Wow this game is amazing, the artwork is at least 9/10, it's some of the best 3DCG I have ever seen in a vn. The world is just spot on, there are actually a lot of clearly impactful choices, although i noticed a good bunch that weren't impactful as well...
And the characters are... well it's a hentai game, so, you know, expect hentai game characters, but at least the character designs themselves are incredibly good.
The story is actually decent too, I don't know it seems increasingly rare for hentai games to have good story, it's usually a detail, but this is a VN, so the story is actually important, and it does it's job, I got really into it. Usually with games like these I skip like 90% of the dialogue, well, not in this one, this one was well written enough that it felt worth reading through. Although there are some minor grammar and vocabulary issues which could use a little bit of editing, hopefully before the final release. A good editor would make the story really shine just with a little grammar correction here and rephrasing there. QC stuff; but since it's a hentai game it doesn't technically n eed it.
I haven't finished it, just played a couple hours, but I am impressed with how dense it is in sexual content, a lot of games make you wade through like an hour of story before you get to the so very important sexy bits, and others make you grind for it, this game does neither, you can start putting your character's dick where it belongs right in the prologue, and u never have to actually stop doing it. If a hot new girl is introduced, you rarely have to wait long to fuck her (if you do there are extenuating circumstances, like she's the empress kind of circumstances, or she's for some reason not easily accessible for you)
Once it's completed, this will be a good contender for favorite VN style game for me, I've played heaps of them but my favorite is kinda still the very first I played, which was sagara family. This game in it's final form, I give it good odds of beating even that experience.
Although I can't help but comment that the option to have Ain as stepdaughter is really weird, since if she's your stepdaughter, but younger sister of your actual daughter, that'd mean your wife had to have cheated on you after you had your first one... And idk, protagonist doesn't seem like the kind of guy who'd let something like that slide.