I didn’t know all that about Last Legacy. That’s awful that the end will never be done. Nix Hydra sounds like a shitty company.
I got sucked into a couple of those pay to play otomes. One was Obey Me!, which got me absorbed in the story (plus, Lucifer 
), but then the story went to hell. I stopped playing it after dropping who knows how much into it because it just wasn’t worth it (interestingly, someone is doing a rewrite on itch–not sure how they can without getting sued, which makes me wonder about some other games that have gone to hell). The other one was some Japanese Samurai game, the name of which I can’t remember. You’d earn the things to move along the story and, half the time, nothing freaking happened. The whole setup seems like a scam to me. Let me buy the damned game so I can play it. You end up paying a ridiculous amount for nothing. Anyway…
I’m hoping you’re right about the third wheel thing with Ais and Vere. I really liked Ais and Leander, but got that same vibe. Of course, I kinda got the impression that Ais has banged all of them, except the grump (can’t remember their name) and the doctor. Ais also dropped a hint that Leander and the doc had screwed around.
I’m hoping they don’t go the route Andromeda 6 went, with all of them paired off, and the MC is just kind of in the way of it all. But it definitely seems to have potential.