I believe they can confraternize in panties (that is, I don't believe this is a dream sequence); I don't believe -- yet -- all the girls there would do a reverse gangbang with tremolo.
It's not even a "yet" it's a "100% never gonna happen"
There are extremes in both sides: on one, we have pigeonholed monodimensional unchangeable characters (or the believe they are or should always be like this); on the other, schizo characters with erratic behaviours who can do anything even if it contradicts their personalities in the previous episode (or the believe they are or can act like this). Good writing has a setup before changes happens so they don't seem random.
Well, I personally don't see anything in that scene being something that's all that hard to believe or that's it's some sort of "erratic" behavior from anyone. It's not like we need to see those kinds of sandbox-style gradualism scenes every episode where the girls becomes more and more comfortable in various states of undress around the MC and others, even when off-path, in order for it to make sense.
Nothing in that scene to me seems "random" like it was somehow impossible or not within any of the characters to do this. This is ultimately just a bunch of friends having fun and all being comfortable enough around each other like this. They've all, at some point, shown some skin to the MC anyway, mostly always in underwear too, including Jill, or are at least bold enough to do it even if they haven't. It's also been a couple of months since he potentially broke things off with them if he'd gone as far as the breakfast choice, or longer if he hadn't gone that far, so more than enough time for the girls to accept the situation and the friendzoning. Add in a bit of alcohol as we see behind them and there's more reason why they're cutting loose like this.
I honestly think it's kind of funny seeing some of the pearl clutching over this preview. They aren't one-note characters and this isn't going to an extreme, imo, it's right in the middle as far as I'm concerned.
