Currently, the game has 83 scenes from Alex's perspective and 6 scenes from the villain's perspective. Viallin's choices also don't impact the story (they're just there to ask if you want to see a sex scene).
I'm sorry there was a bug. You can download a new version we just uploaded, and you'll be able to skip the scene. Alternatively, you can enable skipping scenes in-game settings instead of the new game menu, and it will also work.
You will see a prompt to skip the scene shortly after she unbuttons her blouse.
Uh... no one is unbuttoning any blouses in the first sex scene, so we're definitely talking about different scenes. There weren't even any women in that scene, since I picked the M/M option.
Or... maybe that just isn't the first scene, and it's only the first one I saw because I have MxF and FxF disabled.