@YaBoii69
I'm going to say a few things here that you may not like, i'll do my best to keep it reasonable and suggest work arounds and ways to fix some of the problems.
Firstly if this is going to be a VN, which characteristically live and die on the story and writing style you may want to change the order and wording in your intro, things like "After some tough moments" is this going to be explained in the game or is this sort of a placeholder? and "today is your first day of training. The undercover training. 4 years ago you applied for the police force." the order in this is not great, ideally you need to have explained who the PC is before saying he's going for undercover training, just saying at the beginning that you are a 24 year old cop would do fine.
There are some phrases i would suggest could use a slight change "Sgt Dickson: don't just stand there get in", "get in" would read fine for a vehicle "come in" works better for a building "Sgt Dickson: Welcome in paradise, ..." should read "Welcome to paradise". Basically a read through of you script for wording and spelling fixes would go a long way and if you feel like it perhaps get your self a proofreader or editor, i know it helps me a lot.
Also when the player has his flashback as to his GF cheating i'd suggest changing the background to something more relevant, perhaps a bedroom?
While i do like the use of thoughts you could perhaps use the PC's text box just in italics that way you can write and use the thoughts of anyone you come across by putting the text block into italics, that is a design choice and that is up to you just my suggestion.
As for the Daz work i have to ask are you using Iray materials in the Iray renderer? it seems to be the shine on the skin is a little off. Also the poses could use a little work but don't worry if this is your first try then it is way better than i did first time through and a little practise will fix that without a problem.
I don't want't to be derogatory but the backgrounds need changing, there are free stock photos on the net that you can use that would be an improvement over what i assume is paint, if you really need a free option to draw your own stuff in use Gimp and to be fair this is a pirate site, i don;t expect Photoshop would be hard to find if you put your mind to it, using something like that to produce a start page image could go a long way as well.
In summary:
+ story scenario has legs, you could go anywhere you want with this and flexibility is good.
+ Your obviously serious about this or you wouldn't be asking for feedback
+ Sex poses are pretty good for a first timer
+ player scores are tracked like fitness
- You really need to address the background images, as is it comes off pretty badly.
- Engrish needs work, it's a pet bug of mine.
- Daz materials need to be correct for the render engine you are using else they will come out oily/shiny looking
As a proof of concept i've seen worse and putting together a fully working bug free demo is a decent start, though i think this has a long way to go before i would be happy with releasing this for public consumption or patreon.
Good Luck with it.