I'm genuinely impressed by this game, and I'll let you know why I think so. It's a big improvement from your other games but my opinions will be subjective, so keep that in mind if I say that I dislike something that some others have not. Without further ado, I'll get right into it.
To start of with, I see that this game has focused more on gameplay elements and story, which were things other games of yours were lacking. And while others could see this as a decrease in variety and thus enjoyability, I see it as a much needed quality improvement that sacrifices easily advertisable elements like picture count for peak quality throughout the entire game. Let me explain:
This time around, thanks to the clearly improved storytelling and more unique scenarios, all of these characters are likeable even if you've never seen them before, or don't care for if you have. This was a problem in past games. There were many characters, and because the dialogue was often recycled, there was nothing that made them different. In this game though, clear thought was put behind the individual dialogue, as well as how the characters get introduced. It was not just the dialogue that was an issue in past games, it was also the fact that you had so many to choose from from the get-go, possibly inducing decision paralysis. This game solves this issue by giving more characters naturally, from the three at the beginning to eventually the twelve that are advertised. Just amazing work.
And because the dialogue is well-written, it doesn't matter if this game has less characters, because they truly feel like characters this time around. Also unlike in many of the other games, you can have many events per day, as many as are available. In addition, you can always see how much XP you have at any given time, which was something I pointed out in Chara Mansion. All this results in the interesting effect that while there's technically less to do, due to the fact that you can have sex with multiple girls in one day, it feels like there's actually way more to do, since there's really no restrictions.
The story as well, is something I quite like. Chara Mansion had the issue with its story that it had an interesting premise, but it didn't really make any sense because it tried to be so grounded in reality to the point that it became, and sorry for saying this.. cringe. Here it makes way more sense. There's magic involved, which honestly, makes more sense than a real-world scenario with these characters, and the justification for "seXP" is also explained in a comprehensible manner. I just really love the direction this took. I also really appreciate how you managed to make the dungeon work in a setting like this, and made it more than just a fun gameplay element.
Speaking of the dungeon, for your first attempt at something like this, I think it really works. The only downside is the obvious lag during the different options, and that's really about it. The RNG element can make it a little too random at times, but it always makes it different, breaking the clicking cycles of the previous games, where as I mentioned before, you couldn't even do multiple events a day. There's also a lot of upgrades for the dungeon mini-game, and none of the upgrades seem overpriced in terms of XP cost. Meaning that some other player's gameplay can look different, because they could prioritise the endurance of the MC over say, attack power or route disambiguation. As for the attacks, they're always the same undertale-esque mini-game, but because it's never impossible, it's just a simple way to make the game more fun. Just really well done, over all.
Before I go into the critique, I want to reiterate again that the whole "quality over quantity" -approach also shows in the quality of the art. Only in a few pictures did I see something clearly off, and they were mostly just in the eyes, which I know are hard to do using AI. What's surprising about that is the labia, which you somehow nailed this time around. Seriously, well done. If I could download some of the pictures in this game, I would. I didn't think the art could get any better after the previous games, but you've managed to prove me wrong. Don't pressure yourself into always topping yourself with each game, but I do just want to say that this is your finest work yet. What's more is that all of the "fetish" content is accessible through free pills, when in other games they always cost something. You've not only put thought behind the art, but how accessible you want to make it as well. For that, you have my appreciation.
That said, I do have some critique, but just clearly way less than in the other games. To start off with, the player name selection screen is lacking, to say the least. There's no backspace, no capitalisation aside from the first letter, no special characters like hyphens, nor do I think that you can edit the name later on. The second immediate thing is the ever-present lack of volume control, which again is not much of an issue because that can be changed in windows' volume mixer, but because the game features two distinctly different music genres between the dungeon and everything else, I would've liked to have seen at least a toggle for each. The last thing I'm going to mention here is the lackluster end-game: After you've unlocked all the scenes for the characters that need crystaline to unlock, crystaline suddenly becomes useless, despite its importance in story. Which in turn means that subsequent dungeon runs avoid getting crystaline altogether in order to have a better chance at finding a chest for those last grimoires. Also in the end-game, it's more difficult to get hospitalized, which is something you need to do in order to get the last scenes. It's still doable, but slower and depending on luck, maybe not possible. As for the crystaline, something like converting them to seXP could be a good incentive to keep getting them, as there are people who want to get all of the skills, for completion's sake.
As for hospitalization, like I said before, it's a mechanic that's needed for some of the scenes. But because those scenes are randomised as well, you need to keep failing dungeons in order to unlock the last ones. Namely, getting Yor to level 19 took me longer than it should've. What I think would've helped with this, would have been the option to stay in the hospital once you were "free to go" until you were fully healed. Especially during the end of the game, where there was nothing else to do but sleep and pass the time anyway. There are also some grammatical inconsistencies, so I'll point them out as I truly don't have much to complain about, which really is great. First off, there's a scene with Asuka where the narrator says "You take Asuka from behind", which obviously doesn't mean that you're railing her from behind. It means something quite opposite. There's also a slight error in the naming of the crystaline deposit, where in the crossroads if unlocked, it says "Crystaline Mine" but when you get there, it's called "Crystaline vein". But that's all I have for that, so do you see how much I need to grasp at straws to find something to complain about this game? This means that you've done an exceptional job.
I have one more suggestion before I wrap this up, and that's to do with the "natives". When you see one, you get 2xp, which is a great source of it early in the game, but later on, it's not much at all. What I think could've made them better for that stage, is if you could have had sex with them for more XP at the cost of more stamina, because after all, you want to avoid having sex in the dungeon. Something like 7-10xp for 25-33% of stamina maybe? I don't know, just spit-balling. It also would've been a little more fun to be able to get more "involved" with them, as opposed to being able to only see them from afar. In a similar vein, what if some of those "girls in need" weren't all mimics? It would be a great way to add a new character into your roster, by rescuing it. But again, these are all just ideas, and nothing to seriously consider.
All in all, this is a seriously impressive game, and it has improved from your other games on all fronts. From the dialogue and text, to the gameplay, to the visuals, just everything in my mind, is objectively better, even if there aren't 50 different characters, or thousands of different photos. You've just really made a good game here that's just not a harem simulator. And what I said about wanting to download those pictures is all true, if you've got a drive link or something, I'd be more than happy to get it. You've outdone yourself with this one and I look forward to seeing what you've got coming up. Thanks for reading this far, and take care.