Nothing.. It’s a dream. I can’t imagine making that any clearer unless I literally put a big "It’s a dream!" text on screen. Genuinely not trying to be rude, but some scenes are just there for fun, like in most games. That said, I know some people aren’t into that, so there’s basically a "skip scene" option. Why would a dream cause divergence from the main story? If it’s already established that this kind of content is optional, there’s no reason to be paranoid about every instance of possible lesbian content. Hope that makes sense.