for one, it was really unexpected, when when the lewd starts it ramps up from nothing to gangbang in a a couple of seconds, I'm not complaining though, it was pretty hot and unfortunately not many devs are good enough to make unexpected scenes, that's why it felt out of place, that and the repeatable cycle at the end.What felt so out of place about it?
But regarding progression I'm really stuck at the brothel, and its being a pain in the ass because of how long and repetitive the scenes with the old fart are, now Arthur already asked me to get the anal beads which I have no clue where to find them, and the other dude already came clean about his girlfriend trying to get rid of Sarah. But overall this is such a badly design section imo, by the original author of course, but having to go back and forth talking to everyone to see if it triggers something while waiting for the very long and repetitive scenes.