Read
You must be registered to see the links
. It should give you answers. Although, I doubt he will make any "meanwhile on Earth while MC was off-world" scenes but I don't know what will happen.
That's 2: RTP and this game.
RTP wasn't a harem game because it made you to choose one over two others. Maybe that was the reason you didn't get "WVM vibes".
By the way, it has a kinetic novel tag, so actually it should have NO choices at all.
AE is an on-the-rails type of VN (nearly kinetic) and the main storyline seems to "force" fairly big harem to the MC in the first season alone. Since AE has been a "story driven linear" VN from the start, as MrK wrote in the warning spoiler in the OP before leaving the site, I expect that the main story will "force" even more females to join the harem making choice-bound females a minority.
Personally, I haven't played WVM since July 2021 so I don't precisely know what you meant with "becoming WVM". But, I'd guess it could be about adding all females/transgenders effortlessly to the harem and all of them would be a big happy family. I expect AE's main story to expand the harem with as many characters as MrK has time to create. At least Braindrop gave an option to decline most characters that were available for the harem when I played it about 30ish months ago, I think.
Can't remember most details about the story though...