Part of the fun to me with transformation games is the character slowly growing comfortable exploring themselves and coming to terms with their new bodies and potentially their new sexuality. I appreciate that the game gives good reason for its porn logic written characters, the idea that MC is magically more attractive helps you let go of the unrealistic circumstances to a degree. I think it would also be useful to state that MC is more sexually driven because of the succubus too, otherwise how quickly they accept male advances feels rushed. A dream sequence before your first male encounter of you as a female sleeping with a male could go a long way to promote MC questioning the idea and giving some legitimacy of him making that choice. That or in the first bar scene instead of having MC hit on a girl have a guy sitting there too and have the MC be bi and try hitting on both people and failing. That would take away any complaints about how quickly he changes teams.
I saw on the previous page people criticising turning down characters so I'll give my reasoning. When I play games like this I basically have two saves I follow at least. One being what I would be likely to do in MC's position. Two would be getting to see the story progress with the most sex in mind and enjoying those scenes disconnected from my real playthrough. I'll put spoilers for explaining my opinion on each character.
They aren't very developed yet but as someone more interested in the girls presented so far I'm hoping Agnes and Ava are romantic choices in the future. Emily isn't half bad either, not my type as much as the other two though.
I think it's a mistake to negatively address people who don't choose to go completely slutty just because they're playing a porn game. If you give people options and have stats like control and corruption, some people are going to want to play on the more pure path. If that path is less interesting it's only because of the creator, because I can think of plenty of ways to make that fun. It's completely possible to have lots of sex and fun in a new body without delving into the bottom of the slutty barrel. Not to shame the slut path though, to each their own, that can be a lot of fun too. At the moment the more vanilla path cuts off important moments like the first dream that explains important info and lore which is a messy way to tell a story. That first dream encounter should be mandatory no matter your path, or at least hopefully that information missed gets to you in another form like Eva telling you in a future update.
Overall I may seem critical but I think this shows promise, I'll definitely check out future installments one day.