I only played the first two and a half days. I have to say in terms of production quality this game is insane. Very good renders & animations, and boy are there a lot of animations. For idle npcs, camera pans, combat moves, you spared no expense. In that regard, I don't know any AVN that is better than this one.
But -- all this might not really matter since the writing is quite bad. It's the weakest link in the chain. First of all, there are some weird wordings, which might be just a lack of English proficiency. But also, no matter in which language, quite a few conversations or MC throughts are just weird or not properly set up.
When I look at how the game (and even this webpage) is polished, it seems like you have a lot of development resources at your disposal. I strongly suggest you to divert some of them to overhaul your writing. Everything about this AVN is S tier except the writing, which is the one thing you aren't allowed to mess up.
And lastly, while all that polish is really impressive, it could also be considered wasteful. An AVN is a marathon, but it seems like you're starting it with a sprint. Your final product is only worth a fraction of its potential if you can't finish it. I've seen quite a few awesome AVNs fail and it pains me, so please think about the long run too!