What I described above is what happens. The choice is whether you tell Zoey you choose her or not. There are a few variances (like I described with the receptionist), but both choices result in the MC leaving Zoey alone:
- Choose Zoey: She gets her suit and he follows after, then spanks her, after which she falls asleep and so the MC leaves and finds Ruby; or
- Choose Ruby: He just goes immediately to find Ruby, in which case he has a brief conversation with Annie, has the scene with the receptionist (and Mask Girl a little bit), and then goes to Ruby.
I might be forgetting something briefly or getting the events a little out of order or whatnot, but that's the gist of the difference, for now at least. After either of the above, we then go to the scene where the MC eavesdrops on Annie speaking with Ruby and go from there. I don't think there's supposed to be a full divergence in the paths yet. There might eventually not be really any divergence at all.
So are you're saying that after picking Zoey you automatically choose Ruby (so
not talking about the scene with Annie talking to Ruby as the MC listens, but get
the lewd receptionist scene as well)? If so, you must have a version different from mine. For the record, I've applied the Lewd Patcher file that adds incest and loli content that isn't available in the standard copy of the game you can get on F95Zone. So what I see could be different, if you're not using that patch.